diff options
Diffstat (limited to 'libavcodec/mpeg4videodec.c')
| -rw-r--r-- | libavcodec/mpeg4videodec.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c index c152b3c2f2..b293bada32 100644 --- a/libavcodec/mpeg4videodec.c +++ b/libavcodec/mpeg4videodec.c @@ -23,6 +23,7 @@ #include "mpegvideo.h" #include "mpeg4video.h" #include "h263.h" +#include "thread.h" // The defines below define the number of bits that are read at once for // reading vlc values. Changing these may improve speed and data cache needs @@ -373,7 +374,13 @@ int mpeg4_decode_video_packet_header(MpegEncContext *s) return -1; } if(s->pict_type == FF_B_TYPE){ - while(s->next_picture.mbskip_table[ s->mb_index2xy[ mb_num ] ]) mb_num++; + int mb_x = 0, mb_y = 0; + + while(s->next_picture.mbskip_table[ s->mb_index2xy[ mb_num ] ]) { + if (!mb_x) ff_thread_await_progress((AVFrame*)s->next_picture_ptr, mb_y++, 0); + mb_num++; + if (++mb_x == s->mb_width) mb_x = 0; + } if(mb_num >= s->mb_num) return -1; // slice contains just skipped MBs which where already decoded } @@ -1303,6 +1310,8 @@ static int mpeg4_decode_mb(MpegEncContext *s, s->last_mv[i][1][0]= s->last_mv[i][1][1]= 0; } + + ff_thread_await_progress((AVFrame*)s->next_picture_ptr, s->mb_y, 0); } /* if we skipped it in the future P Frame than skip it now too */ @@ -1482,6 +1491,12 @@ end: if(s->codec_id==CODEC_ID_MPEG4){ if(mpeg4_is_resync(s)){ const int delta= s->mb_x + 1 == s->mb_width ? 2 : 1; + + if(s->pict_type==FF_B_TYPE){ + ff_thread_await_progress((AVFrame*)s->next_picture_ptr, + (s->mb_x + delta >= s->mb_width) ? FFMIN(s->mb_y+1, s->mb_height-1) : s->mb_y, 0); + } + if(s->pict_type==FF_B_TYPE && s->next_picture.mbskip_table[xy + delta]) return SLICE_OK; return SLICE_END; @@ -2239,11 +2254,12 @@ AVCodec ff_mpeg4_decoder = { NULL, ff_h263_decode_end, ff_h263_decode_frame, - CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY, + CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_FRAME_THREADS, .flush= ff_mpeg_flush, .max_lowres= 3, .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2"), .pix_fmts= ff_hwaccel_pixfmt_list_420, + .update_thread_context= ONLY_IF_THREADS_ENABLED(ff_mpeg_update_thread_context) }; |