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avformat/hlsenc: support fmp4 single file mode 

add byterange mode of the hls fmp4

Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Steven Liu <lq@onvideo.cn>
This commit is contained in:
Steven Liu 2017-08-04 21:38:55 +08:00
parent 80bc648e77
commit 738b29cfb6
1 changed files with 50 additions and 27 deletions
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77
libavformat/hlsenc.c
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@ -531,6 +531,7 @@ static int hls_mux_init(AVFormatContext *s)
HLSContext *hls = s->priv_data;
AVFormatContext *oc;
AVFormatContext *vtt_oc = NULL;
int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
int i, ret;
ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL);
@ -584,7 +585,11 @@ static int hls_mux_init(AVFormatContext *s)
hls->fmp4_init_mode = 0;
if (hls->segment_type == SEGMENT_TYPE_FMP4) {
hls->fmp4_init_mode = 1;
if (hls->max_seg_size > 0) {
av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
return AVERROR_PATCHWELCOME;
}
hls->fmp4_init_mode = !byterange_mode;
if ((ret = s->io_open(s, &oc->pb, hls->base_output_dirname, AVIO_FLAG_WRITE, NULL)) < 0) {
av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", hls->fmp4_init_filename);
return ret;
@ -980,9 +985,6 @@ static void write_m3u8_head_block(HLSContext *hls, AVIOContext *out, int version
}
avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
if (hls->segment_type == SEGMENT_TYPE_FMP4) {
avio_printf(out, "#EXT-X-MAP:URI=\"%s\"\n", hls->fmp4_init_filename);
}
av_log(hls, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
}
@ -1066,13 +1068,21 @@ static int hls_window(AVFormatContext *s, int last)
avio_printf(out, "#EXT-X-DISCONTINUITY\n");
}
if (hls->flags & HLS_ROUND_DURATIONS)
avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
else
avio_printf(out, "#EXTINF:%f,\n", en->duration);
if (byterange_mode)
avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
en->size, en->pos);
if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == hls->segments)) {
avio_printf(out, "#EXT-X-MAP:URI=\"%s\"", hls->fmp4_init_filename);
if (hls->flags & HLS_SINGLE_FILE) {
avio_printf(out, ",BYTERANGE=\"%"PRId64"@%"PRId64"\"", en->size, en->pos);
}
avio_printf(out, "\n");
} else {
if (hls->flags & HLS_ROUND_DURATIONS)
avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
else
avio_printf(out, "#EXTINF:%f,\n", en->duration);
if (byterange_mode)
avio_printf(out, "#EXT-X-BYTERANGE:%"PRId64"@%"PRId64"\n",
en->size, en->pos);
}
if (hls->flags & HLS_PROGRAM_DATE_TIME) {
time_t tt, wrongsecs;
int milli;
@ -1097,9 +1107,11 @@ static int hls_window(AVFormatContext *s, int last)
avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1);
prog_date_time += en->duration;
}
if (hls->baseurl)
avio_printf(out, "%s", hls->baseurl);
avio_printf(out, "%s\n", en->filename);
if (!((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == hls->segments))) {
if (hls->baseurl)
avio_printf(out, "%s", hls->baseurl);
avio_printf(out, "%s\n", en->filename);
}
}
if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
@ -1262,7 +1274,7 @@ static int hls_start(AVFormatContext *s)
}
av_dict_free(&options);
if (c->segment_type == SEGMENT_TYPE_FMP4) {
if (c->segment_type == SEGMENT_TYPE_FMP4 && !(c->flags & HLS_SINGLE_FILE)) {
write_styp(oc->pb);
} else {
/* We only require one PAT/PMT per segment. */
@ -1315,15 +1327,10 @@ static int hls_write_header(AVFormatContext *s)
const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
const char *vtt_pattern = "%d.vtt";
AVDictionary *options = NULL;
int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
int basename_size;
int vtt_basename_size;
if (hls->segment_type == SEGMENT_TYPE_FMP4) {
if (byterange_mode) {
av_log(s, AV_LOG_WARNING, "Have not support fmp4 byterange mode yet now\n");
return AVERROR_PATCHWELCOME;
}
pattern = "%d.m4s";
}
if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
@ -1400,8 +1407,13 @@ static int hls_write_header(AVFormatContext *s)
goto fail;
}
} else {
if (hls->flags & HLS_SINGLE_FILE)
pattern = ".ts";
if (hls->flags & HLS_SINGLE_FILE) {
if (hls->segment_type == SEGMENT_TYPE_FMP4) {
pattern = ".m4s";
} else {
pattern = ".ts";
}
}
if (hls->use_localtime) {
basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
@ -1490,6 +1502,14 @@ static int hls_write_header(AVFormatContext *s)
av_strlcat(hls->vtt_basename, vtt_pattern, vtt_basename_size);
}
if ((hls->flags & HLS_SINGLE_FILE) && (hls->segment_type == SEGMENT_TYPE_FMP4)) {
hls->fmp4_init_filename = av_strdup(hls->basename);
if (!hls->fmp4_init_filename) {
ret = AVERROR(ENOMEM);
goto fail;
}
}
if ((ret = hls_mux_init(s)) < 0)
goto fail;
@ -1504,7 +1524,7 @@ static int hls_write_header(AVFormatContext *s)
}
}
if (hls->segment_type != SEGMENT_TYPE_FMP4) {
if (hls->segment_type != SEGMENT_TYPE_FMP4 || hls->flags & HLS_SINGLE_FILE) {
if ((ret = hls_start(s)) < 0)
goto fail;
}
@ -1545,6 +1565,7 @@ fail:
av_dict_free(&options);
if (ret < 0) {
av_freep(&hls->fmp4_init_filename);
av_freep(&hls->basename);
av_freep(&hls->vtt_basename);
av_freep(&hls->key_basename);
@ -1643,7 +1664,7 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
hls->number--;
}
if (!hls->fmp4_init_mode)
if (!hls->fmp4_init_mode || byterange_mode)
ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
hls->start_pos = new_start_pos;
@ -1679,9 +1700,10 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
return ret;
}
if ((ret = hls_window(s, 0)) < 0) {
return ret;
}
if (!hls->fmp4_init_mode || byterange_mode)
if ((ret = hls_window(s, 0)) < 0) {
return ret;
}
}
ret = ff_write_chained(oc, stream_index, pkt, s, 0);
@ -1722,6 +1744,7 @@ static int hls_write_trailer(struct AVFormatContext *s)
hls->size = avio_tell(hls->vtt_avf->pb) - hls->start_pos;
ff_format_io_close(s, &vtt_oc->pb);
}
av_freep(&hls->fmp4_init_filename);
av_freep(&hls->basename);
av_freep(&hls->base_output_dirname);
av_freep(&hls->key_basename);