From: vacingfang <vacingf...@tencent.com>
support dvcC/dvcC box from spec Dolby Vision Streams Within the
ISO Base MediaFile Format Version 2.1.2
(https://www.dolby.com/in/en/technologies/dolby-vision/dolby-vision\
-bitstreams-within-the-iso-base-media-file-format-v2.1.2.pdf)
export the DOVI information to sidedata.
Signed-off-by: vacingfang <vacingf...@tencent.com>
---
libavformat/mov.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 52 insertions(+)
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 8e8aba7..eaf0c22 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -46,6 +46,7 @@
#include "libavutil/spherical.h"
#include "libavutil/stereo3d.h"
#include "libavutil/timecode.h"
+#include "libavutil/dovi_meta.h"
#include "libavcodec/ac3tab.h"
#include "libavcodec/flac.h"
#include "libavcodec/mpegaudiodecheader.h"
@@ -6786,6 +6787,55 @@ static int mov_read_dmlp(MOVContext *c, AVIOContext *pb,
MOVAtom atom)
return 0;
}
+static int mov_read_dvcc_dvvc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+ AVStream *st;
+ uint32_t buf;
+ AVDOVIDecoderConfigurationRecord *dovi;
+
+ if (c->fc->nb_streams < 1)
+ return 0;
+ st = c->fc->streams[c->fc->nb_streams-1];
+
+ if ((uint64_t)atom.size > (1<<30) || atom.size < 4)
+ return AVERROR_INVALIDDATA;
+
+ dovi = (AVDOVIDecoderConfigurationRecord *)av_stream_new_side_data(
+ st, AV_PKT_DATA_DOVI_CONF, sizeof(*dovi));
+ if (!dovi)
+ return AVERROR(ENOMEM);
+
+ dovi->dv_version_major = avio_r8(pb);
+ dovi->dv_version_minor = avio_r8(pb);
+
+ buf = avio_rb16(pb);
+ dovi->dv_profile = (buf >> 9) & 0x7f; // 7 bits
+ dovi->dv_level = (buf >> 3) & 0x3f; // 6 bits
+ dovi->rpu_present_flag = (buf >> 2) & 0x01; // 1 bit
+ dovi->el_present_flag = (buf >> 1) & 0x01; // 1 bit
+ dovi->bl_present_flag = buf & 0x01; // 1 bit
+ if (atom.size >= 24) { // 4 + 4 + 4 * 4
+ buf = avio_r8(pb);
+ dovi->dv_bl_signal_compatibility_id = (buf >> 4) & 0x0f; // 4 bits
+ } else {
+ // 0 stands for None
+ // Dolby Vision V1.2.93 profiles and levels
+ dovi->dv_bl_signal_compatibility_id = 0;
+ }
+
+ av_log(c, AV_LOG_TRACE, "DOVI in dvcC/dvvC box, version: %d.%d, profile:
%d, level: %d, "
+ "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n",
+ dovi->dv_version_major, dovi->dv_version_minor,
+ dovi->dv_profile, dovi->dv_level,
+ dovi->rpu_present_flag,
+ dovi->el_present_flag,
+ dovi->bl_present_flag,
+ dovi->dv_bl_signal_compatibility_id
+ );
+
+ return 0;
+}
+
static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG('A','C','L','R'), mov_read_aclr },
{ MKTAG('A','P','R','G'), mov_read_avid },
@@ -6881,6 +6931,8 @@ static const MOVParseTableEntry mov_default_parse_table[]
= {
{ MKTAG('v','p','c','C'), mov_read_vpcc },
{ MKTAG('m','d','c','v'), mov_read_mdcv },
{ MKTAG('c','l','l','i'), mov_read_clli },
+{ MKTAG('d','v','c','C'), mov_read_dvcc_dvvc },
+{ MKTAG('d','v','v','C'), mov_read_dvcc_dvvc },
{ 0, NULL }
};
--
2.7.4
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