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authorSteven Liu <lq@chinaffmpeg.org>2020-10-13 15:05:59 +0800
committerliuqi05 <liuqi05@kuaishou.com>2020-10-20 11:41:44 +0800
commita2b1dd0ce301450a47c972745a6b33c4c273aa5d (patch)
tree581baf720007858168c2656d8699b34bfbcfdd12
parentb5ca8f2c66954614d81579082025f580efc0cffc (diff)
downloadffmpeg-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>
-rw-r--r--libavformat/hlsenc.c48
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);
}