These data are necessary when transmitting HDR over HDMI.
Signed-off-by: James Almer <[email protected]>
---
doc/APIchanges | 3 +++
libavcodec/avcodec.h | 7 +++++++
libavcodec/decode.c | 1 +
libavcodec/hevc_sei.c | 15 +++++++++++++++
libavcodec/hevcdec.c | 18 ++++++++++++++++++
libavcodec/hevcdec.h | 5 +++++
libavcodec/version.h | 4 ++--
7 files changed, 51 insertions(+), 2 deletions(-)
diff --git a/doc/APIchanges b/doc/APIchanges
index 4c35f727e6..ace50b2a3d 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -13,6 +13,9 @@ libavutil: 2017-03-23
API changes, most recent first:
+2016-04-06 - xxxxxxx - lavc 58.2.0 - avcodec.h
+ Add AV_PKT_DATA_CONTENT_LIGHT_LEVEL packet side data.
+
2016-04-xx - xxxxxxx - lavu 56.2.0 - mastering_display_metadata.h
Add AV_FRAME_DATA_CONTENT_LIGHT_LEVEL value,
av_content_light_metadata_alloc()
and av_content_light_metadata_create_side_data() API, and
AVContentLightMetadata
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index fc1f2a4dfc..1d41badea6 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1075,6 +1075,13 @@ enum AVPacketSideDataType {
* of the AVMasteringDisplayMetadata struct.
*/
AV_PKT_DATA_MASTERING_DISPLAY_METADATA,
+
+ /**
+ * Content light level (based on CTA-861.3). This metadata should be
+ * associated with a video stream and containts data in the form of the
+ * AVContentLightMetadata struct.
+ */
+ AV_PKT_DATA_CONTENT_LIGHT_LEVEL,
};
typedef struct AVPacketSideData {
diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 4a05b8d089..3ed5cc4fd6 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -1030,6 +1030,7 @@ int ff_decode_frame_props(AVCodecContext *avctx, AVFrame
*frame)
{ AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
{ AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
{ AV_PKT_DATA_MASTERING_DISPLAY_METADATA,
AV_FRAME_DATA_MASTERING_DISPLAY_METADATA },
+ { AV_PKT_DATA_CONTENT_LIGHT_LEVEL, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL },
};
frame->color_primaries = avctx->color_primaries;
diff --git a/libavcodec/hevc_sei.c b/libavcodec/hevc_sei.c
index 1105b51493..e41b8262bc 100644
--- a/libavcodec/hevc_sei.c
+++ b/libavcodec/hevc_sei.c
@@ -99,6 +99,19 @@ static int decode_nal_sei_mastering_display_info(HEVCContext
*s)
return 0;
}
+static int decode_nal_sei_content_light_info(HEVCContext *s)
+{
+ GetBitContext *gb = &s->HEVClc.gb;
+ // Max and average light levels
+ s->max_content_light_level = get_bits_long(gb, 16);
+ s->max_pic_average_light_level = get_bits_long(gb, 16);
+ // As this SEI message comes before the first frame that references it,
+ // initialize the flag to 2 and decrement on IRAP access unit so it
+ // persists for the coded video sequence (e.g., between two IRAPs)
+ s-> sei_content_light_present = 2;
+ return 0;
+}
+
static int decode_nal_sei_frame_packing_arrangement(HEVCContext *s)
{
GetBitContext *gb = &s->HEVClc.gb;
@@ -155,6 +168,8 @@ static int decode_nal_sei_prefix(HEVCContext *s, int type,
int size)
return decode_nal_sei_display_orientation(s);
case SEI_TYPE_MASTERING_DISPLAY_INFO:
return decode_nal_sei_mastering_display_info(s);
+ case SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO:
+ return decode_nal_sei_content_light_info(s);
default:
av_log(s->avctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
skip_bits_long(gb, 8 * size);
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c
index 30d9194c60..22ca33a9f7 100644
--- a/libavcodec/hevcdec.c
+++ b/libavcodec/hevcdec.c
@@ -2455,6 +2455,24 @@ static int set_side_data(HEVCContext *s)
"min_luminance=%f, max_luminance=%f\n",
av_q2d(metadata->min_luminance),
av_q2d(metadata->max_luminance));
}
+ // Decrement the mastering display flag when IRAP frame has
no_rasl_output_flag=1
+ // so the side data persists for the entire coded video sequence.
+ if (s->sei_content_light_present > 0 &&
+ IS_IRAP(s) && s->no_rasl_output_flag) {
+ s->sei_content_light_present--;
+ }
+ if (s->sei_content_light_present) {
+ AVContentLightMetadata *metadata =
+ av_content_light_metadata_create_side_data(out);
+ if (!metadata)
+ return AVERROR(ENOMEM);
+ metadata->MaxCLL = s->max_content_light_level;
+ metadata->MaxFALL = s->max_pic_average_light_level;
+
+ av_log(s->avctx, AV_LOG_DEBUG, "Content Light Level Metadata:\n");
+ av_log(s->avctx, AV_LOG_DEBUG, "MaxCLL=%d, MaxFALL=%d\n",
+ metadata->MaxCLL, metadata->MaxFALL);
+ }
return 0;
}
diff --git a/libavcodec/hevcdec.h b/libavcodec/hevcdec.h
index cb8bd2e7e5..ffc3fdcac2 100644
--- a/libavcodec/hevcdec.h
+++ b/libavcodec/hevcdec.h
@@ -553,6 +553,11 @@ typedef struct HEVCContext {
uint32_t max_mastering_luminance;
uint32_t min_mastering_luminance;
+ /* content light level */
+ int sei_content_light_present;
+ uint16_t max_content_light_level;
+ uint16_t max_pic_average_light_level;
+
} HEVCContext;
int ff_hevc_decode_nal_sei(HEVCContext *s);
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 774230b1ef..63c9a1f634 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -28,8 +28,8 @@
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 58
-#define LIBAVCODEC_VERSION_MINOR 1
-#define LIBAVCODEC_VERSION_MICRO 1
+#define LIBAVCODEC_VERSION_MINOR 2
+#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \
--
2.11.1
_______________________________________________
libav-devel mailing list
[email protected]
https://lists.libav.org/mailman/listinfo/libav-devel
