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pngenc: write sample aspect ratio

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
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Paul B Mahol
2012-10-13 09:26:09 +00:00
parent 8288c2b6cb
commit f58f90238f
2 changed files with 11 additions and 6 deletions
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5
libavcodec/pngenc.c
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@@ -335,6 +335,11 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
png_write_chunk(&s->bytestream, MKTAG('I', 'H', 'D', 'R'), s->buf, 13);
AV_WB32(s->buf, avctx->sample_aspect_ratio.num);
AV_WB32(s->buf + 4, avctx->sample_aspect_ratio.den);
s->buf[8] = 0; /* unit specifier is unknown */
png_write_chunk(&s->bytestream, MKTAG('p', 'H', 'Y', 's'), s->buf, 9);
/* put the palette if needed */
if (color_type == PNG_COLOR_TYPE_PALETTE) {
int has_alpha, alpha, i;