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h264: Integrate draw_horiz_band into ff_h264_draw_horiz_band

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This makes the decoder independent of mpegvideo.

This copy of the draw_horiz_band code is simplified compared to
the "generic" mpegvideo one which still has a number of special
cases for different codecs.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Ronald S. Bultje 2013-03-02 11:22:02 -08:00 committed by Martin Storsjö
parent 70762508ec
commit 64e4386974
2 changed files with 42 additions and 6 deletions
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4
configure vendored
View File

@ -1542,7 +1542,7 @@ h263_decoder_select="error_resilience h263_parser mpegvideo"
h263_encoder_select="aandcttables error_resilience mpegvideoenc"
h263i_decoder_select="h263_decoder"
h263p_encoder_select="h263_encoder"
h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel videodsp"
huffyuv_encoder_select="huffman"
iac_decoder_select="fft mdct sinewin"
imc_decoder_select="fft mdct sinewin"
@ -1689,7 +1689,7 @@ wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
# parsers
h264_parser_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
h264_parser_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel videodsp"
mpeg4video_parser_select="error_resilience mpegvideo"
mpegvideo_parser_select="error_resilience mpegvideo"
vc1_parser_select="error_resilience mpegvideo"

44
libavcodec/h264.c
View File

@ -123,10 +123,46 @@ static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
void ff_h264_draw_horiz_band(H264Context *h, int y, int height)
{
ff_draw_horiz_band(h->avctx, NULL, &h->cur_pic,
h->ref_list[0][0].f.data[0] ? &h->ref_list[0][0] : NULL,
y, height, h->picture_structure, h->first_field, 0,
h->low_delay, h->mb_height * 16, h->mb_width * 16);
AVCodecContext *avctx = h->avctx;
Picture *cur = &h->cur_pic;
Picture *last = h->ref_list[0][0].f.data[0] ? &h->ref_list[0][0] : NULL;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
int vshift = desc->log2_chroma_h;
const int field_pic = h->picture_structure != PICT_FRAME;
if (field_pic) {
height <<= 1;
y <<= 1;
}
height = FFMIN(height, avctx->height - y);
if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD))
return;
if (avctx->draw_horiz_band) {
AVFrame *src;
int offset[AV_NUM_DATA_POINTERS];
int i;
if (cur->f.pict_type == AV_PICTURE_TYPE_B || h->low_delay ||
(avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
src = &cur->f;
else if (last)
src = &last->f;
else
return;
offset[0] = y * src->linesize[0];
offset[1] =
offset[2] = (y >> vshift) * src->linesize[1];
for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
offset[i] = 0;
emms_c();
avctx->draw_horiz_band(avctx, src, offset,
y, h->picture_structure, height);
}
}
static void free_frame_buffer(H264Context *h, Picture *pic)