/*
* MPEG1 codec / MPEG2 decoder
* Copyright (c) 2000,2001 Fabrice Bellard.
- * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; 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
*/
-
+
//#define DEBUG
#include "avcodec.h"
#include "dsputil.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 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 TEX_VLC_BITS 9
#ifdef CONFIG_ENCODERS
-static void mpeg1_encode_block(MpegEncContext *s,
- DCTELEM *block,
+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,
+static inline int mpeg1_decode_block_inter(MpegEncContext *s,
+ DCTELEM *block,
int n);
-static inline int mpeg1_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
+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,
+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,
+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);
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[] = {
+static const enum PixelFormat pixfmt_yuv_420[]= {PIX_FMT_YUV420P,-1};
+static const enum PixelFormat pixfmt_yuv_422[]= {PIX_FMT_YUV422P,-1};
+static const enum PixelFormat pixfmt_yuv_444[]= {PIX_FMT_YUV444P,-1};
+static const enum PixelFormat pixfmt_xvmc_mpg2_420[] = {
PIX_FMT_XVMC_MPEG2_IDCT,
PIX_FMT_XVMC_MPEG2_MC,
- -1};
+ -1};
#ifdef CONFIG_ENCODERS
static uint8_t (*mv_penalty)[MAX_MV*2+1]= NULL;
static uint8_t fcode_tab[MAX_MV*2+1];
-static uint32_t uni_mpeg1_ac_vlc_bits[64*64*2];
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 void init_2d_vlc_rl(RLTable *rl, int use_static)
{
int i;
-
- init_vlc(&rl->vlc, TEX_VLC_BITS, rl->n + 2,
+
+ 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)
+ 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));
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;
}
#ifdef CONFIG_ENCODERS
-static void init_uni_ac_vlc(RLTable *rl, uint32_t *uni_ac_vlc_bits, uint8_t *uni_ac_vlc_len){
+static void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len){
int i;
for(i=0; i<128; i++){
int run;
for(run=0; run<64; run++){
int len, bits, code;
-
- int alevel= ABS(level);
+
+ int alevel= FFABS(level);
int sign= (level>>31)&1;
if (alevel > rl->max_level[0][run])
code= rl->index_run[0][run] + alevel - 1;
if (code < 111 /* rl->n */) {
- /* store the vlc & sign at once */
- len= mpeg1_vlc[code][1]+1;
- bits= (mpeg1_vlc[code][0]<<1) + sign;
+ /* store the vlc & sign at once */
+ len= rl->table_vlc[code][1]+1;
+ bits= (rl->table_vlc[code][0]<<1) + sign;
} else {
- len= mpeg1_vlc[111/*rl->n*/][1]+6;
- bits= mpeg1_vlc[111/*rl->n*/][0]<<6;
+ len= rl->table_vlc[111/*rl->n*/][1]+6;
+ bits= rl->table_vlc[111/*rl->n*/][0]<<6;
bits|= run;
if (alevel < 128) {
}
}
- uni_ac_vlc_bits[UNI_AC_ENC_INDEX(run, i)]= bits;
uni_ac_vlc_len [UNI_AC_ENC_INDEX(run, i)]= len;
}
}
int64_t d;
for(i=1;i<14;i++) {
- int64_t n0= 1001LL/frame_rate_tab[i].den*frame_rate_tab[i].num*s->avctx->time_base.num;
+ 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 = ABS(n0 - n1);
+ d = FFABS(n0 - n1);
if(d < dmin){
dmin=d;
s->frame_rate_index= i;
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);
}
}
-
+
+ if(avctx->profile == FF_PROFILE_UNKNOWN)
+ avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0;
+
+ if(avctx->level == FF_LEVEL_UNKNOWN)
+ avctx->level = s->chroma_format == CHROMA_420 ? 8 : 5;
+
+ if((avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) && s->frame_rate_index != 4){
+ av_log(avctx, AV_LOG_ERROR, "Drop frame time code only allowed with 1001/30000 fps\n");
+ return -1;
+ }
+
return 0;
}
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= frame_rate_tab[s->frame_rate_index];
+ 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);
-
+
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;
-
- error= ABS(error);
-
+
+ error= FFABS(error);
+
if(error < best_aspect_error){
best_aspect_error= error;
s->aspect_ratio_info= i;
}
}
-
+
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)
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 &&
+ 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 &&
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, 0); //esc
-
- if(s->avctx->profile == FF_PROFILE_UNKNOWN){
- put_bits(&s->pb, 3, 4); //profile
- }else{
- put_bits(&s->pb, 3, s->avctx->profile); //profile
- }
- if(s->avctx->level == FF_LEVEL_UNKNOWN){
- put_bits(&s->pb, 4, 8); //level
- }else{
- put_bits(&s->pb, 4, s->avctx->level); //level
- }
+ 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, 1); //chroma format 4:2:0
+ 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, 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 */
+ put_bits(&s->pb, 1, !!(s->avctx->flags & CODEC_FLAG2_DROP_FRAME_TIMECODE)); /* drop frame flag */
/* 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;
+ time_code = s->current_picture_ptr->coded_picture_number + s->avctx->timecode_frame_start;
+
+ s->gop_picture_number = s->current_picture_ptr->coded_picture_number;
+ if (s->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) {
+ /* only works for NTSC 29.97 */
+ int d = time_code / 17982;
+ int m = time_code % 17982;
+ //if (m < 2) m += 2; /* not needed since -2,-1 / 1798 in C returns 0 */
+ time_code += 18 * d + 2 * ((m - 2) / 1798);
+ }
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, 11, 0x008);
run -= 33;
}
- put_bits(&s->pb, mbAddrIncrTable[run][1],
+ put_bits(&s->pb, mbAddrIncrTable[run][1],
mbAddrIncrTable[run][0]);
}
#endif //CONFIG_ENCODERS
/* 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, 10, (s->picture_number -
+ s->gop_picture_number) & 0x3ff);
put_bits(&s->pb, 3, s->pict_type);
s->vbv_delay_ptr= s->pb.buf + put_bits_count(&s->pb)/8;
put_bits(&s->pb, 16, 0xFFFF); /* vbv_delay */
-
+
// 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 */
else
put_bits(&s->pb, 3, 7); /* forward_f_code */
}
-
+
// RAL: Backward f_code necessary for B frames
if (s->pict_type == B_TYPE) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
put_bits(&s->pb, 8, 255);
}
put_bits(&s->pb, 2, s->intra_dc_precision);
-
+
assert(s->picture_structure == PICT_FRAME);
put_bits(&s->pb, 2, s->picture_structure);
if (s->progressive_sequence) {
/* 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->alternate_scan);
put_bits(&s->pb, 1, s->repeat_first_field);
s->progressive_frame = s->progressive_sequence;
- put_bits(&s->pb, 1, s->chroma_420_type=s->progressive_frame);
+ 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
}
put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
}
}
-
+
s->mb_y=0;
ff_mpeg1_encode_slice_header(s);
}
-static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
+static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
int has_mv, int field_motion)
{
put_bits(&s->pb, n, bits);
if (!s->frame_pred_frame_dct) {
- if (has_mv)
+ if (has_mv)
put_bits(&s->pb, 2, 2 - field_motion); /* motion_type: frame/field */
put_bits(&s->pb, 1, s->interlaced_dct);
}
}
-void mpeg1_encode_mb(MpegEncContext *s,
- DCTELEM block[6][64],
- int motion_x, int motion_y)
+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;
/* compute cbp */
cbp = 0;
- for(i=0;i<6;i++) {
+ for(i=0;i<mb_block_count;i++) {
if (s->block_last_index[i] >= 0)
- cbp |= 1 << (5 - i);
+ cbp |= 1 << (mb_block_count - 1 - i);
}
-
+
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)) &&
+ (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->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][0]= s->last_mv[0][0][0]=
s->last_mv[0][1][1]= s->last_mv[0][0][1]= 0;
}
} else {
}else{
encode_mb_skip_run(s, s->mb_skip_run);
}
-
+
if (s->pict_type == I_TYPE) {
if(s->dquant && cbp){
put_mb_modes(s, 2, 1, 0, 0); /* macroblock_type : macroblock_quant = 1 */
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) {
+ } else if (s->pict_type == P_TYPE) {
if(s->mv_type == MV_TYPE_16X16){
if (cbp != 0) {
if ((motion_x|motion_y) == 0) {
}
s->mv_bits+= get_bits_diff(s);
}
- if(cbp)
- put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
+ 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{
+ } else{
static const int mb_type_len[4]={0,3,4,2}; //bak,for,bi
if(s->mv_type == MV_TYPE_16X16){
}
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);
+ 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);
+ 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++;
}
}
s->mv_bits += get_bits_diff(s);
- if(cbp)
- put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
+ 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<6;i++) {
- if (cbp & (1 << (5 - i))) {
+ for(i=0;i<mb_block_count;i++) {
+ if (cbp & (1 << (mb_block_count - 1 - i))) {
mpeg1_encode_block(s, block[i], i);
}
}
}
}
+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)
{
/* zero vector */
code = 0;
put_bits(&s->pb,
- mbMotionVectorTable[0][1],
- mbMotionVectorTable[0][0]);
+ mbMotionVectorTable[0][1],
+ mbMotionVectorTable[0][0]);
} else {
bit_size = f_or_b_code - 1;
range = 1 << bit_size;
assert(code > 0 && code <= 16);
put_bits(&s->pb,
- mbMotionVectorTable[code][1],
- mbMotionVectorTable[code][0]);
+ mbMotionVectorTable[code][1],
+ mbMotionVectorTable[code][0]);
put_bits(&s->pb, 1, sign);
if (bit_size > 0) {
if(!done){
int f_code;
int mv;
- int i;
+ 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;
- 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_bits, uni_mpeg1_ac_vlc_len);
-
- /* build unified dc encoding tables */
- for(i=-255; i<256; i++)
- {
- int adiff, index;
- int bits, code;
- int diff=i;
-
- adiff = ABS(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);
- }
+ 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) );
range = 1 << bit_size;
val=mv;
- if (val < 0)
+ if (val < 0)
val = -val;
val--;
code = (val >> bit_size) + 1;
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++){
s->min_qcoeff=-2047;
s->max_qcoeff= 2047;
}
- s->intra_ac_vlc_length=
+ 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->intra_ac_vlc_last_length=
s->inter_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
}
}
if (component == 0) {
put_bits(
- &s->pb,
+ &s->pb,
vlc_dc_lum_bits[index] + index,
(vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1)));
}else{
put_bits(
- &s->pb,
+ &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);
+ &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);
+ &s->pb,
+ mpeg1_chr_dc_uni[diff+255]&0xFF,
+ mpeg1_chr_dc_uni[diff+255]>>8);
}
}
}
-static void mpeg1_encode_block(MpegEncContext *s,
- DCTELEM *block,
+static void mpeg1_encode_block(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
int code, component;
-// RLTable *rl = &rl_mpeg1;
+ 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 - 4 + 1);
+ 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)
- rl = &rl_mpeg2;
- else
- rl = &rl_mpeg1;
-*/
+ table_vlc = rl_mpeg2.table_vlc;
} else {
/* encode the first coefficient : needs to be done here because
it is handled slightly differently */
#if 0
if (level != 0)
dprintf("level[%d]=%d\n", i, level);
-#endif
+#endif
/* encode using VLC */
if (level != 0) {
run = i - last_non_zero - 1;
-
+
alevel= level;
MASK_ABS(sign, alevel)
sign&=1;
-// code = get_rl_index(rl, 0, run, alevel);
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, mpeg1_vlc[code][1]+1, (mpeg1_vlc[code][0]<<1) + sign);
+ /* 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, mpeg1_vlc[111/*rl->n*/][1], mpeg1_vlc[111/*rl->n*/][0]);
+ /* 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){
}
}
/* end of block */
- put_bits(&s->pb, 2, 0x2);
+ put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
}
#endif //CONFIG_ENCODERS
if (!done) {
done = 1;
- init_vlc(&dc_lum_vlc, DC_VLC_BITS, 12,
+ 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,
+ 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,
+ 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,
+ 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,
+
+ 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,
+ 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);
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;
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->current_picture.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];
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,
+ 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))
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.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));
- 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;
}
// motion_type = 0; /* avoid warning */
if (IS_INTRA(mb_type)) {
s->dsp.clear_blocks(s->block[0]);
-
+
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?
!s->frame_pred_frame_dct) {
if (IS_QUANT(mb_type))
s->qscale = get_qscale(s);
-
+
if (s->concealment_motion_vectors) {
/* just parse them */
- if (s->picture_structure != PICT_FRAME)
+ if (s->picture_structure != PICT_FRAME)
skip_bits1(&s->gb); /* field select */
-
- s->mv[0][0][0]= s->last_mv[0][0][0]= s->last_mv[0][1][0] =
+
+ s->mv[0][0][0]= s->last_mv[0][0][0]= s->last_mv[0][1][0] =
mpeg_decode_motion(s, s->mpeg_f_code[0][0], s->last_mv[0][0][0]);
- s->mv[0][0][1]= s->last_mv[0][0][1]= s->last_mv[0][1][1] =
+ s->mv[0][0][1]= s->last_mv[0][0][1]= s->last_mv[0][1][1] =
mpeg_decode_motion(s, s->mpeg_f_code[0][1], s->last_mv[0][0][1]);
skip_bits1(&s->gb); /* marker */
assert(mb_type & MB_TYPE_L0L1);
//FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED
/* get additionnal motion vector type */
- if (s->frame_pred_frame_dct)
+ if (s->frame_pred_frame_dct)
motion_type = MT_FRAME;
else{
motion_type = get_bits(&s->gb, 2);
case MT_FRAME: /* or MT_16X8 */
if (s->picture_structure == PICT_FRAME) {
/* MT_FRAME */
- mb_type |= MB_TYPE_16x16;
+ 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] =
+ 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] =
+ 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]){
}
} else {
/* MT_16X8 */
- mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+ mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
s->mv_type = MV_TYPE_16X8;
for(j=0;j<2;j++) {
s->field_select[i][j] = get_bits1(&s->gb);
case MT_FIELD:
s->mv_type = MV_TYPE_FIELD;
if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+ mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
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],
dprintf("fmy=%d\n", val);
}
} else {
- mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
s->field_select[i][0] = get_bits1(&s->gb);
for(k=0;k<2;k++) {
val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],
{
int dmx, dmy, mx, my, m;
- mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
+ 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],
+ 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->mv[i][1][1] = my;//not used
if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
//m = 1 + 2 * s->top_field_first;
m = s->top_field_first ? 1 : 3;
s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy;
if(s->picture_structure == PICT_TOP_FIELD)
s->mv[i][2][1]--;
- else
+ else
s->mv[i][2][1]++;
}
}
}
}
}
-
+
s->mb_intra = 0;
if (HAS_CBP(mb_type)) {
s->dsp.clear_blocks(s->block[0]);
-
+
if(!s->chroma_y_shift){
s->dsp.clear_blocks(s->block[6]);
}
return -1;
}
if(mb_block_count > 6){
- cbp<<= mb_block_count-6;
- cbp |= get_bits(&s->gb, mb_block_count-6);
+ cbp<<= mb_block_count-6;
+ cbp |= get_bits(&s->gb, mb_block_count-6);
}
#ifdef HAVE_XVMC
if(s->swap_uv){
exchange_uv(s);
}
- }
+ }
#endif
if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
}
}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)
}
}
}else{
- for(i=0;i<6;i++)
+ for(i=0;i<12;i++)
s->block_last_index[i] = -1;
}
}
if (sign)
val = -val;
val += pred;
-
+
/* modulo decoding */
l= INT_BIT - 5 - shift;
val = (val<<l)>>l;
return diff;
}
-static inline int mpeg1_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg1_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, dc, diff, i, j, run;
dprintf("dc=%d diff=%d\n", dc, diff);
i = 0;
{
- OPEN_READER(re, &s->gb);
+ 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) {
return 0;
}
-static inline int mpeg1_decode_block_inter(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg1_decode_block_inter(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, i, j, run;
/* 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];
/* 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];
}
-static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, i, j, run;
/* 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];
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;
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
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,
+static inline int mpeg2_fast_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 int qscale= s->qscale;
- int v;
OPEN_READER(re, &s->gb);
i = -1;
/* 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;
}
}
-
+
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);
+ 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_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg2_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, dc, diff, i, j, run;
/* DC coef */
if (n < 4){
quant_matrix = s->intra_matrix;
- component = 0;
+ component = 0;
}else{
quant_matrix = s->chroma_intra_matrix;
component = (n&1) + 1;
rl = &rl_mpeg1;
{
- OPEN_READER(re, &s->gb);
+ 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) {
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;
return 0;
}
-static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, dc, diff, j, run;
/* DC coef */
if (n < 4){
quant_matrix = s->intra_matrix;
- component = 0;
+ component = 0;
}else{
quant_matrix = s->chroma_intra_matrix;
component = (n&1) + 1;
rl = &rl_mpeg1;
{
- OPEN_READER(re, &s->gb);
+ 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) {
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;
}
Mpeg1Context *s = avctx->priv_data;
MpegEncContext *s2 = &s->mpeg_enc_ctx;
int i;
-
+
//we need some parmutation to store
//matrixes, until MPV_common_init()
- //set the real permutatuon
+ //set the real permutatuon
for(i=0;i<64;i++)
s2->dsp.idct_permutation[i]=i;
MPV_decode_defaults(s2);
-
+
s->mpeg_enc_ctx.avctx= avctx;
s->mpeg_enc_ctx.flags= avctx->flags;
s->mpeg_enc_ctx.flags2= avctx->flags2;
return 0;
}
-static void quant_matrix_rebuild(uint16_t *matrix, const uint8_t *old_perm,
+static void quant_matrix_rebuild(uint16_t *matrix, const uint8_t *old_perm,
const uint8_t *new_perm){
uint16_t temp_matrix[64];
int i;
memcpy(temp_matrix,matrix,64*sizeof(uint16_t));
-
+
for(i=0;i<64;i++){
matrix[new_perm[i]] = temp_matrix[old_perm[i]];
- }
+ }
}
//Call this function when we know all parameters
uint8_t old_permutation[64];
if (
- (s1->mpeg_enc_ctx_allocated == 0)||
+ (s1->mpeg_enc_ctx_allocated == 0)||
avctx->coded_width != s->width ||
avctx->coded_height != s->height||
s1->save_aspect_info != s->aspect_ratio_info||
0)
{
-
+
if (s1->mpeg_enc_ctx_allocated) {
ParseContext pc= s->parse_context;
s->parse_context.buffer=0;
s->parse_context= pc;
}
- if( (s->width == 0 )||(s->height == 0))
- return -2;
+ if( (s->width == 0 )||(s->height == 0))
+ return -2;
avcodec_set_dimensions(avctx, s->width, s->height);
avctx->bit_rate = s->bit_rate;
if(avctx->sub_id==1){//s->codec_id==avctx->codec_id==CODEC_ID
//mpeg1 fps
- avctx->time_base.den = frame_rate_tab[s->frame_rate_index].num;
- avctx->time_base.num= frame_rate_tab[s->frame_rate_index].den;
+ 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,
- frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num,
- frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den,
+ &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=
+ s->avctx->sample_aspect_ratio=
av_div_q(
- mpeg2_aspect[s->aspect_ratio_info],
+ mpeg2_aspect[s->aspect_ratio_info],
(AVRational){s->width, s->height}
);
}else{
- s->avctx->sample_aspect_ratio=
+ s->avctx->sample_aspect_ratio=
av_div_q(
- mpeg2_aspect[s->aspect_ratio_info],
+ mpeg2_aspect[s->aspect_ratio_info],
(AVRational){s1->pan_scan.width, s1->pan_scan.height}
);
- }
+ }
}else{
- s->avctx->sample_aspect_ratio=
+ s->avctx->sample_aspect_ratio=
mpeg2_aspect[s->aspect_ratio_info];
}
}//mpeg2
if( avctx->idct_algo == FF_IDCT_AUTO )
avctx->idct_algo = FF_IDCT_SIMPLE;
- //quantization matrixes may need reordering
+ //quantization matrixes may need reordering
//if dct permutation is changed
memcpy(old_permutation,s->dsp.idct_permutation,64*sizeof(uint8_t));
return 0;
}
-/* return the 8 bit start code value and update the search
- state. Return -1 if no start code found */
-static int find_start_code(const uint8_t **pbuf_ptr, const uint8_t *buf_end)
-{
- const uint8_t *buf_ptr= *pbuf_ptr;
-
- buf_ptr++; //gurantees that -1 is within the array
- buf_end -= 2; // gurantees that +2 is within the array
-
- while (buf_ptr < buf_end) {
- if(*buf_ptr==0){
- while(buf_ptr < buf_end && buf_ptr[1]==0)
- buf_ptr++;
-
- if(buf_ptr[-1] == 0 && buf_ptr[1] == 1){
- *pbuf_ptr = buf_ptr+3;
- return buf_ptr[2] + 0x100;
- }
- }
- buf_ptr += 2;
- }
- buf_end += 2; //undo the hack above
-
- *pbuf_ptr = buf_end;
- return -1;
-}
-
-static int mpeg1_decode_picture(AVCodecContext *avctx,
+static int mpeg1_decode_picture(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
int ref, f_code, vbv_delay;
- if(mpeg_decode_postinit(s->avctx) < 0)
+ if(mpeg_decode_postinit(s->avctx) < 0)
return -2;
init_get_bits(&s->gb, buf, buf_size*8);
if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) {
s->full_pel[0] = get_bits1(&s->gb);
f_code = get_bits(&s->gb, 3);
- if (f_code == 0)
+ if (f_code == 0 && avctx->error_resilience >= FF_ER_COMPLIANT)
return -1;
s->mpeg_f_code[0][0] = f_code;
s->mpeg_f_code[0][1] = f_code;
if (s->pict_type == B_TYPE) {
s->full_pel[1] = get_bits1(&s->gb);
f_code = get_bits(&s->gb, 3);
- if (f_code == 0)
+ if (f_code == 0 && avctx->error_resilience >= FF_ER_COMPLIANT)
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;
-
+
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;
s->avctx->sub_id = 2; /* indicates mpeg2 found */
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",
+ 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);
}
skip_bits(&s->gb, 1); //marker
h= get_bits(&s->gb, 14);
skip_bits(&s->gb, 1); //marker
-
+
s1->pan_scan.width= 16*w;
s1->pan_scan.height=16*h;
-
+
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG, "sde w:%d, h:%d\n", w, h);
}
nofco = 1;
if(s->progressive_sequence){
if(s->repeat_first_field){
- nofco++;
- if(s->top_field_first)
- nofco++;
- }
+ nofco++;
+ if(s->top_field_first)
+ nofco++;
+ }
}else{
if(s->picture_structure == PICT_FRAME){
nofco++;
- if(s->repeat_first_field)
- nofco++;
- }
+ if(s->repeat_first_field)
+ nofco++;
+ }
}
for(i=0; i<nofco; i++){
s1->pan_scan.position[i][0]= get_sbits(&s->gb, 16);
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)
- 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],
+ 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]
);
}
s->chroma_420_type = get_bits1(&s->gb);
s->progressive_frame = get_bits1(&s->gb);
- if(s->picture_structure == PICT_FRAME)
+ if(s->picture_structure == PICT_FRAME){
s->first_field=0;
- else{
+ 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);
}
-
+
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);
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);
}
-
+
/* composite display not parsed */
dprintf("intra_dc_precision=%d\n", s->intra_dc_precision);
dprintf("picture_structure=%d\n", s->picture_structure);
dprintf("progressive_frame=%d\n", s->progressive_frame);
}
-static void mpeg_decode_extension(AVCodecContext *avctx,
+static void mpeg_decode_extension(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
Mpeg1Context *s1 = avctx->priv_data;
int ext_type;
init_get_bits(&s->gb, buf, buf_size*8);
-
+
ext_type = get_bits(&s->gb, 4);
switch(ext_type) {
case 0x1:
} else if (s->progressive_frame) {
s->current_picture_ptr->repeat_pict = 1;
}
- }
+ }
*s->current_picture_ptr->pan_scan= s1->pan_scan;
}else{ //second field
int 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.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];
- }
+ }
}
}
#ifdef HAVE_XVMC
av_log(s->avctx, AV_LOG_ERROR, "slice below image (%d >= %d)\n", mb_y, s->mb_height);
return -1;
}
-
+
init_get_bits(&s->gb, *buf, buf_size*8);
ff_mpeg1_clean_buffers(s);
av_log(s->avctx, AV_LOG_ERROR, "qscale == 0\n");
return -1;
}
-
+
/* extra slice info */
while (get_bits1(&s->gb) != 0) {
skip_bits(&s->gb, 8);
}
-
+
s->mb_x=0;
for(;;) {
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",
+ 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->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" :"");
}
- }
-
+ }
+
for(;;) {
#ifdef HAVE_XVMC
//one 1 we memcpy blocks in xvmcvideo
s->dest[2] += 16 >> (s->chroma_x_shift + lowres);
MPV_decode_mb(s, s->block);
-
+
if (++s->mb_x >= s->mb_width) {
const int mb_size= 16>>s->avctx->lowres;
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(left < 0 || (left && show_bits(&s->gb, FFMIN(left, 23)))
+ if(left < 0 || (left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10)
|| (avctx->error_resilience >= FF_ER_AGGRESSIVE && left>8)){
- av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d\n", left);
+ av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d %0X\n", left, show_bits(&s->gb, FFMIN(left, 23)));
return -1;
}else
goto eos;
}
-
+
ff_init_block_index(s);
}
s->error_count= 3*(s->end_mb_y - s->start_mb_y)*s->mb_width;
for(;;){
- int start_code, ret;
+ uint32_t start_code;
+ int ret;
ret= mpeg_decode_slice((Mpeg1Context*)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",
+//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)
}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(s->mb_y == s->end_mb_y)
return 0;
-
- start_code = find_start_code(&buf, s->gb.buffer_end);
+
+ 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)
return -1;
}
-
+
return 0; //not reached
}
/**
* handles slice ends.
- * @return 1 if it seems to be the last slice of
+ * @return 1 if it seems to be the last slice of
*/
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
{
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
-
+
if (!s1->mpeg_enc_ctx_allocated || !s->current_picture_ptr)
return 0;
}
}
-static int mpeg1_decode_sequence(AVCodecContext *avctx,
+static int mpeg1_decode_sequence(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
Mpeg1Context *s1 = avctx->priv_data;
dprintf("intra matrix present\n");
for(i=0;i<64;i++)
dprintf(" %d", s->intra_matrix[s->dsp.idct_permutation[i]]);
- printf("\n");
+ dprintf("\n");
#endif
} else {
for(i=0;i<64;i++) {
dprintf("non intra matrix present\n");
for(i=0;i<64;i++)
dprintf(" %d", s->inter_matrix[s->dsp.idct_permutation[i]]);
- printf("\n");
+ dprintf("\n");
#endif
} else {
for(i=0;i<64;i++) {
s->chroma_inter_matrix[j] = v;
}
}
-
+
if(show_bits(&s->gb, 23) != 0){
av_log(s->avctx, AV_LOG_ERROR, "sequence header damaged\n");
return -1;
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)
- av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d\n",
+ av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d\n",
s->avctx->rc_buffer_size, s->bit_rate);
-
+
return 0;
}
if( avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT )
if( avctx->idct_algo == FF_IDCT_AUTO )
avctx->idct_algo = FF_IDCT_SIMPLE;
-
+
if (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
+ 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++) {
}
-static void mpeg_decode_user_data(AVCodecContext *avctx,
+static void mpeg_decode_user_data(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
const uint8_t *p;
}
}
-static void mpeg_decode_gop(AVCodecContext *avctx,
+static void mpeg_decode_gop(AVCodecContext *avctx,
const uint8_t *buf, int buf_size){
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
init_get_bits(&s->gb, buf, buf_size*8);
drop_frame_flag = get_bits1(&s->gb);
-
+
time_code_hours=get_bits(&s->gb,5);
time_code_minutes = get_bits(&s->gb,6);
skip_bits1(&s->gb);//marker bit
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);
+ time_code_hours, time_code_minutes, time_code_seconds,
+ time_code_pictures, broken_link);
}
/**
* finds 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)
+static int mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size)
{
int i;
- uint32_t state;
-
- state= pc->state;
-
+ uint32_t state= pc->state;
+
i=0;
if(!pc->frame_start_found){
for(i=0; i<buf_size; i++){
- state= (state<<8) | buf[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){
i++;
pc->frame_start_found=1;
}
}
}
-
+
if(pc->frame_start_found){
/* EOF considered as end of frame */
if (buf_size == 0)
return 0;
for(; i<buf_size; i++){
- state= (state<<8) | buf[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;
+ pc->state=-1;
return i-3;
}
}
}
- }
+ }
pc->state= state;
return END_NOT_FOUND;
}
/* handle buffering and image synchronisation */
-static int mpeg_decode_frame(AVCodecContext *avctx,
+static int mpeg_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
Mpeg1Context *s = avctx->priv_data;
const uint8_t *buf_end;
const uint8_t *buf_ptr;
- int ret, start_code, input_size;
+ uint32_t start_code;
+ int ret, input_size;
AVFrame *picture = data;
MpegEncContext *s2 = &s->mpeg_enc_ctx;
dprintf("fill_buffer\n");
if (buf_size == 0) {
- /* 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;
+ /* 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;
- *data_size = sizeof(AVFrame);
- }
+ *data_size = sizeof(AVFrame);
+ }
return 0;
}
if(s2->flags&CODEC_FLAG_TRUNCATED){
- int next= ff_mpeg1_find_frame_end(&s2->parse_context, buf, buf_size);
-
+ int next= mpeg1_find_frame_end(&s2->parse_context, buf, buf_size);
+
if( ff_combine_frame(&s2->parse_context, next, &buf, &buf_size) < 0 )
return buf_size;
- }
-
+ }
+
buf_ptr = buf;
buf_end = buf + buf_size;
-#if 0
- if (s->repeat_field % 2 == 1) {
+#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(s->mpeg_enc_ctx_allocated==0 && avctx->codec_tag == ff_get_fourcc("VCR2"))
vcr2_init_sequence(avctx);
-
+
s->slice_count= 0;
-
+
for(;;) {
/* find start next code */
- start_code = find_start_code(&buf_ptr, buf_end);
- if (start_code < 0){
- if(s2->pict_type != B_TYPE || avctx->hurry_up==0){
+ 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){
int i;
}
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);
}
- /* prepare data for next start code */
- switch(start_code) {
- case SEQ_START_CODE:
- mpeg1_decode_sequence(avctx, buf_ptr,
- input_size);
- 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);
- break;
- case GOP_START_CODE:
- s2->first_field=0;
- mpeg_decode_gop(avctx,
- buf_ptr, input_size);
+ /* prepare data for next start code */
+ switch(start_code) {
+ case SEQ_START_CODE:
+ mpeg1_decode_sequence(avctx, buf_ptr,
+ input_size);
+ 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);
+ break;
+ case GOP_START_CODE:
+ s2->first_field=0;
+ mpeg_decode_gop(avctx,
+ buf_ptr, input_size);
+ 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;
- default:
- if (start_code >= SLICE_MIN_START_CODE &&
- start_code <= SLICE_MAX_START_CODE) {
- int mb_y= start_code - SLICE_MIN_START_CODE;
-
- /* skip b frames if we dont have reference frames */
- if(s2->last_picture_ptr==NULL && s2->pict_type==B_TYPE) break;
- /* skip b frames if we are in a hurry */
- if(avctx->hurry_up && s2->pict_type==B_TYPE) 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->first_slice){
- s2->first_slice=0;
+ /* 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->first_slice){
+ s2->first_slice=0;
if(mpeg_field_start(s2) < 0)
- return -1;
- }
-
- 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];
-
- 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);
- }
+ return -1;
+ }
+
+ 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];
+
+ 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);
}
- break;
}
+ }
+ break;
+ }
}
}
encode_init,
MPV_encode_picture,
MPV_encode_end,
- .supported_framerates= frame_rate_tab+1,
+ .supported_framerates= ff_frame_rate_tab+1,
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
.capabilities= CODEC_CAP_DELAY,
};
encode_init,
MPV_encode_picture,
MPV_encode_end,
- .supported_framerates= frame_rate_tab+1,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
+ .supported_framerates= ff_frame_rate_tab+1,
+ .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, -1},
.capabilities= CODEC_CAP_DELAY,
};
#endif
static int mpeg_mc_decode_init(AVCodecContext *avctx){
Mpeg1Context *s;
- if( avctx->thread_count > 1)
+ if( avctx->thread_count > 1)
return -1;
if( !(avctx->slice_flags & SLICE_FLAG_CODED_ORDER) )
return -1;
#endif
-/* this is ugly i know, but the alternative is too make
+#ifdef CONFIG_MPEGVIDEO_PARSER
+static void mpegvideo_extract_headers(AVCodecParserContext *s,
+ AVCodecContext *avctx,
+ const uint8_t *buf, int buf_size)
+{
+ ParseContext1 *pc = s->priv_data;
+ const uint8_t *buf_end;
+ uint32_t start_code;
+ int frame_rate_index, ext_type, bytes_left;
+ int frame_rate_ext_n, frame_rate_ext_d;
+ int picture_structure, top_field_first, repeat_first_field, progressive_frame;
+ int horiz_size_ext, vert_size_ext, bit_rate_ext;
+//FIXME replace the crap with get_bits()
+ s->repeat_pict = 0;
+ buf_end = buf + buf_size;
+ while (buf < buf_end) {
+ start_code= -1;
+ buf= ff_find_start_code(buf, buf_end, &start_code);
+ bytes_left = buf_end - buf;
+ switch(start_code) {
+ case PICTURE_START_CODE:
+ if (bytes_left >= 2) {
+ s->pict_type = (buf[1] >> 3) & 7;
+ }
+ break;
+ case SEQ_START_CODE:
+ if (bytes_left >= 7) {
+ pc->width = (buf[0] << 4) | (buf[1] >> 4);
+ pc->height = ((buf[1] & 0x0f) << 8) | buf[2];
+ avcodec_set_dimensions(avctx, pc->width, pc->height);
+ frame_rate_index = buf[3] & 0xf;
+ pc->frame_rate.den = avctx->time_base.den = ff_frame_rate_tab[frame_rate_index].num;
+ pc->frame_rate.num = avctx->time_base.num = ff_frame_rate_tab[frame_rate_index].den;
+ avctx->bit_rate = ((buf[4]<<10) | (buf[5]<<2) | (buf[6]>>6))*400;
+ avctx->codec_id = CODEC_ID_MPEG1VIDEO;
+ avctx->sub_id = 1;
+ }
+ break;
+ case EXT_START_CODE:
+ if (bytes_left >= 1) {
+ ext_type = (buf[0] >> 4);
+ switch(ext_type) {
+ case 0x1: /* sequence extension */
+ if (bytes_left >= 6) {
+ horiz_size_ext = ((buf[1] & 1) << 1) | (buf[2] >> 7);
+ vert_size_ext = (buf[2] >> 5) & 3;
+ bit_rate_ext = ((buf[2] & 0x1F)<<7) | (buf[3]>>1);
+ frame_rate_ext_n = (buf[5] >> 5) & 3;
+ frame_rate_ext_d = (buf[5] & 0x1f);
+ pc->progressive_sequence = buf[1] & (1 << 3);
+ avctx->has_b_frames= !(buf[5] >> 7);
+
+ pc->width |=(horiz_size_ext << 12);
+ pc->height |=( vert_size_ext << 12);
+ avctx->bit_rate += (bit_rate_ext << 18) * 400;
+ avcodec_set_dimensions(avctx, pc->width, pc->height);
+ avctx->time_base.den = pc->frame_rate.den * (frame_rate_ext_n + 1);
+ avctx->time_base.num = pc->frame_rate.num * (frame_rate_ext_d + 1);
+ avctx->codec_id = CODEC_ID_MPEG2VIDEO;
+ avctx->sub_id = 2; /* forces MPEG2 */
+ }
+ break;
+ case 0x8: /* picture coding extension */
+ if (bytes_left >= 5) {
+ picture_structure = buf[2]&3;
+ top_field_first = buf[3] & (1 << 7);
+ repeat_first_field = buf[3] & (1 << 1);
+ progressive_frame = buf[4] & (1 << 7);
+
+ /* check if we must repeat the frame */
+ if (repeat_first_field) {
+ if (pc->progressive_sequence) {
+ if (top_field_first)
+ s->repeat_pict = 4;
+ else
+ s->repeat_pict = 2;
+ } else if (progressive_frame) {
+ s->repeat_pict = 1;
+ }
+ }
+
+ /* the packet only represents half a frame
+ XXX,FIXME maybe find a different solution */
+ if(picture_structure != 3)
+ s->repeat_pict = -1;
+ }
+ break;
+ }
+ }
+ break;
+ case -1:
+ goto the_end;
+ default:
+ /* we stop parsing when we encounter a slice. It ensures
+ that this function takes a negligible amount of time */
+ if (start_code >= SLICE_MIN_START_CODE &&
+ start_code <= SLICE_MAX_START_CODE)
+ goto the_end;
+ break;
+ }
+ }
+ the_end: ;
+}
+
+static int mpegvideo_parse(AVCodecParserContext *s,
+ AVCodecContext *avctx,
+ uint8_t **poutbuf, int *poutbuf_size,
+ const uint8_t *buf, int buf_size)
+{
+ ParseContext1 *pc1 = s->priv_data;
+ ParseContext *pc= &pc1->pc;
+ int next;
+
+ if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){
+ next= buf_size;
+ }else{
+ next= mpeg1_find_frame_end(pc, buf, buf_size);
+
+ if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) {
+ *poutbuf = NULL;
+ *poutbuf_size = 0;
+ return buf_size;
+ }
+
+ }
+ /* we have a full frame : we just parse the first few MPEG headers
+ to have the full timing information. The time take by this
+ function should be negligible for uncorrupted streams */
+ mpegvideo_extract_headers(s, avctx, buf, buf_size);
+#if 0
+ printf("pict_type=%d frame_rate=%0.3f repeat_pict=%d\n",
+ s->pict_type, (double)avctx->time_base.den / avctx->time_base.num, s->repeat_pict);
+#endif
+
+ *poutbuf = (uint8_t *)buf;
+ *poutbuf_size = buf_size;
+ return next;
+}
+
+static int mpegvideo_split(AVCodecContext *avctx,
+ const uint8_t *buf, int buf_size)
+{
+ int i;
+ uint32_t state= -1;
+
+ for(i=0; i<buf_size; i++){
+ state= (state<<8) | buf[i];
+ if(state != 0x1B3 && state != 0x1B5 && state < 0x200 && state >= 0x100)
+ return i-3;
+ }
+ return 0;
+}
+
+AVCodecParser mpegvideo_parser = {
+ { CODEC_ID_MPEG1VIDEO, CODEC_ID_MPEG2VIDEO },
+ sizeof(ParseContext1),
+ NULL,
+ mpegvideo_parse,
+ ff_parse1_close,
+ mpegvideo_split,
+};
+#endif /* !CONFIG_MPEGVIDEO_PARSER */
+
+/* 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"
+#include "mdec.c"
projects / ffmpeg / blobdiff