From 4e5b1882d65c206c5b27730270a390c927e54067 Mon Sep 17 00:00:00 2001 From: Zhu Pengfei <411294962@qq.com> Date: Mon, 4 Mar 2024 21:51:55 +0800 Subject: [PATCH] avformat/flvdec: support enhanced flv PacketTypeMetadata Signed-off-by: Zhu Pengfei <411294962@qq.com> Signed-off-by: Steven Liu --- libavformat/flvdec.c | 177 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 176 insertions(+), 1 deletion(-) diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index d7cfa27f76..892371fcd0 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -33,6 +33,7 @@ #include "libavutil/internal.h" #include "libavutil/intfloat.h" #include "libavutil/intreadwrite.h" +#include "libavutil/mastering_display_metadata.h" #include "libavutil/mathematics.h" #include "avformat.h" #include "demux.h" @@ -45,6 +46,28 @@ #define MAX_DEPTH 16 ///< arbitrary limit to prevent unbounded recursion +typedef struct FLVMasteringMeta { + double r_x; + double r_y; + double g_x; + double g_y; + double b_x; + double b_y; + double white_x; + double white_y; + double max_luminance; + double min_luminance; +} FLVMasteringMeta; + +typedef struct FLVMetaVideoColor { + uint64_t matrix_coefficients; + uint64_t transfer_characteristics; + uint64_t primaries; + uint64_t max_cll; + uint64_t max_fall; + FLVMasteringMeta mastering_meta; +} FLVMetaVideoColor; + typedef struct FLVContext { const AVClass *class; ///< Class for private options. int trust_metadata; ///< configure streams according onMetaData @@ -80,6 +103,8 @@ typedef struct FLVContext { int64_t time_offset; int64_t time_pos; + FLVMetaVideoColor *metaVideoColor; + int meta_color_info_flag; } FLVContext; /* AMF date type */ @@ -524,6 +549,7 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, FLVContext *flv = s->priv_data; AVIOContext *ioc; AMFDataType amf_type; + FLVMetaVideoColor *meta_video_color = flv->metaVideoColor; char str_val[1024]; double num_val; amf_date date; @@ -672,6 +698,43 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, } } + if (meta_video_color) { + if (amf_type == AMF_DATA_TYPE_NUMBER || + amf_type == AMF_DATA_TYPE_BOOL) { + if (!strcmp(key, "colorPrimaries")) { + meta_video_color->primaries = num_val; + } else if (!strcmp(key, "transferCharacteristics")) { + meta_video_color->transfer_characteristics = num_val; + } else if (!strcmp(key, "matrixCoefficients")) { + meta_video_color->matrix_coefficients = num_val; + } else if (!strcmp(key, "maxFall")) { + meta_video_color->max_fall = num_val; + } else if (!strcmp(key, "maxCLL")) { + meta_video_color->max_cll = num_val; + } else if (!strcmp(key, "redX")) { + meta_video_color->mastering_meta.r_x = num_val; + } else if (!strcmp(key, "redY")) { + meta_video_color->mastering_meta.r_y = num_val; + } else if (!strcmp(key, "greenX")) { + meta_video_color->mastering_meta.g_x = num_val; + } else if (!strcmp(key, "greenY")) { + meta_video_color->mastering_meta.g_y = num_val; + } else if (!strcmp(key, "blueX")) { + meta_video_color->mastering_meta.b_x = num_val; + } else if (!strcmp(key, "blueY")) { + meta_video_color->mastering_meta.b_y = num_val; + } else if (!strcmp(key, "whitePointX")) { + meta_video_color->mastering_meta.white_x = num_val; + } else if (!strcmp(key, "whitePointY")) { + meta_video_color->mastering_meta.white_y = num_val; + } else if (!strcmp(key, "maxLuminance")) { + meta_video_color->mastering_meta.max_luminance = num_val; + } else if (!strcmp(key, "minLuminance")) { + meta_video_color->mastering_meta.min_luminance = num_val; + } + } + } + if (amf_type == AMF_DATA_TYPE_OBJECT && s->nb_streams == 1 && ((!apar && !strcmp(key, "audiocodecid")) || (!vpar && !strcmp(key, "videocodecid")))) @@ -824,6 +887,7 @@ static int flv_read_close(AVFormatContext *s) av_freep(&flv->new_extradata[i]); av_freep(&flv->keyframe_times); av_freep(&flv->keyframe_filepositions); + av_freep(&flv->metaVideoColor); return 0; } @@ -1028,6 +1092,103 @@ static int resync(AVFormatContext *s) return AVERROR_EOF; } +static int flv_parse_video_color_info(AVFormatContext *s, AVStream *st, int64_t next_pos) +{ + FLVContext *flv = s->priv_data; + AMFDataType type; + AVIOContext *ioc; + char buffer[32]; + ioc = s->pb; + + // first object needs to be "colorInfo" string + type = avio_r8(ioc); + if (type != AMF_DATA_TYPE_STRING || + amf_get_string(ioc, buffer, sizeof(buffer)) < 0) + return TYPE_UNKNOWN; + + if (strcmp(buffer, "colorInfo")) { + av_log(s, AV_LOG_DEBUG, "Unknown type %s\n", buffer); + return TYPE_UNKNOWN; + } + + if (!(flv->metaVideoColor = av_mallocz(sizeof(FLVMetaVideoColor)))) { + return AVERROR(ENOMEM); + } + flv->meta_color_info_flag = 1; + amf_parse_object(s, NULL, NULL, buffer, next_pos, 0); // parse metadata + return 0; +} + +static int flv_update_video_color_info(AVFormatContext *s, AVStream *st) +{ + FLVContext *flv = s->priv_data; + const FLVMetaVideoColor* meta_video_color = flv->metaVideoColor; + const FLVMasteringMeta *mastering_meta = &meta_video_color->mastering_meta; + + int has_mastering_primaries, has_mastering_luminance; + // Mastering primaries are CIE 1931 coords, and must be > 0. + has_mastering_primaries = + mastering_meta->r_x > 0 && mastering_meta->r_y > 0 && + mastering_meta->g_x > 0 && mastering_meta->g_y > 0 && + mastering_meta->b_x > 0 && mastering_meta->b_y > 0 && + mastering_meta->white_x > 0 && mastering_meta->white_y > 0; + has_mastering_luminance = mastering_meta->max_luminance > 0 && mastering_meta->min_luminance > 0; + + if (meta_video_color->matrix_coefficients != AVCOL_SPC_RESERVED) + st->codecpar->color_space = meta_video_color->matrix_coefficients; + if (meta_video_color->primaries != AVCOL_PRI_RESERVED && + meta_video_color->primaries != AVCOL_PRI_RESERVED0) + st->codecpar->color_primaries = meta_video_color->primaries; + if (meta_video_color->transfer_characteristics != AVCOL_TRC_RESERVED && + meta_video_color->transfer_characteristics != AVCOL_TRC_RESERVED0) + st->codecpar->color_trc = meta_video_color->transfer_characteristics; + + if (meta_video_color->max_cll && meta_video_color->max_fall) { + size_t size = 0; + AVContentLightMetadata *metadata = av_content_light_metadata_alloc(&size); + if (!metadata) + return AVERROR(ENOMEM); + if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data, + AV_PKT_DATA_CONTENT_LIGHT_LEVEL, metadata, size, 0)) { + av_freep(&metadata); + return AVERROR(ENOMEM); + } + metadata->MaxCLL = meta_video_color->max_cll; + metadata->MaxFALL = meta_video_color->max_fall; + } + + if (has_mastering_primaries || has_mastering_luminance) { + AVMasteringDisplayMetadata *metadata; + AVPacketSideData *sd = av_packet_side_data_new(&st->codecpar->coded_side_data, + &st->codecpar->nb_coded_side_data, + AV_PKT_DATA_MASTERING_DISPLAY_METADATA, + sizeof(AVMasteringDisplayMetadata), 0); + if (!sd) + return AVERROR(ENOMEM); + metadata = (AVMasteringDisplayMetadata*)sd->data; + memset(metadata, 0, sizeof(AVMasteringDisplayMetadata)); + // hdrCll + if (has_mastering_luminance) { + metadata->max_luminance = av_d2q(mastering_meta->max_luminance, INT_MAX); + metadata->min_luminance = av_d2q(mastering_meta->min_luminance, INT_MAX); + metadata->has_luminance = 1; + } + // hdrMdcv + if (has_mastering_primaries) { + metadata->display_primaries[0][0] = av_d2q(mastering_meta->r_x, INT_MAX); + metadata->display_primaries[0][1] = av_d2q(mastering_meta->r_y, INT_MAX); + metadata->display_primaries[1][0] = av_d2q(mastering_meta->g_x, INT_MAX); + metadata->display_primaries[1][1] = av_d2q(mastering_meta->g_y, INT_MAX); + metadata->display_primaries[2][0] = av_d2q(mastering_meta->b_x, INT_MAX); + metadata->display_primaries[2][1] = av_d2q(mastering_meta->b_y, INT_MAX); + metadata->white_point[0] = av_d2q(mastering_meta->white_x, INT_MAX); + metadata->white_point[1] = av_d2q(mastering_meta->white_y, INT_MAX); + metadata->has_primaries = 1; + } + } + return 0; +} + static int flv_read_packet(AVFormatContext *s, AVPacket *pkt) { FLVContext *flv = s->priv_data; @@ -1100,8 +1261,17 @@ retry: video_codec_id = avio_rb32(s->pb); size -= 4; } - if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_VIDEO_INFO_CMD) + + if (enhanced_flv && stream_type == FLV_STREAM_TYPE_VIDEO && (flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_VIDEO_INFO_CMD) { + int pkt_type = flags & 0x0F; + if (pkt_type == PacketTypeMetadata) { + int ret = flv_parse_video_color_info(s, st, next); + av_log(s, AV_LOG_DEBUG, "enhanced flv parse metadata ret %d and skip\n", ret); + } goto skip; + } else if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_VIDEO_INFO_CMD) { + goto skip; + } } else if (type == FLV_TAG_TYPE_META) { stream_type=FLV_STREAM_TYPE_SUBTITLE; if (size > 13 + 1 + 4) { // Header-type metadata stuff @@ -1287,6 +1457,11 @@ retry_duration: goto leave; } + if (enhanced_flv && stream_type == FLV_STREAM_TYPE_VIDEO && flv->meta_color_info_flag) { + flv_update_video_color_info(s, st); // update av packet side data + flv->meta_color_info_flag = 0; + } + if (st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_MPEG4 || (st->codecpar->codec_id == AV_CODEC_ID_HEVC && type == PacketTypeCodedFrames)) { // sign extension