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mpeg4videodec: move t_frame from MpegEncContext to Mpeg4DecContext

This commit is contained in:
Anton Khirnov 2013-11-26 14:34:52 +01:00
parent 0388907400
commit b1aacd5668
3 changed files with 11 additions and 10 deletions
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2
libavcodec/mpeg4video.h
View File

@ -70,6 +70,8 @@ typedef struct Mpeg4DecContext {
int rvlc;
///< could this stream contain resync markers
int resync_marker;
///< time distance of first I -> B, used for interlaced b frames
int t_frame;
/* bug workarounds */
int divx_version;

18
libavcodec/mpeg4videodec.c
View File

@ -1736,7 +1736,7 @@ static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
else
s->avctx->time_base.num = 1;
s->t_frame = 0;
ctx->t_frame = 0;
if (ctx->shape != BIN_ONLY_SHAPE) {
if (ctx->shape == RECT_SHAPE) {
@ -2123,14 +2123,14 @@ static int decode_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb)
}
ff_mpeg4_init_direct_mv(s);
if (s->t_frame == 0)
s->t_frame = s->pb_time;
if (s->t_frame == 0)
s->t_frame = 1; // 1/0 protection
s->pp_field_time = (ROUNDED_DIV(s->last_non_b_time, s->t_frame) -
ROUNDED_DIV(s->last_non_b_time - s->pp_time, s->t_frame)) * 2;
s->pb_field_time = (ROUNDED_DIV(s->time, s->t_frame) -
ROUNDED_DIV(s->last_non_b_time - s->pp_time, s->t_frame)) * 2;
if (ctx->t_frame == 0)
ctx->t_frame = s->pb_time;
if (ctx->t_frame == 0)
ctx->t_frame = 1; // 1/0 protection
s->pp_field_time = (ROUNDED_DIV(s->last_non_b_time, ctx->t_frame) -
ROUNDED_DIV(s->last_non_b_time - s->pp_time, ctx->t_frame)) * 2;
s->pb_field_time = (ROUNDED_DIV(s->time, ctx->t_frame) -
ROUNDED_DIV(s->last_non_b_time - s->pp_time, ctx->t_frame)) * 2;
if (!s->progressive_sequence) {
if (s->pp_field_time <= s->pb_field_time || s->pb_field_time <= 1)
return FRAME_SKIPPED;

1
libavcodec/mpegvideo.h
View File

@ -607,7 +607,6 @@ typedef struct MpegEncContext {
PutBitContext tex_pb; ///< used for data partitioned VOPs
PutBitContext pb2; ///< used for data partitioned VOPs
int mpeg_quant;
int t_frame; ///< time distance of first I -> B, used for interlaced b frames
int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
/* divx specific, used to workaround (many) bugs in divx5 */