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avformat/hlsenc: write fmp4 init header after first AV frame

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fix ticket id: 6825

Signed-off-by: Steven Liu <lq@onvideo.cn>
Tested-by: Aman Gupta <aman@tmm1.net>
This commit is contained in:
Steven Liu 2017-11-14 10:31:26 +08:00
parent 8329ae781a
commit 880b299381
1 changed files with 26 additions and 3 deletions
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29
libavformat/hlsenc.c
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@ -108,6 +108,9 @@ typedef struct HLSContext {
uint32_t start_sequence_source_type; // enum StartSequenceSourceType
AVOutputFormat *oformat;
AVOutputFormat *vtt_oformat;
AVIOContext *out;
int packets_written;
int init_range_length;
AVFormatContext *avf;
AVFormatContext *vtt_avf;
@ -598,6 +601,7 @@ static int hls_mux_init(AVFormatContext *s)
st->time_base = s->streams[i]->time_base;
av_dict_copy(&st->metadata, s->streams[i]->metadata, 0);
}
hls->packets_written = 1;
hls->start_pos = 0;
hls->new_start = 1;
hls->fmp4_init_mode = 0;
@ -607,9 +611,14 @@ static int hls_mux_init(AVFormatContext *s)
av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
return AVERROR_PATCHWELCOME;
}
hls->packets_written = 0;
hls->init_range_length = 0;
hls->fmp4_init_mode = !byterange_mode;
set_http_options(s, &options, hls);
if ((ret = s->io_open(s, &oc->pb, hls->base_output_dirname, AVIO_FLAG_WRITE, &options)) < 0) {
if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
return ret;
if ((ret = s->io_open(s, &hls->out, hls->base_output_dirname, AVIO_FLAG_WRITE, &options)) < 0) {
av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", hls->fmp4_init_filename);
return ret;
}
@ -634,6 +643,7 @@ static int hls_mux_init(AVFormatContext *s)
av_dict_free(&options);
return AVERROR(EINVAL);
}
avio_flush(oc->pb);
av_dict_free(&options);
}
return 0;
@ -1600,6 +1610,8 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
int is_ref_pkt = 1;
int ret = 0, can_split = 1;
int stream_index = 0;
int range_length = 0;
uint8_t *buffer = NULL;
if (hls->sequence - hls->nb_entries > hls->start_sequence && hls->init_time > 0) {
/* reset end_pts, hls->recording_time at end of the init hls list */
@ -1645,7 +1657,7 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
}
}
if (hls->fmp4_init_mode || can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
if (hls->packets_written && can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
end_pts, AV_TIME_BASE_Q) >= 0) {
int64_t new_start_pos;
char *old_filename = av_strdup(hls->avf->filename);
@ -1661,7 +1673,17 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
hls->size = new_start_pos - hls->start_pos;
if (!byterange_mode) {
ff_format_io_close(s, &oc->pb);
if (hls->segment_type == SEGMENT_TYPE_FMP4 && !hls->init_range_length) {
avio_flush(oc->pb);
range_length = avio_close_dyn_buf(oc->pb, &buffer);
avio_write(hls->out, buffer, range_length);
hls->init_range_length = range_length;
avio_open_dyn_buf(&oc->pb);
hls->packets_written = 0;
ff_format_io_close(s, &hls->out);
} else {
ff_format_io_close(s, &oc->pb);
}
if (hls->vtt_avf) {
ff_format_io_close(s, &hls->vtt_avf->pb);
}
@ -1719,6 +1741,7 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
}
}
hls->packets_written++;
ret = ff_write_chained(oc, stream_index, pkt, s, 0);
return ret;