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avcodec/webp: add support for ICCP chunks

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Export the raw data as ICC Profile frame side data.

Reviwed-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2017-07-26 01:28:35 -03:00
parent 5e4e9afaa1
commit c220fe008c
1 changed files with 24 additions and 2 deletions
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26
libavcodec/webp.c
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@ -33,10 +33,10 @@
*
* @author James Almer <jamrial@gmail.com>
* Exif metadata
* ICC profile
*
* Unimplemented:
* - Animation
* - ICC profile
* - XMP metadata
*/
@ -197,6 +197,7 @@ typedef struct WebPContext {
uint8_t *alpha_data; /* alpha chunk data */
int alpha_data_size; /* alpha chunk data size */
int has_exif; /* set after an EXIF chunk has been processed */
int has_iccp; /* set after an ICCP chunk has been processed */
int width; /* image width */
int height; /* image height */
int lossless; /* indicates lossless or lossy */
@ -1381,6 +1382,7 @@ static int webp_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
*got_frame = 0;
s->has_alpha = 0;
s->has_exif = 0;
s->has_iccp = 0;
bytestream2_init(&gb, avpkt->data, avpkt->size);
if (bytestream2_get_bytes_left(&gb) < 12)
@ -1514,7 +1516,27 @@ exif_end:
bytestream2_skip(&gb, chunk_size);
break;
}
case MKTAG('I', 'C', 'C', 'P'):
case MKTAG('I', 'C', 'C', 'P'): {
AVFrameSideData *sd;
if (s->has_iccp) {
av_log(avctx, AV_LOG_VERBOSE, "Ignoring extra ICCP chunk\n");
bytestream2_skip(&gb, chunk_size);
break;
}
if (!(vp8x_flags & VP8X_FLAG_ICC))
av_log(avctx, AV_LOG_WARNING,
"ICCP chunk present, but ICC Profile bit not set in the "
"VP8X header\n");
s->has_iccp = 1;
sd = av_frame_new_side_data(p, AV_FRAME_DATA_ICC_PROFILE, chunk_size);
if (!sd)
return AVERROR(ENOMEM);
bytestream2_get_buffer(&gb, sd->data, chunk_size);
break;
}
case MKTAG('A', 'N', 'I', 'M'):
case MKTAG('A', 'N', 'M', 'F'):
case MKTAG('X', 'M', 'P', ' '):