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Code Issues Releases Activity

avcodec/diracdec: allocate edges internally instead of depending on CODEC_FLAG_EMU_EDGE being not set

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2014-01-20 17:52:08 +01:00
parent d83707c641
commit 7c6cf689d8
1 changed files with 25 additions and 7 deletions
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32
libavcodec/diracdec.c
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@@ -398,11 +398,6 @@ static av_cold int dirac_decode_init(AVCodecContext *avctx)
s->avctx = avctx;
s->frame_number = -1;
if (avctx->flags&CODEC_FLAG_EMU_EDGE) {
av_log(avctx, AV_LOG_ERROR, "Edge emulation not supported!\n");
return AVERROR_PATCHWELCOME;
}
ff_dsputil_init(&s->dsp, avctx);
ff_diracdsp_init(&s->diracdsp);
@@ -1646,6 +1641,29 @@ static int dirac_decode_frame_internal(DiracContext *s)
return 0;
}
static int get_buffer_with_edge(AVCodecContext *avctx, AVFrame *f, int flags)
{
int ret, i;
int chroma_x_shift, chroma_y_shift;
avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_x_shift, &chroma_y_shift);
f->width = avctx->width + 2 * EDGE_WIDTH;
f->height = avctx->height + 2 * EDGE_WIDTH + 2;
ret = ff_get_buffer(avctx, f, flags);
if (ret < 0)
return ret;
for (i = 0; f->data[i]; i++) {
int offset = (EDGE_WIDTH >> (i && i<3 ? chroma_y_shift : 0)) *
f->linesize[i] + 32;
f->data[i] += offset;
}
f->width = avctx->width;
f->height = avctx->height;
return 0;
}
/**
* Dirac Specification ->
* 11.1.1 Picture Header. picture_header()
@@ -1689,7 +1707,7 @@ static int dirac_decode_picture_header(DiracContext *s)
for (j = 0; j < MAX_FRAMES; j++)
if (!s->all_frames[j].avframe->data[0]) {
s->ref_pics[i] = &s->all_frames[j];
ff_get_buffer(s->avctx, s->ref_pics[i]->avframe, AV_GET_BUFFER_FLAG_REF);
get_buffer_with_edge(s->avctx, s->ref_pics[i]->avframe, AV_GET_BUFFER_FLAG_REF);
break;
}
}
@@ -1829,7 +1847,7 @@ static int dirac_decode_data_unit(AVCodecContext *avctx, const uint8_t *buf, int
pic->avframe->key_frame = s->num_refs == 0; /* [DIRAC_STD] is_intra() */
pic->avframe->pict_type = s->num_refs + 1; /* Definition of AVPictureType in avutil.h */
if ((ret = ff_get_buffer(avctx, pic->avframe, (parse_code & 0x0C) == 0x0C ? AV_GET_BUFFER_FLAG_REF : 0)) < 0)
if ((ret = get_buffer_with_edge(avctx, pic->avframe, (parse_code & 0x0C) == 0x0C ? AV_GET_BUFFER_FLAG_REF : 0)) < 0)
return ret;
s->current_picture = pic;
s->plane[0].stride = pic->avframe->linesize[0];