#define MB_PTYPE_VLC_BITS 6
#define MB_BTYPE_VLC_BITS 6
+static inline int mpeg1_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
+ int n);
static inline int mpeg1_decode_block_inter(MpegEncContext *s,
DCTELEM *block,
int n);
}
} else {
for(i=0;i<6;i++) {
- if (ff_mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0)
+ if (mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0)
return -1;
}
}
return val;
}
-inline int ff_mpeg1_decode_block_intra(MpegEncContext *s,
+static inline int mpeg1_decode_block_intra(MpegEncContext *s,
DCTELEM *block,
int n)
{
return 0;
}
+int ff_mpeg1_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
+ int n)
+{
+ return mpeg1_decode_block_intra(s, block, n);
+}
+
static inline int mpeg1_decode_block_inter(MpegEncContext *s,
DCTELEM *block,
int n)
int slice_count;
int swap_uv;//indicate VCR2
int save_aspect_info;
- int save_width, save_height;
+ int save_width, save_height, save_progressive_seq;
AVRational frame_rate_ext; ///< MPEG-2 specific framerate modificator
} Mpeg1Context;
s->mpeg_enc_ctx.picture_number = 0;
s->repeat_field = 0;
s->mpeg_enc_ctx.codec_id= avctx->codec->id;
+ avctx->color_range= AVCOL_RANGE_MPEG;
+ if (avctx->codec->id == CODEC_ID_MPEG1VIDEO)
+ avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
+ else
+ avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
return 0;
}
s1->save_width != s->width ||
s1->save_height != s->height ||
s1->save_aspect_info != s->aspect_ratio_info||
+ s1->save_progressive_seq != s->progressive_sequence ||
0)
{
s1->save_aspect_info = s->aspect_ratio_info;
s1->save_width = s->width;
s1->save_height = s->height;
+ s1->save_progressive_seq = s->progressive_sequence;
/* low_delay may be forced, in this case we will have B-frames
* that behave like P-frames. */
skip_bits(&s->gb, 3); /* video format */
color_description= get_bits1(&s->gb);
if(color_description){
- skip_bits(&s->gb, 8); /* color primaries */
- skip_bits(&s->gb, 8); /* transfer_characteristics */
- skip_bits(&s->gb, 8); /* matrix_coefficients */
+ s->avctx->color_primaries= get_bits(&s->gb, 8);
+ s->avctx->color_trc = get_bits(&s->gb, 8);
+ s->avctx->colorspace = get_bits(&s->gb, 8);
}
w= get_bits(&s->gb, 14);
skip_bits(&s->gb, 1); //marker
);
}
-static void mpeg_decode_quant_matrix_extension(MpegEncContext *s)
-{
- int i, v, j;
-
- dprintf(s->avctx, "matrix extension\n");
+static int load_matrix(MpegEncContext *s, uint16_t matrix0[64], uint16_t matrix1[64], int intra){
+ int i;
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->intra_matrix[j] = v;
- s->chroma_intra_matrix[j] = v;
- }
- }
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->inter_matrix[j] = v;
- s->chroma_inter_matrix[j] = v;
- }
- }
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->chroma_intra_matrix[j] = v;
+ for(i=0; i<64; i++) {
+ int j = s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
+ int v = get_bits(&s->gb, 8);
+ if(v==0){
+ av_log(s->avctx, AV_LOG_ERROR, "matrix damaged\n");
+ return -1;
}
- }
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->chroma_inter_matrix[j] = v;
+ if(intra && i==0 && v!=8){
+ av_log(s->avctx, AV_LOG_ERROR, "intra matrix invalid, ignoring\n");
+ v= 8; // needed by pink.mpg / issue1046
}
+ matrix0[j] = v;
+ if(matrix1)
+ matrix1[j] = v;
}
+ return 0;
+}
+
+static void mpeg_decode_quant_matrix_extension(MpegEncContext *s)
+{
+ dprintf(s->avctx, "matrix extension\n");
+
+ if(get_bits1(&s->gb)) load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1);
+ if(get_bits1(&s->gb)) load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0);
+ if(get_bits1(&s->gb)) load_matrix(s, s->chroma_intra_matrix, NULL , 1);
+ if(get_bits1(&s->gb)) load_matrix(s, s->chroma_inter_matrix, NULL , 0);
}
static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1)
/* get matrix */
if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- if(v==0){
- av_log(s->avctx, AV_LOG_ERROR, "intra matrix damaged\n");
- return -1;
- }
- j = s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->intra_matrix[j] = v;
- s->chroma_intra_matrix[j] = v;
- }
-#ifdef DEBUG
- dprintf(s->avctx, "intra matrix present\n");
- for(i=0;i<64;i++)
- dprintf(s->avctx, " %d", s->intra_matrix[s->dsp.idct_permutation[i]]);
- dprintf(s->avctx, "\n");
-#endif
+ load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1);
} else {
for(i=0;i<64;i++) {
j = s->dsp.idct_permutation[i];
}
}
if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- if(v==0){
- av_log(s->avctx, AV_LOG_ERROR, "inter matrix damaged\n");
- return -1;
- }
- j = s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->inter_matrix[j] = v;
- s->chroma_inter_matrix[j] = v;
- }
-#ifdef DEBUG
- dprintf(s->avctx, "non-intra matrix present\n");
- for(i=0;i<64;i++)
- dprintf(s->avctx, " %d", s->inter_matrix[s->dsp.idct_permutation[i]]);
- dprintf(s->avctx, "\n");
-#endif
+ load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0);
} else {
for(i=0;i<64;i++) {
int j= s->dsp.idct_permutation[i];
int drop_frame_flag;
int time_code_hours, time_code_minutes;
int time_code_seconds, time_code_pictures;
- int closed_gop, broken_link;
+ int broken_link;
init_get_bits(&s->gb, buf, buf_size*8);
time_code_seconds = get_bits(&s->gb,6);
time_code_pictures = get_bits(&s->gb,6);
- closed_gop = get_bits1(&s->gb);
+ s->closed_gop = get_bits1(&s->gb);
/*broken_link indicate that after editing the
reference frames of the first B-Frames after GOP I-Frame
are missing (open gop)*/
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG, "GOP (%2d:%02d:%02d.[%02d]) closed_gop=%d broken_link=%d\n",
time_code_hours, time_code_minutes, time_code_seconds,
- time_code_pictures, closed_gop, broken_link);
+ time_code_pictures, s->closed_gop, broken_link);
}
/**
* Finds the end of the current frame in the bitstream.
}
}
if(s && state == PICTURE_START_CODE){
- ff_fetch_timestamp(s, i-4, 1);
+ ff_fetch_timestamp(s, i-3, 1);
}
}
}
/* handle buffering and image synchronisation */
static int mpeg_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
Mpeg1Context *s = avctx->priv_data;
AVFrame *picture = data;
MpegEncContext *s2 = &s->mpeg_enc_ctx;
int mb_y= start_code - SLICE_MIN_START_CODE;
if(s2->last_picture_ptr==NULL){
- /* Skip B-frames if we do not have reference frames. */
- if(s2->pict_type==FF_B_TYPE) break;
+ /* Skip B-frames if we do not have reference frames and gop is not closed */
+ if(s2->pict_type==FF_B_TYPE){
+ int i;
+ if(!s2->closed_gop)
+ break;
+ /* Allocate a dummy frame */
+ i= ff_find_unused_picture(s2, 0);
+ s2->last_picture_ptr= &s2->picture[i];
+ if(ff_alloc_picture(s2, s2->last_picture_ptr, 0) < 0)
+ return -1;
+ }
}
if(s2->next_picture_ptr==NULL){
/* Skip P-frames if we do not have a reference frame or we have an invalid header. */
projects / ffmpeg / blobdiff