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ffmpeg.wasm-core
Commit f9059ce7 authored by Michael Niedermayer's avatar Michael Niedermayer
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avcodec/mjpegdec: upgrade upscale_h to support multiple planes 

Signed-off-by: 's avatarMichael Niedermayer <michaelni@gmx.at>
parent 1b28d9b3
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Showing with 14 additions and 9 deletions
libavcodec/mjpegdec.c
View file @ f9059ce7
......@@ -415,7 +415,7 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
goto unk_pixfmt;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
s->upscale_v = 2;
s->upscale_h = (pix_fmt_id == 0x22122100);
s->upscale_h = 2*(pix_fmt_id == 0x22122100);
s->chroma_height = s->height;
break;
case 0x21211100:
......@@ -425,7 +425,7 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
goto unk_pixfmt;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
s->upscale_v = (pix_fmt_id == 0x22211200);
s->upscale_h = 2;
s->upscale_h = 4;
s->chroma_height = s->height;
break;
case 0x22221100:
......@@ -434,7 +434,7 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
goto unk_pixfmt;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
s->upscale_v = 2;
s->upscale_h = 2;
s->upscale_h = 4;
s->chroma_height = s->height / 2;
break;
case 0x11000000:
......@@ -458,7 +458,7 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
else
goto unk_pixfmt;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
s->upscale_h = (pix_fmt_id == 0x22211100) * 2 + (pix_fmt_id == 0x22112100);
s->upscale_h = 4 * (pix_fmt_id == 0x22211100) + 2 * (pix_fmt_id == 0x22112100);
s->chroma_height = s->height / 2;
break;
case 0x21111100:
......@@ -2035,15 +2035,20 @@ fail:
return ret;
the_end:
if (s->upscale_h) {
uint8_t *line = s->picture_ptr->data[s->upscale_h];
int p;
av_assert0(avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
avctx->pix_fmt == AV_PIX_FMT_YUV444P ||
avctx->pix_fmt == AV_PIX_FMT_YUVJ440P ||
avctx->pix_fmt == AV_PIX_FMT_YUV440P);
for (p = 1; p<4; p++) {
uint8_t *line = s->picture_ptr->data[p];
if (!(s->upscale_h & (1<<p)))
continue;
for (i = 0; i < s->chroma_height; i++) {
for (index = s->width - 1; index; index--)
line[index] = (line[index / 2] + line[(index + 1) / 2]) >> 1;
line += s->linesize[s->upscale_h];
line += s->linesize[p];
}
}
}
if (s->upscale_v) {
......
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