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mpeg4videodec: move intra_dc_threshold from MpegEncContext to Mpeg4DecContext

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This commit is contained in:
Anton Khirnov 2013-11-29 22:26:15 +01:00
parent a097f0049b
commit f7d228676c
4 changed files with 8 additions and 7 deletions
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2
libavcodec/mpeg4video.h
View File

@ -84,6 +84,8 @@ typedef struct Mpeg4DecContext {
int enhancement_type;
int scalability;
int use_intra_dc_vlc;
///< QP above whch the ac VLC should be used for intra dc
int intra_dc_threshold;
/* bug workarounds */
int divx_version;

8
libavcodec/mpeg4videodec.c
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@ -1179,7 +1179,7 @@ static int mpeg4_decode_partitioned_mb(MpegEncContext *s, int16_t block[6][64])
mb_type = s->current_picture.mb_type[xy];
cbp = s->cbp_table[xy];
ctx->use_intra_dc_vlc = s->qscale < s->intra_dc_threshold;
ctx->use_intra_dc_vlc = s->qscale < ctx->intra_dc_threshold;
if (s->current_picture.qscale_table[xy] != s->qscale)
ff_set_qscale(s, s->current_picture.qscale_table[xy]);
@ -1577,7 +1577,7 @@ intra:
}
cbp = (cbpc & 3) | (cbpy << 2);
ctx->use_intra_dc_vlc = s->qscale < s->intra_dc_threshold;
ctx->use_intra_dc_vlc = s->qscale < ctx->intra_dc_threshold;
if (dquant)
ff_set_qscale(s, s->qscale + quant_tab[get_bits(&s->gb, 2)]);
@ -2180,7 +2180,7 @@ static int decode_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb)
if (s->pict_type == AV_PICTURE_TYPE_B)
skip_bits_long(gb, ctx->cplx_estimation_trash_b);
s->intra_dc_threshold = ff_mpeg4_dc_threshold[get_bits(gb, 3)];
ctx->intra_dc_threshold = ff_mpeg4_dc_threshold[get_bits(gb, 3)];
if (!s->progressive_sequence) {
s->top_field_first = get_bits1(gb);
s->alternate_scan = get_bits1(gb);
@ -2245,7 +2245,7 @@ static int decode_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb)
s->data_partitioning, ctx->resync_marker,
ctx->num_sprite_warping_points, s->sprite_warping_accuracy,
1 - s->no_rounding, s->vo_type,
s->vol_control_parameters ? " VOLC" : " ", s->intra_dc_threshold,
s->vol_control_parameters ? " VOLC" : " ", ctx->intra_dc_threshold,
ctx->cplx_estimation_trash_i, ctx->cplx_estimation_trash_p,
ctx->cplx_estimation_trash_b);
}

1
libavcodec/mpegvideo.h
View File

@ -592,7 +592,6 @@ typedef struct MpegEncContext {
int low_delay; ///< no reordering needed / has no b-frames
int vo_type;
int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
PutBitContext tex_pb; ///< used for data partitioned VOPs
PutBitContext pb2; ///< used for data partitioned VOPs
int mpeg_quant;

4
libavcodec/vaapi_mpeg4.c
View File

@ -25,7 +25,7 @@
#include "mpeg4video.h"
/** Reconstruct bitstream intra_dc_vlc_thr */
static int mpeg4_get_intra_dc_vlc_thr(MpegEncContext *s)
static int mpeg4_get_intra_dc_vlc_thr(Mpeg4DecContext *s)
{
switch (s->intra_dc_threshold) {
case 99: return 0;
@ -83,7 +83,7 @@ static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_
pic_param->vop_fields.bits.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I;
pic_param->vop_fields.bits.backward_reference_vop_coding_type = s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f.pict_type - AV_PICTURE_TYPE_I : 0;
pic_param->vop_fields.bits.vop_rounding_type = s->no_rounding;
pic_param->vop_fields.bits.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(s);
pic_param->vop_fields.bits.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(ctx);
pic_param->vop_fields.bits.top_field_first = s->top_field_first;
pic_param->vop_fields.bits.alternate_vertical_scan_flag = s->alternate_scan;
pic_param->vop_fcode_forward = s->f_code;