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Code Issues Releases Activity

avformat/mov: add support for reading Content Light Level Box

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As defined in "VP Codec ISO Media File Format Binding v1.0"
https://github.com/webmproject/vp9-dash/blob/master/VPCodecISOMediaFileFormatBinding.md

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2017-04-22 00:34:37 -03:00
parent ab05bd6e6c
commit 24133973fc
2 changed files with 45 additions and 0 deletions
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2
libavformat/isom.h
View File

@ -196,6 +196,8 @@ typedef struct MOVStreamContext {
AVSphericalMapping *spherical;
size_t spherical_size;
AVMasteringDisplayMetadata *mastering;
AVContentLightMetadata *coll;
size_t coll_size;
uint32_t format;

43
libavformat/mov.c
View File

@ -4658,6 +4658,38 @@ static int mov_read_smdm(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return 0;
}
static int mov_read_coll(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
MOVStreamContext *sc;
int version;
if (c->fc->nb_streams < 1)
return AVERROR_INVALIDDATA;
sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
if (atom.size < 5) {
av_log(c->fc, AV_LOG_ERROR, "Empty Content Light Level box\n");
return AVERROR_INVALIDDATA;
}
version = avio_r8(pb);
if (version) {
av_log(c->fc, AV_LOG_WARNING, "Unsupported Content Light Level box version %d\n", version);
return 0;
}
avio_skip(pb, 3); /* flags */
sc->coll = av_content_light_metadata_alloc(&sc->coll_size);
if (!sc->coll)
return AVERROR(ENOMEM);
sc->coll->MaxCLL = avio_rb16(pb);
sc->coll->MaxFALL = avio_rb16(pb);
return 0;
}
static int mov_read_st3d(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
AVStream *st;
@ -5445,6 +5477,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG('s','v','3','d'), mov_read_sv3d }, /* spherical video box */
{ MKTAG('d','O','p','s'), mov_read_dops },
{ MKTAG('S','m','D','m'), mov_read_smdm },
{ MKTAG('C','o','L','L'), mov_read_coll },
{ 0, NULL }
};
@ -5870,6 +5903,7 @@ static int mov_read_close(AVFormatContext *s)
av_freep(&sc->stereo3d);
av_freep(&sc->spherical);
av_freep(&sc->mastering);
av_freep(&sc->coll);
}
if (mov->dv_demux) {
@ -6229,6 +6263,15 @@ static int mov_read_header(AVFormatContext *s)
sc->mastering = NULL;
}
if (sc->coll) {
err = av_stream_add_side_data(st, AV_PKT_DATA_CONTENT_LIGHT_LEVEL,
(uint8_t *)sc->coll,
sc->coll_size);
if (err < 0)
return err;
sc->coll = NULL;
}
break;
}
}