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avcodec: add avpriv_color_frame()

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-02-16 12:13:27 +01:00
parent af882e1819
commit a53b144ec0
2 changed files with 25 additions and 0 deletions
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3
libavcodec/internal.h
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@ -124,6 +124,9 @@ unsigned int avpriv_toupper4(unsigned int x);
*/
void ff_init_buffer_info(AVCodecContext *s, AVFrame *frame);
void avpriv_color_frame(AVFrame *frame, const int color[4]);
/**
* Remove and free all side data from packet.
*/

22
libavcodec/utils.c
View File

@ -501,6 +501,28 @@ static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
return 0;
}
void avpriv_color_frame(AVFrame *frame, const int c[4])
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
int p, y, x;
av_assert0(desc->flags & PIX_FMT_PLANAR);
for (p = 0; p<desc->nb_components; p++) {
uint8_t *dst = frame->data[p];
int is_chroma = p == 1 || p == 2;
int bytes = -((-frame->width) >> (is_chroma ? desc->log2_chroma_w : 0));
for (y = 0; y<-((-frame->height) >> (is_chroma ? desc->log2_chroma_h : 0)); y++){
if (desc->comp[0].depth_minus1 >= 8) {
for (x = 0; x<bytes; x++)
((uint16_t*)dst)[x] = c[p];
}else
memset(dst, c[p], bytes);
dst += frame->linesize[p];
}
}
}
int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
{
frame->type = FF_BUFFER_TYPE_INTERNAL;