*/
/**
- * @file libavcodec/mpeg12.c
+ * @file
* MPEG-1/2 decoder
*/
{
s->y_dc_scale_table=
- s->c_dc_scale_table= mpeg2_dc_scale_table[s->intra_dc_precision];
+ s->c_dc_scale_table= ff_mpeg2_dc_scale_table[s->intra_dc_precision];
}
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 */
+ AVPanScan pan_scan; /**< some temporary storage for the panscan */
int slice_count;
int swap_uv;//indicate VCR2
int save_aspect_info;
w= get_bits(&s->gb, 14);
skip_bits(&s->gb, 1); //marker
h= get_bits(&s->gb, 14);
- skip_bits(&s->gb, 1); //marker
+ // remaining 3 bits are zero padding
s1->pan_scan.width= 16*w;
s1->pan_scan.height=16*h;
s->picture_structure= PICT_FRAME;
}
- if(s->progressive_frame && !s->frame_pred_frame_dct){
+ if(s->progressive_sequence && !s->frame_pred_frame_dct){
av_log(s->avctx, AV_LOG_ERROR, "invalid frame_pred_frame_dct\n");
s->frame_pred_frame_dct= 1;
}
if(mb_y==0 && s->codec_tag == AV_RL32("SLIF")){
skip_bits1(&s->gb);
}else{
- for(;;) {
- int code = get_vlc2(&s->gb, mbincr_vlc.table, MBINCR_VLC_BITS, 2);
- if (code < 0){
- av_log(s->avctx, AV_LOG_ERROR, "first mb_incr damaged\n");
- return -1;
- }
- if (code >= 33) {
- if (code == 33) {
- s->mb_x += 33;
+ for(;;) {
+ int code = get_vlc2(&s->gb, mbincr_vlc.table, MBINCR_VLC_BITS, 2);
+ if (code < 0){
+ av_log(s->avctx, AV_LOG_ERROR, "first mb_incr damaged\n");
+ return -1;
+ }
+ if (code >= 33) {
+ if (code == 33) {
+ s->mb_x += 33;
+ }
+ /* otherwise, stuffing, nothing to do */
+ } else {
+ s->mb_x += code;
+ break;
}
- /* otherwise, stuffing, nothing to do */
- } else {
- s->mb_x += code;
- break;
}
}
- }
if(s->mb_x >= (unsigned)s->mb_width){
av_log(s->avctx, AV_LOG_ERROR, "initial skip overflow\n");
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 = s->b8_stride;
int xy = s->mb_x*2 + s->mb_y*2*wrap;
+ int b8_xy= 4*(s->mb_x + s->mb_y*s->mb_stride);
int motion_x, motion_y, dir, i;
for(i=0; i<2; i++){
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];
+ s->current_picture.ref_index [dir][b8_xy ]=
+ s->current_picture.ref_index [dir][b8_xy + 1]= s->field_select[dir][i];
assert(s->field_select[dir][i]==0 || s->field_select[dir][i]==1);
}
xy += wrap;
+ b8_xy +=2;
}
}
}
/**
- * Handles slice ends.
+ * Handle slice ends.
* @return 1 if it seems to be the last slice
*/
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
s->chroma_format = 1;
s->codec_id= s->avctx->codec_id= CODEC_ID_MPEG2VIDEO;
avctx->sub_id = 2; /* indicates MPEG-2 */
+ s1->save_width = s->width;
+ s1->save_height = s->height;
+ s1->save_progressive_seq = s->progressive_sequence;
return 0;
}
time_code_pictures, s->closed_gop, broken_link);
}
/**
- * Finds the end of the current frame in the bitstream.
+ * Find the end of the current frame in the bitstream.
* @return the position of the first byte of the next frame, or -1
*/
int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s)
return i-3;
}
}
- if(s && state == PICTURE_START_CODE){
+ if(pc->frame_start_found == 0 && s && state == PICTURE_START_CODE){
ff_fetch_timestamp(s, i-3, 1);
}
}
AVCodec mpeg1video_decoder = {
"mpeg1video",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_MPEG1VIDEO,
sizeof(Mpeg1Context),
mpeg_decode_init,
mpeg_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
.flush= flush,
+ .max_lowres= 3,
.long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"),
};
AVCodec mpeg2video_decoder = {
"mpeg2video",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_MPEG2VIDEO,
sizeof(Mpeg1Context),
mpeg_decode_init,
mpeg_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
.flush= flush,
+ .max_lowres= 3,
.long_name= NULL_IF_CONFIG_SMALL("MPEG-2 video"),
};
//legacy decoder
AVCodec mpegvideo_decoder = {
"mpegvideo",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_MPEG2VIDEO,
sizeof(Mpeg1Context),
mpeg_decode_init,
mpeg_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
.flush= flush,
+ .max_lowres= 3,
.long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"),
};
AVCodec mpeg_xvmc_decoder = {
"mpegvideo_xvmc",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_MPEG2VIDEO_XVMC,
sizeof(Mpeg1Context),
mpeg_mc_decode_init,
#if CONFIG_MPEG_VDPAU_DECODER
AVCodec mpeg_vdpau_decoder = {
"mpegvideo_vdpau",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_MPEG2VIDEO,
sizeof(Mpeg1Context),
mpeg_decode_init,
#if CONFIG_MPEG1_VDPAU_DECODER
AVCodec mpeg1_vdpau_decoder = {
"mpeg1video_vdpau",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_MPEG1VIDEO,
sizeof(Mpeg1Context),
mpeg_decode_init,