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avformat/hlsenc: Extend persistent http connections to playlists 

Before this patch persistent http connections would work only for media segments.
The playlists were still opening a new connection everytime.
This patch extends persistent http connections to playlists as well.

Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
This commit is contained in:
Karthick J 2017-12-15 22:11:12 +08:00 committed by Steven Liu
parent 6ae18228cd
commit b2d27d912b
1 changed files with 27 additions and 29 deletions
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56
libavformat/hlsenc.c
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@ -203,6 +203,8 @@ typedef struct HLSContext {
char *master_pl_name;
unsigned int master_publish_rate;
int http_persistent;
AVIOContext *m3u8_out;
AVIOContext *sub_m3u8_out;
} HLSContext;
static int mkdir_p(const char *path) {
@ -1085,7 +1087,6 @@ static int create_master_playlist(AVFormatContext *s,
HLSContext *hls = s->priv_data;
VariantStream *vs;
AVStream *vid_st, *aud_st;
AVIOContext *master_pb = 0;
AVDictionary *options = NULL;
unsigned int i, j;
int m3u8_name_size, ret, bandwidth;
@ -1106,8 +1107,7 @@ static int create_master_playlist(AVFormatContext *s,
set_http_options(s, &options, hls);
ret = s->io_open(s, &master_pb, hls->master_m3u8_url, AVIO_FLAG_WRITE,\
&options);
ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options);
av_dict_free(&options);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
@ -1115,7 +1115,7 @@ static int create_master_playlist(AVFormatContext *s,
goto fail;
}
ff_hls_write_playlist_version(master_pb, hls->version);
ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
/* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
for (i = 0; i < hls->nb_varstreams; i++) {
@ -1156,7 +1156,7 @@ static int create_master_playlist(AVFormatContext *s,
bandwidth += aud_st->codecpar->bit_rate;
bandwidth += bandwidth / 10;
ff_hls_write_stream_info(vid_st, master_pb, bandwidth, m3u8_rel_name);
ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name);
av_freep(&m3u8_rel_name);
}
@ -1164,7 +1164,7 @@ fail:
if(ret >=0)
hls->master_m3u8_created = 1;
av_freep(&m3u8_rel_name);
ff_format_io_close(s, &master_pb);
hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url);
return ret;
}
@ -1174,8 +1174,6 @@ static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
HLSSegment *en;
int target_duration = 0;
int ret = 0;
AVIOContext *out = NULL;
AVIOContext *sub_out = NULL;
char temp_filename[1024];
int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
const char *proto = avio_find_protocol_name(s->filename);
@ -1207,7 +1205,7 @@ static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
set_http_options(s, &options, hls);
snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", vs->m3u8_name);
if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0)
goto fail;
for (en = vs->segments; en; en = en->next) {
@ -1216,67 +1214,67 @@ static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
}
vs->discontinuity_set = 0;
ff_hls_write_playlist_header(out, hls->version, hls->allowcache,
ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache,
target_duration, sequence, hls->pl_type);
if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
avio_printf(out, "#EXT-X-DISCONTINUITY\n");
avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n");
vs->discontinuity_set = 1;
}
if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
avio_printf(out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
}
for (en = vs->segments; en; en = en->next) {
if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
av_strcasecmp(en->iv_string, iv_string))) {
avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
if (*en->iv_string)
avio_printf(out, ",IV=0x%s", en->iv_string);
avio_printf(out, "\n");
avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string);
avio_printf(hls->m3u8_out, "\n");
key_uri = en->key_uri;
iv_string = en->iv_string;
}
if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
ff_hls_write_init_file(out, vs->fmp4_init_filename,
ff_hls_write_init_file(hls->m3u8_out, vs->fmp4_init_filename,
hls->flags & HLS_SINGLE_FILE, en->size, en->pos);
}
ret = ff_hls_write_file_entry(out, en->discont, byterange_mode,
en->duration, hls->flags & HLS_ROUND_DURATIONS,
en->size, en->pos, vs->baseurl,
en->filename, prog_date_time_p);
ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode,
en->duration, hls->flags & HLS_ROUND_DURATIONS,
en->size, en->pos, vs->baseurl,
en->filename, prog_date_time_p);
if (ret < 0) {
av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
}
}
if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
ff_hls_write_end_list(out);
ff_hls_write_end_list(hls->m3u8_out);
if( vs->vtt_m3u8_name ) {
if ((ret = s->io_open(s, &sub_out, vs->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0)
goto fail;
ff_hls_write_playlist_header(sub_out, hls->version, hls->allowcache,
ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
target_duration, sequence, PLAYLIST_TYPE_NONE);
for (en = vs->segments; en; en = en->next) {
ret = ff_hls_write_file_entry(sub_out, 0, byterange_mode,
en->duration, 0, en->size, en->pos,
vs->baseurl, en->sub_filename, NULL);
ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
en->duration, 0, en->size, en->pos,
vs->baseurl, en->sub_filename, NULL);
if (ret < 0) {
av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
}
}
if (last)
ff_hls_write_end_list(sub_out);
ff_hls_write_end_list(hls->sub_m3u8_out);
}
fail:
av_dict_free(&options);
ff_format_io_close(s, &out);
ff_format_io_close(s, &sub_out);
hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
if (ret >= 0 && use_rename)
ff_rename(temp_filename, vs->m3u8_name, s);