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avcodec/h264: Greenmetadata SEI parsing

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Nicolas DEROUINEAU 2015-06-30 15:17:59 +02:00 committed by Michael Niedermayer
parent 7e9c7b623f
commit 04a68f4348
5 changed files with 89 additions and 0 deletions
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3
doc/codecs.texi
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@ -475,6 +475,9 @@ per-block quantization parameter (QP)
motion vector
@item dct_coeff
@item green_metadata
display complexity metadata for the upcoming frame, GoP or for a given duration.
@item skip
@item startcode

1
libavcodec/avcodec.h
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@ -2616,6 +2616,7 @@ typedef struct AVCodecContext {
#endif
#define FF_DEBUG_BUFFERS 0x00008000
#define FF_DEBUG_THREADS 0x00010000
#define FF_DEBUG_GREEN_MD 0x00800000
#define FF_DEBUG_NOMC 0x01000000
#if FF_API_DEBUG_MV

21
libavcodec/h264.h
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@ -137,6 +137,7 @@ typedef enum {
SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync)
SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement
SEI_TYPE_DISPLAY_ORIENTATION = 47, ///< display orientation
SEI_TYPE_GREEN_METADATA = 56 ///< GreenMPEG information
} SEI_Type;
/**
@ -267,6 +268,22 @@ typedef struct FPA {
int quincunx_sampling_flag;
} FPA;
/**
* Green MetaData Information Type
*/
typedef struct GreenMetaData {
uint8_t green_metadata_type;
uint8_t period_type;
uint16_t num_seconds;
uint16_t num_pictures;
uint8_t percent_non_zero_macroblocks;
uint8_t percent_intra_coded_macroblocks;
uint8_t percent_six_tap_filtering;
uint8_t percent_alpha_point_deblocking_instance;
uint8_t xsd_metric_type;
uint16_t xsd_metric_value;
} GreenMetaData;
/**
* Memory management control operation opcode.
*/
@ -817,6 +834,10 @@ typedef struct H264Context {
/* Motion Estimation */
qpel_mc_func (*qpel_put)[16];
qpel_mc_func (*qpel_avg)[16];
/*Green Metadata */
GreenMetaData sei_green_metadata;
} H264Context;
extern const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1]; ///< One chroma qp table for each possible bit depth (8-14).

63
libavcodec/h264_sei.c
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@ -294,6 +294,66 @@ static int decode_display_orientation(H264Context *h)
return 0;
}
static int decode_GreenMetadata(H264Context *h)
{
if (h->avctx->debug & FF_DEBUG_GREEN_MD)
av_log(h->avctx, AV_LOG_DEBUG, "Green Metadata Info SEI message\n");
h->sei_green_metadata.green_metadata_type=get_bits(&h->gb, 8);
if (h->avctx->debug & FF_DEBUG_GREEN_MD)
av_log(h->avctx, AV_LOG_DEBUG, "green_metadata_type = %d\n",
h->sei_green_metadata.green_metadata_type);
if (h->sei_green_metadata.green_metadata_type==0){
h->sei_green_metadata.period_type=get_bits(&h->gb, 8);
if (h->avctx->debug & FF_DEBUG_GREEN_MD)
av_log(h->avctx, AV_LOG_DEBUG, "green_metadata_period_type = %d\n",
h->sei_green_metadata.period_type);
if (h->sei_green_metadata.green_metadata_type==2){
h->sei_green_metadata.num_seconds = get_bits(&h->gb, 16);
if (h->avctx->debug & FF_DEBUG_GREEN_MD)
av_log(h->avctx, AV_LOG_DEBUG, "green_metadata_num_seconds = %d\n",
h->sei_green_metadata.num_seconds);
}
else if (h->sei_green_metadata.period_type==3){
h->sei_green_metadata.num_pictures = get_bits(&h->gb, 16);
if (h->avctx->debug & FF_DEBUG_GREEN_MD)
av_log(h->avctx, AV_LOG_DEBUG, "green_metadata_num_pictures = %d\n",
h->sei_green_metadata.num_pictures);
}
h->sei_green_metadata.percent_non_zero_macroblocks=get_bits(&h->gb, 8);
h->sei_green_metadata.percent_intra_coded_macroblocks=get_bits(&h->gb, 8);
h->sei_green_metadata.percent_six_tap_filtering=get_bits(&h->gb, 8);
h->sei_green_metadata.percent_alpha_point_deblocking_instance=get_bits(&h->gb, 8);
if (h->avctx->debug & FF_DEBUG_GREEN_MD)
av_log(h->avctx, AV_LOG_DEBUG, "SEI GREEN Complexity Metrics = %f %f %f %f\n",
(float)h->sei_green_metadata.percent_non_zero_macroblocks/255,
(float)h->sei_green_metadata.percent_intra_coded_macroblocks/255,
(float)h->sei_green_metadata.percent_six_tap_filtering/255,
(float)h->sei_green_metadata.percent_alpha_point_deblocking_instance/255);
}else if( h->sei_green_metadata.green_metadata_type==1){
h->sei_green_metadata.xsd_metric_type=get_bits(&h->gb, 8);
h->sei_green_metadata.xsd_metric_value=get_bits(&h->gb, 16);
if (h->avctx->debug & FF_DEBUG_GREEN_MD)
av_log(h->avctx, AV_LOG_DEBUG, "xsd_metric_type = %d\n",
h->sei_green_metadata.xsd_metric_type);
if ( h->sei_green_metadata.xsd_metric_type==0){
if (h->avctx->debug & FF_DEBUG_GREEN_MD)
av_log(h->avctx, AV_LOG_DEBUG, "xsd_metric_value = %f\n",
(float)h->sei_green_metadata.xsd_metric_value/100);
}
}
return 0;
}
int ff_h264_decode_sei(H264Context *h)
{
while (get_bits_left(&h->gb) > 16 && show_bits(&h->gb, 16)) {
@ -346,6 +406,9 @@ int ff_h264_decode_sei(H264Context *h)
case SEI_TYPE_DISPLAY_ORIENTATION:
ret = decode_display_orientation(h);
break;
case SEI_TYPE_GREEN_METADATA:
ret = decode_GreenMetadata(h);
break;
default:
av_log(h->avctx, AV_LOG_DEBUG, "unknown SEI type %d\n", type);
}

1
libavcodec/options_table.h
View File

@ -253,6 +253,7 @@ static const AVOption avcodec_options[] = {
{"mv", "motion vector", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DEBUG_MV }, INT_MIN, INT_MAX, V|D, "debug"},
#endif
{"dct_coeff", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_DEBUG_DCT_COEFF }, INT_MIN, INT_MAX, V|D, "debug"},
{"green_metadata", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_DEBUG_GREEN_MD }, INT_MIN, INT_MAX, V|D, "debug"},
{"skip", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_DEBUG_SKIP }, INT_MIN, INT_MAX, V|D, "debug"},
{"startcode", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_DEBUG_STARTCODE }, INT_MIN, INT_MAX, V|D, "debug"},
#if FF_API_UNUSED_MEMBERS