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| author | Steven Liu <lq@chinaffmpeg.org> | 2020-10-13 15:05:59 +0800 |
|---|---|---|
| committer | liuqi05 <liuqi05@kuaishou.com> | 2020-10-20 11:41:44 +0800 |
| commit | a2b1dd0ce301450a47c972745a6b33c4c273aa5d (patch) | |
| tree | 581baf720007858168c2656d8699b34bfbcfdd12 /libavformat | |
| parent | b5ca8f2c66954614d81579082025f580efc0cffc (diff) | |
| download | ffmpeg-a2b1dd0ce301450a47c972745a6b33c4c273aa5d.tar.gz | |
avformat/hlsenc: support CODECS Attribute in hevc EXT-X-STREAM-INF
fix ticket: 8904
parse the SPS from extradata and get profile_tier_level
write the profile_tier_level info into CODECS Attribute
HLS CODECS Attribute reference to :https://developer.apple.com/documentation/http_live_streaming/hls_authoring_specification_for_apple_devices/hls_authoring_specification_for_apple_devices_appendixes
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
Signed-off-by: liuqi05 <liuqi05@kuaishou.com>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/hlsenc.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c index f7eb2411b0..8e4cc36d50 100644 --- a/libavformat/hlsenc.c +++ b/libavformat/hlsenc.c @@ -46,6 +46,7 @@ #include "avformat.h" #include "avio_internal.h" +#include "avc.h" #if CONFIG_HTTP_PROTOCOL #include "http.h" #endif @@ -337,6 +338,49 @@ static void write_codec_attr(AVStream *st, VariantStream *vs) } else { goto fail; } + } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) { + uint8_t *data = st->codecpar->extradata; + int profile = FF_PROFILE_UNKNOWN; + int level = FF_LEVEL_UNKNOWN; + + if (st->codecpar->profile != FF_PROFILE_UNKNOWN) + profile = st->codecpar->profile; + if (st->codecpar->level != FF_LEVEL_UNKNOWN) + level = st->codecpar->level; + + /* check the boundary of data which from current position is small than extradata_size */ + while (data && (data - st->codecpar->extradata + 5) < st->codecpar->extradata_size) { + /* get HEVC SPS NAL and seek to profile_tier_level */ + if (!(data[0] | data[1] | data[2]) && data[3] == 1 && ((data[4] & 0x42) == 0x42)) { + int remain_size = 0; + int rbsp_size = 0; + /* skip start code + nalu header */ + data += 6; + /* process by reference General NAL unit syntax */ + remain_size = st->codecpar->extradata_size - (data - st->codecpar->extradata); + uint8_t *rbsp_buf = ff_nal_unit_extract_rbsp(data, remain_size, &rbsp_size, 0); + if (!rbsp_buf) + return; + if (rbsp_size < 13) { + av_freep(&rbsp_buf); + break; + } + /* skip sps_video_parameter_set_id u(4), + * sps_max_sub_layers_minus1 u(3), + * and sps_temporal_id_nesting_flag u(1) */ + profile = rbsp_buf[1] & 0x1f; + /* skip 8 + 8 + 32 + 4 + 43 + 1 bit */ + level = rbsp_buf[12]; + av_freep(&rbsp_buf); + break; + } + data++; + } + if (st->codecpar->codec_tag == MKTAG('h','v','c','1') && + profile != FF_PROFILE_UNKNOWN && + level != FF_LEVEL_UNKNOWN) { + snprintf(attr, sizeof(attr), "%s.%d.4.L%d.B01", av_fourcc2str(st->codecpar->codec_tag), profile, level); + } } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) { snprintf(attr, sizeof(attr), "mp4a.40.33"); } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) { @@ -2247,6 +2291,10 @@ static int hls_write_header(AVFormatContext *s) continue; } avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den); + if (outer_st->codecpar->codec_id == AV_CODEC_ID_HEVC && + outer_st->codecpar->codec_tag != MKTAG('h','v','c','1')) { + av_log(s, AV_LOG_WARNING, "Stream HEVC is not hvc1, you should use tag:v hvc1 to set it.\n"); + } write_codec_attr(outer_st, vs); } |