/*
* MPEG1 codec / MPEG2 decoder
* Copyright (c) 2000,2001 Fabrice Bellard.
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
*
* 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
+ * 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"
#include "mpeg12data.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 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 void mpeg1_skip_picture(MpegEncContext *s, int pict_num);
-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 mpeg2_decode_block_non_intra(MpegEncContext *s,
- DCTELEM *block,
+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,
+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);
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 int8_t mpeg1_max_level[2][64];
#endif //CONFIG_ENCODERS
-static void init_2d_vlc_rl(RLTable *rl)
+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);
+ &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));
-
- rl->rl_vlc[0]= av_malloc(rl->vlc.table_size*sizeof(RL_VLC_ELEM));
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;
int run;
for(run=0; run<64; run++){
int len, bits, code;
-
+
int alevel= ABS(level);
int sign= (level>>31)&1;
code= rl->index_run[0][run] + alevel - 1;
if (code < 111 /* rl->n */) {
- /* store the vlc & sign at once */
+ /* store the vlc & sign at once */
len= mpeg1_vlc[code][1]+1;
bits= (mpeg1_vlc[code][0]<<1) + sign;
} else {
}
}
+
+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/frame_rate_tab[i].den*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);
+ if(d < dmin){
+ dmin=d;
+ s->frame_rate_index= i;
+ }
+ }
+ if(dmin)
+ return -1;
+ else
+ return 0;
+}
+
+static int encode_init(AVCodecContext *avctx)
+{
+ MpegEncContext *s = avctx->priv_data;
+
+ if(MPV_encode_init(avctx) < 0)
+ return -1;
+
+ 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);
+ }
+ }
+
+ return 0;
+}
+
static void put_header(MpegEncContext *s, int header)
{
align_put_bits(&s->pb);
{
unsigned int vbv_buffer_size;
unsigned int fps, v;
- int n, i;
+ 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= frame_rate_tab[s->frame_rate_index];
+
/* mpeg1 header repeated every gop */
put_header(s, SEQ_START_CODE);
-
- /* search closest frame rate */
- {
- int i, dmin, d;
- s->frame_rate_index = 0;
- dmin = 0x7fffffff;
- for(i=1;i<14;i++) {
- if(s->avctx->strict_std_compliance >= 0 && i>=9) break;
-
- d = abs(MPEG1_FRAME_RATE_BASE*(int64_t)s->avctx->frame_rate/s->avctx->frame_rate_base - frame_rate_tab[i]);
- if (d < dmin) {
- dmin = d;
- s->frame_rate_index = i;
- }
- }
- }
-
+
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);
-
+
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 * frame_rate_tab[s->frame_rate_index] <= MPEG1_FRAME_RATE_BASE*396*25 &&
- frame_rate_tab[s->frame_rate_index] <= MPEG1_FRAME_RATE_BASE*30 &&
+ 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);
put_header(s, EXT_START_CODE);
put_bits(&s->pb, 4, 1); //seq ext
put_bits(&s->pb, 1, 0); //esc
- put_bits(&s->pb, 3, 4); //profile
- put_bits(&s->pb, 4, 8); //level
- put_bits(&s->pb, 1, s->progressive_sequence=1);
+
+ 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->progressive_sequence);
put_bits(&s->pb, 2, 1); //chroma format 4:2:0
put_bits(&s->pb, 2, 0); //horizontal size ext
put_bits(&s->pb, 2, 0); //vertical size 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 */
/* time code : we must convert from the real frame rate to a
fake mpeg frame rate in case of low frame rate */
- fps = frame_rate_tab[s->frame_rate_index];
- time_code = (int64_t)s->fake_picture_number * MPEG1_FRAME_RATE_BASE;
- s->gop_picture_number = s->fake_picture_number;
+ 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) / MPEG1_FRAME_RATE_BASE));
- put_bits(&s->pb, 1, 0); /* closed gop */
+ 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 */
}
-
- if (s->avctx->frame_rate < (24 * s->avctx->frame_rate_base) && s->picture_number > 0) {
- /* insert empty P pictures to slow down to the desired
- frame rate. Each fake pictures takes about 20 bytes */
- fps = frame_rate_tab[s->frame_rate_index];
- n = av_rescale((int64_t)s->picture_number * s->avctx->frame_rate_base, fps, s->avctx->frame_rate) / MPEG1_FRAME_RATE_BASE - 1;
- while (s->fake_picture_number < n) {
- mpeg1_skip_picture(s, s->fake_picture_number -
- s->gop_picture_number);
- s->fake_picture_number++;
- }
-
- }
}
static inline void encode_mb_skip_run(MpegEncContext *s, int run){
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]);
}
-
-/* insert a fake P picture */
-static void mpeg1_skip_picture(MpegEncContext *s, int pict_num)
-{
- assert(s->codec_id == CODEC_ID_MPEG1VIDEO); // mpeg2 can do these repeat things
-
- /* mpeg1 picture header */
- put_header(s, PICTURE_START_CODE);
- /* temporal reference */
- put_bits(&s->pb, 10, pict_num & 0x3ff);
-
- put_bits(&s->pb, 3, P_TYPE);
- put_bits(&s->pb, 16, 0xffff); /* non constant bit rate */
-
- put_bits(&s->pb, 1, 1); /* integer coordinates */
- put_bits(&s->pb, 3, 1); /* forward_f_code */
-
- put_bits(&s->pb, 1, 0); /* extra bit picture */
-
- /* only one slice */
- put_header(s, SLICE_MIN_START_CODE);
- put_bits(&s->pb, 5, 1); /* quantizer scale */
- put_bits(&s->pb, 1, 0); /* slice extra information */
-
- encode_mb_skip_run(s, 0);
-
- /* empty macroblock */
- put_bits(&s->pb, 3, 1); /* motion only */
-
- /* zero motion x & y */
- put_bits(&s->pb, 1, 1);
- put_bits(&s->pb, 1, 1);
-
- /* output a number of empty slice */
- encode_mb_skip_run(s, s->mb_width * s->mb_height - 2);
-
- /* empty macroblock */
- put_bits(&s->pb, 3, 1); /* motion only */
-
- /* zero motion x & y */
- put_bits(&s->pb, 1, 1);
- put_bits(&s->pb, 1, 1);
-}
#endif //CONFIG_ENCODERS
static void common_init(MpegEncContext *s)
{
+
s->y_dc_scale_table=
- s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
+ s->c_dc_scale_table= mpeg2_dc_scale_table[s->intra_dc_precision];
+
}
void ff_mpeg1_clean_buffers(MpegEncContext *s){
/* 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);
- 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);
- put_bits(&s->pb, 16, 0xffff); /* non constant bit rate */
-
+
+ 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, 1, 0); /* extra bit picture */
-
+
+ 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
put_bits(&s->pb, 8, 255);
}
put_bits(&s->pb, 2, s->intra_dc_precision);
- put_bits(&s->pb, 2, s->picture_structure= PICT_FRAME);
- put_bits(&s->pb, 1, s->top_field_first);
- put_bits(&s->pb, 1, s->frame_pred_frame_dct= 1);
+
+ 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);
- put_bits(&s->pb, 1, s->chroma_420_type=1);
- put_bits(&s->pb, 1, s->progressive_frame=1);
+ s->progressive_frame = s->progressive_sequence;
+ put_bits(&s->pb, 1, s->chroma_420_type=s->progressive_frame);
+ 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;
+
+ 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]);
+ }
+ }
+
s->mb_y=0;
ff_mpeg1_encode_slice_header(s);
}
+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)
+ 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)
cbp |= 1 << (5 - i);
}
- if (cbp == 0 && !first_mb && (mb_x != s->mb_width - 1 || (mb_y != s->mb_height - 1 && s->codec_id == CODEC_ID_MPEG1VIDEO)) &&
+ 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->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);
}else{
encode_mb_skip_run(s, s->mb_skip_run);
}
-
+
if (s->pict_type == I_TYPE) {
if(s->dquant && cbp){
- put_bits(&s->pb, 2, 1); /* macroblock_type : macroblock_quant = 1 */
+ put_mb_modes(s, 2, 1, 0, 0); /* macroblock_type : macroblock_quant = 1 */
put_bits(&s->pb, 5, s->qscale);
}else{
- put_bits(&s->pb, 1, 1); /* macroblock_type : macroblock_quant = 0 */
+ 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_bits(&s->pb, 6, 0x01);
+ put_mb_modes(s, 6, 0x01, 0, 0);
put_bits(&s->pb, 5, s->qscale);
}else{
- put_bits(&s->pb, 5, 0x03);
+ put_mb_modes(s, 5, 0x03, 0, 0);
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
s->i_count++;
- s->last_mv[0][0][0] =
- s->last_mv[0][0][1] = 0;
- } else if (s->pict_type == P_TYPE) {
+ 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 == 0 && motion_y == 0) {
+ if ((motion_x|motion_y) == 0) {
if(s->dquant){
- put_bits(&s->pb, 5, 1); /* macroblock_pattern & quant */
+ put_mb_modes(s, 5, 1, 0, 0); /* macroblock_pattern & quant */
put_bits(&s->pb, 5, s->qscale);
}else{
- put_bits(&s->pb, 2, 1); /* macroblock_pattern only */
+ put_mb_modes(s, 2, 1, 0, 0); /* macroblock_pattern only */
}
s->misc_bits+= get_bits_diff(s);
- put_bits(&s->pb, mbPatTable[cbp - 1][1], mbPatTable[cbp - 1][0]);
} else {
if(s->dquant){
- put_bits(&s->pb, 5, 2); /* motion + cbp */
+ put_mb_modes(s, 5, 2, 1, 0); /* motion + cbp */
put_bits(&s->pb, 5, s->qscale);
}else{
- put_bits(&s->pb, 1, 1); /* motion + cbp */
+ 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);
- put_bits(&s->pb, mbPatTable[cbp - 1][1], mbPatTable[cbp - 1][0]);
}
} 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->f_count++;
- } else
- { // RAL: All the following bloc added for B frames:
- if (cbp != 0)
- { // With coded bloc pattern
- if (s->mv_dir == (MV_DIR_FORWARD | MV_DIR_BACKWARD))
- { // Bi-directional motion
- if (s->dquant)
- { // With QScale
- put_bits(&s->pb, 5, 2);
- put_bits(&s->pb, 5, s->qscale);
- }
- else // Without QScale
- put_bits(&s->pb, 2, 3);
- s->misc_bits += get_bits_diff(s);
- 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[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->b_count++;
- s->f_count++;
- s->mv_bits += get_bits_diff(s);
- put_bits(&s->pb, mbPatTable[cbp - 1][1], mbPatTable[cbp - 1][0]);
- }
- else if (s->mv_dir == MV_DIR_BACKWARD)
- { // Backward motion
- if (s->dquant)
- { // With QScale
- put_bits(&s->pb, 6, 2);
- put_bits(&s->pb, 5, s->qscale);
- }
- else // Without QScale
- put_bits(&s->pb, 3, 3);
- s->misc_bits += get_bits_diff(s);
- mpeg1_encode_motion(s, motion_x - s->last_mv[1][0][0], s->b_code);
- mpeg1_encode_motion(s, motion_y - s->last_mv[1][0][1], s->b_code);
- s->b_count++;
- s->mv_bits += get_bits_diff(s);
- put_bits(&s->pb, mbPatTable[cbp - 1][1], mbPatTable[cbp - 1][0]);
- }
- else if (s->mv_dir == MV_DIR_FORWARD)
- { // Forward motion
- if (s->dquant)
- { // With QScale
- put_bits(&s->pb, 6, 3);
- put_bits(&s->pb, 5, s->qscale);
- }
- else // Without QScale
- put_bits(&s->pb, 4, 3);
- s->misc_bits += get_bits_diff(s);
- mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code);
- mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code);
- s->f_count++;
- s->mv_bits += get_bits_diff(s);
- put_bits(&s->pb, mbPatTable[cbp - 1][1], mbPatTable[cbp - 1][0]);
- }
+ 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
- { // No coded bloc pattern
- if (s->mv_dir == (MV_DIR_FORWARD | MV_DIR_BACKWARD))
- { // Bi-directional motion
- put_bits(&s->pb, 2, 2); /* backward & forward motion */
- 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[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->b_count++;
- s->f_count++;
- }
- else if (s->mv_dir == MV_DIR_BACKWARD)
- { // Backward motion
- put_bits(&s->pb, 3, 2); /* backward motion only */
- mpeg1_encode_motion(s, motion_x - s->last_mv[1][0][0], s->b_code);
- mpeg1_encode_motion(s, motion_y - s->last_mv[1][0][1], s->b_code);
- s->b_count++;
- }
- else if (s->mv_dir == MV_DIR_FORWARD)
- { // Forward motion
- put_bits(&s->pb, 4, 2); /* forward motion only */
- mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code);
- mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code);
- s->f_count++;
- }
+ } 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)
+ put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
+ 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->mv_bits += get_bits_diff(s);
+ }
+ 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];
}
- // End of bloc from RAL
+ s->b_count++;
+ }
}
+ s->mv_bits += get_bits_diff(s);
+ if(cbp)
+ put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
+ }
for(i=0;i<6;i++) {
if (cbp & (1 << (5 - i))) {
mpeg1_encode_block(s, block[i], i);
else
s->p_tex_bits+= get_bits_diff(s);
}
-
- // RAL: By this:
- if (s->mv_dir & MV_DIR_FORWARD)
- {
- s->last_mv[0][0][0]= s->mv[0][0][0];
- s->last_mv[0][0][1]= s->mv[0][0][1];
- }
- if (s->mv_dir & MV_DIR_BACKWARD)
- {
- s->last_mv[1][0][0]= s->mv[1][0][0];
- s->last_mv[1][0][1]= s->mv[1][0][1];
- }
}
// RAL: Parameter added: f_or_b_code
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
{
- int code, bit_size, l, m, bits, range, sign;
+ 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]);
+ mbMotionVectorTable[0][1],
+ mbMotionVectorTable[0][0]);
} else {
bit_size = f_or_b_code - 1;
range = 1 << bit_size;
/* modulo encoding */
- l = 16 * range;
- m = 2 * l;
- if (val < -l) {
- val += m;
- } else if (val >= l) {
- val -= m;
- }
+ l= INT_BIT - 5 - bit_size;
+ val= (val<<l)>>l;
if (val >= 0) {
val--;
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);
-
- 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_rl(&rl_mpeg1, 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_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 = vlc_dc_table[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);
- }
+ /* 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);
+ }
mv_penalty= av_mallocz( sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1) );
else{
int val, bit_size, range, code;
- bit_size = s->f_code - 1;
+ bit_size = f_code - 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++){
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);
+ &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;
#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 */
+ /* store the vlc & sign at once */
put_bits(&s->pb, mpeg1_vlc[code][1]+1, (mpeg1_vlc[code][0]<<1) + sign);
} else {
- /* escape seems to be pretty rare <5% so i dont optimize it */
+ /* 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: only clip in this case */
put_bits(&s->pb, 6, run);
static VLC mb_btype_vlc;
static VLC mb_pat_vlc;
-static void init_vlcs()
+static void init_vlcs(void)
{
static int done = 0;
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);
- init_vlc(&dc_chroma_vlc, DC_VLC_BITS, 12,
+ 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);
- init_vlc(&mv_vlc, MV_VLC_BITS, 17,
+ 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);
- init_vlc(&mbincr_vlc, MBINCR_VLC_BITS, 36,
+ &mbMotionVectorTable[0][0], 2, 1, 1);
+ init_vlc(&mbincr_vlc, MBINCR_VLC_BITS, 36,
&mbAddrIncrTable[0][1], 2, 1,
- &mbAddrIncrTable[0][0], 2, 1);
- init_vlc(&mb_pat_vlc, MB_PAT_VLC_BITS, 63,
+ &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);
-
- init_vlc(&mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7,
+ &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);
- init_vlc(&mb_btype_vlc, MB_BTYPE_VLC_BITS, 11,
+ &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);
- init_rl(&rl_mpeg1);
- init_rl(&rl_mpeg2);
+ &table_mb_btype[0][0], 2, 1, 1);
+ init_rl(&rl_mpeg1, 1);
+ init_rl(&rl_mpeg2, 1);
- init_2d_vlc_rl(&rl_mpeg1);
- init_2d_vlc_rl(&rl_mpeg2);
+ init_2d_vlc_rl(&rl_mpeg1, 1);
+ init_2d_vlc_rl(&rl_mpeg2, 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;
static inline int get_qscale(MpegEncContext *s)
{
int qscale = get_bits(&s->gb, 5);
- if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
- if (s->q_scale_type) {
- return non_linear_qscale[qscale];
- } else {
- return qscale << 1;
- }
+ if (s->q_scale_type) {
+ return non_linear_qscale[qscale];
+ } else {
+ return qscale << 1;
}
- return qscale;
}
/* motion type (for mpeg2) */
#define MT_DMV 3
static int mpeg_decode_mb(MpegEncContext *s,
- DCTELEM block[6][64])
+ DCTELEM block[12][64])
{
int i, j, k, cbp, val, mb_type, motion_type;
-
+ const int mb_block_count = 4 + (1<< s->chroma_format);
+
dprintf("decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
- assert(s->mb_skiped==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, "skiped MB in I frame at %d %d\n", s->mb_x, s->mb_y);
+ 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<6;i++)
+ for(i=0;i<12;i++)
s->block_last_index[i] = -1;
- s->mv_type = MV_TYPE_16X16;
+ 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->mb_skiped = 1;
+ s->field_select[0][0]= s->picture_structure - 1;
+ 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;
} 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,
+ 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 - 1] | MB_TYPE_SKIP;
+ 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)
- s->mb_skiped = 1;
+ 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;
dprintf("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){
+ 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 */
#endif
if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
- for(i=0;i<6;i++) {
- if (mpeg2_decode_block_intra(s, s->pblocks[i], i) < 0)
- return -1;
+ 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)
+ return -1;
+ }
}
} else {
for(i=0;i<6;i++) {
s->qscale = get_qscale(s);
s->mv_dir = MV_DIR_FORWARD;
- s->mv_type = MV_TYPE_16X16;
+ if(s->picture_structure == PICT_FRAME)
+ s->mv_type = MV_TYPE_16X16;
+ else{
+ s->mv_type = MV_TYPE_FIELD;
+ mb_type |= MB_TYPE_INTERLACED;
+ s->field_select[0][0]= s->picture_structure - 1;
+ }
s->last_mv[0][0][0] = 0;
s->last_mv[0][0][1] = 0;
s->last_mv[0][1][0] = 0;
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;
+ 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]);
+ }
+
cbp = get_vlc2(&s->gb, mb_pat_vlc.table, MB_PAT_VLC_BITS, 1);
- if (cbp < 0){
+ if (cbp < 0 || ((cbp == 0) && (s->chroma_format < 2)) ){
av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
- cbp++;
+ 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->swap_uv){
exchange_uv(s);
}
- }
+ }
#endif
if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
- for(i=0;i<6;i++) {
- if (cbp & 32) {
- if (mpeg2_decode_block_non_intra(s, s->pblocks[i], i) < 0)
- return -1;
- } else {
- s->block_last_index[i] = -1;
+ 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;
+ }
+ }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)
+ return -1;
+ } else {
+ s->block_last_index[i] = -1;
+ }
+ cbp+=cbp;
}
- cbp+=cbp;
}
} else {
- for(i=0;i<6;i++) {
- if (cbp & 32) {
- if (mpeg1_decode_block_inter(s, s->pblocks[i], i) < 0)
- return -1;
- } else {
- s->block_last_index[i] = -1;
+ 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);
+ } else {
+ s->block_last_index[i] = -1;
+ }
+ cbp+=cbp;
+ }
+ }else{
+ for(i=0;i<6;i++) {
+ if (cbp & 32) {
+ 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<6;i++)
+ for(i=0;i<12;i++)
s->block_last_index[i] = -1;
}
}
if (sign)
val = -val;
val += pred;
-
+
/* modulo decoding */
- l = 1 << (shift+4);
- val = ((val + l)&(l*2-1)) - l;
+ l= INT_BIT - 5 - shift;
+ val = (val<<l)>>l;
return val;
}
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);
-
+ 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])>>3;
+ 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);
j = scantable[i];
if(level<0){
level= -level;
- level= (level*qscale*quant_matrix[j])>>3;
+ level= (level*qscale*quant_matrix[j])>>4;
level= (level-1)|1;
level= -level;
}else{
- level= (level*qscale*quant_matrix[j])>>3;
+ level= (level*qscale*quant_matrix[j])>>4;
level= (level-1)|1;
}
}
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;
const int qscale= s->qscale;
{
- int v;
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);
- v= SHOW_UBITS(re, &s->gb, 2);
- if (v & 2) {
- LAST_SKIP_BITS(re, &s->gb, 2);
- level= (3*qscale*quant_matrix[0])>>4;
+ if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+ level= (3*qscale*quant_matrix[0])>>5;
level= (level-1)|1;
- if(v&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(;;) {
- UPDATE_CACHE(re, &s->gb);
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2);
-
- if(level == 127){
- break;
- } else if(level != 0) {
+ 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])>>4;
+ 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);
- LAST_SKIP_BITS(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; LAST_SKIP_BITS(re, &s->gb, 8);
+ 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) ; LAST_SKIP_BITS(re, &s->gb, 8);
+ 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])>>4;
+ level= ((level*2+1)*qscale*quant_matrix[j])>>5;
level= (level-1)|1;
level= -level;
}else{
- level= ((level*2+1)*qscale*quant_matrix[j])>>4;
+ level= ((level*2+1)*qscale*quant_matrix[j])>>5;
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;
}
-/* Also does unquantization here, since I will never support mpeg2
- encoding */
-static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
- DCTELEM *block,
- int n)
+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 uint16_t *quant_matrix;
const int qscale= s->qscale;
- int mismatch;
-
- mismatch = 1;
{
- int v;
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);
- v= SHOW_UBITS(re, &s->gb, 2);
- if (v & 2) {
- LAST_SKIP_BITS(re, &s->gb, 2);
- level= (3*qscale*quant_matrix[0])>>5;
- if(v&1)
+ 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;
- 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(;;) {
- UPDATE_CACHE(re, &s->gb);
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2);
-
- if(level == 127){
- break;
- } else if(level != 0) {
+ 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*2+1)*qscale)>>1;
+ 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);
+ 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);
-
+ 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*2+1)*qscale*quant_matrix[j])>>5;
+ level= -level;
+ level= ((level*2+1)*qscale)>>1;
+ level= (level-1)|1;
level= -level;
}else{
- level= ((level*2+1)*qscale*quant_matrix[j])>>5;
+ level= ((level*2+1)*qscale)>>1;
+ 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;
- }
-
- 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);
+ }
+ 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;
+ }
+
+ 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_decode_block_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;
+ 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);
+
+ i += run;
+ j = scantable[i];
+ if(level<0){
+ level= ((-level*2+1)*qscale)>>1;
+ level= -level;
+ }else{
+ 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);
+ CLOSE_READER(re, &s->gb);
+ s->block_last_index[n] = i;
+ return 0;
+}
+
+
+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 - 3;
+ component = (n&1) + 1;
}
diff = decode_dc(&s->gb, component);
if (diff >= 0xffff)
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);
-
+ 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,
+ int n)
+{
+ 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;
+
+ /* 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;
+
+ //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;
+
+ MPV_decode_defaults(s2);
+
+ 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();
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(uint8_t **pbuf_ptr, uint8_t *buf_end)
-{
- uint8_t *buf_ptr;
- unsigned int state=0xFFFFFFFF, v;
- int val;
-
- buf_ptr = *pbuf_ptr;
- while (buf_ptr < buf_end) {
- v = *buf_ptr++;
- if (state == 0x000001) {
- state = ((state << 8) | v) & 0xffffff;
- val = state;
- goto found;
- }
- state = ((state << 8) | v) & 0xffffff;
- }
- val = -1;
- found:
- *pbuf_ptr = buf_ptr;
- return val;
+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
+//it may be called in different places for mpeg1 and mpeg2
+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||
+ 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;
+ }
+
+ 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 = frame_rate_tab[s->frame_rate_index].num;
+ avctx->time_base.num= 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,
+ 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}
+ );
+ }
+ }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);
+ }
+ }
+ //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 )
+ 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));
+
+ if (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);
+
+ s1->mpeg_enc_ctx_allocated = 1;
+ }
+ return 0;
}
-static int mpeg1_decode_picture(AVCodecContext *avctx,
- uint8_t *buf, int buf_size)
+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;
+ 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);
- dprintf("pict_type=%d number=%d\n", s->pict_type, s->picture_number);
+ if(s->pict_type == 0 || s->pict_type > 3)
+ return -1;
- skip_bits(&s->gb, 16);
+ vbv_delay= get_bits(&s->gb, 16);
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;
return 0;
}
-static void mpeg_decode_sequence_extension(MpegEncContext *s)
+static void mpeg_decode_sequence_extension(Mpeg1Context *s1)
{
+ MpegEncContext *s= &s1->mpeg_enc_ctx;
int horiz_size_ext, vert_size_ext;
- int bit_rate_ext, vbv_buf_ext;
- int frame_rate_ext_n, frame_rate_ext_d;
- int level, profile;
+ int bit_rate_ext;
skip_bits(&s->gb, 1); /* profil and level esc*/
- profile= get_bits(&s->gb, 3);
- level= get_bits(&s->gb, 4);
+ 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 */
- skip_bits(&s->gb, 2); /* chroma_format */
+ 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 = ((s->bit_rate / 400) | (bit_rate_ext << 12)) * 400;
+ s->bit_rate += (bit_rate_ext << 18) * 400;
skip_bits1(&s->gb); /* marker */
- vbv_buf_ext = get_bits(&s->gb, 8);
+ 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;
- frame_rate_ext_n = get_bits(&s->gb, 2);
- frame_rate_ext_d = get_bits(&s->gb, 5);
- av_reduce(
- &s->avctx->frame_rate,
- &s->avctx->frame_rate_base,
- frame_rate_tab[s->frame_rate_index] * (frame_rate_ext_n+1),
- MPEG1_FRAME_RATE_BASE * (frame_rate_ext_d+1),
- 1<<30);
+ 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 */
- if(s->aspect_ratio_info <= 1)
- s->avctx->sample_aspect_ratio= mpeg2_aspect[s->aspect_ratio_info];
- else{
- s->avctx->sample_aspect_ratio=
- av_div_q(
- mpeg2_aspect[s->aspect_ratio_info],
- (AVRational){s->width, s->height}
- );
- }
-
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
- av_log(s->avctx, AV_LOG_DEBUG, "profile: %d, level: %d \n", profile, level);
+ 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)
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->aspect_ratio_info > 1)
- s->avctx->sample_aspect_ratio=
- av_div_q(
- mpeg2_aspect[s->aspect_ratio_info],
- (AVRational){w, h}
- );
-
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;
-
- for(i=0; i<1; i++){ //FIXME count
+ int i,nofco;
+
+ nofco = 1;
+ if(s->progressive_sequence){
+ if(s->repeat_first_field){
+ nofco++;
+ if(s->top_field_first)
+ nofco++;
+ }
+ }else{
+ if(s->picture_structure == PICT_FRAME){
+ nofco++;
+ 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
}
-
+
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->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;
else{
s->first_field ^= 1;
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->intra_h_scantable, ff_alternate_vertical_scan);
- ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_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);
- ff_init_scantable(s->dsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
- ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
}
-
+
/* 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,
- uint8_t *buf, int buf_size)
+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;
init_get_bits(&s->gb, buf, buf_size*8);
-
+
ext_type = get_bits(&s->gb, 4);
switch(ext_type) {
case 0x1:
- mpeg_decode_sequence_extension(s);
+ mpeg_decode_sequence_extension(s1);
break;
case 0x2:
mpeg_decode_sequence_display_extension(s1);
}
static void exchange_uv(MpegEncContext *s){
-short * tmp;
-
- tmp = s->pblocks[4];
+ short * tmp = s->pblocks[4];
s->pblocks[4] = s->pblocks[5];
s->pblocks[5] = tmp;
}
-#define DECODE_SLICE_FATAL_ERROR -2
-#define DECODE_SLICE_ERROR -1
-#define DECODE_SLICE_OK 0
-
-/**
- * decodes a slice.
- * @return DECODE_SLICE_FATAL_ERROR if a non recoverable error occured<br>
- * DECODE_SLICE_ERROR if the slice is damaged<br>
- * DECODE_SLICE_OK if this slice is ok<br>
- */
-static int mpeg_decode_slice(AVCodecContext *avctx,
- AVFrame *pict,
- int start_code,
- uint8_t **buf, int buf_size)
-{
- Mpeg1Context *s1 = avctx->priv_data;
- MpegEncContext *s = &s1->mpeg_enc_ctx;
- int ret;
- const int field_pic= s->picture_structure != PICT_FRAME;
+static int mpeg_field_start(MpegEncContext *s){
+ AVCodecContext *avctx= s->avctx;
+ Mpeg1Context *s1 = (Mpeg1Context*)s;
- s->resync_mb_x= s->mb_x =
- s->resync_mb_y= s->mb_y = -1;
-
- start_code = (start_code - 1) & 0xff;
- if (start_code >= s->mb_height){
- av_log(s->avctx, AV_LOG_ERROR, "slice below image (%d >= %d)\n", start_code, s->mb_height);
- return -1;
- }
-
- ff_mpeg1_clean_buffers(s);
- s->interlaced_dct = 0;
-
/* start frame decoding */
- if (s->first_slice) {
- if(s->first_field || s->picture_structure==PICT_FRAME){
+ if(s->first_field || s->picture_structure==PICT_FRAME){
if(MPV_frame_start(s, avctx) < 0)
- return DECODE_SLICE_FATAL_ERROR;
+ return -1;
ff_er_frame_start(s);
} else if (s->progressive_frame) {
s->current_picture_ptr->repeat_pict = 1;
}
- }
+ }
*s->current_picture_ptr->pan_scan= s1->pan_scan;
-
- //printf("%d\n", s->current_picture_ptr->repeat_pict);
-
- 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 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 ? "pro" :"", 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" :"");
- }
- }else{ //second field
+ }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
// MPV_frame_start will call this function too,
// but we need to call it on every field
- if(s->avctx->xvmc_acceleration)
+ if(s->avctx->xvmc_acceleration)
XVMC_field_start(s,avctx);
#endif
- }//fi(s->first_slice)
- s->first_slice = 0;
+
+ return 0;
+}
+
+#define DECODE_SLICE_ERROR -1
+#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>
+ */
+static int mpeg_decode_slice(Mpeg1Context *s1, 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;
+
+ 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;
+ }
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){
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(;;) {
break;
}
}
-
+
s->resync_mb_x= s->mb_x;
- s->resync_mb_y= s->mb_y = start_code;
+ 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){
+ 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" :"");
+ }
+ }
+
for(;;) {
#ifdef HAVE_XVMC
//one 1 we memcpy blocks in xvmcvideo
XVMC_init_block(s);//set s->block
#endif
- s->dsp.clear_blocks(s->block[0]);
-
ret = mpeg_decode_mb(s, s->block);
s->chroma_qscale= s->qscale;
if (ret < 0)
return -1;
- if(s->current_picture.motion_val[0]){ //note motion_val is normally NULL unless we want to extract the MVs
- const int wrap = s->block_wrap[0];
- const int xy = s->mb_x*2 + 1 + (s->mb_y*2 +1)*wrap;
- int motion_for_x, motion_for_y, motion_back_x, motion_back_y;
- if (s->mb_intra) {
- motion_for_x = motion_for_y = motion_back_x = motion_back_y = 0;
- }else if (s->mv_type == MV_TYPE_16X16){
- motion_for_x = s->mv[0][0][0];
- motion_for_y = s->mv[0][0][1];
- motion_back_x = s->mv[1][0][0];
- motion_back_y = s->mv[1][0][1];
- } else /*if ((s->mv_type == MV_TYPE_FIELD) || (s->mv_type == MV_TYPE_16X8))*/ {
- motion_for_x = s->mv[0][0][0] + s->mv[0][1][0];
- motion_for_y = s->mv[0][0][1] + s->mv[0][1][1];
- motion_for_x = (motion_for_x>>1) | (motion_for_x&1);
- motion_back_x = s->mv[1][0][0] + s->mv[1][1][0];
- motion_back_y = s->mv[1][0][1] + s->mv[1][1][1];
- motion_back_x = (motion_back_x>>1) | (motion_back_x&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;
+ 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)) {
+ motion_x = motion_y = 0;
+ }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_x = s->mv[dir][i][0];
+ motion_y = s->mv[dir][i][1];
+ }
- s->current_picture.motion_val[0][xy][0] = motion_for_x;
- s->current_picture.motion_val[0][xy][1] = motion_for_y;
- s->current_picture.motion_val[0][xy + 1][0] = motion_for_x;
- s->current_picture.motion_val[0][xy + 1][1] = motion_for_y;
- s->current_picture.motion_val[0][xy + wrap][0] = motion_for_x;
- s->current_picture.motion_val[0][xy + wrap][1] = motion_for_y;
- s->current_picture.motion_val[0][xy + 1 + wrap][0] = motion_for_x;
- s->current_picture.motion_val[0][xy + 1 + wrap][1] = motion_for_y;
-
- if(s->pict_type != B_TYPE){
- motion_back_x = motion_back_y = 0;
+ 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);
+ }
+ xy += wrap;
}
-
- s->current_picture.motion_val[1][xy][0] = motion_back_x;
- s->current_picture.motion_val[1][xy][1] = motion_back_y;
- s->current_picture.motion_val[1][xy + 1][0] = motion_back_x;
- s->current_picture.motion_val[1][xy + 1][1] = motion_back_y;
- s->current_picture.motion_val[1][xy + wrap][0] = motion_back_x;
- s->current_picture.motion_val[1][xy + wrap][1] = motion_back_y;
- s->current_picture.motion_val[1][xy + 1 + wrap][0] = motion_back_x;
- s->current_picture.motion_val[1][xy + 1 + wrap][1] = motion_back_y;
}
- s->dest[0] += 16;
- s->dest[1] += 8;
- s->dest[2] += 8;
+ s->dest[0] += 16 >> lowres;
+ s->dest[1] += 16 >> (s->chroma_x_shift + lowres);
+ 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;
- ff_draw_horiz_band(s, 16*s->mb_y, 16);
+ ff_draw_horiz_band(s, mb_size*s->mb_y, mb_size);
s->mb_x = 0;
s->mb_y++;
}else
goto eos;
}
-
+
ff_init_block_index(s);
}
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;
+
+ s->error_count= 3*(s->end_mb_y - s->start_mb_y)*s->mb_width;
+
+ for(;;){
+ int start_code, 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",
+//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(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)
+ 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;
if (/*s->mb_y<<field_pic == s->mb_height &&*/ !s->first_field) {
/* end of image */
- if(s->codec_id == CODEC_ID_MPEG2VIDEO){
- s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_MPEG2;
- }else
- s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_MPEG1;
+ s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_MPEG2;
ff_er_frame_end(s);
if (s->pict_type == B_TYPE || s->low_delay) {
*pict= *(AVFrame*)s->current_picture_ptr;
- ff_print_debug_info(s, s->current_picture_ptr);
+ ff_print_debug_info(s, pict);
} else {
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;
- ff_print_debug_info(s, s->last_picture_ptr);
+ ff_print_debug_info(s, pict);
}
}
}
}
-static int mpeg1_decode_sequence(AVCodecContext *avctx,
- uint8_t *buf, int buf_size)
+static int mpeg1_decode_sequence(AVCodecContext *avctx,
+ const uint8_t *buf, int buf_size)
{
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
- int width, height, i, v, j;
- float aspect;
+ int width,height;
+ int i, v, j;
init_get_bits(&s->gb, buf, buf_size*8);
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)
return -1;
- aspect= 1.0/mpeg1_aspect[s->aspect_ratio_info];
- avctx->sample_aspect_ratio= av_d2q(aspect, 255);
-
s->frame_rate_index = get_bits(&s->gb, 4);
- if (s->frame_rate_index == 0)
+ 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;
- if (width <= 0 || height <= 0 ||
- (width % 2) != 0 || (height % 2) != 0)
- return -1;
- if (width != s->width ||
- height != s->height) {
- /* start new mpeg1 context decoding */
- s->out_format = FMT_MPEG1;
- if (s1->mpeg_enc_ctx_allocated) {
- MPV_common_end(s);
- }
- s->width = width;
- s->height = height;
- avctx->has_b_frames= 1;
- s->avctx = avctx;
- avctx->width = width;
- avctx->height = height;
- av_reduce(
- &avctx->frame_rate,
- &avctx->frame_rate_base,
- frame_rate_tab[s->frame_rate_index],
- MPEG1_FRAME_RATE_BASE, //FIXME store in allready reduced form
- 1<<30
- );
- avctx->bit_rate = s->bit_rate;
-
- //get_format() or set_video(width,height,aspect,pix_fmt);
- //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 )
- avctx->idct_algo = FF_IDCT_SIMPLE;
+ s->width = width;
+ s->height = height;
- if (MPV_common_init(s) < 0)
- return -1;
- s1->mpeg_enc_ctx_allocated = 1;
- s->swap_uv = 0;//just in case vcr2 and mpeg2 stream have been concatinated
- }
-
- skip_bits(&s->gb, 10); /* vbv_buffer_size */
+ 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);
- j = s->intra_scantable.permutated[i];
+ 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->intra_scantable.permutated[i]]);
+ dprintf(" %d", s->intra_matrix[s->dsp.idct_permutation[i]]);
printf("\n");
#endif
} else {
for(i=0;i<64;i++) {
- int j= s->dsp.idct_permutation[i];
+ j = s->dsp.idct_permutation[i];
v = ff_mpeg1_default_intra_matrix[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->intra_scantable.permutated[i];
+ 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->intra_scantable.permutated[i]]);
+ dprintf(" %d", s->inter_matrix[s->dsp.idct_permutation[i]]);
printf("\n");
#endif
} else {
}
}
+ 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 */
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_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)
+ av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d\n",
+ s->avctx->rc_buffer_size, s->bit_rate);
+
return 0;
}
if (s1->mpeg_enc_ctx_allocated) {
MPV_common_end(s);
}
- s->width = avctx->width;
- s->height = avctx->height;
+ s->width = avctx->coded_width;
+ s->height = avctx->coded_height;
avctx->has_b_frames= 0; //true?
s->low_delay= 1;
- s->avctx = avctx;
- //get_format() or set_video(width,height,aspect,pix_fmt);
- //until then pix_fmt may be changed right after codec init
+ 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);
+ }
+
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++) {
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 */
return 0;
}
-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,
+ 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);
+
+ 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);
+
+ /*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);
+}
/**
* finds the end of the current frame in the bitstream.
* @return the position of the first byte of the next frame, or -1
*/
-static int mpeg1_find_frame_end(MpegEncContext *s, uint8_t *buf, int buf_size){
- ParseContext *pc= &s->parse_context;
+int ff_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;
- uint8_t *buf_end, *buf_ptr;
+ const uint8_t *buf_end;
+ const uint8_t *buf_ptr;
int ret, start_code, input_size;
AVFrame *picture = data;
MpegEncContext *s2 = &s->mpeg_enc_ctx;
dprintf("fill_buffer\n");
- *data_size = 0;
-
- /* special case for last picture */
- if (buf_size == 0 && s2->low_delay==0 && s2->next_picture_ptr) {
- *picture= *(AVFrame*)s2->next_picture_ptr;
- s2->next_picture_ptr= NULL;
+ 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;
- *data_size = sizeof(AVFrame);
+ *data_size = sizeof(AVFrame);
+ }
return 0;
}
if(s2->flags&CODEC_FLAG_TRUNCATED){
- int next= mpeg1_find_frame_end(s2, buf, buf_size);
-
- if( ff_combine_frame(s2, next, &buf, &buf_size) < 0 )
+ int next= ff_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);
+ start_code = -1;
+ buf_ptr = ff_find_start_code(buf_ptr,buf_end, &start_code);
if (start_code < 0){
- if(s2->pict_type != B_TYPE || avctx->hurry_up==0){
+ if(s2->pict_type != B_TYPE || avctx->skip_frame <= AVDISCARD_DEFAULT){
+ if(avctx->thread_count > 1){
+ 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++)
+ s2->error_count += s2->thread_context[i]->error_count;
+ }
if (slice_end(avctx, picture)) {
if(s2->last_picture_ptr || s2->low_delay) //FIXME merge with the stuff in mpeg_decode_slice
*data_size = sizeof(AVPicture);
}
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 %d left %d\n", start_code, buf_ptr-buf, input_size);
+ 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,
+ 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,
+ mpeg1_decode_picture(avctx,
buf_ptr, input_size);
break;
case EXT_START_CODE:
buf_ptr, input_size);
break;
case USER_START_CODE:
- mpeg_decode_user_data(avctx,
+ 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->last_picture_ptr==NULL && s2->pict_type==B_TYPE) break;
+ 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_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;
- ret = mpeg_decode_slice(avctx, picture,
- start_code, &buf_ptr, input_size);
- emms_c();
+ 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];
- 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);
- if(ret==DECODE_SLICE_FATAL_ERROR) return -1;
+ 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{
- 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);
+ 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;
NULL,
mpeg_decode_end,
mpeg_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED,
+ CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
.flush= ff_mpeg_flush,
};
NULL,
mpeg_decode_end,
mpeg_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED,
+ CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
.flush= ff_mpeg_flush,
};
NULL,
mpeg_decode_end,
mpeg_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED,
+ 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= frame_rate_tab+1,
+ .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
+ .capabilities= CODEC_CAP_DELAY,
+};
+
+AVCodec mpeg2video_encoder = {
+ "mpeg2video",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_MPEG2VIDEO,
+ sizeof(MpegEncContext),
+ encode_init,
+ MPV_encode_picture,
+ MPV_encode_end,
+ .supported_framerates= frame_rate_tab+1,
+ .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
+ .capabilities= CODEC_CAP_DELAY,
+};
+#endif
+
#ifdef HAVE_XVMC
static int mpeg_mc_decode_init(AVCodecContext *avctx){
Mpeg1Context *s;
+ if( avctx->thread_count > 1)
+ return -1;
if( !(avctx->slice_flags & SLICE_FLAG_CODED_ORDER) )
return -1;
if( !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD) ){
NULL,
mpeg_decode_end,
mpeg_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED,
+ CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED| CODEC_CAP_HWACCEL | CODEC_CAP_DELAY,
+ .flush= ff_mpeg_flush,
};
#endif
-/* this is ugly i know, but the alternative is too make
+/* 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