/*
- * MPEG1 codec / MPEG2 decoder
- * Copyright (c) 2000,2001 Fabrice Bellard.
+ * MPEG-1/2 decoder
+ * Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file mpeg12.c
- * MPEG1/2 codec
+ * @file
+ * MPEG-1/2 decoder
*/
//#define DEBUG
+#include "internal.h"
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
+#include "mpeg12.h"
#include "mpeg12data.h"
+#include "mpeg12decdata.h"
+#include "bytestream.h"
+#include "vdpau_internal.h"
+#include "xvmc_internal.h"
+#include "thread.h"
//#undef NDEBUG
//#include <assert.h>
-/* Start codes. */
-#define SEQ_END_CODE 0x000001b7
-#define SEQ_START_CODE 0x000001b3
-#define GOP_START_CODE 0x000001b8
-#define PICTURE_START_CODE 0x00000100
-#define SLICE_MIN_START_CODE 0x00000101
-#define SLICE_MAX_START_CODE 0x000001af
-#define EXT_START_CODE 0x000001b5
-#define USER_START_CODE 0x000001b2
-
-#define DC_VLC_BITS 9
#define MV_VLC_BITS 9
#define MBINCR_VLC_BITS 9
#define MB_PAT_VLC_BITS 9
#define MB_PTYPE_VLC_BITS 6
#define MB_BTYPE_VLC_BITS 6
-#define TEX_VLC_BITS 9
-
-#ifdef CONFIG_ENCODERS
-static void mpeg1_encode_block(MpegEncContext *s,
- DCTELEM *block,
- int component);
-static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code); // RAL: f_code parameter added
-#endif //CONFIG_ENCODERS
-static inline int mpeg1_decode_block_inter(MpegEncContext *s,
- DCTELEM *block,
- int n);
-static inline int mpeg1_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
- int n);
-static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n);
-static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
- DCTELEM *block,
- int n);
-static inline int mpeg2_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
- int n);
-static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s, DCTELEM *block, int n);
-static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n);
-static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred);
-static void exchange_uv(MpegEncContext *s);
-
-#ifdef HAVE_XVMC
-extern int XVMC_field_start(MpegEncContext *s, AVCodecContext *avctx);
-extern int XVMC_field_end(MpegEncContext *s);
-extern void XVMC_pack_pblocks(MpegEncContext *s,int cbp);
-extern void XVMC_init_block(MpegEncContext *s);//set s->block
-#endif
-
-const enum PixelFormat pixfmt_yuv_420[]= {PIX_FMT_YUV420P,-1};
-const enum PixelFormat pixfmt_yuv_422[]= {PIX_FMT_YUV422P,-1};
-const enum PixelFormat pixfmt_yuv_444[]= {PIX_FMT_YUV444P,-1};
-const enum PixelFormat pixfmt_xvmc_mpg2_420[] = {
- PIX_FMT_XVMC_MPEG2_IDCT,
- PIX_FMT_XVMC_MPEG2_MC,
- -1};
-#ifdef CONFIG_ENCODERS
-static uint8_t (*mv_penalty)[MAX_MV*2+1]= NULL;
-static uint8_t fcode_tab[MAX_MV*2+1];
-
-static uint8_t uni_mpeg1_ac_vlc_len [64*64*2];
-static uint8_t uni_mpeg2_ac_vlc_len [64*64*2];
-
-/* simple include everything table for dc, first byte is bits number next 3 are code*/
-static uint32_t mpeg1_lum_dc_uni[512];
-static uint32_t mpeg1_chr_dc_uni[512];
-
-static uint8_t mpeg1_index_run[2][64];
-static int8_t mpeg1_max_level[2][64];
-#endif //CONFIG_ENCODERS
-
-static void init_2d_vlc_rl(RLTable *rl, int use_static)
-{
- int i;
-
- init_vlc(&rl->vlc, TEX_VLC_BITS, rl->n + 2,
- &rl->table_vlc[0][1], 4, 2,
- &rl->table_vlc[0][0], 4, 2, use_static);
- if(use_static)
- rl->rl_vlc[0]= av_mallocz_static(rl->vlc.table_size*sizeof(RL_VLC_ELEM));
- else
- rl->rl_vlc[0]= av_malloc(rl->vlc.table_size*sizeof(RL_VLC_ELEM));
+static VLC mv_vlc;
- for(i=0; i<rl->vlc.table_size; i++){
- int code= rl->vlc.table[i][0];
- int len = rl->vlc.table[i][1];
- int level, run;
+/* as H.263, but only 17 codes */
+static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
+{
+ int code, sign, val, shift;
- if(len==0){ // illegal code
- run= 65;
- level= MAX_LEVEL;
- }else if(len<0){ //more bits needed
- run= 0;
- level= code;
- }else{
- if(code==rl->n){ //esc
- run= 65;
- level= 0;
- }else if(code==rl->n+1){ //eob
- run= 0;
- level= 127;
- }else{
- run= rl->table_run [code] + 1;
- level= rl->table_level[code];
- }
- }
- rl->rl_vlc[0][i].len= len;
- rl->rl_vlc[0][i].level= level;
- rl->rl_vlc[0][i].run= run;
+ code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2);
+ if (code == 0) {
+ return pred;
+ }
+ if (code < 0) {
+ return 0xffff;
}
-}
-#ifdef CONFIG_ENCODERS
-static void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len){
- int i;
+ sign = get_bits1(&s->gb);
+ shift = fcode - 1;
+ val = code;
+ if (shift) {
+ val = (val - 1) << shift;
+ val |= get_bits(&s->gb, shift);
+ val++;
+ }
+ if (sign)
+ val = -val;
+ val += pred;
- for(i=0; i<128; i++){
- int level= i-64;
- int run;
- for(run=0; run<64; run++){
- int len, bits, code;
+ /* modulo decoding */
+ return sign_extend(val, 5 + shift);
+}
- int alevel= FFABS(level);
- int sign= (level>>31)&1;
+static inline int mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
+{
+ int level, dc, diff, i, j, run;
+ int component;
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const uint16_t *quant_matrix = s->intra_matrix;
+ const int qscale = s->qscale;
- if (alevel > rl->max_level[0][run])
- code= 111; /*rl->n*/
- else
- code= rl->index_run[0][run] + alevel - 1;
+ /* DC coefficient */
+ component = (n <= 3 ? 0 : n - 4 + 1);
+ diff = decode_dc(&s->gb, component);
+ if (diff >= 0xffff)
+ return -1;
+ dc = s->last_dc[component];
+ dc += diff;
+ s->last_dc[component] = dc;
+ block[0] = dc * quant_matrix[0];
+ av_dlog(s->avctx, "dc=%d diff=%d\n", dc, diff);
+ i = 0;
+ {
+ OPEN_READER(re, &s->gb);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ UPDATE_CACHE(re, &s->gb);
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- if (code < 111 /* rl->n */) {
- /* store the vlc & sign at once */
- len= rl->table_vlc[code][1]+1;
- bits= (rl->table_vlc[code][0]<<1) + sign;
+ if (level == 127) {
+ break;
+ } else if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ level = (level - 1) | 1;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ LAST_SKIP_BITS(re, &s->gb, 1);
} else {
- len= rl->table_vlc[111/*rl->n*/][1]+6;
- bits= rl->table_vlc[111/*rl->n*/][0]<<6;
-
- bits|= run;
- if (alevel < 128) {
- bits<<=8; len+=8;
- bits|= level & 0xff;
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
+ if (level == -128) {
+ level = SHOW_UBITS(re, &s->gb, 8) - 256; LAST_SKIP_BITS(re, &s->gb, 8);
+ } else if (level == 0) {
+ level = SHOW_UBITS(re, &s->gb, 8) ; LAST_SKIP_BITS(re, &s->gb, 8);
+ }
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = -level;
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ level = (level - 1) | 1;
+ level = -level;
} else {
- bits<<=16; len+=16;
- bits|= level & 0xff;
- if (level < 0) {
- bits|= 0x8001 + level + 255;
- } else {
- bits|= level & 0xffff;
- }
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ level = (level - 1) | 1;
}
}
+ if (i > 63) {
+ av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
- uni_ac_vlc_len [UNI_AC_ENC_INDEX(run, i)]= len;
+ block[j] = level;
}
+ CLOSE_READER(re, &s->gb);
}
+ s->block_last_index[n] = i;
+ return 0;
}
-
-static int find_frame_rate_index(MpegEncContext *s){
- int i;
- int64_t dmin= INT64_MAX;
- int64_t d;
-
- for(i=1;i<14;i++) {
- int64_t n0= 1001LL/ff_frame_rate_tab[i].den*ff_frame_rate_tab[i].num*s->avctx->time_base.num;
- int64_t n1= 1001LL*s->avctx->time_base.den;
- if(s->avctx->strict_std_compliance > FF_COMPLIANCE_INOFFICIAL && i>=9) break;
-
- d = FFABS(n0 - n1);
- if(d < dmin){
- dmin=d;
- s->frame_rate_index= i;
- }
- }
- if(dmin)
- return -1;
- else
- return 0;
+int ff_mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
+{
+ return mpeg1_decode_block_intra(s, block, n);
}
-static int encode_init(AVCodecContext *avctx)
+static inline int mpeg1_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n)
{
- MpegEncContext *s = avctx->priv_data;
-
- if(MPV_encode_init(avctx) < 0)
- return -1;
+ int level, i, j, run;
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const uint16_t *quant_matrix = s->inter_matrix;
+ const int qscale = s->qscale;
- if(find_frame_rate_index(s) < 0){
- if(s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){
- av_log(avctx, AV_LOG_ERROR, "MPEG1/2 does not support %d/%d fps\n", avctx->time_base.den, avctx->time_base.num);
- return -1;
- }else{
- av_log(avctx, AV_LOG_INFO, "MPEG1/2 does not support %d/%d fps, there may be AV sync issues\n", avctx->time_base.den, avctx->time_base.num);
+ {
+ OPEN_READER(re, &s->gb);
+ i = -1;
+ // special case for first coefficient, no need to add second VLC table
+ UPDATE_CACHE(re, &s->gb);
+ if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+ level = (3 * qscale * quant_matrix[0]) >> 5;
+ level = (level - 1) | 1;
+ if (GET_CACHE(re, &s->gb) & 0x40000000)
+ level = -level;
+ block[0] = level;
+ i++;
+ SKIP_BITS(re, &s->gb, 2);
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ goto end;
}
- }
-
- if(avctx->profile == FF_PROFILE_UNKNOWN)
- avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0;
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- if(avctx->level == FF_LEVEL_UNKNOWN)
- avctx->level = s->chroma_format == CHROMA_420 ? 8 : 5;
+ if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ level = (level - 1) | 1;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ SKIP_BITS(re, &s->gb, 1);
+ } else {
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
+ if (level == -128) {
+ level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
+ } else if (level == 0) {
+ level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8);
+ }
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = -level;
+ level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ level = (level - 1) | 1;
+ level = -level;
+ } else {
+ level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ level = (level - 1) | 1;
+ }
+ }
+ if (i > 63) {
+ av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
+ block[j] = level;
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ break;
+ UPDATE_CACHE(re, &s->gb);
+ }
+end:
+ LAST_SKIP_BITS(re, &s->gb, 2);
+ CLOSE_READER(re, &s->gb);
+ }
+ s->block_last_index[n] = i;
return 0;
}
-static void put_header(MpegEncContext *s, int header)
-{
- align_put_bits(&s->pb);
- put_bits(&s->pb, 16, header>>16);
- put_bits(&s->pb, 16, header&0xFFFF);
-}
-
-/* put sequence header if needed */
-static void mpeg1_encode_sequence_header(MpegEncContext *s)
+static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n)
{
- unsigned int vbv_buffer_size;
- unsigned int fps, v;
- int i;
- uint64_t time_code;
- float best_aspect_error= 1E10;
- float aspect_ratio= av_q2d(s->avctx->sample_aspect_ratio);
- int constraint_parameter_flag;
-
- if(aspect_ratio==0.0) aspect_ratio= 1.0; //pixel aspect 1:1 (VGA)
-
- if (s->current_picture.key_frame) {
- AVRational framerate= ff_frame_rate_tab[s->frame_rate_index];
-
- /* mpeg1 header repeated every gop */
- put_header(s, SEQ_START_CODE);
-
- put_bits(&s->pb, 12, s->width);
- put_bits(&s->pb, 12, s->height);
+ int level, i, j, run;
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const int qscale = s->qscale;
- for(i=1; i<15; i++){
- float error= aspect_ratio;
- if(s->codec_id == CODEC_ID_MPEG1VIDEO || i <=1)
- error-= 1.0/mpeg1_aspect[i];
- else
- error-= av_q2d(mpeg2_aspect[i])*s->height/s->width;
+ {
+ OPEN_READER(re, &s->gb);
+ i = -1;
+ // special case for first coefficient, no need to add second VLC table
+ UPDATE_CACHE(re, &s->gb);
+ if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+ level = (3 * qscale) >> 1;
+ level = (level - 1) | 1;
+ if (GET_CACHE(re, &s->gb) & 0x40000000)
+ level = -level;
+ block[0] = level;
+ i++;
+ SKIP_BITS(re, &s->gb, 2);
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ goto end;
+ }
- error= FFABS(error);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- if(error < best_aspect_error){
- best_aspect_error= error;
- s->aspect_ratio_info= i;
+ if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = ((level * 2 + 1) * qscale) >> 1;
+ level = (level - 1) | 1;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ SKIP_BITS(re, &s->gb, 1);
+ } else {
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
+ if (level == -128) {
+ level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
+ } else if (level == 0) {
+ level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8);
+ }
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = -level;
+ level = ((level * 2 + 1) * qscale) >> 1;
+ level = (level - 1) | 1;
+ level = -level;
+ } else {
+ level = ((level * 2 + 1) * qscale) >> 1;
+ level = (level - 1) | 1;
}
}
- put_bits(&s->pb, 4, s->aspect_ratio_info);
- put_bits(&s->pb, 4, s->frame_rate_index);
-
- if(s->avctx->rc_max_rate){
- v = (s->avctx->rc_max_rate + 399) / 400;
- if (v > 0x3ffff && s->codec_id == CODEC_ID_MPEG1VIDEO)
- v = 0x3ffff;
- }else{
- v= 0x3FFFF;
- }
-
- if(s->avctx->rc_buffer_size)
- vbv_buffer_size = s->avctx->rc_buffer_size;
- else
- /* VBV calculation: Scaled so that a VCD has the proper VBV size of 40 kilobytes */
- vbv_buffer_size = (( 20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
- vbv_buffer_size= (vbv_buffer_size + 16383) / 16384;
-
- put_bits(&s->pb, 18, v & 0x3FFFF);
- put_bits(&s->pb, 1, 1); /* marker */
- put_bits(&s->pb, 10, vbv_buffer_size & 0x3FF);
-
- constraint_parameter_flag=
- s->width <= 768 && s->height <= 576 &&
- s->mb_width * s->mb_height <= 396 &&
- s->mb_width * s->mb_height * framerate.num <= framerate.den*396*25 &&
- framerate.num <= framerate.den*30 &&
- s->avctx->me_range && s->avctx->me_range < 128 &&
- vbv_buffer_size <= 20 &&
- v <= 1856000/400 &&
- s->codec_id == CODEC_ID_MPEG1VIDEO;
-
- put_bits(&s->pb, 1, constraint_parameter_flag);
-
- ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
- ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
-
- if(s->codec_id == CODEC_ID_MPEG2VIDEO){
- put_header(s, EXT_START_CODE);
- put_bits(&s->pb, 4, 1); //seq ext
-
- put_bits(&s->pb, 1, s->chroma_format == CHROMA_422); //escx
-
- put_bits(&s->pb, 3, s->avctx->profile); //profile
- put_bits(&s->pb, 4, s->avctx->level); //level
-
- put_bits(&s->pb, 1, s->progressive_sequence);
- put_bits(&s->pb, 2, s->chroma_format);
- put_bits(&s->pb, 2, 0); //horizontal size ext
- put_bits(&s->pb, 2, 0); //vertical size ext
- put_bits(&s->pb, 12, v>>18); //bitrate ext
- put_bits(&s->pb, 1, 1); //marker
- put_bits(&s->pb, 8, vbv_buffer_size >>10); //vbv buffer ext
- put_bits(&s->pb, 1, s->low_delay);
- put_bits(&s->pb, 2, 0); // frame_rate_ext_n
- put_bits(&s->pb, 5, 0); // frame_rate_ext_d
- }
-
- put_header(s, GOP_START_CODE);
- put_bits(&s->pb, 1, 0); /* do drop frame */
- /* time code : we must convert from the real frame rate to a
- fake mpeg frame rate in case of low frame rate */
- fps = (framerate.num + framerate.den/2)/ framerate.den;
- time_code = s->current_picture_ptr->coded_picture_number;
-
- s->gop_picture_number = time_code;
- put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
- put_bits(&s->pb, 6, (uint32_t)((time_code / (fps * 60)) % 60));
- put_bits(&s->pb, 1, 1);
- put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
- put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
- put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP));
- put_bits(&s->pb, 1, 0); /* broken link */
+ block[j] = level;
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ break;
+ UPDATE_CACHE(re, &s->gb);
}
-}
-
-static inline void encode_mb_skip_run(MpegEncContext *s, int run){
- while (run >= 33) {
- put_bits(&s->pb, 11, 0x008);
- run -= 33;
+end:
+ LAST_SKIP_BITS(re, &s->gb, 2);
+ CLOSE_READER(re, &s->gb);
}
- put_bits(&s->pb, mbAddrIncrTable[run][1],
- mbAddrIncrTable[run][0]);
-}
-#endif //CONFIG_ENCODERS
-
-static void common_init(MpegEncContext *s)
-{
-
- s->y_dc_scale_table=
- s->c_dc_scale_table= mpeg2_dc_scale_table[s->intra_dc_precision];
-
-}
-
-void ff_mpeg1_clean_buffers(MpegEncContext *s){
- s->last_dc[0] = 1 << (7 + s->intra_dc_precision);
- s->last_dc[1] = s->last_dc[0];
- s->last_dc[2] = s->last_dc[0];
- memset(s->last_mv, 0, sizeof(s->last_mv));
+ s->block_last_index[n] = i;
+ return 0;
}
-#ifdef CONFIG_ENCODERS
-
-void ff_mpeg1_encode_slice_header(MpegEncContext *s){
- put_header(s, SLICE_MIN_START_CODE + s->mb_y);
- put_bits(&s->pb, 5, s->qscale); /* quantizer scale */
- put_bits(&s->pb, 1, 0); /* slice extra information */
-}
-void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
+static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, DCTELEM *block, int n)
{
- mpeg1_encode_sequence_header(s);
-
- /* mpeg1 picture header */
- put_header(s, PICTURE_START_CODE);
- /* temporal reference */
-
- // RAL: s->picture_number instead of s->fake_picture_number
- put_bits(&s->pb, 10, (s->picture_number -
- s->gop_picture_number) & 0x3ff);
- put_bits(&s->pb, 3, s->pict_type);
+ int level, i, j, run;
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const uint16_t *quant_matrix;
+ const int qscale = s->qscale;
+ int mismatch;
- s->vbv_delay_ptr= s->pb.buf + put_bits_count(&s->pb)/8;
- put_bits(&s->pb, 16, 0xFFFF); /* vbv_delay */
+ mismatch = 1;
- // RAL: Forward f_code also needed for B frames
- if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) {
- put_bits(&s->pb, 1, 0); /* half pel coordinates */
- if(s->codec_id == CODEC_ID_MPEG1VIDEO)
- put_bits(&s->pb, 3, s->f_code); /* forward_f_code */
+ {
+ OPEN_READER(re, &s->gb);
+ i = -1;
+ if (n < 4)
+ quant_matrix = s->inter_matrix;
else
- put_bits(&s->pb, 3, 7); /* forward_f_code */
- }
+ quant_matrix = s->chroma_inter_matrix;
- // RAL: Backward f_code necessary for B frames
- if (s->pict_type == B_TYPE) {
- put_bits(&s->pb, 1, 0); /* half pel coordinates */
- if(s->codec_id == CODEC_ID_MPEG1VIDEO)
- put_bits(&s->pb, 3, s->b_code); /* backward_f_code */
- else
- put_bits(&s->pb, 3, 7); /* backward_f_code */
- }
+ // special case for first coefficient, no need to add second VLC table
+ UPDATE_CACHE(re, &s->gb);
+ if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+ level= (3 * qscale * quant_matrix[0]) >> 5;
+ if (GET_CACHE(re, &s->gb) & 0x40000000)
+ level = -level;
+ block[0] = level;
+ mismatch ^= level;
+ i++;
+ SKIP_BITS(re, &s->gb, 2);
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ goto end;
+ }
- put_bits(&s->pb, 1, 0); /* extra bit picture */
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- s->frame_pred_frame_dct = 1;
- if(s->codec_id == CODEC_ID_MPEG2VIDEO){
- put_header(s, EXT_START_CODE);
- put_bits(&s->pb, 4, 8); //pic ext
- if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) {
- put_bits(&s->pb, 4, s->f_code);
- put_bits(&s->pb, 4, s->f_code);
- }else{
- put_bits(&s->pb, 8, 255);
- }
- if (s->pict_type == B_TYPE) {
- put_bits(&s->pb, 4, s->b_code);
- put_bits(&s->pb, 4, s->b_code);
- }else{
- put_bits(&s->pb, 8, 255);
- }
- put_bits(&s->pb, 2, s->intra_dc_precision);
+ if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ SKIP_BITS(re, &s->gb, 1);
+ } else {
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
- assert(s->picture_structure == PICT_FRAME);
- put_bits(&s->pb, 2, s->picture_structure);
- if (s->progressive_sequence) {
- put_bits(&s->pb, 1, 0); /* no repeat */
- } else {
- put_bits(&s->pb, 1, s->current_picture_ptr->top_field_first);
- }
- /* XXX: optimize the generation of this flag with entropy
- measures */
- s->frame_pred_frame_dct = s->progressive_sequence;
-
- put_bits(&s->pb, 1, s->frame_pred_frame_dct);
- put_bits(&s->pb, 1, s->concealment_motion_vectors);
- put_bits(&s->pb, 1, s->q_scale_type);
- put_bits(&s->pb, 1, s->intra_vlc_format);
- put_bits(&s->pb, 1, s->alternate_scan);
- put_bits(&s->pb, 1, s->repeat_first_field);
- s->progressive_frame = s->progressive_sequence;
- put_bits(&s->pb, 1, s->chroma_format == CHROMA_420 ? s->progressive_frame : 0); /* chroma_420_type */
- put_bits(&s->pb, 1, s->progressive_frame);
- put_bits(&s->pb, 1, 0); //composite_display_flag
- }
- if(s->flags & CODEC_FLAG_SVCD_SCAN_OFFSET){
- int i;
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = ((-level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ level = -level;
+ } else {
+ level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ }
+ }
+ if (i > 63) {
+ av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
- put_header(s, USER_START_CODE);
- for(i=0; i<sizeof(svcd_scan_offset_placeholder); i++){
- put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
+ mismatch ^= level;
+ block[j] = level;
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ break;
+ UPDATE_CACHE(re, &s->gb);
}
+end:
+ LAST_SKIP_BITS(re, &s->gb, 2);
+ CLOSE_READER(re, &s->gb);
}
+ block[63] ^= (mismatch & 1);
- s->mb_y=0;
- ff_mpeg1_encode_slice_header(s);
+ s->block_last_index[n] = i;
+ return 0;
}
-static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
- int has_mv, int field_motion)
+static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
+ DCTELEM *block, int n)
{
- put_bits(&s->pb, n, bits);
- if (!s->frame_pred_frame_dct) {
- if (has_mv)
- put_bits(&s->pb, 2, 2 - field_motion); /* motion_type: frame/field */
- put_bits(&s->pb, 1, s->interlaced_dct);
- }
-}
+ int level, i, j, run;
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const int qscale = s->qscale;
+ OPEN_READER(re, &s->gb);
+ i = -1;
-static always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
- DCTELEM block[6][64],
- int motion_x, int motion_y,
- int mb_block_count)
-{
- int i, cbp;
- const int mb_x = s->mb_x;
- const int mb_y = s->mb_y;
- const int first_mb= mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
-
- /* compute cbp */
- cbp = 0;
- for(i=0;i<mb_block_count;i++) {
- if (s->block_last_index[i] >= 0)
- cbp |= 1 << (mb_block_count - 1 - i);
- }
+ // special case for first coefficient, no need to add second VLC table
+ UPDATE_CACHE(re, &s->gb);
+ if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+ level = (3 * qscale) >> 1;
+ if (GET_CACHE(re, &s->gb) & 0x40000000)
+ level = -level;
+ block[0] = level;
+ i++;
+ SKIP_BITS(re, &s->gb, 2);
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ goto end;
+ }
- if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
- (mb_x != s->mb_width - 1 || (mb_y != s->mb_height - 1 && s->codec_id == CODEC_ID_MPEG1VIDEO)) &&
- ((s->pict_type == P_TYPE && (motion_x | motion_y) == 0) ||
- (s->pict_type == B_TYPE && s->mv_dir == s->last_mv_dir && (((s->mv_dir & MV_DIR_FORWARD) ? ((s->mv[0][0][0] - s->last_mv[0][0][0])|(s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
- ((s->mv_dir & MV_DIR_BACKWARD) ? ((s->mv[1][0][0] - s->last_mv[1][0][0])|(s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
- s->mb_skip_run++;
- s->qscale -= s->dquant;
- s->skip_count++;
- s->misc_bits++;
- s->last_bits++;
- if(s->pict_type == P_TYPE){
- s->last_mv[0][1][0]= s->last_mv[0][0][0]=
- s->last_mv[0][1][1]= s->last_mv[0][0][1]= 0;
- }
- } else {
- if(first_mb){
- assert(s->mb_skip_run == 0);
- encode_mb_skip_run(s, s->mb_x);
- }else{
- encode_mb_skip_run(s, s->mb_skip_run);
- }
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- if (s->pict_type == I_TYPE) {
- if(s->dquant && cbp){
- put_mb_modes(s, 2, 1, 0, 0); /* macroblock_type : macroblock_quant = 1 */
- put_bits(&s->pb, 5, s->qscale);
- }else{
- put_mb_modes(s, 1, 1, 0, 0); /* macroblock_type : macroblock_quant = 0 */
- s->qscale -= s->dquant;
- }
- s->misc_bits+= get_bits_diff(s);
- s->i_count++;
- } else if (s->mb_intra) {
- if(s->dquant && cbp){
- put_mb_modes(s, 6, 0x01, 0, 0);
- put_bits(&s->pb, 5, s->qscale);
- }else{
- put_mb_modes(s, 5, 0x03, 0, 0);
- s->qscale -= s->dquant;
- }
- s->misc_bits+= get_bits_diff(s);
- s->i_count++;
- memset(s->last_mv, 0, sizeof(s->last_mv));
- } else if (s->pict_type == P_TYPE) {
- if(s->mv_type == MV_TYPE_16X16){
- if (cbp != 0) {
- if ((motion_x|motion_y) == 0) {
- if(s->dquant){
- put_mb_modes(s, 5, 1, 0, 0); /* macroblock_pattern & quant */
- put_bits(&s->pb, 5, s->qscale);
- }else{
- put_mb_modes(s, 2, 1, 0, 0); /* macroblock_pattern only */
- }
- s->misc_bits+= get_bits_diff(s);
- } else {
- if(s->dquant){
- put_mb_modes(s, 5, 2, 1, 0); /* motion + cbp */
- put_bits(&s->pb, 5, s->qscale);
- }else{
- put_mb_modes(s, 1, 1, 1, 0); /* motion + cbp */
- }
- s->misc_bits+= get_bits_diff(s);
- mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code); // RAL: f_code parameter added
- mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code); // RAL: f_code parameter added
- s->mv_bits+= get_bits_diff(s);
- }
- } else {
- put_bits(&s->pb, 3, 1); /* motion only */
- if (!s->frame_pred_frame_dct)
- put_bits(&s->pb, 2, 2); /* motion_type: frame */
- s->misc_bits+= get_bits_diff(s);
- mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code); // RAL: f_code parameter added
- mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code); // RAL: f_code parameter added
- s->qscale -= s->dquant;
- s->mv_bits+= get_bits_diff(s);
- }
- s->last_mv[0][1][0]= s->last_mv[0][0][0]= motion_x;
- s->last_mv[0][1][1]= s->last_mv[0][0][1]= motion_y;
- }else{
- assert(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
-
- if (cbp) {
- if(s->dquant){
- put_mb_modes(s, 5, 2, 1, 1); /* motion + cbp */
- put_bits(&s->pb, 5, s->qscale);
- }else{
- put_mb_modes(s, 1, 1, 1, 1); /* motion + cbp */
- }
- } else {
- put_bits(&s->pb, 3, 1); /* motion only */
- put_bits(&s->pb, 2, 1); /* motion_type: field */
- s->qscale -= s->dquant;
- }
- s->misc_bits+= get_bits_diff(s);
- for(i=0; i<2; i++){
- put_bits(&s->pb, 1, s->field_select[0][i]);
- mpeg1_encode_motion(s, s->mv[0][i][0] - s->last_mv[0][i][0] , s->f_code);
- mpeg1_encode_motion(s, s->mv[0][i][1] - (s->last_mv[0][i][1]>>1), s->f_code);
- s->last_mv[0][i][0]= s->mv[0][i][0];
- s->last_mv[0][i][1]= 2*s->mv[0][i][1];
- }
- s->mv_bits+= get_bits_diff(s);
- }
- if(cbp) {
- if (s->chroma_y_shift) {
- put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
- } else {
- put_bits(&s->pb, mbPatTable[cbp>>2][1], mbPatTable[cbp>>2][0]);
- put_bits(&s->pb, 2, cbp & 3);
- }
- }
- s->f_count++;
- } else{
- static const int mb_type_len[4]={0,3,4,2}; //bak,for,bi
-
- if(s->mv_type == MV_TYPE_16X16){
- if (cbp){ // With coded bloc pattern
- if (s->dquant) {
- if(s->mv_dir == MV_DIR_FORWARD)
- put_mb_modes(s, 6, 3, 1, 0);
- else
- put_mb_modes(s, mb_type_len[s->mv_dir]+3, 2, 1, 0);
- put_bits(&s->pb, 5, s->qscale);
- } else {
- put_mb_modes(s, mb_type_len[s->mv_dir], 3, 1, 0);
- }
- }else{ // No coded bloc pattern
- put_bits(&s->pb, mb_type_len[s->mv_dir], 2);
- if (!s->frame_pred_frame_dct)
- put_bits(&s->pb, 2, 2); /* motion_type: frame */
- s->qscale -= s->dquant;
- }
- s->misc_bits += get_bits_diff(s);
- if (s->mv_dir&MV_DIR_FORWARD){
- mpeg1_encode_motion(s, s->mv[0][0][0] - s->last_mv[0][0][0], s->f_code);
- mpeg1_encode_motion(s, s->mv[0][0][1] - s->last_mv[0][0][1], s->f_code);
- s->last_mv[0][0][0]=s->last_mv[0][1][0]= s->mv[0][0][0];
- s->last_mv[0][0][1]=s->last_mv[0][1][1]= s->mv[0][0][1];
- s->f_count++;
- }
- if (s->mv_dir&MV_DIR_BACKWARD){
- mpeg1_encode_motion(s, s->mv[1][0][0] - s->last_mv[1][0][0], s->b_code);
- mpeg1_encode_motion(s, s->mv[1][0][1] - s->last_mv[1][0][1], s->b_code);
- s->last_mv[1][0][0]=s->last_mv[1][1][0]= s->mv[1][0][0];
- s->last_mv[1][0][1]=s->last_mv[1][1][1]= s->mv[1][0][1];
- s->b_count++;
- }
- }else{
- assert(s->mv_type == MV_TYPE_FIELD);
- assert(!s->frame_pred_frame_dct);
- if (cbp){ // With coded bloc pattern
- if (s->dquant) {
- if(s->mv_dir == MV_DIR_FORWARD)
- put_mb_modes(s, 6, 3, 1, 1);
- else
- put_mb_modes(s, mb_type_len[s->mv_dir]+3, 2, 1, 1);
- put_bits(&s->pb, 5, s->qscale);
- } else {
- put_mb_modes(s, mb_type_len[s->mv_dir], 3, 1, 1);
- }
- }else{ // No coded bloc pattern
- put_bits(&s->pb, mb_type_len[s->mv_dir], 2);
- put_bits(&s->pb, 2, 1); /* motion_type: field */
- s->qscale -= s->dquant;
- }
- s->misc_bits += get_bits_diff(s);
- if (s->mv_dir&MV_DIR_FORWARD){
- for(i=0; i<2; i++){
- put_bits(&s->pb, 1, s->field_select[0][i]);
- mpeg1_encode_motion(s, s->mv[0][i][0] - s->last_mv[0][i][0] , s->f_code);
- mpeg1_encode_motion(s, s->mv[0][i][1] - (s->last_mv[0][i][1]>>1), s->f_code);
- s->last_mv[0][i][0]= s->mv[0][i][0];
- s->last_mv[0][i][1]= 2*s->mv[0][i][1];
- }
- s->f_count++;
- }
- if (s->mv_dir&MV_DIR_BACKWARD){
- for(i=0; i<2; i++){
- put_bits(&s->pb, 1, s->field_select[1][i]);
- mpeg1_encode_motion(s, s->mv[1][i][0] - s->last_mv[1][i][0] , s->b_code);
- mpeg1_encode_motion(s, s->mv[1][i][1] - (s->last_mv[1][i][1]>>1), s->b_code);
- s->last_mv[1][i][0]= s->mv[1][i][0];
- s->last_mv[1][i][1]= 2*s->mv[1][i][1];
- }
- s->b_count++;
- }
- }
- s->mv_bits += get_bits_diff(s);
- if(cbp) {
- if (s->chroma_y_shift) {
- put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
- } else {
- put_bits(&s->pb, mbPatTable[cbp>>2][1], mbPatTable[cbp>>2][0]);
- put_bits(&s->pb, 2, cbp & 3);
- }
- }
- }
- for(i=0;i<mb_block_count;i++) {
- if (cbp & (1 << (mb_block_count - 1 - i))) {
- mpeg1_encode_block(s, block[i], i);
+ if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = ((level * 2 + 1) * qscale) >> 1;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ SKIP_BITS(re, &s->gb, 1);
+ } else {
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
+
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = ((-level * 2 + 1) * qscale) >> 1;
+ level = -level;
+ } else {
+ level = ((level * 2 + 1) * qscale) >> 1;
}
}
- s->mb_skip_run = 0;
- if(s->mb_intra)
- s->i_tex_bits+= get_bits_diff(s);
- else
- s->p_tex_bits+= get_bits_diff(s);
+
+ block[j] = level;
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ break;
+ UPDATE_CACHE(re, &s->gb);
}
+end:
+ LAST_SKIP_BITS(re, &s->gb, 2);
+ CLOSE_READER(re, &s->gb);
+ s->block_last_index[n] = i;
+ return 0;
}
-void mpeg1_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y)
-{
- if (s->chroma_format == CHROMA_420) mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
- else mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
-}
-// RAL: Parameter added: f_or_b_code
-static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
+static inline int mpeg2_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
{
- int code, bit_size, l, bits, range, sign;
-
- if (val == 0) {
- /* zero vector */
- code = 0;
- put_bits(&s->pb,
- mbMotionVectorTable[0][1],
- mbMotionVectorTable[0][0]);
+ int level, dc, diff, i, j, run;
+ int component;
+ RLTable *rl;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const uint16_t *quant_matrix;
+ const int qscale = s->qscale;
+ int mismatch;
+
+ /* DC coefficient */
+ if (n < 4) {
+ quant_matrix = s->intra_matrix;
+ component = 0;
} else {
- bit_size = f_or_b_code - 1;
- range = 1 << bit_size;
- /* modulo encoding */
- l= INT_BIT - 5 - bit_size;
- val= (val<<l)>>l;
-
- if (val >= 0) {
- val--;
- code = (val >> bit_size) + 1;
- bits = val & (range - 1);
- sign = 0;
- } else {
- val = -val;
- val--;
- code = (val >> bit_size) + 1;
- bits = val & (range - 1);
- sign = 1;
- }
+ quant_matrix = s->chroma_intra_matrix;
+ component = (n & 1) + 1;
+ }
+ diff = decode_dc(&s->gb, component);
+ if (diff >= 0xffff)
+ return -1;
+ dc = s->last_dc[component];
+ dc += diff;
+ s->last_dc[component] = dc;
+ block[0] = dc << (3 - s->intra_dc_precision);
+ av_dlog(s->avctx, "dc=%d\n", block[0]);
+ mismatch = block[0] ^ 1;
+ i = 0;
+ if (s->intra_vlc_format)
+ rl = &ff_rl_mpeg2;
+ else
+ rl = &ff_rl_mpeg1;
- assert(code > 0 && code <= 16);
+ {
+ OPEN_READER(re, &s->gb);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ UPDATE_CACHE(re, &s->gb);
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- put_bits(&s->pb,
- mbMotionVectorTable[code][1],
- mbMotionVectorTable[code][0]);
+ if (level == 127) {
+ break;
+ } else if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ LAST_SKIP_BITS(re, &s->gb, 1);
+ } else {
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = (-level * qscale * quant_matrix[j]) >> 4;
+ level = -level;
+ } else {
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ }
+ }
+ if (i > 63) {
+ av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
- put_bits(&s->pb, 1, sign);
- if (bit_size > 0) {
- put_bits(&s->pb, bit_size, bits);
+ mismatch ^= level;
+ block[j] = level;
}
+ CLOSE_READER(re, &s->gb);
}
+ block[63] ^= mismatch & 1;
+
+ s->block_last_index[n] = i;
+ return 0;
}
-void ff_mpeg1_encode_init(MpegEncContext *s)
+static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
{
- static int done=0;
-
- common_init(s);
-
- if(!done){
- int f_code;
- int mv;
- int i;
-
- done=1;
- init_rl(&rl_mpeg1, 1);
- if(s->intra_vlc_format)
- init_rl(&rl_mpeg2, 1);
-
- for(i=0; i<64; i++)
- {
- mpeg1_max_level[0][i]= rl_mpeg1.max_level[0][i];
- mpeg1_index_run[0][i]= rl_mpeg1.index_run[0][i];
- }
-
- init_uni_ac_vlc(&rl_mpeg1, uni_mpeg1_ac_vlc_len);
- if(s->intra_vlc_format)
- init_uni_ac_vlc(&rl_mpeg2, uni_mpeg2_ac_vlc_len);
-
- /* build unified dc encoding tables */
- for(i=-255; i<256; i++)
- {
- int adiff, index;
- int bits, code;
- int diff=i;
-
- adiff = FFABS(diff);
- if(diff<0) diff--;
- index = av_log2(2*adiff);
-
- bits= vlc_dc_lum_bits[index] + index;
- code= (vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1));
- mpeg1_lum_dc_uni[i+255]= bits + (code<<8);
-
- bits= vlc_dc_chroma_bits[index] + index;
- code= (vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1));
- mpeg1_chr_dc_uni[i+255]= bits + (code<<8);
- }
-
- mv_penalty= av_mallocz( sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1) );
-
- for(f_code=1; f_code<=MAX_FCODE; f_code++){
- for(mv=-MAX_MV; mv<=MAX_MV; mv++){
- int len;
+ int level, dc, diff, j, run;
+ int component;
+ RLTable *rl;
+ uint8_t * scantable = s->intra_scantable.permutated;
+ const uint16_t *quant_matrix;
+ const int qscale = s->qscale;
- if(mv==0) len= mbMotionVectorTable[0][1];
- else{
- int val, bit_size, range, code;
+ /* DC coefficient */
+ if (n < 4) {
+ quant_matrix = s->intra_matrix;
+ component = 0;
+ } else {
+ quant_matrix = s->chroma_intra_matrix;
+ component = (n & 1) + 1;
+ }
+ diff = decode_dc(&s->gb, component);
+ if (diff >= 0xffff)
+ return -1;
+ dc = s->last_dc[component];
+ dc += diff;
+ s->last_dc[component] = dc;
+ block[0] = dc << (3 - s->intra_dc_precision);
+ if (s->intra_vlc_format)
+ rl = &ff_rl_mpeg2;
+ else
+ rl = &ff_rl_mpeg1;
- bit_size = f_code - 1;
- range = 1 << bit_size;
+ {
+ OPEN_READER(re, &s->gb);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ UPDATE_CACHE(re, &s->gb);
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- val=mv;
- if (val < 0)
- val = -val;
- val--;
- code = (val >> bit_size) + 1;
- if(code<17){
- len= mbMotionVectorTable[code][1] + 1 + bit_size;
- }else{
- len= mbMotionVectorTable[16][1] + 2 + bit_size;
- }
+ if (level == 127) {
+ break;
+ } else if (level != 0) {
+ scantable += run;
+ j = *scantable;
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ LAST_SKIP_BITS(re, &s->gb, 1);
+ } else {
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
+ scantable += run;
+ j = *scantable;
+ if (level < 0) {
+ level = (-level * qscale * quant_matrix[j]) >> 4;
+ level = -level;
+ } else {
+ level = (level * qscale * quant_matrix[j]) >> 4;
}
-
- mv_penalty[f_code][mv+MAX_MV]= len;
}
- }
-
- for(f_code=MAX_FCODE; f_code>0; f_code--){
- for(mv=-(8<<f_code); mv<(8<<f_code); mv++){
- fcode_tab[mv+MAX_MV]= f_code;
- }
+ block[j] = level;
}
+ CLOSE_READER(re, &s->gb);
}
- s->me.mv_penalty= mv_penalty;
- s->fcode_tab= fcode_tab;
- if(s->codec_id == CODEC_ID_MPEG1VIDEO){
- s->min_qcoeff=-255;
- s->max_qcoeff= 255;
- }else{
- s->min_qcoeff=-2047;
- s->max_qcoeff= 2047;
- }
- if (s->intra_vlc_format) {
- s->intra_ac_vlc_length=
- s->intra_ac_vlc_last_length= uni_mpeg2_ac_vlc_len;
- } else {
- s->intra_ac_vlc_length=
- s->intra_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
- }
- s->inter_ac_vlc_length=
- s->inter_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
+
+ s->block_last_index[n] = scantable - s->intra_scantable.permutated;
+ return 0;
}
-static inline void encode_dc(MpegEncContext *s, int diff, int component)
-{
- if(((unsigned) (diff+255)) >= 511){
- int index;
-
- if(diff<0){
- index= av_log2_16bit(-2*diff);
- diff--;
- }else{
- index= av_log2_16bit(2*diff);
- }
- if (component == 0) {
- put_bits(
- &s->pb,
- vlc_dc_lum_bits[index] + index,
- (vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1)));
- }else{
- put_bits(
- &s->pb,
- vlc_dc_chroma_bits[index] + index,
- (vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1)));
- }
- }else{
- if (component == 0) {
- put_bits(
- &s->pb,
- mpeg1_lum_dc_uni[diff+255]&0xFF,
- mpeg1_lum_dc_uni[diff+255]>>8);
- } else {
- put_bits(
- &s->pb,
- mpeg1_chr_dc_uni[diff+255]&0xFF,
- mpeg1_chr_dc_uni[diff+255]>>8);
- }
- }
+uint8_t ff_mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
+
+#define INIT_2D_VLC_RL(rl, static_size)\
+{\
+ static RL_VLC_ELEM rl_vlc_table[static_size];\
+ INIT_VLC_STATIC(&rl.vlc, TEX_VLC_BITS, rl.n + 2,\
+ &rl.table_vlc[0][1], 4, 2,\
+ &rl.table_vlc[0][0], 4, 2, static_size);\
+\
+ rl.rl_vlc[0] = rl_vlc_table;\
+ init_2d_vlc_rl(&rl);\
}
-static void mpeg1_encode_block(MpegEncContext *s,
- DCTELEM *block,
- int n)
+static void init_2d_vlc_rl(RLTable *rl)
{
- int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
- int code, component;
- const uint16_t (*table_vlc)[2] = rl_mpeg1.table_vlc;
-
- last_index = s->block_last_index[n];
-
- /* DC coef */
- if (s->mb_intra) {
- component = (n <= 3 ? 0 : (n&1) + 1);
- dc = block[0]; /* overflow is impossible */
- diff = dc - s->last_dc[component];
- encode_dc(s, diff, component);
- s->last_dc[component] = dc;
- i = 1;
- if (s->intra_vlc_format)
- table_vlc = rl_mpeg2.table_vlc;
- } else {
- /* encode the first coefficient : needs to be done here because
- it is handled slightly differently */
- level = block[0];
- if (abs(level) == 1) {
- code = ((uint32_t)level >> 31); /* the sign bit */
- put_bits(&s->pb, 2, code | 0x02);
- i = 1;
+ int i;
+
+ for (i = 0; i < rl->vlc.table_size; i++) {
+ int code = rl->vlc.table[i][0];
+ int len = rl->vlc.table[i][1];
+ int level, run;
+
+ if (len == 0) { // illegal code
+ run = 65;
+ level = MAX_LEVEL;
+ } else if (len<0) { //more bits needed
+ run = 0;
+ level = code;
} else {
- i = 0;
- last_non_zero = -1;
- goto next_coef;
+ if (code == rl->n) { //esc
+ run = 65;
+ level = 0;
+ } else if (code == rl->n+1) { //eob
+ run = 0;
+ level = 127;
+ } else {
+ run = rl->table_run [code] + 1;
+ level = rl->table_level[code];
+ }
}
+ rl->rl_vlc[0][i].len = len;
+ rl->rl_vlc[0][i].level = level;
+ rl->rl_vlc[0][i].run = run;
}
+}
- /* now quantify & encode AC coefs */
- last_non_zero = i - 1;
+void ff_mpeg12_common_init(MpegEncContext *s)
+{
- for(;i<=last_index;i++) {
- j = s->intra_scantable.permutated[i];
- level = block[j];
- next_coef:
-#if 0
- if (level != 0)
- dprintf("level[%d]=%d\n", i, level);
-#endif
- /* encode using VLC */
- if (level != 0) {
- run = i - last_non_zero - 1;
+ s->y_dc_scale_table =
+ s->c_dc_scale_table = ff_mpeg2_dc_scale_table[s->intra_dc_precision];
- alevel= level;
- MASK_ABS(sign, alevel)
- sign&=1;
+}
- if (alevel <= mpeg1_max_level[0][run]){
- code= mpeg1_index_run[0][run] + alevel - 1;
- /* store the vlc & sign at once */
- put_bits(&s->pb, table_vlc[code][1]+1, (table_vlc[code][0]<<1) + sign);
- } else {
- /* escape seems to be pretty rare <5% so i dont optimize it */
- put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
- /* escape: only clip in this case */
- put_bits(&s->pb, 6, run);
- if(s->codec_id == CODEC_ID_MPEG1VIDEO){
- if (alevel < 128) {
- put_bits(&s->pb, 8, level & 0xff);
- } else {
- if (level < 0) {
- put_bits(&s->pb, 16, 0x8001 + level + 255);
- } else {
- put_bits(&s->pb, 16, level & 0xffff);
- }
- }
- }else{
- put_bits(&s->pb, 12, level & 0xfff);
- }
- }
- last_non_zero = i;
- }
- }
- /* end of block */
- put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
+void ff_mpeg1_clean_buffers(MpegEncContext *s)
+{
+ s->last_dc[0] = 1 << (7 + s->intra_dc_precision);
+ s->last_dc[1] = s->last_dc[0];
+ s->last_dc[2] = s->last_dc[0];
+ memset(s->last_mv, 0, sizeof(s->last_mv));
}
-#endif //CONFIG_ENCODERS
+
/******************************************/
/* decoding */
-static VLC dc_lum_vlc;
-static VLC dc_chroma_vlc;
-static VLC mv_vlc;
+VLC ff_dc_lum_vlc;
+VLC ff_dc_chroma_vlc;
+
static VLC mbincr_vlc;
static VLC mb_ptype_vlc;
static VLC mb_btype_vlc;
static VLC mb_pat_vlc;
-static void init_vlcs(void)
+av_cold void ff_mpeg12_init_vlcs(void)
{
static int done = 0;
if (!done) {
done = 1;
- init_vlc(&dc_lum_vlc, DC_VLC_BITS, 12,
- vlc_dc_lum_bits, 1, 1,
- vlc_dc_lum_code, 2, 2, 1);
- init_vlc(&dc_chroma_vlc, DC_VLC_BITS, 12,
- vlc_dc_chroma_bits, 1, 1,
- vlc_dc_chroma_code, 2, 2, 1);
- init_vlc(&mv_vlc, MV_VLC_BITS, 17,
- &mbMotionVectorTable[0][1], 2, 1,
- &mbMotionVectorTable[0][0], 2, 1, 1);
- init_vlc(&mbincr_vlc, MBINCR_VLC_BITS, 36,
- &mbAddrIncrTable[0][1], 2, 1,
- &mbAddrIncrTable[0][0], 2, 1, 1);
- init_vlc(&mb_pat_vlc, MB_PAT_VLC_BITS, 64,
- &mbPatTable[0][1], 2, 1,
- &mbPatTable[0][0], 2, 1, 1);
-
- init_vlc(&mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7,
- &table_mb_ptype[0][1], 2, 1,
- &table_mb_ptype[0][0], 2, 1, 1);
- init_vlc(&mb_btype_vlc, MB_BTYPE_VLC_BITS, 11,
- &table_mb_btype[0][1], 2, 1,
- &table_mb_btype[0][0], 2, 1, 1);
- init_rl(&rl_mpeg1, 1);
- init_rl(&rl_mpeg2, 1);
-
- init_2d_vlc_rl(&rl_mpeg1, 1);
- init_2d_vlc_rl(&rl_mpeg2, 1);
+ INIT_VLC_STATIC(&ff_dc_lum_vlc, DC_VLC_BITS, 12,
+ ff_mpeg12_vlc_dc_lum_bits, 1, 1,
+ ff_mpeg12_vlc_dc_lum_code, 2, 2, 512);
+ INIT_VLC_STATIC(&ff_dc_chroma_vlc, DC_VLC_BITS, 12,
+ ff_mpeg12_vlc_dc_chroma_bits, 1, 1,
+ ff_mpeg12_vlc_dc_chroma_code, 2, 2, 514);
+ INIT_VLC_STATIC(&mv_vlc, MV_VLC_BITS, 17,
+ &ff_mpeg12_mbMotionVectorTable[0][1], 2, 1,
+ &ff_mpeg12_mbMotionVectorTable[0][0], 2, 1, 518);
+ INIT_VLC_STATIC(&mbincr_vlc, MBINCR_VLC_BITS, 36,
+ &ff_mpeg12_mbAddrIncrTable[0][1], 2, 1,
+ &ff_mpeg12_mbAddrIncrTable[0][0], 2, 1, 538);
+ INIT_VLC_STATIC(&mb_pat_vlc, MB_PAT_VLC_BITS, 64,
+ &ff_mpeg12_mbPatTable[0][1], 2, 1,
+ &ff_mpeg12_mbPatTable[0][0], 2, 1, 512);
+
+ INIT_VLC_STATIC(&mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7,
+ &table_mb_ptype[0][1], 2, 1,
+ &table_mb_ptype[0][0], 2, 1, 64);
+ INIT_VLC_STATIC(&mb_btype_vlc, MB_BTYPE_VLC_BITS, 11,
+ &table_mb_btype[0][1], 2, 1,
+ &table_mb_btype[0][0], 2, 1, 64);
+ ff_init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
+ ff_init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
+
+ INIT_2D_VLC_RL(ff_rl_mpeg1, 680);
+ INIT_2D_VLC_RL(ff_rl_mpeg2, 674);
}
}
static inline int get_dmv(MpegEncContext *s)
{
- if(get_bits1(&s->gb))
+ if (get_bits1(&s->gb))
return 1 - (get_bits1(&s->gb) << 1);
else
return 0;
}
}
-/* motion type (for mpeg2) */
+static void exchange_uv(MpegEncContext *s)
+{
+ DCTELEM (*tmp)[64];
+
+ tmp = s->pblocks[4];
+ s->pblocks[4] = s->pblocks[5];
+ s->pblocks[5] = tmp;
+}
+
+/* motion type (for MPEG-2) */
#define MT_FIELD 1
#define MT_FRAME 2
#define MT_16X8 2
#define MT_DMV 3
-static int mpeg_decode_mb(MpegEncContext *s,
- DCTELEM block[12][64])
+static int mpeg_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
{
int i, j, k, cbp, val, mb_type, motion_type;
- const int mb_block_count = 4 + (1<< s->chroma_format);
+ const int mb_block_count = 4 + (1 << s->chroma_format);
- dprintf("decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
+ av_dlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
- assert(s->mb_skipped==0);
+ assert(s->mb_skipped == 0);
if (s->mb_skip_run-- != 0) {
- if(s->pict_type == I_TYPE){
- av_log(s->avctx, AV_LOG_ERROR, "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
-
- /* skip mb */
- s->mb_intra = 0;
- for(i=0;i<12;i++)
- s->block_last_index[i] = -1;
- if(s->picture_structure == PICT_FRAME)
- s->mv_type = MV_TYPE_16X16;
- else
- s->mv_type = MV_TYPE_FIELD;
- if (s->pict_type == P_TYPE) {
- /* if P type, zero motion vector is implied */
- s->mv_dir = MV_DIR_FORWARD;
- s->mv[0][0][0] = s->mv[0][0][1] = 0;
- s->last_mv[0][0][0] = s->last_mv[0][0][1] = 0;
- s->last_mv[0][1][0] = s->last_mv[0][1][1] = 0;
- s->field_select[0][0]= s->picture_structure - 1;
+ if (s->pict_type == AV_PICTURE_TYPE_P) {
s->mb_skipped = 1;
- s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]= MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16;
+ s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride] = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16;
} else {
int mb_type;
- if(s->mb_x)
- mb_type= s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride - 1];
+ if (s->mb_x)
+ mb_type = s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1];
else
- mb_type= s->current_picture.mb_type[ s->mb_width + (s->mb_y-1)*s->mb_stride - 1]; // FIXME not sure if this is allowed in mpeg at all,
- if(IS_INTRA(mb_type))
+ mb_type = s->current_picture.f.mb_type[s->mb_width + (s->mb_y - 1) * s->mb_stride - 1]; // FIXME not sure if this is allowed in MPEG at all
+ if (IS_INTRA(mb_type))
return -1;
-
- /* if B type, reuse previous vectors and directions */
- s->mv[0][0][0] = s->last_mv[0][0][0];
- s->mv[0][0][1] = s->last_mv[0][0][1];
- s->mv[1][0][0] = s->last_mv[1][0][0];
- s->mv[1][0][1] = s->last_mv[1][0][1];
-
- s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]=
+ s->current_picture.f.mb_type[s->mb_x + s->mb_y*s->mb_stride] =
mb_type | MB_TYPE_SKIP;
-// assert(s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride - 1]&(MB_TYPE_16x16|MB_TYPE_16x8));
+// assert(s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1] & (MB_TYPE_16x16 | MB_TYPE_16x8));
- if((s->mv[0][0][0]|s->mv[0][0][1]|s->mv[1][0][0]|s->mv[1][0][1])==0)
+ if ((s->mv[0][0][0] | s->mv[0][0][1] | s->mv[1][0][0] | s->mv[1][0][1]) == 0)
s->mb_skipped = 1;
}
return 0;
}
- switch(s->pict_type) {
+ switch (s->pict_type) {
default:
- case I_TYPE:
+ case AV_PICTURE_TYPE_I:
if (get_bits1(&s->gb) == 0) {
- if (get_bits1(&s->gb) == 0){
+ if (get_bits1(&s->gb) == 0) {
av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in I Frame at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
mb_type = MB_TYPE_INTRA;
}
break;
- case P_TYPE:
+ case AV_PICTURE_TYPE_P:
mb_type = get_vlc2(&s->gb, mb_ptype_vlc.table, MB_PTYPE_VLC_BITS, 1);
- if (mb_type < 0){
+ if (mb_type < 0) {
av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in P Frame at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
- mb_type = ptype2mb_type[ mb_type ];
+ mb_type = ptype2mb_type[mb_type];
break;
- case B_TYPE:
+ case AV_PICTURE_TYPE_B:
mb_type = get_vlc2(&s->gb, mb_btype_vlc.table, MB_BTYPE_VLC_BITS, 1);
- if (mb_type < 0){
+ if (mb_type < 0) {
av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in B Frame at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
- mb_type = btype2mb_type[ mb_type ];
+ mb_type = btype2mb_type[mb_type];
break;
}
- dprintf("mb_type=%x\n", mb_type);
+ av_dlog(s->avctx, "mb_type=%x\n", mb_type);
// motion_type = 0; /* avoid warning */
if (IS_INTRA(mb_type)) {
s->dsp.clear_blocks(s->block[0]);
- if(!s->chroma_y_shift){
+ if (!s->chroma_y_shift) {
s->dsp.clear_blocks(s->block[6]);
}
- /* compute dct type */
- if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var?
+ /* compute DCT type */
+ if (s->picture_structure == PICT_FRAME && // FIXME add an interlaced_dct coded var?
!s->frame_pred_frame_dct) {
s->interlaced_dct = get_bits1(&s->gb);
}
mpeg_decode_motion(s, s->mpeg_f_code[0][1], s->last_mv[0][0][1]);
skip_bits1(&s->gb); /* marker */
- }else
+ } else
memset(s->last_mv, 0, sizeof(s->last_mv)); /* reset mv prediction */
s->mb_intra = 1;
-#ifdef HAVE_XVMC
- //one 1 we memcpy blocks in xvmcvideo
- if(s->avctx->xvmc_acceleration > 1){
- XVMC_pack_pblocks(s,-1);//inter are always full blocks
- if(s->swap_uv){
+ // if 1, we memcpy blocks in xvmcvideo
+ if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) {
+ ff_xvmc_pack_pblocks(s, -1); // inter are always full blocks
+ if (s->swap_uv) {
exchange_uv(s);
}
}
-#endif
if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
- if(s->flags2 & CODEC_FLAG2_FAST){
- for(i=0;i<6;i++) {
- mpeg2_fast_decode_block_intra(s, s->pblocks[i], i);
+ if (s->flags2 & CODEC_FLAG2_FAST) {
+ for (i = 0; i < 6; i++) {
+ mpeg2_fast_decode_block_intra(s, *s->pblocks[i], i);
}
- }else{
- for(i=0;i<mb_block_count;i++) {
- if (mpeg2_decode_block_intra(s, s->pblocks[i], i) < 0)
+ } else {
+ for (i = 0; i < mb_block_count; i++) {
+ if (mpeg2_decode_block_intra(s, *s->pblocks[i], i) < 0)
return -1;
}
}
} else {
- for(i=0;i<6;i++) {
- if (mpeg1_decode_block_intra(s, s->pblocks[i], i) < 0)
+ for (i = 0; i < 6; i++) {
+ if (mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0)
return -1;
}
}
} else {
- if (mb_type & MB_TYPE_ZERO_MV){
+ if (mb_type & MB_TYPE_ZERO_MV) {
assert(mb_type & MB_TYPE_CBP);
- /* compute dct type */
- if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var?
- !s->frame_pred_frame_dct) {
- s->interlaced_dct = get_bits1(&s->gb);
- }
-
- if (IS_QUANT(mb_type))
- s->qscale = get_qscale(s);
-
s->mv_dir = MV_DIR_FORWARD;
- if(s->picture_structure == PICT_FRAME)
+ if (s->picture_structure == PICT_FRAME) {
+ if (!s->frame_pred_frame_dct)
+ s->interlaced_dct = get_bits1(&s->gb);
s->mv_type = MV_TYPE_16X16;
- else{
+ } else {
s->mv_type = MV_TYPE_FIELD;
mb_type |= MB_TYPE_INTERLACED;
- s->field_select[0][0]= s->picture_structure - 1;
+ s->field_select[0][0] = s->picture_structure - 1;
}
+
+ if (IS_QUANT(mb_type))
+ s->qscale = get_qscale(s);
+
s->last_mv[0][0][0] = 0;
s->last_mv[0][0][1] = 0;
s->last_mv[0][1][0] = 0;
s->last_mv[0][1][1] = 0;
s->mv[0][0][0] = 0;
s->mv[0][0][1] = 0;
- }else{
+ } else {
assert(mb_type & MB_TYPE_L0L1);
-//FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED
- /* get additionnal motion vector type */
+ // FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED
+ /* get additional motion vector type */
if (s->frame_pred_frame_dct)
motion_type = MT_FRAME;
- else{
+ else {
motion_type = get_bits(&s->gb, 2);
- }
-
- /* compute dct type */
- if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var?
- !s->frame_pred_frame_dct && HAS_CBP(mb_type)) {
- s->interlaced_dct = get_bits1(&s->gb);
+ if (s->picture_structure == PICT_FRAME && HAS_CBP(mb_type))
+ s->interlaced_dct = get_bits1(&s->gb);
}
if (IS_QUANT(mb_type))
s->qscale = get_qscale(s);
/* motion vectors */
- s->mv_dir = 0;
- for(i=0;i<2;i++) {
- if (USES_LIST(mb_type, i)) {
- s->mv_dir |= (MV_DIR_FORWARD >> i);
- dprintf("motion_type=%d\n", motion_type);
- switch(motion_type) {
- case MT_FRAME: /* or MT_16X8 */
- if (s->picture_structure == PICT_FRAME) {
+ s->mv_dir = (mb_type >> 13) & 3;
+ av_dlog(s->avctx, "motion_type=%d\n", motion_type);
+ switch (motion_type) {
+ case MT_FRAME: /* or MT_16X8 */
+ if (s->picture_structure == PICT_FRAME) {
+ mb_type |= MB_TYPE_16x16;
+ s->mv_type = MV_TYPE_16X16;
+ for (i = 0; i < 2; i++) {
+ if (USES_LIST(mb_type, i)) {
/* MT_FRAME */
- mb_type |= MB_TYPE_16x16;
- s->mv_type = MV_TYPE_16X16;
s->mv[i][0][0]= s->last_mv[i][0][0]= s->last_mv[i][1][0] =
mpeg_decode_motion(s, s->mpeg_f_code[i][0], s->last_mv[i][0][0]);
s->mv[i][0][1]= s->last_mv[i][0][1]= s->last_mv[i][1][1] =
mpeg_decode_motion(s, s->mpeg_f_code[i][1], s->last_mv[i][0][1]);
- /* full_pel: only for mpeg1 */
- if (s->full_pel[i]){
+ /* full_pel: only for MPEG-1 */
+ if (s->full_pel[i]) {
s->mv[i][0][0] <<= 1;
s->mv[i][0][1] <<= 1;
}
- } else {
+ }
+ }
+ } else {
+ mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+ s->mv_type = MV_TYPE_16X8;
+ for (i = 0; i < 2; i++) {
+ if (USES_LIST(mb_type, i)) {
/* MT_16X8 */
- mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
- s->mv_type = MV_TYPE_16X8;
- for(j=0;j<2;j++) {
+ for (j = 0; j < 2; j++) {
s->field_select[i][j] = get_bits1(&s->gb);
- for(k=0;k<2;k++) {
+ for (k = 0; k < 2; k++) {
val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],
s->last_mv[i][j][k]);
s->last_mv[i][j][k] = val;
- s->mv[i][j][k] = val;
+ s->mv[i][j][k] = val;
}
}
}
- break;
- case MT_FIELD:
- s->mv_type = MV_TYPE_FIELD;
- if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
- for(j=0;j<2;j++) {
+ }
+ }
+ break;
+ case MT_FIELD:
+ s->mv_type = MV_TYPE_FIELD;
+ if (s->picture_structure == PICT_FRAME) {
+ mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+ for (i = 0; i < 2; i++) {
+ if (USES_LIST(mb_type, i)) {
+ for (j = 0; j < 2; j++) {
s->field_select[i][j] = get_bits1(&s->gb);
val = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
s->last_mv[i][j][0]);
s->last_mv[i][j][0] = val;
- s->mv[i][j][0] = val;
- dprintf("fmx=%d\n", val);
+ s->mv[i][j][0] = val;
+ av_dlog(s->avctx, "fmx=%d\n", val);
val = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
s->last_mv[i][j][1] >> 1);
s->last_mv[i][j][1] = val << 1;
- s->mv[i][j][1] = val;
- dprintf("fmy=%d\n", val);
+ s->mv[i][j][1] = val;
+ av_dlog(s->avctx, "fmy=%d\n", val);
}
- } else {
- mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+ }
+ }
+ } else {
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+ for (i = 0; i < 2; i++) {
+ if (USES_LIST(mb_type, i)) {
s->field_select[i][0] = get_bits1(&s->gb);
- for(k=0;k<2;k++) {
+ for (k = 0; k < 2; k++) {
val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],
s->last_mv[i][0][k]);
s->last_mv[i][0][k] = val;
s->last_mv[i][1][k] = val;
- s->mv[i][0][k] = val;
+ s->mv[i][0][k] = val;
}
}
- break;
- case MT_DMV:
- {
- int dmx, dmy, mx, my, m;
-
- mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
- s->last_mv[i][0][0]);
- s->last_mv[i][0][0] = mx;
- s->last_mv[i][1][0] = mx;
- dmx = get_dmv(s);
- my = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
- s->last_mv[i][0][1] >> 1);
- dmy = get_dmv(s);
- s->mv_type = MV_TYPE_DMV;
-
-
- s->last_mv[i][0][1] = my<<1;
- s->last_mv[i][1][1] = my<<1;
-
- s->mv[i][0][0] = mx;
- s->mv[i][0][1] = my;
- s->mv[i][1][0] = mx;//not used
- s->mv[i][1][1] = my;//not used
-
- if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
-
- //m = 1 + 2 * s->top_field_first;
- m = s->top_field_first ? 1 : 3;
-
- /* top -> top pred */
- s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
- s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1;
- m = 4 - m;
- s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
- s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1;
- } else {
- mb_type |= MB_TYPE_16x16;
-
- s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx;
- s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy;
- if(s->picture_structure == PICT_TOP_FIELD)
- s->mv[i][2][1]--;
- else
- s->mv[i][2][1]++;
- }
+ }
+ }
+ break;
+ case MT_DMV:
+ s->mv_type = MV_TYPE_DMV;
+ for (i = 0; i < 2; i++) {
+ if (USES_LIST(mb_type, i)) {
+ int dmx, dmy, mx, my, m;
+ const int my_shift = s->picture_structure == PICT_FRAME;
+
+ mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
+ s->last_mv[i][0][0]);
+ s->last_mv[i][0][0] = mx;
+ s->last_mv[i][1][0] = mx;
+ dmx = get_dmv(s);
+ my = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
+ s->last_mv[i][0][1] >> my_shift);
+ dmy = get_dmv(s);
+
+
+ s->last_mv[i][0][1] = my << my_shift;
+ s->last_mv[i][1][1] = my << my_shift;
+
+ s->mv[i][0][0] = mx;
+ s->mv[i][0][1] = my;
+ s->mv[i][1][0] = mx; // not used
+ s->mv[i][1][1] = my; // not used
+
+ if (s->picture_structure == PICT_FRAME) {
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+
+ // m = 1 + 2 * s->top_field_first;
+ m = s->top_field_first ? 1 : 3;
+
+ /* top -> top pred */
+ s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
+ s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1;
+ m = 4 - m;
+ s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
+ s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1;
+ } else {
+ mb_type |= MB_TYPE_16x16;
+
+ s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx;
+ s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy;
+ if (s->picture_structure == PICT_TOP_FIELD)
+ s->mv[i][2][1]--;
+ else
+ s->mv[i][2][1]++;
}
- break;
- default:
- av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y);
- return -1;
}
}
+ break;
+ default:
+ av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
}
}
if (HAS_CBP(mb_type)) {
s->dsp.clear_blocks(s->block[0]);
- if(!s->chroma_y_shift){
- s->dsp.clear_blocks(s->block[6]);
- }
-
cbp = get_vlc2(&s->gb, mb_pat_vlc.table, MB_PAT_VLC_BITS, 1);
- if (cbp < 0 || ((cbp == 0) && (s->chroma_format < 2)) ){
+ if (mb_block_count > 6) {
+ cbp <<= mb_block_count - 6;
+ cbp |= get_bits(&s->gb, mb_block_count - 6);
+ s->dsp.clear_blocks(s->block[6]);
+ }
+ if (cbp <= 0) {
av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
- if(mb_block_count > 6){
- cbp<<= mb_block_count-6;
- cbp |= get_bits(&s->gb, mb_block_count-6);
- }
-#ifdef HAVE_XVMC
- //on 1 we memcpy blocks in xvmcvideo
- if(s->avctx->xvmc_acceleration > 1){
- XVMC_pack_pblocks(s,cbp);
- if(s->swap_uv){
+ //if 1, we memcpy blocks in xvmcvideo
+ if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) {
+ ff_xvmc_pack_pblocks(s, cbp);
+ if (s->swap_uv) {
exchange_uv(s);
}
}
-#endif
if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
- if(s->flags2 & CODEC_FLAG2_FAST){
- for(i=0;i<6;i++) {
- if(cbp & 32) {
- mpeg2_fast_decode_block_non_intra(s, s->pblocks[i], i);
+ if (s->flags2 & CODEC_FLAG2_FAST) {
+ for (i = 0; i < 6; i++) {
+ if (cbp & 32) {
+ mpeg2_fast_decode_block_non_intra(s, *s->pblocks[i], i);
} else {
s->block_last_index[i] = -1;
}
- cbp+=cbp;
+ cbp += cbp;
}
- }else{
- cbp<<= 12-mb_block_count;
+ } else {
+ cbp <<= 12-mb_block_count;
- for(i=0;i<mb_block_count;i++) {
- if ( cbp & (1<<11) ) {
- if (mpeg2_decode_block_non_intra(s, s->pblocks[i], i) < 0)
+ for (i = 0; i < mb_block_count; i++) {
+ if (cbp & (1 << 11)) {
+ if (mpeg2_decode_block_non_intra(s, *s->pblocks[i], i) < 0)
return -1;
} else {
s->block_last_index[i] = -1;
}
- cbp+=cbp;
+ cbp += cbp;
}
}
} else {
- if(s->flags2 & CODEC_FLAG2_FAST){
- for(i=0;i<6;i++) {
+ if (s->flags2 & CODEC_FLAG2_FAST) {
+ for (i = 0; i < 6; i++) {
if (cbp & 32) {
- mpeg1_fast_decode_block_inter(s, s->pblocks[i], i);
+ mpeg1_fast_decode_block_inter(s, *s->pblocks[i], i);
} else {
s->block_last_index[i] = -1;
}
- cbp+=cbp;
+ cbp += cbp;
}
- }else{
- for(i=0;i<6;i++) {
+ } else {
+ for (i = 0; i < 6; i++) {
if (cbp & 32) {
- if (mpeg1_decode_block_inter(s, s->pblocks[i], i) < 0)
+ if (mpeg1_decode_block_inter(s, *s->pblocks[i], i) < 0)
return -1;
} else {
s->block_last_index[i] = -1;
}
- cbp+=cbp;
+ cbp += cbp;
}
}
}
- }else{
- for(i=0;i<12;i++)
+ } else {
+ for (i = 0; i < 12; i++)
s->block_last_index[i] = -1;
}
}
- s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]= mb_type;
-
- return 0;
-}
-
-/* as h263, but only 17 codes */
-static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
-{
- int code, sign, val, l, shift;
-
- code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2);
- if (code == 0) {
- return pred;
- }
- if (code < 0) {
- return 0xffff;
- }
-
- sign = get_bits1(&s->gb);
- shift = fcode - 1;
- val = code;
- if (shift) {
- val = (val - 1) << shift;
- val |= get_bits(&s->gb, shift);
- val++;
- }
- if (sign)
- val = -val;
- val += pred;
-
- /* modulo decoding */
- l= INT_BIT - 5 - shift;
- val = (val<<l)>>l;
- return val;
-}
-
-static inline int decode_dc(GetBitContext *gb, int component)
-{
- int code, diff;
-
- if (component == 0) {
- code = get_vlc2(gb, dc_lum_vlc.table, DC_VLC_BITS, 2);
- } else {
- code = get_vlc2(gb, dc_chroma_vlc.table, DC_VLC_BITS, 2);
- }
- if (code < 0){
- av_log(NULL, AV_LOG_ERROR, "invalid dc code at\n");
- return 0xffff;
- }
- if (code == 0) {
- diff = 0;
- } else {
- diff = get_xbits(gb, code);
- }
- return diff;
-}
-
-static inline int mpeg1_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
- int n)
-{
- int level, dc, diff, i, j, run;
- int component;
- RLTable *rl = &rl_mpeg1;
- uint8_t * const scantable= s->intra_scantable.permutated;
- const uint16_t *quant_matrix= s->intra_matrix;
- const int qscale= s->qscale;
-
- /* DC coef */
- component = (n <= 3 ? 0 : n - 4 + 1);
- diff = decode_dc(&s->gb, component);
- if (diff >= 0xffff)
- return -1;
- dc = s->last_dc[component];
- dc += diff;
- s->last_dc[component] = dc;
- block[0] = dc<<3;
- dprintf("dc=%d diff=%d\n", dc, diff);
- i = 0;
- {
- OPEN_READER(re, &s->gb);
- /* now quantify & encode AC coefs */
- for(;;) {
- UPDATE_CACHE(re, &s->gb);
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
- if(level == 127){
- break;
- } else if(level != 0) {
- i += run;
- j = scantable[i];
- level= (level*qscale*quant_matrix[j])>>4;
- level= (level-1)|1;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- LAST_SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
- if (level == -128) {
- level = SHOW_UBITS(re, &s->gb, 8) - 256; LAST_SKIP_BITS(re, &s->gb, 8);
- } else if (level == 0) {
- level = SHOW_UBITS(re, &s->gb, 8) ; LAST_SKIP_BITS(re, &s->gb, 8);
- }
- i += run;
- j = scantable[i];
- if(level<0){
- level= -level;
- level= (level*qscale*quant_matrix[j])>>4;
- level= (level-1)|1;
- level= -level;
- }else{
- level= (level*qscale*quant_matrix[j])>>4;
- level= (level-1)|1;
- }
- }
- if (i > 63){
- av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
-
- block[j] = level;
- }
- CLOSE_READER(re, &s->gb);
- }
- s->block_last_index[n] = i;
- return 0;
-}
-
-static inline int mpeg1_decode_block_inter(MpegEncContext *s,
- DCTELEM *block,
- int n)
-{
- int level, i, j, run;
- RLTable *rl = &rl_mpeg1;
- uint8_t * const scantable= s->intra_scantable.permutated;
- const uint16_t *quant_matrix= s->inter_matrix;
- const int qscale= s->qscale;
-
- {
- OPEN_READER(re, &s->gb);
- i = -1;
- /* special case for the first coef. no need to add a second vlc table */
- UPDATE_CACHE(re, &s->gb);
- if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
- level= (3*qscale*quant_matrix[0])>>5;
- level= (level-1)|1;
- if(GET_CACHE(re, &s->gb)&0x40000000)
- level= -level;
- block[0] = level;
- i++;
- SKIP_BITS(re, &s->gb, 2);
- if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- goto end;
- }
-
- /* now quantify & encode AC coefs */
- for(;;) {
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
- if(level != 0) {
- i += run;
- j = scantable[i];
- level= ((level*2+1)*qscale*quant_matrix[j])>>5;
- level= (level-1)|1;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
- if (level == -128) {
- level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
- } else if (level == 0) {
- level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8);
- }
- i += run;
- j = scantable[i];
- if(level<0){
- level= -level;
- level= ((level*2+1)*qscale*quant_matrix[j])>>5;
- level= (level-1)|1;
- level= -level;
- }else{
- level= ((level*2+1)*qscale*quant_matrix[j])>>5;
- level= (level-1)|1;
- }
- }
- if (i > 63){
- av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
-
- block[j] = level;
- if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- break;
- UPDATE_CACHE(re, &s->gb);
- }
-end:
- LAST_SKIP_BITS(re, &s->gb, 2);
- CLOSE_READER(re, &s->gb);
- }
- s->block_last_index[n] = i;
- return 0;
-}
-
-static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n)
-{
- int level, i, j, run;
- RLTable *rl = &rl_mpeg1;
- uint8_t * const scantable= s->intra_scantable.permutated;
- const int qscale= s->qscale;
-
- {
- OPEN_READER(re, &s->gb);
- i = -1;
- /* special case for the first coef. no need to add a second vlc table */
- UPDATE_CACHE(re, &s->gb);
- if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
- level= (3*qscale)>>1;
- level= (level-1)|1;
- if(GET_CACHE(re, &s->gb)&0x40000000)
- level= -level;
- block[0] = level;
- i++;
- SKIP_BITS(re, &s->gb, 2);
- if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- goto end;
- }
-
- /* now quantify & encode AC coefs */
- for(;;) {
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
- if(level != 0) {
- i += run;
- j = scantable[i];
- level= ((level*2+1)*qscale)>>1;
- level= (level-1)|1;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
- if (level == -128) {
- level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
- } else if (level == 0) {
- level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8);
- }
- i += run;
- j = scantable[i];
- if(level<0){
- level= -level;
- level= ((level*2+1)*qscale)>>1;
- level= (level-1)|1;
- level= -level;
- }else{
- level= ((level*2+1)*qscale)>>1;
- level= (level-1)|1;
- }
- }
-
- block[j] = level;
- if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- break;
- UPDATE_CACHE(re, &s->gb);
- }
-end:
- LAST_SKIP_BITS(re, &s->gb, 2);
- CLOSE_READER(re, &s->gb);
- }
- s->block_last_index[n] = i;
- return 0;
-}
-
-
-static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
- DCTELEM *block,
- int n)
-{
- int level, i, j, run;
- RLTable *rl = &rl_mpeg1;
- uint8_t * const scantable= s->intra_scantable.permutated;
- const uint16_t *quant_matrix;
- const int qscale= s->qscale;
- int mismatch;
-
- mismatch = 1;
-
- {
- OPEN_READER(re, &s->gb);
- i = -1;
- if (n < 4)
- quant_matrix = s->inter_matrix;
- else
- quant_matrix = s->chroma_inter_matrix;
-
- /* special case for the first coef. no need to add a second vlc table */
- UPDATE_CACHE(re, &s->gb);
- if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
- level= (3*qscale*quant_matrix[0])>>5;
- if(GET_CACHE(re, &s->gb)&0x40000000)
- level= -level;
- block[0] = level;
- mismatch ^= level;
- i++;
- SKIP_BITS(re, &s->gb, 2);
- if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- goto end;
- }
-
- /* now quantify & encode AC coefs */
- for(;;) {
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
- if(level != 0) {
- i += run;
- j = scantable[i];
- level= ((level*2+1)*qscale*quant_matrix[j])>>5;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
-
- i += run;
- j = scantable[i];
- if(level<0){
- level= ((-level*2+1)*qscale*quant_matrix[j])>>5;
- level= -level;
- }else{
- level= ((level*2+1)*qscale*quant_matrix[j])>>5;
- }
- }
- if (i > 63){
- av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
+ s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride] = mb_type;
- mismatch ^= level;
- block[j] = level;
- if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- break;
- UPDATE_CACHE(re, &s->gb);
- }
-end:
- LAST_SKIP_BITS(re, &s->gb, 2);
- CLOSE_READER(re, &s->gb);
- }
- block[63] ^= (mismatch & 1);
-
- s->block_last_index[n] = i;
return 0;
}
-static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
- DCTELEM *block,
- int n)
+static av_cold int mpeg_decode_init(AVCodecContext *avctx)
{
- int level, i, j, run;
- RLTable *rl = &rl_mpeg1;
- uint8_t * const scantable= s->intra_scantable.permutated;
- const int qscale= s->qscale;
- OPEN_READER(re, &s->gb);
- i = -1;
-
- /* special case for the first coef. no need to add a second vlc table */
- UPDATE_CACHE(re, &s->gb);
- if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
- level= (3*qscale)>>1;
- if(GET_CACHE(re, &s->gb)&0x40000000)
- level= -level;
- block[0] = level;
- i++;
- SKIP_BITS(re, &s->gb, 2);
- if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- goto end;
- }
-
- /* now quantify & encode AC coefs */
- for(;;) {
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
- if(level != 0) {
- i += run;
- j = scantable[i];
- level= ((level*2+1)*qscale)>>1;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
+ Mpeg1Context *s = avctx->priv_data;
+ MpegEncContext *s2 = &s->mpeg_enc_ctx;
+ int i;
- i += run;
- j = scantable[i];
- if(level<0){
- level= ((-level*2+1)*qscale)>>1;
- level= -level;
- }else{
- level= ((level*2+1)*qscale)>>1;
- }
- }
+ /* we need some permutation to store matrices,
+ * until MPV_common_init() sets the real permutation. */
+ for (i = 0; i < 64; i++)
+ s2->dsp.idct_permutation[i]=i;
- block[j] = level;
- if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- break;
- UPDATE_CACHE(re, &s->gb);
- }
-end:
- LAST_SKIP_BITS(re, &s->gb, 2);
- CLOSE_READER(re, &s->gb);
- s->block_last_index[n] = i;
- return 0;
-}
+ ff_MPV_decode_defaults(s2);
+ s->mpeg_enc_ctx.avctx = avctx;
+ s->mpeg_enc_ctx.flags = avctx->flags;
+ s->mpeg_enc_ctx.flags2 = avctx->flags2;
+ ff_mpeg12_common_init(&s->mpeg_enc_ctx);
+ ff_mpeg12_init_vlcs();
-static inline int mpeg2_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
- int n)
-{
- int level, dc, diff, i, j, run;
- int component;
- RLTable *rl;
- uint8_t * const scantable= s->intra_scantable.permutated;
- const uint16_t *quant_matrix;
- const int qscale= s->qscale;
- int mismatch;
-
- /* DC coef */
- if (n < 4){
- quant_matrix = s->intra_matrix;
- component = 0;
- }else{
- quant_matrix = s->chroma_intra_matrix;
- component = (n&1) + 1;
- }
- diff = decode_dc(&s->gb, component);
- if (diff >= 0xffff)
- return -1;
- dc = s->last_dc[component];
- dc += diff;
- s->last_dc[component] = dc;
- block[0] = dc << (3 - s->intra_dc_precision);
- dprintf("dc=%d\n", block[0]);
- mismatch = block[0] ^ 1;
- i = 0;
- if (s->intra_vlc_format)
- rl = &rl_mpeg2;
+ s->mpeg_enc_ctx_allocated = 0;
+ s->mpeg_enc_ctx.picture_number = 0;
+ s->repeat_field = 0;
+ s->mpeg_enc_ctx.codec_id = avctx->codec->id;
+ avctx->color_range = AVCOL_RANGE_MPEG;
+ if (avctx->codec->id == CODEC_ID_MPEG1VIDEO)
+ avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
else
- rl = &rl_mpeg1;
-
- {
- OPEN_READER(re, &s->gb);
- /* now quantify & encode AC coefs */
- for(;;) {
- UPDATE_CACHE(re, &s->gb);
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
- if(level == 127){
- break;
- } else if(level != 0) {
- i += run;
- j = scantable[i];
- level= (level*qscale*quant_matrix[j])>>4;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- LAST_SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
- i += run;
- j = scantable[i];
- if(level<0){
- level= (-level*qscale*quant_matrix[j])>>4;
- level= -level;
- }else{
- level= (level*qscale*quant_matrix[j])>>4;
- }
- }
- if (i > 63){
- av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
-
- mismatch^= level;
- block[j] = level;
- }
- CLOSE_READER(re, &s->gb);
- }
- block[63]^= mismatch&1;
-
- s->block_last_index[n] = i;
+ avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
return 0;
}
-static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
- int n)
+static int mpeg_decode_update_thread_context(AVCodecContext *avctx, const AVCodecContext *avctx_from)
{
- int level, dc, diff, j, run;
- int component;
- RLTable *rl;
- uint8_t * scantable= s->intra_scantable.permutated;
- const uint16_t *quant_matrix;
- const int qscale= s->qscale;
+ Mpeg1Context *ctx = avctx->priv_data, *ctx_from = avctx_from->priv_data;
+ MpegEncContext *s = &ctx->mpeg_enc_ctx, *s1 = &ctx_from->mpeg_enc_ctx;
+ int err;
- /* DC coef */
- if (n < 4){
- quant_matrix = s->intra_matrix;
- component = 0;
- }else{
- quant_matrix = s->chroma_intra_matrix;
- component = (n&1) + 1;
- }
- diff = decode_dc(&s->gb, component);
- if (diff >= 0xffff)
- return -1;
- dc = s->last_dc[component];
- dc += diff;
- s->last_dc[component] = dc;
- block[0] = dc << (3 - s->intra_dc_precision);
- if (s->intra_vlc_format)
- rl = &rl_mpeg2;
- else
- rl = &rl_mpeg1;
-
- {
- OPEN_READER(re, &s->gb);
- /* now quantify & encode AC coefs */
- for(;;) {
- UPDATE_CACHE(re, &s->gb);
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
- if(level == 127){
- break;
- } else if(level != 0) {
- scantable += run;
- j = *scantable;
- level= (level*qscale*quant_matrix[j])>>4;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- LAST_SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
- scantable += run;
- j = *scantable;
- if(level<0){
- level= (-level*qscale*quant_matrix[j])>>4;
- level= -level;
- }else{
- level= (level*qscale*quant_matrix[j])>>4;
- }
- }
-
- block[j] = level;
- }
- CLOSE_READER(re, &s->gb);
- }
-
- s->block_last_index[n] = scantable - s->intra_scantable.permutated;
- return 0;
-}
-
-typedef struct Mpeg1Context {
- MpegEncContext mpeg_enc_ctx;
- int mpeg_enc_ctx_allocated; /* true if decoding context allocated */
- int repeat_field; /* true if we must repeat the field */
- AVPanScan pan_scan; /** some temporary storage for the panscan */
- int slice_count;
- int swap_uv;//indicate VCR2
- int save_aspect_info;
- AVRational frame_rate_ext; ///< MPEG-2 specific framerate modificator
-
-} Mpeg1Context;
-
-static int mpeg_decode_init(AVCodecContext *avctx)
-{
- Mpeg1Context *s = avctx->priv_data;
- MpegEncContext *s2 = &s->mpeg_enc_ctx;
- int i;
+ if (avctx == avctx_from || !ctx_from->mpeg_enc_ctx_allocated || !s1->context_initialized)
+ return 0;
- //we need some parmutation to store
- //matrixes, until MPV_common_init()
- //set the real permutatuon
- for(i=0;i<64;i++)
- s2->dsp.idct_permutation[i]=i;
+ err = ff_mpeg_update_thread_context(avctx, avctx_from);
+ if (err) return err;
- MPV_decode_defaults(s2);
+ if (!ctx->mpeg_enc_ctx_allocated)
+ memcpy(s + 1, s1 + 1, sizeof(Mpeg1Context) - sizeof(MpegEncContext));
- s->mpeg_enc_ctx.avctx= avctx;
- s->mpeg_enc_ctx.flags= avctx->flags;
- s->mpeg_enc_ctx.flags2= avctx->flags2;
- common_init(&s->mpeg_enc_ctx);
- init_vlcs();
+ if (!(s->pict_type == AV_PICTURE_TYPE_B || s->low_delay))
+ s->picture_number++;
- s->mpeg_enc_ctx_allocated = 0;
- s->mpeg_enc_ctx.picture_number = 0;
- s->repeat_field = 0;
- s->mpeg_enc_ctx.codec_id= avctx->codec->id;
return 0;
}
static void quant_matrix_rebuild(uint16_t *matrix, const uint8_t *old_perm,
- const uint8_t *new_perm){
+ const uint8_t *new_perm)
+{
uint16_t temp_matrix[64];
int i;
- memcpy(temp_matrix,matrix,64*sizeof(uint16_t));
+ memcpy(temp_matrix, matrix, 64 * sizeof(uint16_t));
- for(i=0;i<64;i++){
+ for (i = 0; i < 64; i++) {
matrix[new_perm[i]] = temp_matrix[old_perm[i]];
}
}
-//Call this function when we know all parameters
-//it may be called in different places for mpeg1 and mpeg2
-static int mpeg_decode_postinit(AVCodecContext *avctx){
+static const enum PixelFormat pixfmt_xvmc_mpg2_420[] = {
+ PIX_FMT_XVMC_MPEG2_IDCT,
+ PIX_FMT_XVMC_MPEG2_MC,
+ PIX_FMT_NONE };
+
+static enum PixelFormat mpeg_get_pixelformat(AVCodecContext *avctx)
+{
+ Mpeg1Context *s1 = avctx->priv_data;
+ MpegEncContext *s = &s1->mpeg_enc_ctx;
+
+ if (avctx->xvmc_acceleration)
+ return avctx->get_format(avctx, pixfmt_xvmc_mpg2_420);
+ else if (avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) {
+ if (avctx->codec_id == CODEC_ID_MPEG1VIDEO)
+ return PIX_FMT_VDPAU_MPEG1;
+ else
+ return PIX_FMT_VDPAU_MPEG2;
+ } else {
+ if (s->chroma_format < 2)
+ return avctx->get_format(avctx, ff_hwaccel_pixfmt_list_420);
+ else if (s->chroma_format == 2)
+ return PIX_FMT_YUV422P;
+ else
+ return PIX_FMT_YUV444P;
+ }
+}
+
+/* Call this function when we know all parameters.
+ * It may be called in different places for MPEG-1 and MPEG-2. */
+static int mpeg_decode_postinit(AVCodecContext *avctx)
+{
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
uint8_t old_permutation[64];
- if (
- (s1->mpeg_enc_ctx_allocated == 0)||
- avctx->coded_width != s->width ||
- avctx->coded_height != s->height||
- s1->save_aspect_info != s->aspect_ratio_info||
+ if ((s1->mpeg_enc_ctx_allocated == 0) ||
+ avctx->coded_width != s->width ||
+ avctx->coded_height != s->height ||
+ s1->save_width != s->width ||
+ s1->save_height != s->height ||
+ s1->save_aspect_info != s->aspect_ratio_info ||
+ s1->save_progressive_seq != s->progressive_sequence ||
0)
{
if (s1->mpeg_enc_ctx_allocated) {
- ParseContext pc= s->parse_context;
- s->parse_context.buffer=0;
- MPV_common_end(s);
- s->parse_context= pc;
+ ParseContext pc = s->parse_context;
+ s->parse_context.buffer = 0;
+ ff_MPV_common_end(s);
+ s->parse_context = pc;
}
- if( (s->width == 0 )||(s->height == 0))
+ if ((s->width == 0) || (s->height == 0))
return -2;
avcodec_set_dimensions(avctx, s->width, s->height);
- avctx->bit_rate = s->bit_rate;
- s1->save_aspect_info = s->aspect_ratio_info;
-
- //low_delay may be forced, in this case we will have B frames
- //that behave like P frames
- avctx->has_b_frames = !(s->low_delay);
-
- if(avctx->sub_id==1){//s->codec_id==avctx->codec_id==CODEC_ID
- //mpeg1 fps
- avctx->time_base.den= ff_frame_rate_tab[s->frame_rate_index].num;
- avctx->time_base.num= ff_frame_rate_tab[s->frame_rate_index].den;
- //mpeg1 aspect
- avctx->sample_aspect_ratio= av_d2q(
- 1.0/mpeg1_aspect[s->aspect_ratio_info], 255);
-
- }else{//mpeg2
- //mpeg2 fps
- av_reduce(
- &s->avctx->time_base.den,
- &s->avctx->time_base.num,
- ff_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num,
- ff_frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den,
- 1<<30);
- //mpeg2 aspect
- if(s->aspect_ratio_info > 1){
- if( (s1->pan_scan.width == 0 )||(s1->pan_scan.height == 0) ){
- s->avctx->sample_aspect_ratio=
- av_div_q(
- mpeg2_aspect[s->aspect_ratio_info],
- (AVRational){s->width, s->height}
- );
- }else{
- s->avctx->sample_aspect_ratio=
- av_div_q(
- mpeg2_aspect[s->aspect_ratio_info],
- (AVRational){s1->pan_scan.width, s1->pan_scan.height}
- );
+ avctx->bit_rate = s->bit_rate;
+ s1->save_aspect_info = s->aspect_ratio_info;
+ s1->save_width = s->width;
+ s1->save_height = s->height;
+ s1->save_progressive_seq = s->progressive_sequence;
+
+ /* low_delay may be forced, in this case we will have B-frames
+ * that behave like P-frames. */
+ avctx->has_b_frames = !s->low_delay;
+
+ if (avctx->codec_id == CODEC_ID_MPEG1VIDEO) {
+ //MPEG-1 fps
+ avctx->time_base.den = avpriv_frame_rate_tab[s->frame_rate_index].num;
+ avctx->time_base.num = avpriv_frame_rate_tab[s->frame_rate_index].den;
+ //MPEG-1 aspect
+ avctx->sample_aspect_ratio = av_d2q(1.0/ff_mpeg1_aspect[s->aspect_ratio_info], 255);
+ avctx->ticks_per_frame=1;
+ } else {//MPEG-2
+ //MPEG-2 fps
+ av_reduce(&s->avctx->time_base.den,
+ &s->avctx->time_base.num,
+ avpriv_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num*2,
+ avpriv_frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den,
+ 1 << 30);
+ avctx->ticks_per_frame = 2;
+ //MPEG-2 aspect
+ if (s->aspect_ratio_info > 1) {
+ AVRational dar =
+ av_mul_q(av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
+ (AVRational) {s1->pan_scan.width, s1->pan_scan.height}),
+ (AVRational) {s->width, s->height});
+
+ // we ignore the spec here and guess a bit as reality does not match the spec, see for example
+ // res_change_ffmpeg_aspect.ts and sequence-display-aspect.mpg
+ // issue1613, 621, 562
+ if ((s1->pan_scan.width == 0) || (s1->pan_scan.height == 0) ||
+ (av_cmp_q(dar, (AVRational) {4, 3}) && av_cmp_q(dar, (AVRational) {16, 9}))) {
+ s->avctx->sample_aspect_ratio =
+ av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
+ (AVRational) {s->width, s->height});
+ } else {
+ s->avctx->sample_aspect_ratio =
+ av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
+ (AVRational) {s1->pan_scan.width, s1->pan_scan.height});
+//issue1613 4/3 16/9 -> 16/9
+//res_change_ffmpeg_aspect.ts 4/3 225/44 ->4/3
+//widescreen-issue562.mpg 4/3 16/9 -> 16/9
+// s->avctx->sample_aspect_ratio = av_mul_q(s->avctx->sample_aspect_ratio, (AVRational) {s->width, s->height});
+//av_log(NULL, AV_LOG_ERROR, "A %d/%d\n", ff_mpeg2_aspect[s->aspect_ratio_info].num, ff_mpeg2_aspect[s->aspect_ratio_info].den);
+//av_log(NULL, AV_LOG_ERROR, "B %d/%d\n", s->avctx->sample_aspect_ratio.num, s->avctx->sample_aspect_ratio.den);
}
- }else{
- s->avctx->sample_aspect_ratio=
- mpeg2_aspect[s->aspect_ratio_info];
- }
- }//mpeg2
-
- if(avctx->xvmc_acceleration){
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_xvmc_mpg2_420);
- }else{
- if(s->chroma_format < 2){
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_yuv_420);
- }else
- if(s->chroma_format == 2){
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_yuv_422);
- }else
- if(s->chroma_format > 2){
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_yuv_444);
+ } else {
+ s->avctx->sample_aspect_ratio =
+ ff_mpeg2_aspect[s->aspect_ratio_info];
}
- }
- //until then pix_fmt may be changed right after codec init
- if( avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT )
- if( avctx->idct_algo == FF_IDCT_AUTO )
+ } // MPEG-2
+
+ avctx->pix_fmt = mpeg_get_pixelformat(avctx);
+ avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
+ // until then pix_fmt may be changed right after codec init
+ if (avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT ||
+ avctx->hwaccel ||
+ s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
+ if (avctx->idct_algo == FF_IDCT_AUTO)
avctx->idct_algo = FF_IDCT_SIMPLE;
- //quantization matrixes may need reordering
- //if dct permutation is changed
- memcpy(old_permutation,s->dsp.idct_permutation,64*sizeof(uint8_t));
+ /* Quantization matrices may need reordering
+ * if DCT permutation is changed. */
+ memcpy(old_permutation, s->dsp.idct_permutation, 64 * sizeof(uint8_t));
- if (MPV_common_init(s) < 0)
+ if (ff_MPV_common_init(s) < 0)
return -2;
- quant_matrix_rebuild(s->intra_matrix, old_permutation,s->dsp.idct_permutation);
- quant_matrix_rebuild(s->inter_matrix, old_permutation,s->dsp.idct_permutation);
- quant_matrix_rebuild(s->chroma_intra_matrix,old_permutation,s->dsp.idct_permutation);
- quant_matrix_rebuild(s->chroma_inter_matrix,old_permutation,s->dsp.idct_permutation);
+ quant_matrix_rebuild(s->intra_matrix, old_permutation, s->dsp.idct_permutation);
+ quant_matrix_rebuild(s->inter_matrix, old_permutation, s->dsp.idct_permutation);
+ quant_matrix_rebuild(s->chroma_intra_matrix, old_permutation, s->dsp.idct_permutation);
+ quant_matrix_rebuild(s->chroma_inter_matrix, old_permutation, s->dsp.idct_permutation);
s1->mpeg_enc_ctx_allocated = 1;
}
MpegEncContext *s = &s1->mpeg_enc_ctx;
int ref, f_code, vbv_delay;
- if(mpeg_decode_postinit(s->avctx) < 0)
- return -2;
-
init_get_bits(&s->gb, buf, buf_size*8);
ref = get_bits(&s->gb, 10); /* temporal ref */
s->pict_type = get_bits(&s->gb, 3);
- if(s->pict_type == 0 || s->pict_type > 3)
+ if (s->pict_type == 0 || s->pict_type > 3)
return -1;
- vbv_delay= get_bits(&s->gb, 16);
- if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) {
+ vbv_delay = get_bits(&s->gb, 16);
+ if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
s->full_pel[0] = get_bits1(&s->gb);
f_code = get_bits(&s->gb, 3);
- if (f_code == 0 && avctx->error_resilience >= FF_ER_COMPLIANT)
+ if (f_code == 0 && (avctx->err_recognition & AV_EF_BITSTREAM))
return -1;
s->mpeg_f_code[0][0] = f_code;
s->mpeg_f_code[0][1] = f_code;
}
- if (s->pict_type == B_TYPE) {
+ if (s->pict_type == AV_PICTURE_TYPE_B) {
s->full_pel[1] = get_bits1(&s->gb);
f_code = get_bits(&s->gb, 3);
- if (f_code == 0 && avctx->error_resilience >= FF_ER_COMPLIANT)
+ if (f_code == 0 && (avctx->err_recognition & AV_EF_BITSTREAM))
return -1;
s->mpeg_f_code[1][0] = f_code;
s->mpeg_f_code[1][1] = f_code;
}
- s->current_picture.pict_type= s->pict_type;
- s->current_picture.key_frame= s->pict_type == I_TYPE;
+ s->current_picture.f.pict_type = s->pict_type;
+ s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
- if(avctx->debug & FF_DEBUG_PICT_INFO)
+ if (avctx->debug & FF_DEBUG_PICT_INFO)
av_log(avctx, AV_LOG_DEBUG, "vbv_delay %d, ref %d type:%d\n", vbv_delay, ref, s->pict_type);
s->y_dc_scale = 8;
s->c_dc_scale = 8;
- s->first_slice = 1;
return 0;
}
int horiz_size_ext, vert_size_ext;
int bit_rate_ext;
- skip_bits(&s->gb, 1); /* profil and level esc*/
- s->avctx->profile= get_bits(&s->gb, 3);
- s->avctx->level= get_bits(&s->gb, 4);
+ skip_bits(&s->gb, 1); /* profile and level esc*/
+ s->avctx->profile = get_bits(&s->gb, 3);
+ s->avctx->level = get_bits(&s->gb, 4);
s->progressive_sequence = get_bits1(&s->gb); /* progressive_sequence */
- s->chroma_format = get_bits(&s->gb, 2); /* chroma_format 1=420, 2=422, 3=444 */
- horiz_size_ext = get_bits(&s->gb, 2);
- vert_size_ext = get_bits(&s->gb, 2);
- s->width |= (horiz_size_ext << 12);
- s->height |= (vert_size_ext << 12);
+ s->chroma_format = get_bits(&s->gb, 2); /* chroma_format 1=420, 2=422, 3=444 */
+ horiz_size_ext = get_bits(&s->gb, 2);
+ vert_size_ext = get_bits(&s->gb, 2);
+ s->width |= (horiz_size_ext << 12);
+ s->height |= (vert_size_ext << 12);
bit_rate_ext = get_bits(&s->gb, 12); /* XXX: handle it */
s->bit_rate += (bit_rate_ext << 18) * 400;
skip_bits1(&s->gb); /* marker */
- s->avctx->rc_buffer_size += get_bits(&s->gb, 8)*1024*16<<10;
+ s->avctx->rc_buffer_size += get_bits(&s->gb, 8) * 1024 * 16 << 10;
s->low_delay = get_bits1(&s->gb);
- if(s->flags & CODEC_FLAG_LOW_DELAY) s->low_delay=1;
+ if (s->flags & CODEC_FLAG_LOW_DELAY)
+ s->low_delay = 1;
- s1->frame_rate_ext.num = get_bits(&s->gb, 2)+1;
- s1->frame_rate_ext.den = get_bits(&s->gb, 5)+1;
+ s1->frame_rate_ext.num = get_bits(&s->gb, 2) + 1;
+ s1->frame_rate_ext.den = get_bits(&s->gb, 5) + 1;
- dprintf("sequence extension\n");
- s->codec_id= s->avctx->codec_id= CODEC_ID_MPEG2VIDEO;
- s->avctx->sub_id = 2; /* indicates mpeg2 found */
+ av_dlog(s->avctx, "sequence extension\n");
+ s->codec_id = s->avctx->codec_id = CODEC_ID_MPEG2VIDEO;
- if(s->avctx->debug & FF_DEBUG_PICT_INFO)
+ if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG, "profile: %d, level: %d vbv buffer: %d, bitrate:%d\n",
s->avctx->profile, s->avctx->level, s->avctx->rc_buffer_size, s->bit_rate);
static void mpeg_decode_sequence_display_extension(Mpeg1Context *s1)
{
- MpegEncContext *s= &s1->mpeg_enc_ctx;
+ MpegEncContext *s = &s1->mpeg_enc_ctx;
int color_description, w, h;
skip_bits(&s->gb, 3); /* video format */
- color_description= get_bits1(&s->gb);
- if(color_description){
- skip_bits(&s->gb, 8); /* color primaries */
- skip_bits(&s->gb, 8); /* transfer_characteristics */
- skip_bits(&s->gb, 8); /* matrix_coefficients */
+ color_description = get_bits1(&s->gb);
+ if (color_description) {
+ s->avctx->color_primaries = get_bits(&s->gb, 8);
+ s->avctx->color_trc = get_bits(&s->gb, 8);
+ s->avctx->colorspace = get_bits(&s->gb, 8);
}
- w= get_bits(&s->gb, 14);
- skip_bits(&s->gb, 1); //marker
- h= get_bits(&s->gb, 14);
+ w = get_bits(&s->gb, 14);
skip_bits(&s->gb, 1); //marker
+ h = get_bits(&s->gb, 14);
+ // remaining 3 bits are zero padding
- s1->pan_scan.width= 16*w;
- s1->pan_scan.height=16*h;
+ s1->pan_scan.width = 16 * w;
+ s1->pan_scan.height = 16 * h;
- if(s->avctx->debug & FF_DEBUG_PICT_INFO)
+ if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG, "sde w:%d, h:%d\n", w, h);
}
static void mpeg_decode_picture_display_extension(Mpeg1Context *s1)
{
- MpegEncContext *s= &s1->mpeg_enc_ctx;
- int i,nofco;
+ MpegEncContext *s = &s1->mpeg_enc_ctx;
+ int i, nofco;
nofco = 1;
- if(s->progressive_sequence){
- if(s->repeat_first_field){
+ if (s->progressive_sequence) {
+ if (s->repeat_first_field) {
nofco++;
- if(s->top_field_first)
+ if (s->top_field_first)
nofco++;
}
- }else{
- if(s->picture_structure == PICT_FRAME){
+ } else {
+ if (s->picture_structure == PICT_FRAME) {
nofco++;
- if(s->repeat_first_field)
+ if (s->repeat_first_field)
nofco++;
}
}
- for(i=0; i<nofco; i++){
- s1->pan_scan.position[i][0]= get_sbits(&s->gb, 16);
- skip_bits(&s->gb, 1); //marker
- s1->pan_scan.position[i][1]= get_sbits(&s->gb, 16);
- skip_bits(&s->gb, 1); //marker
+ for (i = 0; i < nofco; i++) {
+ s1->pan_scan.position[i][0] = get_sbits(&s->gb, 16);
+ skip_bits(&s->gb, 1); // marker
+ s1->pan_scan.position[i][1] = get_sbits(&s->gb, 16);
+ skip_bits(&s->gb, 1); // marker
}
- if(s->avctx->debug & FF_DEBUG_PICT_INFO)
+ if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG, "pde (%d,%d) (%d,%d) (%d,%d)\n",
- s1->pan_scan.position[0][0], s1->pan_scan.position[0][1],
- s1->pan_scan.position[1][0], s1->pan_scan.position[1][1],
- s1->pan_scan.position[2][0], s1->pan_scan.position[2][1]
- );
+ s1->pan_scan.position[0][0], s1->pan_scan.position[0][1],
+ s1->pan_scan.position[1][0], s1->pan_scan.position[1][1],
+ s1->pan_scan.position[2][0], s1->pan_scan.position[2][1]);
}
-static void mpeg_decode_quant_matrix_extension(MpegEncContext *s)
+static int load_matrix(MpegEncContext *s, uint16_t matrix0[64], uint16_t matrix1[64], int intra)
{
- int i, v, j;
-
- dprintf("matrix extension\n");
+ int i;
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->intra_matrix[j] = v;
- s->chroma_intra_matrix[j] = v;
- }
- }
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->inter_matrix[j] = v;
- s->chroma_inter_matrix[j] = v;
- }
- }
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->chroma_intra_matrix[j] = v;
+ for (i = 0; i < 64; i++) {
+ int j = s->dsp.idct_permutation[ff_zigzag_direct[i]];
+ int v = get_bits(&s->gb, 8);
+ if (v == 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "matrix damaged\n");
+ return -1;
}
- }
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->chroma_inter_matrix[j] = v;
+ if (intra && i == 0 && v != 8) {
+ av_log(s->avctx, AV_LOG_ERROR, "intra matrix invalid, ignoring\n");
+ v = 8; // needed by pink.mpg / issue1046
}
+ matrix0[j] = v;
+ if (matrix1)
+ matrix1[j] = v;
}
+ return 0;
+}
+
+static void mpeg_decode_quant_matrix_extension(MpegEncContext *s)
+{
+ av_dlog(s->avctx, "matrix extension\n");
+
+ if (get_bits1(&s->gb)) load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1);
+ if (get_bits1(&s->gb)) load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0);
+ if (get_bits1(&s->gb)) load_matrix(s, s->chroma_intra_matrix, NULL , 1);
+ if (get_bits1(&s->gb)) load_matrix(s, s->chroma_inter_matrix, NULL , 0);
}
-static void mpeg_decode_picture_coding_extension(MpegEncContext *s)
+static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1)
{
+ MpegEncContext *s = &s1->mpeg_enc_ctx;
+
s->full_pel[0] = s->full_pel[1] = 0;
s->mpeg_f_code[0][0] = get_bits(&s->gb, 4);
s->mpeg_f_code[0][1] = get_bits(&s->gb, 4);
s->mpeg_f_code[1][0] = get_bits(&s->gb, 4);
s->mpeg_f_code[1][1] = get_bits(&s->gb, 4);
- s->intra_dc_precision = get_bits(&s->gb, 2);
- s->picture_structure = get_bits(&s->gb, 2);
- s->top_field_first = get_bits1(&s->gb);
- s->frame_pred_frame_dct = get_bits1(&s->gb);
+ if (!s->pict_type && s1->mpeg_enc_ctx_allocated) {
+ av_log(s->avctx, AV_LOG_ERROR, "Missing picture start code, guessing missing values\n");
+ if (s->mpeg_f_code[1][0] == 15 && s->mpeg_f_code[1][1] == 15) {
+ if (s->mpeg_f_code[0][0] == 15 && s->mpeg_f_code[0][1] == 15)
+ s->pict_type = AV_PICTURE_TYPE_I;
+ else
+ s->pict_type = AV_PICTURE_TYPE_P;
+ } else
+ s->pict_type = AV_PICTURE_TYPE_B;
+ s->current_picture.f.pict_type = s->pict_type;
+ s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
+ }
+ s->intra_dc_precision = get_bits(&s->gb, 2);
+ s->picture_structure = get_bits(&s->gb, 2);
+ s->top_field_first = get_bits1(&s->gb);
+ s->frame_pred_frame_dct = get_bits1(&s->gb);
s->concealment_motion_vectors = get_bits1(&s->gb);
- s->q_scale_type = get_bits1(&s->gb);
- s->intra_vlc_format = get_bits1(&s->gb);
- s->alternate_scan = get_bits1(&s->gb);
- s->repeat_first_field = get_bits1(&s->gb);
- s->chroma_420_type = get_bits1(&s->gb);
- s->progressive_frame = get_bits1(&s->gb);
-
- if(s->picture_structure == PICT_FRAME){
- s->first_field=0;
- s->v_edge_pos= 16*s->mb_height;
- }else{
- s->first_field ^= 1;
- s->v_edge_pos= 8*s->mb_height;
- memset(s->mbskip_table, 0, s->mb_stride*s->mb_height);
- }
+ s->q_scale_type = get_bits1(&s->gb);
+ s->intra_vlc_format = get_bits1(&s->gb);
+ s->alternate_scan = get_bits1(&s->gb);
+ s->repeat_first_field = get_bits1(&s->gb);
+ s->chroma_420_type = get_bits1(&s->gb);
+ s->progressive_frame = get_bits1(&s->gb);
- if(s->alternate_scan){
- ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable , ff_alternate_vertical_scan);
- ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable , ff_alternate_vertical_scan);
- }else{
- ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable , ff_zigzag_direct);
- ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable , ff_zigzag_direct);
+ if (s->progressive_sequence && !s->progressive_frame) {
+ s->progressive_frame = 1;
+ av_log(s->avctx, AV_LOG_ERROR, "interlaced frame in progressive sequence, ignoring\n");
}
- /* composite display not parsed */
- dprintf("intra_dc_precision=%d\n", s->intra_dc_precision);
- dprintf("picture_structure=%d\n", s->picture_structure);
- dprintf("top field first=%d\n", s->top_field_first);
- dprintf("repeat first field=%d\n", s->repeat_first_field);
- dprintf("conceal=%d\n", s->concealment_motion_vectors);
- dprintf("intra_vlc_format=%d\n", s->intra_vlc_format);
- dprintf("alternate_scan=%d\n", s->alternate_scan);
- dprintf("frame_pred_frame_dct=%d\n", s->frame_pred_frame_dct);
- dprintf("progressive_frame=%d\n", s->progressive_frame);
-}
+ if (s->picture_structure == 0 || (s->progressive_frame && s->picture_structure != PICT_FRAME)) {
+ av_log(s->avctx, AV_LOG_ERROR, "picture_structure %d invalid, ignoring\n", s->picture_structure);
+ s->picture_structure = PICT_FRAME;
+ }
-static void mpeg_decode_extension(AVCodecContext *avctx,
- const uint8_t *buf, int buf_size)
-{
- Mpeg1Context *s1 = avctx->priv_data;
- MpegEncContext *s = &s1->mpeg_enc_ctx;
- int ext_type;
+ if (s->progressive_sequence && !s->frame_pred_frame_dct) {
+ av_log(s->avctx, AV_LOG_WARNING, "invalid frame_pred_frame_dct\n");
+ }
- init_get_bits(&s->gb, buf, buf_size*8);
+ if (s->picture_structure == PICT_FRAME) {
+ s->first_field = 0;
+ s->v_edge_pos = 16 * s->mb_height;
+ } else {
+ s->first_field ^= 1;
+ s->v_edge_pos = 8 * s->mb_height;
+ memset(s->mbskip_table, 0, s->mb_stride * s->mb_height);
+ }
- ext_type = get_bits(&s->gb, 4);
- switch(ext_type) {
- case 0x1:
- mpeg_decode_sequence_extension(s1);
- break;
- case 0x2:
- mpeg_decode_sequence_display_extension(s1);
- break;
- case 0x3:
- mpeg_decode_quant_matrix_extension(s);
- break;
- case 0x7:
- mpeg_decode_picture_display_extension(s1);
- break;
- case 0x8:
- mpeg_decode_picture_coding_extension(s);
- break;
+ if (s->alternate_scan) {
+ ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan);
+ ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan);
+ } else {
+ ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct);
+ ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
}
-}
-static void exchange_uv(MpegEncContext *s){
- short * tmp = s->pblocks[4];
- s->pblocks[4] = s->pblocks[5];
- s->pblocks[5] = tmp;
+ /* composite display not parsed */
+ av_dlog(s->avctx, "intra_dc_precision=%d\n", s->intra_dc_precision);
+ av_dlog(s->avctx, "picture_structure=%d\n", s->picture_structure);
+ av_dlog(s->avctx, "top field first=%d\n", s->top_field_first);
+ av_dlog(s->avctx, "repeat first field=%d\n", s->repeat_first_field);
+ av_dlog(s->avctx, "conceal=%d\n", s->concealment_motion_vectors);
+ av_dlog(s->avctx, "intra_vlc_format=%d\n", s->intra_vlc_format);
+ av_dlog(s->avctx, "alternate_scan=%d\n", s->alternate_scan);
+ av_dlog(s->avctx, "frame_pred_frame_dct=%d\n", s->frame_pred_frame_dct);
+ av_dlog(s->avctx, "progressive_frame=%d\n", s->progressive_frame);
}
-static int mpeg_field_start(MpegEncContext *s){
- AVCodecContext *avctx= s->avctx;
+static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size)
+{
+ AVCodecContext *avctx = s->avctx;
Mpeg1Context *s1 = (Mpeg1Context*)s;
/* start frame decoding */
- if(s->first_field || s->picture_structure==PICT_FRAME){
- if(MPV_frame_start(s, avctx) < 0)
+ if (s->first_field || s->picture_structure == PICT_FRAME) {
+ if (ff_MPV_frame_start(s, avctx) < 0)
return -1;
ff_er_frame_start(s);
/* first check if we must repeat the frame */
- s->current_picture_ptr->repeat_pict = 0;
+ s->current_picture_ptr->f.repeat_pict = 0;
if (s->repeat_first_field) {
if (s->progressive_sequence) {
if (s->top_field_first)
- s->current_picture_ptr->repeat_pict = 4;
+ s->current_picture_ptr->f.repeat_pict = 4;
else
- s->current_picture_ptr->repeat_pict = 2;
+ s->current_picture_ptr->f.repeat_pict = 2;
} else if (s->progressive_frame) {
- s->current_picture_ptr->repeat_pict = 1;
+ s->current_picture_ptr->f.repeat_pict = 1;
}
}
- *s->current_picture_ptr->pan_scan= s1->pan_scan;
- }else{ //second field
- int i;
+ *s->current_picture_ptr->f.pan_scan = s1->pan_scan;
- if(!s->current_picture_ptr){
- av_log(s->avctx, AV_LOG_ERROR, "first field missing\n");
- return -1;
- }
+ if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_FRAME))
+ ff_thread_finish_setup(avctx);
+ } else { // second field
+ int i;
- for(i=0; i<4; i++){
- s->current_picture.data[i] = s->current_picture_ptr->data[i];
- if(s->picture_structure == PICT_BOTTOM_FIELD){
- s->current_picture.data[i] += s->current_picture_ptr->linesize[i];
- }
+ if (!s->current_picture_ptr) {
+ av_log(s->avctx, AV_LOG_ERROR, "first field missing\n");
+ return -1;
+ }
+
+ for (i = 0; i < 4; i++) {
+ s->current_picture.f.data[i] = s->current_picture_ptr->f.data[i];
+ if (s->picture_structure == PICT_BOTTOM_FIELD) {
+ s->current_picture.f.data[i] += s->current_picture_ptr->f.linesize[i];
}
+ }
+ }
+
+ if (avctx->hwaccel) {
+ if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0)
+ return -1;
}
-#ifdef HAVE_XVMC
+
// MPV_frame_start will call this function too,
// but we need to call it on every field
- if(s->avctx->xvmc_acceleration)
- XVMC_field_start(s,avctx);
-#endif
+ if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
+ if (ff_xvmc_field_start(s, avctx) < 0)
+ return -1;
return 0;
}
#define DECODE_SLICE_ERROR -1
-#define DECODE_SLICE_OK 0
+#define DECODE_SLICE_OK 0
/**
- * decodes a slice. MpegEncContext.mb_y must be set to the MB row from the startcode
- * @return DECODE_SLICE_ERROR if the slice is damaged<br>
- * DECODE_SLICE_OK if this slice is ok<br>
+ * Decode a slice.
+ * MpegEncContext.mb_y must be set to the MB row from the startcode.
+ * @return DECODE_SLICE_ERROR if the slice is damaged,
+ * DECODE_SLICE_OK if this slice is OK
*/
-static int mpeg_decode_slice(Mpeg1Context *s1, int mb_y,
+static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
const uint8_t **buf, int buf_size)
{
- MpegEncContext *s = &s1->mpeg_enc_ctx;
- AVCodecContext *avctx= s->avctx;
- int ret;
- const int field_pic= s->picture_structure != PICT_FRAME;
- const int lowres= s->avctx->lowres;
+ AVCodecContext *avctx = s->avctx;
+ const int lowres = s->avctx->lowres;
+ const int field_pic = s->picture_structure != PICT_FRAME;
- s->resync_mb_x=
- s->resync_mb_y= -1;
+ s->resync_mb_x =
+ s->resync_mb_y = -1;
- if (mb_y<<field_pic >= s->mb_height){
- av_log(s->avctx, AV_LOG_ERROR, "slice below image (%d >= %d)\n", mb_y, s->mb_height);
- return -1;
- }
+ assert(mb_y < s->mb_height);
- init_get_bits(&s->gb, *buf, buf_size*8);
+ init_get_bits(&s->gb, *buf, buf_size * 8);
ff_mpeg1_clean_buffers(s);
s->interlaced_dct = 0;
s->qscale = get_qscale(s);
- if(s->qscale == 0){
+ if (s->qscale == 0) {
av_log(s->avctx, AV_LOG_ERROR, "qscale == 0\n");
return -1;
}
skip_bits(&s->gb, 8);
}
- s->mb_x=0;
+ s->mb_x = 0;
- for(;;) {
- int code = get_vlc2(&s->gb, mbincr_vlc.table, MBINCR_VLC_BITS, 2);
- if (code < 0){
- av_log(s->avctx, AV_LOG_ERROR, "first mb_incr damaged\n");
- return -1;
- }
- if (code >= 33) {
- if (code == 33) {
- s->mb_x += 33;
+ if (mb_y == 0 && s->codec_tag == AV_RL32("SLIF")) {
+ skip_bits1(&s->gb);
+ } else {
+ while (get_bits_left(&s->gb) > 0) {
+ int code = get_vlc2(&s->gb, mbincr_vlc.table, MBINCR_VLC_BITS, 2);
+ if (code < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "first mb_incr damaged\n");
+ return -1;
+ }
+ if (code >= 33) {
+ if (code == 33) {
+ s->mb_x += 33;
+ }
+ /* otherwise, stuffing, nothing to do */
+ } else {
+ s->mb_x += code;
+ break;
}
- /* otherwise, stuffing, nothing to do */
- } else {
- s->mb_x += code;
- break;
}
}
- s->resync_mb_x= s->mb_x;
- s->resync_mb_y= s->mb_y= mb_y;
- s->mb_skip_run= 0;
+ if (s->mb_x >= (unsigned)s->mb_width) {
+ av_log(s->avctx, AV_LOG_ERROR, "initial skip overflow\n");
+ return -1;
+ }
+
+ if (avctx->hwaccel) {
+ const uint8_t *buf_end, *buf_start = *buf - 4; /* include start_code */
+ int start_code = -1;
+ buf_end = avpriv_mpv_find_start_code(buf_start + 2, *buf + buf_size, &start_code);
+ if (buf_end < *buf + buf_size)
+ buf_end -= 4;
+ s->mb_y = mb_y;
+ if (avctx->hwaccel->decode_slice(avctx, buf_start, buf_end - buf_start) < 0)
+ return DECODE_SLICE_ERROR;
+ *buf = buf_end;
+ return DECODE_SLICE_OK;
+ }
+
+ s->resync_mb_x = s->mb_x;
+ s->resync_mb_y = s->mb_y = mb_y;
+ s->mb_skip_run = 0;
ff_init_block_index(s);
- if (s->mb_y==0 && s->mb_x==0 && (s->first_field || s->picture_structure==PICT_FRAME)) {
- if(s->avctx->debug&FF_DEBUG_PICT_INFO){
+ if (s->mb_y == 0 && s->mb_x == 0 && (s->first_field || s->picture_structure == PICT_FRAME)) {
+ if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
av_log(s->avctx, AV_LOG_DEBUG, "qp:%d fc:%2d%2d%2d%2d %s %s %s %s %s dc:%d pstruct:%d fdct:%d cmv:%d qtype:%d ivlc:%d rff:%d %s\n",
- s->qscale, s->mpeg_f_code[0][0],s->mpeg_f_code[0][1],s->mpeg_f_code[1][0],s->mpeg_f_code[1][1],
- s->pict_type == I_TYPE ? "I" : (s->pict_type == P_TYPE ? "P" : (s->pict_type == B_TYPE ? "B" : "S")),
- s->progressive_sequence ? "ps" :"", s->progressive_frame ? "pf" : "", s->alternate_scan ? "alt" :"", s->top_field_first ? "top" :"",
- s->intra_dc_precision, s->picture_structure, s->frame_pred_frame_dct, s->concealment_motion_vectors,
- s->q_scale_type, s->intra_vlc_format, s->repeat_first_field, s->chroma_420_type ? "420" :"");
+ s->qscale, s->mpeg_f_code[0][0], s->mpeg_f_code[0][1], s->mpeg_f_code[1][0], s->mpeg_f_code[1][1],
+ s->pict_type == AV_PICTURE_TYPE_I ? "I" : (s->pict_type == AV_PICTURE_TYPE_P ? "P" : (s->pict_type == AV_PICTURE_TYPE_B ? "B" : "S")),
+ s->progressive_sequence ? "ps" :"", s->progressive_frame ? "pf" : "", s->alternate_scan ? "alt" :"", s->top_field_first ? "top" :"",
+ s->intra_dc_precision, s->picture_structure, s->frame_pred_frame_dct, s->concealment_motion_vectors,
+ s->q_scale_type, s->intra_vlc_format, s->repeat_first_field, s->chroma_420_type ? "420" :"");
}
}
- for(;;) {
-#ifdef HAVE_XVMC
- //one 1 we memcpy blocks in xvmcvideo
- if(s->avctx->xvmc_acceleration > 1)
- XVMC_init_block(s);//set s->block
-#endif
-
- ret = mpeg_decode_mb(s, s->block);
- s->chroma_qscale= s->qscale;
+ for (;;) {
+ // If 1, we memcpy blocks in xvmcvideo.
+ if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1)
+ ff_xvmc_init_block(s); // set s->block
- dprintf("ret=%d\n", ret);
- if (ret < 0)
+ if (mpeg_decode_mb(s, s->block) < 0)
return -1;
- if(s->current_picture.motion_val[0] && !s->encoding){ //note motion_val is normally NULL unless we want to extract the MVs
- const int wrap = field_pic ? 2*s->b8_stride : s->b8_stride;
- int xy = s->mb_x*2 + s->mb_y*2*wrap;
+ if (s->current_picture.f.motion_val[0] && !s->encoding) { // note motion_val is normally NULL unless we want to extract the MVs
+ const int wrap = s->b8_stride;
+ int xy = s->mb_x * 2 + s->mb_y * 2 * wrap;
+ int b8_xy = 4 * (s->mb_x + s->mb_y * s->mb_stride);
int motion_x, motion_y, dir, i;
- if(field_pic && !s->first_field)
- xy += wrap/2;
- for(i=0; i<2; i++){
- for(dir=0; dir<2; dir++){
- if (s->mb_intra || (dir==1 && s->pict_type != B_TYPE)) {
+ for (i = 0; i < 2; i++) {
+ for (dir = 0; dir < 2; dir++) {
+ if (s->mb_intra || (dir == 1 && s->pict_type != AV_PICTURE_TYPE_B)) {
motion_x = motion_y = 0;
- }else if (s->mv_type == MV_TYPE_16X16 || (s->mv_type == MV_TYPE_FIELD && field_pic)){
+ } else if (s->mv_type == MV_TYPE_16X16 || (s->mv_type == MV_TYPE_FIELD && field_pic)) {
motion_x = s->mv[dir][0][0];
motion_y = s->mv[dir][0][1];
} else /*if ((s->mv_type == MV_TYPE_FIELD) || (s->mv_type == MV_TYPE_16X8))*/ {
motion_y = s->mv[dir][i][1];
}
- s->current_picture.motion_val[dir][xy ][0] = motion_x;
- s->current_picture.motion_val[dir][xy ][1] = motion_y;
- s->current_picture.motion_val[dir][xy + 1][0] = motion_x;
- s->current_picture.motion_val[dir][xy + 1][1] = motion_y;
- s->current_picture.ref_index [dir][xy ]=
- s->current_picture.ref_index [dir][xy + 1]= s->field_select[dir][i];
- assert(s->field_select[dir][i]==0 || s->field_select[dir][i]==1);
+ s->current_picture.f.motion_val[dir][xy ][0] = motion_x;
+ s->current_picture.f.motion_val[dir][xy ][1] = motion_y;
+ s->current_picture.f.motion_val[dir][xy + 1][0] = motion_x;
+ s->current_picture.f.motion_val[dir][xy + 1][1] = motion_y;
+ s->current_picture.f.ref_index [dir][b8_xy ] =
+ s->current_picture.f.ref_index [dir][b8_xy + 1] = s->field_select[dir][i];
+ assert(s->field_select[dir][i] == 0 || s->field_select[dir][i] == 1);
}
xy += wrap;
+ b8_xy +=2;
}
}
s->dest[0] += 16 >> lowres;
- s->dest[1] += 16 >> (s->chroma_x_shift + lowres);
- s->dest[2] += 16 >> (s->chroma_x_shift + lowres);
+ s->dest[1] +=(16 >> lowres) >> s->chroma_x_shift;
+ s->dest[2] +=(16 >> lowres) >> s->chroma_x_shift;
- MPV_decode_mb(s, s->block);
+ ff_MPV_decode_mb(s, s->block);
if (++s->mb_x >= s->mb_width) {
- const int mb_size= 16>>s->avctx->lowres;
+ const int mb_size = 16 >> s->avctx->lowres;
- ff_draw_horiz_band(s, mb_size*s->mb_y, mb_size);
+ ff_draw_horiz_band(s, mb_size*(s->mb_y >> field_pic), mb_size);
+ ff_MPV_report_decode_progress(s);
s->mb_x = 0;
- s->mb_y++;
+ s->mb_y += 1 << field_pic;
- if(s->mb_y<<field_pic >= s->mb_height){
- int left= s->gb.size_in_bits - get_bits_count(&s->gb);
- int is_d10= s->chroma_format==2 && s->pict_type==I_TYPE && avctx->profile==0 && avctx->level==5
- && s->intra_dc_precision == 2 && s->q_scale_type == 1 && s->alternate_scan == 0
- && s->progressive_frame == 0 /* vbv_delay == 0xBBB || 0xE10*/;
+ if (s->mb_y >= s->mb_height) {
+ int left = get_bits_left(&s->gb);
+ int is_d10 = s->chroma_format == 2 && s->pict_type == AV_PICTURE_TYPE_I && avctx->profile == 0 && avctx->level == 5
+ && s->intra_dc_precision == 2 && s->q_scale_type == 1 && s->alternate_scan == 0
+ && s->progressive_frame == 0 /* vbv_delay == 0xBBB || 0xE10*/;
- if(left < 0 || (left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10)
- || (avctx->error_resilience >= FF_ER_AGGRESSIVE && left>8)){
+ if (left < 0 || (left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10)
+ || ((avctx->err_recognition & AV_EF_BUFFER) && left > 8)) {
av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d %0X\n", left, show_bits(&s->gb, FFMIN(left, 23)));
return -1;
- }else
+ } else
goto eos;
}
/* skip mb handling */
if (s->mb_skip_run == -1) {
- /* read again increment */
+ /* read increment again */
s->mb_skip_run = 0;
- for(;;) {
+ for (;;) {
int code = get_vlc2(&s->gb, mbincr_vlc.table, MBINCR_VLC_BITS, 2);
- if (code < 0){
+ if (code < 0) {
av_log(s->avctx, AV_LOG_ERROR, "mb incr damaged\n");
return -1;
}
if (code >= 33) {
if (code == 33) {
s->mb_skip_run += 33;
- }else if(code == 35){
- if(s->mb_skip_run != 0 || show_bits(&s->gb, 15) != 0){
+ } else if (code == 35) {
+ if (s->mb_skip_run != 0 || show_bits(&s->gb, 15) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "slice mismatch\n");
return -1;
}
break;
}
}
+ if (s->mb_skip_run) {
+ int i;
+ if (s->pict_type == AV_PICTURE_TYPE_I) {
+ av_log(s->avctx, AV_LOG_ERROR, "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
+
+ /* skip mb */
+ s->mb_intra = 0;
+ for (i = 0; i < 12; i++)
+ s->block_last_index[i] = -1;
+ if (s->picture_structure == PICT_FRAME)
+ s->mv_type = MV_TYPE_16X16;
+ else
+ s->mv_type = MV_TYPE_FIELD;
+ if (s->pict_type == AV_PICTURE_TYPE_P) {
+ /* if P type, zero motion vector is implied */
+ s->mv_dir = MV_DIR_FORWARD;
+ s->mv[0][0][0] = s->mv[0][0][1] = 0;
+ s->last_mv[0][0][0] = s->last_mv[0][0][1] = 0;
+ s->last_mv[0][1][0] = s->last_mv[0][1][1] = 0;
+ s->field_select[0][0] = (s->picture_structure - 1) & 1;
+ } else {
+ /* if B type, reuse previous vectors and directions */
+ s->mv[0][0][0] = s->last_mv[0][0][0];
+ s->mv[0][0][1] = s->last_mv[0][0][1];
+ s->mv[1][0][0] = s->last_mv[1][0][0];
+ s->mv[1][0][1] = s->last_mv[1][0][1];
+ }
+ }
}
}
eos: // end of slice
- *buf += get_bits_count(&s->gb)/8 - 1;
+ *buf += (get_bits_count(&s->gb)-1)/8;
//printf("y %d %d %d %d\n", s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y);
return 0;
}
-static int slice_decode_thread(AVCodecContext *c, void *arg){
- MpegEncContext *s= arg;
- const uint8_t *buf= s->gb.buffer;
- int mb_y= s->start_mb_y;
+static int slice_decode_thread(AVCodecContext *c, void *arg)
+{
+ MpegEncContext *s = *(void**)arg;
+ const uint8_t *buf = s->gb.buffer;
+ int mb_y = s->start_mb_y;
+ const int field_pic = s->picture_structure != PICT_FRAME;
- s->error_count= 3*(s->end_mb_y - s->start_mb_y)*s->mb_width;
+ s->error_count = (3 * (s->end_mb_y - s->start_mb_y) * s->mb_width) >> field_pic;
- for(;;){
+ for (;;) {
uint32_t start_code;
int ret;
- ret= mpeg_decode_slice((Mpeg1Context*)s, mb_y, &buf, s->gb.buffer_end - buf);
+ ret = mpeg_decode_slice(s, mb_y, &buf, s->gb.buffer_end - buf);
emms_c();
//av_log(c, AV_LOG_DEBUG, "ret:%d resync:%d/%d mb:%d/%d ts:%d/%d ec:%d\n",
//ret, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, s->start_mb_y, s->end_mb_y, s->error_count);
- if(ret < 0){
- if(s->resync_mb_x>=0 && s->resync_mb_y>=0)
- ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, AC_ERROR|DC_ERROR|MV_ERROR);
- }else{
- ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
+ if (ret < 0) {
+ if (c->err_recognition & AV_EF_EXPLODE)
+ return ret;
+ if (s->resync_mb_x >= 0 && s->resync_mb_y >= 0)
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR);
+ } else {
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_AC_END | ER_DC_END | ER_MV_END);
}
- if(s->mb_y == s->end_mb_y)
+ if (s->mb_y == s->end_mb_y)
return 0;
- start_code= -1;
- buf = ff_find_start_code(buf, s->gb.buffer_end, &start_code);
- mb_y= start_code - SLICE_MIN_START_CODE;
- if(mb_y < 0 || mb_y >= s->end_mb_y)
+ start_code = -1;
+ buf = avpriv_mpv_find_start_code(buf, s->gb.buffer_end, &start_code);
+ mb_y= (start_code - SLICE_MIN_START_CODE) << field_pic;
+ if (s->picture_structure == PICT_BOTTOM_FIELD)
+ mb_y++;
+ if (mb_y < 0 || mb_y >= s->end_mb_y)
return -1;
}
-
- return 0; //not reached
}
/**
- * handles slice ends.
- * @return 1 if it seems to be the last slice of
+ * Handle slice ends.
+ * @return 1 if it seems to be the last slice
*/
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
{
if (!s1->mpeg_enc_ctx_allocated || !s->current_picture_ptr)
return 0;
-#ifdef HAVE_XVMC
- if(s->avctx->xvmc_acceleration)
- XVMC_field_end(s);
-#endif
+ if (s->avctx->hwaccel) {
+ if (s->avctx->hwaccel->end_frame(s->avctx) < 0)
+ av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
+ }
+
+ if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
+ ff_xvmc_field_end(s);
+
/* end of slice reached */
- if (/*s->mb_y<<field_pic == s->mb_height &&*/ !s->first_field) {
+ if (/*s->mb_y << field_pic == s->mb_height &&*/ !s->first_field) {
/* end of image */
- s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_MPEG2;
+ s->current_picture_ptr->f.qscale_type = FF_QSCALE_TYPE_MPEG2;
ff_er_frame_end(s);
- MPV_frame_end(s);
+ ff_MPV_frame_end(s);
- if (s->pict_type == B_TYPE || s->low_delay) {
- *pict= *(AVFrame*)s->current_picture_ptr;
+ if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
+ *pict = s->current_picture_ptr->f;
ff_print_debug_info(s, pict);
} else {
- s->picture_number++;
- /* latency of 1 frame for I and P frames */
+ if (avctx->active_thread_type & FF_THREAD_FRAME)
+ s->picture_number++;
+ /* latency of 1 frame for I- and P-frames */
/* XXX: use another variable than picture_number */
if (s->last_picture_ptr != NULL) {
- *pict= *(AVFrame*)s->last_picture_ptr;
+ *pict = s->last_picture_ptr->f;
ff_print_debug_info(s, pict);
}
}
{
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
- int width,height;
+ int width, height;
int i, v, j;
init_get_bits(&s->gb, buf, buf_size*8);
- width = get_bits(&s->gb, 12);
+ width = get_bits(&s->gb, 12);
height = get_bits(&s->gb, 12);
- if (width <= 0 || height <= 0 ||
- (width % 2) != 0 || (height % 2) != 0)
- return -1;
- s->aspect_ratio_info= get_bits(&s->gb, 4);
- if (s->aspect_ratio_info == 0)
+ if (width <= 0 || height <= 0)
return -1;
+ s->aspect_ratio_info = get_bits(&s->gb, 4);
+ if (s->aspect_ratio_info == 0) {
+ av_log(avctx, AV_LOG_ERROR, "aspect ratio has forbidden 0 value\n");
+ if (avctx->err_recognition & AV_EF_BITSTREAM)
+ return -1;
+ }
s->frame_rate_index = get_bits(&s->gb, 4);
if (s->frame_rate_index == 0 || s->frame_rate_index > 13)
return -1;
s->bit_rate = get_bits(&s->gb, 18) * 400;
if (get_bits1(&s->gb) == 0) /* marker */
return -1;
- s->width = width;
+ s->width = width;
s->height = height;
- s->avctx->rc_buffer_size= get_bits(&s->gb, 10) * 1024*16;
+ s->avctx->rc_buffer_size = get_bits(&s->gb, 10) * 1024 * 16;
skip_bits(&s->gb, 1);
/* get matrix */
if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- if(v==0){
- av_log(s->avctx, AV_LOG_ERROR, "intra matrix damaged\n");
- return -1;
- }
- j = s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->intra_matrix[j] = v;
- s->chroma_intra_matrix[j] = v;
- }
-#ifdef DEBUG
- dprintf("intra matrix present\n");
- for(i=0;i<64;i++)
- dprintf(" %d", s->intra_matrix[s->dsp.idct_permutation[i]]);
- dprintf("\n");
-#endif
+ load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1);
} else {
- for(i=0;i<64;i++) {
+ for (i = 0; i < 64; i++) {
j = s->dsp.idct_permutation[i];
v = ff_mpeg1_default_intra_matrix[i];
- s->intra_matrix[j] = v;
+ s->intra_matrix[j] = v;
s->chroma_intra_matrix[j] = v;
}
}
if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- if(v==0){
- av_log(s->avctx, AV_LOG_ERROR, "inter matrix damaged\n");
- return -1;
- }
- j = s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->inter_matrix[j] = v;
- s->chroma_inter_matrix[j] = v;
- }
-#ifdef DEBUG
- dprintf("non intra matrix present\n");
- for(i=0;i<64;i++)
- dprintf(" %d", s->inter_matrix[s->dsp.idct_permutation[i]]);
- dprintf("\n");
-#endif
+ load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0);
} else {
- for(i=0;i<64;i++) {
- int j= s->dsp.idct_permutation[i];
+ for (i = 0; i < 64; i++) {
+ int j = s->dsp.idct_permutation[i];
v = ff_mpeg1_default_non_intra_matrix[i];
- s->inter_matrix[j] = v;
+ s->inter_matrix[j] = v;
s->chroma_inter_matrix[j] = v;
}
}
- if(show_bits(&s->gb, 23) != 0){
+ if (show_bits(&s->gb, 23) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "sequence header damaged\n");
return -1;
}
- /* we set mpeg2 parameters so that it emulates mpeg1 */
+ /* we set MPEG-2 parameters so that it emulates MPEG-1 */
s->progressive_sequence = 1;
- s->progressive_frame = 1;
- s->picture_structure = PICT_FRAME;
+ s->progressive_frame = 1;
+ s->picture_structure = PICT_FRAME;
s->frame_pred_frame_dct = 1;
- s->chroma_format = 1;
- s->codec_id= s->avctx->codec_id= CODEC_ID_MPEG1VIDEO;
- avctx->sub_id = 1; /* indicates mpeg1 */
- s->out_format = FMT_MPEG1;
- s->swap_uv = 0;//AFAIK VCR2 don't have SEQ_HEADER
- if(s->flags & CODEC_FLAG_LOW_DELAY) s->low_delay=1;
-
- if(s->avctx->debug & FF_DEBUG_PICT_INFO)
+ s->chroma_format = 1;
+ s->codec_id = s->avctx->codec_id = CODEC_ID_MPEG1VIDEO;
+ s->out_format = FMT_MPEG1;
+ s->swap_uv = 0; // AFAIK VCR2 does not have SEQ_HEADER
+ if (s->flags & CODEC_FLAG_LOW_DELAY)
+ s->low_delay = 1;
+
+ if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d\n",
s->avctx->rc_buffer_size, s->bit_rate);
MpegEncContext *s = &s1->mpeg_enc_ctx;
int i, v;
- /* start new mpeg1 context decoding */
+ /* start new MPEG-1 context decoding */
s->out_format = FMT_MPEG1;
if (s1->mpeg_enc_ctx_allocated) {
- MPV_common_end(s);
+ ff_MPV_common_end(s);
}
s->width = avctx->coded_width;
s->height = avctx->coded_height;
- avctx->has_b_frames= 0; //true?
- s->low_delay= 1;
+ avctx->has_b_frames = 0; // true?
+ s->low_delay = 1;
- if(avctx->xvmc_acceleration){
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_xvmc_mpg2_420);
- }else{
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_yuv_420);
- }
+ avctx->pix_fmt = mpeg_get_pixelformat(avctx);
+ avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
- if( avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT )
- if( avctx->idct_algo == FF_IDCT_AUTO )
+ if (avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT || avctx->hwaccel ||
+ s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
+ if (avctx->idct_algo == FF_IDCT_AUTO)
avctx->idct_algo = FF_IDCT_SIMPLE;
- if (MPV_common_init(s) < 0)
+ if (ff_MPV_common_init(s) < 0)
return -1;
- exchange_uv(s);//common init reset pblocks, so we swap them here
- s->swap_uv = 1;// in case of xvmc we need to swap uv for each MB
+ exchange_uv(s); // common init reset pblocks, so we swap them here
+ s->swap_uv = 1; // in case of xvmc we need to swap uv for each MB
s1->mpeg_enc_ctx_allocated = 1;
- for(i=0;i<64;i++) {
- int j= s->dsp.idct_permutation[i];
+ for (i = 0; i < 64; i++) {
+ int j = s->dsp.idct_permutation[i];
v = ff_mpeg1_default_intra_matrix[i];
- s->intra_matrix[j] = v;
+ s->intra_matrix[j] = v;
s->chroma_intra_matrix[j] = v;
v = ff_mpeg1_default_non_intra_matrix[i];
- s->inter_matrix[j] = v;
+ s->inter_matrix[j] = v;
s->chroma_inter_matrix[j] = v;
}
- s->progressive_sequence = 1;
- s->progressive_frame = 1;
- s->picture_structure = PICT_FRAME;
- s->frame_pred_frame_dct = 1;
- s->chroma_format = 1;
- s->codec_id= s->avctx->codec_id= CODEC_ID_MPEG2VIDEO;
- avctx->sub_id = 2; /* indicates mpeg2 */
+ s->progressive_sequence = 1;
+ s->progressive_frame = 1;
+ s->picture_structure = PICT_FRAME;
+ s->frame_pred_frame_dct = 1;
+ s->chroma_format = 1;
+ s->codec_id = s->avctx->codec_id = CODEC_ID_MPEG2VIDEO;
+ s1->save_width = s->width;
+ s1->save_height = s->height;
+ s1->save_progressive_seq = s->progressive_sequence;
return 0;
}
static void mpeg_decode_user_data(AVCodecContext *avctx,
- const uint8_t *buf, int buf_size)
+ const uint8_t *p, int buf_size)
{
- const uint8_t *p;
- int len, flags;
- p = buf;
- len = buf_size;
+ const uint8_t *buf_end = p + buf_size;
/* we parse the DTG active format information */
- if (len >= 5 &&
+ if (buf_end - p >= 5 &&
p[0] == 'D' && p[1] == 'T' && p[2] == 'G' && p[3] == '1') {
- flags = p[4];
+ int flags = p[4];
p += 5;
- len -= 5;
if (flags & 0x80) {
/* skip event id */
- if (len < 2)
- return;
p += 2;
- len -= 2;
}
if (flags & 0x40) {
- if (len < 1)
+ if (buf_end - p < 1)
return;
avctx->dtg_active_format = p[0] & 0x0f;
}
}
static void mpeg_decode_gop(AVCodecContext *avctx,
- const uint8_t *buf, int buf_size){
- Mpeg1Context *s1 = avctx->priv_data;
+ const uint8_t *buf, int buf_size)
+{
+ Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
- int drop_frame_flag;
int time_code_hours, time_code_minutes;
int time_code_seconds, time_code_pictures;
int broken_link;
init_get_bits(&s->gb, buf, buf_size*8);
- drop_frame_flag = get_bits1(&s->gb);
+ skip_bits1(&s->gb); /* drop_frame_flag */
- time_code_hours=get_bits(&s->gb,5);
- time_code_minutes = get_bits(&s->gb,6);
- skip_bits1(&s->gb);//marker bit
- time_code_seconds = get_bits(&s->gb,6);
- time_code_pictures = get_bits(&s->gb,6);
+ time_code_hours = get_bits(&s->gb, 5);
+ time_code_minutes = get_bits(&s->gb, 6);
+ skip_bits1(&s->gb); // marker bit
+ time_code_seconds = get_bits(&s->gb, 6);
+ time_code_pictures = get_bits(&s->gb, 6);
+ s1->closed_gop = get_bits1(&s->gb);
/*broken_link indicate that after editing the
reference frames of the first B-Frames after GOP I-Frame
are missing (open gop)*/
broken_link = get_bits1(&s->gb);
- if(s->avctx->debug & FF_DEBUG_PICT_INFO)
- av_log(s->avctx, AV_LOG_DEBUG, "GOP (%2d:%02d:%02d.[%02d]) broken_link=%d\n",
- time_code_hours, time_code_minutes, time_code_seconds,
- time_code_pictures, broken_link);
+ if (s->avctx->debug & FF_DEBUG_PICT_INFO)
+ av_log(s->avctx, AV_LOG_DEBUG, "GOP (%2d:%02d:%02d.[%02d]) closed_gop=%d broken_link=%d\n",
+ time_code_hours, time_code_minutes, time_code_seconds,
+ time_code_pictures, s1->closed_gop, broken_link);
}
/**
- * finds the end of the current frame in the bitstream.
+ * Find the end of the current frame in the bitstream.
* @return the position of the first byte of the next frame, or -1
*/
-int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size)
+int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s)
{
int i;
- uint32_t state= pc->state;
+ uint32_t state = pc->state;
+
+ /* EOF considered as end of frame */
+ if (buf_size == 0)
+ return 0;
- i=0;
- if(!pc->frame_start_found){
- for(i=0; i<buf_size; i++){
- i= ff_find_start_code(buf+i, buf+buf_size, &state) - buf - 1;
- if(state >= SLICE_MIN_START_CODE && state <= SLICE_MAX_START_CODE){
+/*
+ 0 frame start -> 1/4
+ 1 first_SEQEXT -> 0/2
+ 2 first field start -> 3/0
+ 3 second_SEQEXT -> 2/0
+ 4 searching end
+*/
+
+ for (i = 0; i < buf_size; i++) {
+ assert(pc->frame_start_found >= 0 && pc->frame_start_found <= 4);
+ if (pc->frame_start_found & 1) {
+ if (state == EXT_START_CODE && (buf[i] & 0xF0) != 0x80)
+ pc->frame_start_found--;
+ else if (state == EXT_START_CODE + 2) {
+ if ((buf[i] & 3) == 3)
+ pc->frame_start_found = 0;
+ else
+ pc->frame_start_found = (pc->frame_start_found + 1) & 3;
+ }
+ state++;
+ } else {
+ i = avpriv_mpv_find_start_code(buf + i, buf + buf_size, &state) - buf - 1;
+ if (pc->frame_start_found == 0 && state >= SLICE_MIN_START_CODE && state <= SLICE_MAX_START_CODE) {
i++;
- pc->frame_start_found=1;
- break;
+ pc->frame_start_found = 4;
}
- }
- }
-
- if(pc->frame_start_found){
- /* EOF considered as end of frame */
- if (buf_size == 0)
- return 0;
- for(; i<buf_size; i++){
- i= ff_find_start_code(buf+i, buf+buf_size, &state) - buf - 1;
- if((state&0xFFFFFF00) == 0x100){
- if(state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE){
- pc->frame_start_found=0;
- pc->state=-1;
- return i-3;
+ if (state == SEQ_END_CODE) {
+ pc->state=-1;
+ return i+1;
+ }
+ if (pc->frame_start_found == 2 && state == SEQ_START_CODE)
+ pc->frame_start_found = 0;
+ if (pc->frame_start_found < 4 && state == EXT_START_CODE)
+ pc->frame_start_found++;
+ if (pc->frame_start_found == 4 && (state & 0xFFFFFF00) == 0x100) {
+ if (state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE) {
+ pc->frame_start_found = 0;
+ pc->state = -1;
+ return i - 3;
}
}
+ if (pc->frame_start_found == 0 && s && state == PICTURE_START_CODE) {
+ ff_fetch_timestamp(s, i - 3, 1);
+ }
}
}
- pc->state= state;
+ pc->state = state;
return END_NOT_FOUND;
}
+static int decode_chunks(AVCodecContext *avctx,
+ AVFrame *picture, int *data_size,
+ const uint8_t *buf, int buf_size);
+
/* handle buffering and image synchronisation */
static int mpeg_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
Mpeg1Context *s = avctx->priv_data;
- const uint8_t *buf_end;
- const uint8_t *buf_ptr;
- uint32_t start_code;
- int ret, input_size;
AVFrame *picture = data;
MpegEncContext *s2 = &s->mpeg_enc_ctx;
- dprintf("fill_buffer\n");
+ av_dlog(avctx, "fill_buffer\n");
- if (buf_size == 0) {
+ if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == SEQ_END_CODE)) {
/* special case for last picture */
- if (s2->low_delay==0 && s2->next_picture_ptr) {
- *picture= *(AVFrame*)s2->next_picture_ptr;
- s2->next_picture_ptr= NULL;
+ if (s2->low_delay == 0 && s2->next_picture_ptr) {
+ *picture = s2->next_picture_ptr->f;
+ s2->next_picture_ptr = NULL;
*data_size = sizeof(AVFrame);
}
- return 0;
+ return buf_size;
}
- if(s2->flags&CODEC_FLAG_TRUNCATED){
- int next= ff_mpeg1_find_frame_end(&s2->parse_context, buf, buf_size);
+ if (s2->flags & CODEC_FLAG_TRUNCATED) {
+ int next = ff_mpeg1_find_frame_end(&s2->parse_context, buf, buf_size, NULL);
- if( ff_combine_frame(&s2->parse_context, next, &buf, &buf_size) < 0 )
+ if (ff_combine_frame(&s2->parse_context, next, (const uint8_t **)&buf, &buf_size) < 0)
return buf_size;
}
- buf_ptr = buf;
- buf_end = buf + buf_size;
-
-#if 0
- if (s->repeat_field % 2 == 1) {
- s->repeat_field++;
- //fprintf(stderr,"\nRepeating last frame: %d -> %d! pict: %d %d", avctx->frame_number-1, avctx->frame_number,
- // s2->picture_number, s->repeat_field);
- if (avctx->flags & CODEC_FLAG_REPEAT_FIELD) {
- *data_size = sizeof(AVPicture);
- goto the_end;
- }
- }
-#endif
-
- if(s->mpeg_enc_ctx_allocated==0 && avctx->codec_tag == ff_get_fourcc("VCR2"))
+ if (s->mpeg_enc_ctx_allocated == 0 && avctx->codec_tag == AV_RL32("VCR2"))
vcr2_init_sequence(avctx);
- s->slice_count= 0;
+ s->slice_count = 0;
- for(;;) {
- /* find start next code */
- start_code = -1;
- buf_ptr = ff_find_start_code(buf_ptr,buf_end, &start_code);
- if (start_code > 0x1ff){
- if(s2->pict_type != B_TYPE || avctx->skip_frame <= AVDISCARD_DEFAULT){
- if(avctx->thread_count > 1){
+ if (avctx->extradata && !avctx->frame_number) {
+ int ret = decode_chunks(avctx, picture, data_size, avctx->extradata, avctx->extradata_size);
+ if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
+ return ret;
+ }
+
+ return decode_chunks(avctx, picture, data_size, buf, buf_size);
+}
+
+static int decode_chunks(AVCodecContext *avctx,
+ AVFrame *picture, int *data_size,
+ const uint8_t *buf, int buf_size)
+{
+ Mpeg1Context *s = avctx->priv_data;
+ MpegEncContext *s2 = &s->mpeg_enc_ctx;
+ const uint8_t *buf_ptr = buf;
+ const uint8_t *buf_end = buf + buf_size;
+ int ret, input_size;
+ int last_code = 0;
+
+ for (;;) {
+ /* find next start code */
+ uint32_t start_code = -1;
+ buf_ptr = avpriv_mpv_find_start_code(buf_ptr, buf_end, &start_code);
+ if (start_code > 0x1ff) {
+ if (s2->pict_type != AV_PICTURE_TYPE_B || avctx->skip_frame <= AVDISCARD_DEFAULT) {
+ if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE)) {
int i;
- avctx->execute(avctx, slice_decode_thread, (void**)&(s2->thread_context[0]), NULL, s->slice_count);
- for(i=0; i<s->slice_count; i++)
+ avctx->execute(avctx, slice_decode_thread, &s2->thread_context[0], NULL, s->slice_count, sizeof(void*));
+ for (i = 0; i < s->slice_count; i++)
s2->error_count += s2->thread_context[i]->error_count;
}
+
+ if (CONFIG_MPEG_VDPAU_DECODER && avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
+ ff_vdpau_mpeg_picture_complete(s2, buf, buf_size, s->slice_count);
+
if (slice_end(avctx, picture)) {
- if(s2->last_picture_ptr || s2->low_delay) //FIXME merge with the stuff in mpeg_decode_slice
+ if (s2->last_picture_ptr || s2->low_delay) //FIXME merge with the stuff in mpeg_decode_slice
*data_size = sizeof(AVPicture);
}
}
+ s2->pict_type = 0;
return FFMAX(0, buf_ptr - buf - s2->parse_context.last_index);
}
input_size = buf_end - buf_ptr;
- if(avctx->debug & FF_DEBUG_STARTCODE){
- av_log(avctx, AV_LOG_DEBUG, "%3X at %zd left %d\n", start_code, buf_ptr-buf, input_size);
+ if (avctx->debug & FF_DEBUG_STARTCODE) {
+ av_log(avctx, AV_LOG_DEBUG, "%3X at %td left %d\n", start_code, buf_ptr-buf, input_size);
}
- /* prepare data for next start code */
- switch(start_code) {
- case SEQ_START_CODE:
- mpeg1_decode_sequence(avctx, buf_ptr,
- input_size);
- break;
+ /* prepare data for next start code */
+ switch (start_code) {
+ case SEQ_START_CODE:
+ if (last_code == 0) {
+ mpeg1_decode_sequence(avctx, buf_ptr, input_size);
+ s->sync=1;
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "ignoring SEQ_START_CODE after %X\n", last_code);
+ if (avctx->err_recognition & AV_EF_EXPLODE)
+ return AVERROR_INVALIDDATA;
+ }
+ break;
- case PICTURE_START_CODE:
- /* we have a complete image : we try to decompress it */
- mpeg1_decode_picture(avctx,
- buf_ptr, input_size);
- break;
- case EXT_START_CODE:
- mpeg_decode_extension(avctx,
- buf_ptr, input_size);
- break;
- case USER_START_CODE:
- mpeg_decode_user_data(avctx,
- buf_ptr, input_size);
+ case PICTURE_START_CODE:
+ if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE) && s->slice_count) {
+ int i;
+
+ avctx->execute(avctx, slice_decode_thread,
+ s2->thread_context, NULL,
+ s->slice_count, sizeof(void*));
+ for (i = 0; i < s->slice_count; i++)
+ s2->error_count += s2->thread_context[i]->error_count;
+ s->slice_count = 0;
+ }
+ if (last_code == 0 || last_code == SLICE_MIN_START_CODE) {
+ ret = mpeg_decode_postinit(avctx);
+ if (ret < 0) {
+ av_log(avctx, AV_LOG_ERROR, "mpeg_decode_postinit() failure\n");
+ return ret;
+ }
+
+ /* we have a complete image: we try to decompress it */
+ if (mpeg1_decode_picture(avctx, buf_ptr, input_size) < 0)
+ s2->pict_type = 0;
+ s2->first_slice = 1;
+ last_code = PICTURE_START_CODE;
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "ignoring pic after %X\n", last_code);
+ if (avctx->err_recognition & AV_EF_EXPLODE)
+ return AVERROR_INVALIDDATA;
+ }
+ break;
+ case EXT_START_CODE:
+ init_get_bits(&s2->gb, buf_ptr, input_size*8);
+
+ switch (get_bits(&s2->gb, 4)) {
+ case 0x1:
+ if (last_code == 0) {
+ mpeg_decode_sequence_extension(s);
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "ignoring seq ext after %X\n", last_code);
+ if (avctx->err_recognition & AV_EF_EXPLODE)
+ return AVERROR_INVALIDDATA;
+ }
+ break;
+ case 0x2:
+ mpeg_decode_sequence_display_extension(s);
+ break;
+ case 0x3:
+ mpeg_decode_quant_matrix_extension(s2);
+ break;
+ case 0x7:
+ mpeg_decode_picture_display_extension(s);
+ break;
+ case 0x8:
+ if (last_code == PICTURE_START_CODE) {
+ mpeg_decode_picture_coding_extension(s);
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "ignoring pic cod ext after %X\n", last_code);
+ if (avctx->err_recognition & AV_EF_EXPLODE)
+ return AVERROR_INVALIDDATA;
+ }
+ break;
+ }
+ break;
+ case USER_START_CODE:
+ mpeg_decode_user_data(avctx, buf_ptr, input_size);
+ break;
+ case GOP_START_CODE:
+ if (last_code == 0) {
+ s2->first_field=0;
+ mpeg_decode_gop(avctx, buf_ptr, input_size);
+ s->sync=1;
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "ignoring GOP_START_CODE after %X\n", last_code);
+ if (avctx->err_recognition & AV_EF_EXPLODE)
+ return AVERROR_INVALIDDATA;
+ }
+ break;
+ default:
+ if (start_code >= SLICE_MIN_START_CODE &&
+ start_code <= SLICE_MAX_START_CODE && last_code != 0) {
+ const int field_pic = s2->picture_structure != PICT_FRAME;
+ int mb_y = (start_code - SLICE_MIN_START_CODE) << field_pic;
+ last_code = SLICE_MIN_START_CODE;
+
+ if (s2->picture_structure == PICT_BOTTOM_FIELD)
+ mb_y++;
+
+ if (mb_y >= s2->mb_height) {
+ av_log(s2->avctx, AV_LOG_ERROR, "slice below image (%d >= %d)\n", mb_y, s2->mb_height);
+ return -1;
+ }
+
+ if (s2->last_picture_ptr == NULL) {
+ /* Skip B-frames if we do not have reference frames and gop is not closed */
+ if (s2->pict_type == AV_PICTURE_TYPE_B) {
+ if (!s->closed_gop)
+ break;
+ }
+ }
+ if (s2->pict_type == AV_PICTURE_TYPE_I)
+ s->sync=1;
+ if (s2->next_picture_ptr == NULL) {
+ /* Skip P-frames if we do not have a reference frame or we have an invalid header. */
+ if (s2->pict_type == AV_PICTURE_TYPE_P && !s->sync) break;
+ }
+ if ((avctx->skip_frame >= AVDISCARD_NONREF && s2->pict_type == AV_PICTURE_TYPE_B) ||
+ (avctx->skip_frame >= AVDISCARD_NONKEY && s2->pict_type != AV_PICTURE_TYPE_I) ||
+ avctx->skip_frame >= AVDISCARD_ALL)
break;
- case GOP_START_CODE:
- s2->first_field=0;
- mpeg_decode_gop(avctx,
- buf_ptr, input_size);
+
+ if (!s->mpeg_enc_ctx_allocated)
break;
- default:
- if (start_code >= SLICE_MIN_START_CODE &&
- start_code <= SLICE_MAX_START_CODE) {
- int mb_y= start_code - SLICE_MIN_START_CODE;
-
- if(s2->last_picture_ptr==NULL){
- /* skip b frames if we dont have reference frames */
- if(s2->pict_type==B_TYPE) break;
- /* skip P frames if we dont have reference frame no valid header */
-// if(s2->pict_type==P_TYPE && s2->first_field && !s2->first_slice) break;
- }
- /* skip b frames if we are in a hurry */
- if(avctx->hurry_up && s2->pict_type==B_TYPE) break;
- if( (avctx->skip_frame >= AVDISCARD_NONREF && s2->pict_type==B_TYPE)
- ||(avctx->skip_frame >= AVDISCARD_NONKEY && s2->pict_type!=I_TYPE)
- || avctx->skip_frame >= AVDISCARD_ALL)
- break;
- /* skip everything if we are in a hurry>=5 */
- if(avctx->hurry_up>=5) break;
- if (!s->mpeg_enc_ctx_allocated) break;
+ if (s2->codec_id == CODEC_ID_MPEG2VIDEO) {
+ if (mb_y < avctx->skip_top || mb_y >= s2->mb_height - avctx->skip_bottom)
+ break;
+ }
- if(s2->codec_id == CODEC_ID_MPEG2VIDEO){
- if(mb_y < avctx->skip_top || mb_y >= s2->mb_height - avctx->skip_bottom)
- break;
- }
+ if (!s2->pict_type) {
+ av_log(avctx, AV_LOG_ERROR, "Missing picture start code\n");
+ if (avctx->err_recognition & AV_EF_EXPLODE)
+ return AVERROR_INVALIDDATA;
+ break;
+ }
- if(s2->first_slice){
- s2->first_slice=0;
- if(mpeg_field_start(s2) < 0)
- return -1;
- }
+ if (s2->first_slice) {
+ s2->first_slice = 0;
+ if (mpeg_field_start(s2, buf, buf_size) < 0)
+ return -1;
+ }
+ if (!s2->current_picture_ptr) {
+ av_log(avctx, AV_LOG_ERROR, "current_picture not initialized\n");
+ return AVERROR_INVALIDDATA;
+ }
- if(avctx->thread_count > 1){
- int threshold= (s2->mb_height*s->slice_count + avctx->thread_count/2) / avctx->thread_count;
- if(threshold <= mb_y){
- MpegEncContext *thread_context= s2->thread_context[s->slice_count];
+ if (avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) {
+ s->slice_count++;
+ break;
+ }
- thread_context->start_mb_y= mb_y;
- thread_context->end_mb_y = s2->mb_height;
- if(s->slice_count){
- s2->thread_context[s->slice_count-1]->end_mb_y= mb_y;
- ff_update_duplicate_context(thread_context, s2);
- }
- init_get_bits(&thread_context->gb, buf_ptr, input_size*8);
- s->slice_count++;
- }
- buf_ptr += 2; //FIXME add minimum num of bytes per slice
- }else{
- ret = mpeg_decode_slice(s, mb_y, &buf_ptr, input_size);
- emms_c();
-
- if(ret < 0){
- if(s2->resync_mb_x>=0 && s2->resync_mb_y>=0)
- ff_er_add_slice(s2, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x, s2->mb_y, AC_ERROR|DC_ERROR|MV_ERROR);
- }else{
- ff_er_add_slice(s2, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x-1, s2->mb_y, AC_END|DC_END|MV_END);
- }
+ if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE)) {
+ int threshold = (s2->mb_height * s->slice_count +
+ s2->slice_context_count / 2) /
+ s2->slice_context_count;
+ if (threshold <= mb_y) {
+ MpegEncContext *thread_context = s2->thread_context[s->slice_count];
+
+ thread_context->start_mb_y = mb_y;
+ thread_context->end_mb_y = s2->mb_height;
+ if (s->slice_count) {
+ s2->thread_context[s->slice_count-1]->end_mb_y = mb_y;
+ ff_update_duplicate_context(thread_context, s2);
}
+ init_get_bits(&thread_context->gb, buf_ptr, input_size*8);
+ s->slice_count++;
+ }
+ buf_ptr += 2; // FIXME add minimum number of bytes per slice
+ } else {
+ ret = mpeg_decode_slice(s2, mb_y, &buf_ptr, input_size);
+ emms_c();
+
+ if (ret < 0) {
+ if (avctx->err_recognition & AV_EF_EXPLODE)
+ return ret;
+ if (s2->resync_mb_x >= 0 && s2->resync_mb_y >= 0)
+ ff_er_add_slice(s2, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x, s2->mb_y, ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR);
+ } else {
+ ff_er_add_slice(s2, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x-1, s2->mb_y, ER_AC_END | ER_DC_END | ER_MV_END);
}
- break;
}
+ }
+ break;
+ }
}
}
+static void flush(AVCodecContext *avctx)
+{
+ Mpeg1Context *s = avctx->priv_data;
+
+ s->sync=0;
+ s->closed_gop = 0;
+
+ ff_mpeg_flush(avctx);
+}
+
static int mpeg_decode_end(AVCodecContext *avctx)
{
Mpeg1Context *s = avctx->priv_data;
if (s->mpeg_enc_ctx_allocated)
- MPV_common_end(&s->mpeg_enc_ctx);
+ ff_MPV_common_end(&s->mpeg_enc_ctx);
return 0;
}
-AVCodec mpeg1video_decoder = {
- "mpeg1video",
- CODEC_TYPE_VIDEO,
- CODEC_ID_MPEG1VIDEO,
- sizeof(Mpeg1Context),
- mpeg_decode_init,
- NULL,
- mpeg_decode_end,
- mpeg_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
- .flush= ff_mpeg_flush,
-};
-
-AVCodec mpeg2video_decoder = {
- "mpeg2video",
- CODEC_TYPE_VIDEO,
- CODEC_ID_MPEG2VIDEO,
- sizeof(Mpeg1Context),
- mpeg_decode_init,
- NULL,
- mpeg_decode_end,
- mpeg_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
- .flush= ff_mpeg_flush,
+static const AVProfile mpeg2_video_profiles[] = {
+ { FF_PROFILE_MPEG2_422, "4:2:2" },
+ { FF_PROFILE_MPEG2_HIGH, "High" },
+ { FF_PROFILE_MPEG2_SS, "Spatially Scalable" },
+ { FF_PROFILE_MPEG2_SNR_SCALABLE, "SNR Scalable" },
+ { FF_PROFILE_MPEG2_MAIN, "Main" },
+ { FF_PROFILE_MPEG2_SIMPLE, "Simple" },
+ { FF_PROFILE_RESERVED, "Reserved" },
+ { FF_PROFILE_RESERVED, "Reserved" },
+ { FF_PROFILE_UNKNOWN },
};
-//legacy decoder
-AVCodec mpegvideo_decoder = {
- "mpegvideo",
- CODEC_TYPE_VIDEO,
- CODEC_ID_MPEG2VIDEO,
- sizeof(Mpeg1Context),
- mpeg_decode_init,
- NULL,
- mpeg_decode_end,
- mpeg_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
- .flush= ff_mpeg_flush,
-};
-#ifdef CONFIG_ENCODERS
-
-AVCodec mpeg1video_encoder = {
- "mpeg1video",
- CODEC_TYPE_VIDEO,
- CODEC_ID_MPEG1VIDEO,
- sizeof(MpegEncContext),
- encode_init,
- MPV_encode_picture,
- MPV_encode_end,
- .supported_framerates= ff_frame_rate_tab+1,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
- .capabilities= CODEC_CAP_DELAY,
+AVCodec ff_mpeg1video_decoder = {
+ .name = "mpeg1video",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_MPEG1VIDEO,
+ .priv_data_size = sizeof(Mpeg1Context),
+ .init = mpeg_decode_init,
+ .close = mpeg_decode_end,
+ .decode = mpeg_decode_frame,
+ .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 |
+ CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY |
+ CODEC_CAP_SLICE_THREADS,
+ .flush = flush,
+ .max_lowres = 3,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
+ .update_thread_context = ONLY_IF_THREADS_ENABLED(mpeg_decode_update_thread_context)
};
-AVCodec mpeg2video_encoder = {
- "mpeg2video",
- CODEC_TYPE_VIDEO,
- CODEC_ID_MPEG2VIDEO,
- sizeof(MpegEncContext),
- encode_init,
- MPV_encode_picture,
- MPV_encode_end,
- .supported_framerates= ff_frame_rate_tab+1,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, -1},
- .capabilities= CODEC_CAP_DELAY,
+AVCodec ff_mpeg2video_decoder = {
+ .name = "mpeg2video",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_MPEG2VIDEO,
+ .priv_data_size = sizeof(Mpeg1Context),
+ .init = mpeg_decode_init,
+ .close = mpeg_decode_end,
+ .decode = mpeg_decode_frame,
+ .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 |
+ CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY |
+ CODEC_CAP_SLICE_THREADS,
+ .flush = flush,
+ .max_lowres = 3,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
+ .profiles = NULL_IF_CONFIG_SMALL(mpeg2_video_profiles),
};
-#endif
-
-#ifdef HAVE_XVMC
-static int mpeg_mc_decode_init(AVCodecContext *avctx){
- Mpeg1Context *s;
- if( avctx->thread_count > 1)
+#if CONFIG_MPEG_XVMC_DECODER
+static av_cold int mpeg_mc_decode_init(AVCodecContext *avctx)
+{
+ if (avctx->active_thread_type & FF_THREAD_SLICE)
return -1;
- if( !(avctx->slice_flags & SLICE_FLAG_CODED_ORDER) )
+ if (!(avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
return -1;
- if( !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD) ){
- dprintf("mpeg12.c: XvMC decoder will work better if SLICE_FLAG_ALLOW_FIELD is set\n");
+ if (!(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) {
+ av_dlog(avctx, "mpeg12.c: XvMC decoder will work better if SLICE_FLAG_ALLOW_FIELD is set\n");
}
mpeg_decode_init(avctx);
- s = avctx->priv_data;
- avctx->pix_fmt = PIX_FMT_XVMC_MPEG2_IDCT;
- avctx->xvmc_acceleration = 2;//2 - the blocks are packed!
+ avctx->pix_fmt = PIX_FMT_XVMC_MPEG2_IDCT;
+ avctx->xvmc_acceleration = 2; // 2 - the blocks are packed!
return 0;
}
-AVCodec mpeg_xvmc_decoder = {
- "mpegvideo_xvmc",
- CODEC_TYPE_VIDEO,
- CODEC_ID_MPEG2VIDEO_XVMC,
- sizeof(Mpeg1Context),
- mpeg_mc_decode_init,
- NULL,
- mpeg_decode_end,
- mpeg_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED| CODEC_CAP_HWACCEL | CODEC_CAP_DELAY,
- .flush= ff_mpeg_flush,
+AVCodec ff_mpeg_xvmc_decoder = {
+ .name = "mpegvideo_xvmc",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_MPEG2VIDEO_XVMC,
+ .priv_data_size = sizeof(Mpeg1Context),
+ .init = mpeg_mc_decode_init,
+ .close = mpeg_decode_end,
+ .decode = mpeg_decode_frame,
+ .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 |
+ CODEC_CAP_TRUNCATED| CODEC_CAP_HWACCEL | CODEC_CAP_DELAY,
+ .flush = flush,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video XvMC (X-Video Motion Compensation)"),
};
#endif
-/* this is ugly i know, but the alternative is too make
- hundreds of vars global and prefix them with ff_mpeg1_
- which is far uglier. */
-#include "mdec.c"
+#if CONFIG_MPEG_VDPAU_DECODER
+AVCodec ff_mpeg_vdpau_decoder = {
+ .name = "mpegvideo_vdpau",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_MPEG2VIDEO,
+ .priv_data_size = sizeof(Mpeg1Context),
+ .init = mpeg_decode_init,
+ .close = mpeg_decode_end,
+ .decode = mpeg_decode_frame,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED |
+ CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY,
+ .flush = flush,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video (VDPAU acceleration)"),
+};
+#endif
+
+#if CONFIG_MPEG1_VDPAU_DECODER
+AVCodec ff_mpeg1_vdpau_decoder = {
+ .name = "mpeg1video_vdpau",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_MPEG1VIDEO,
+ .priv_data_size = sizeof(Mpeg1Context),
+ .init = mpeg_decode_init,
+ .close = mpeg_decode_end,
+ .decode = mpeg_decode_frame,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED |
+ CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY,
+ .flush = flush,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video (VDPAU acceleration)"),
+};
+#endif
projects / ffmpeg / blobdiff