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Code Issues Releases Activity

avformat/dashenc: opening a segment file when its first frame is ready

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This commit is contained in:
Vishwanath Dixit 2018-02-19 11:25:25 +05:30 committed by Karthick Jeyapal
parent 74afa54528
commit ffe7cc89d0
1 changed files with 36 additions and 21 deletions
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57
libavformat/dashenc.c
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@ -81,6 +81,9 @@ typedef struct OutputStream {
char bandwidth_str[64];
char codec_str[100];
char filename[1024];
char full_path[1024];
char temp_path[1024];
} OutputStream;
typedef struct DASHContext {
@ -1134,7 +1137,6 @@ static int dash_flush(AVFormatContext *s, int final, int stream)
for (i = 0; i < s->nb_streams; i++) {
OutputStream *os = &c->streams[i];
AVStream *st = s->streams[i];
char filename[1024] = "", full_path[1024], temp_path[1024];
int range_length, index_length = 0;
if (!os->packets_written)
@ -1152,24 +1154,11 @@ static int dash_flush(AVFormatContext *s, int final, int stream)
continue;
}
if (!os->init_range_length) {
flush_init_segment(s, os);
}
if (!c->single_file) {
AVDictionary *opts = NULL;
ff_dash_fill_tmpl_params(filename, sizeof(filename), c->media_seg_name, i, os->segment_index, os->bit_rate, os->start_pts);
snprintf(full_path, sizeof(full_path), "%s%s", c->dirname, filename);
snprintf(temp_path, sizeof(temp_path), use_rename ? "%s.tmp" : "%s", full_path);
set_http_options(&opts, c);
ret = dashenc_io_open(s, &os->out, temp_path, &opts);
if (ret < 0)
break;
av_dict_free(&opts);
if (!strcmp(os->format_name, "mp4"))
write_styp(os->ctx->pb);
} else {
snprintf(full_path, sizeof(full_path), "%s%s", c->dirname, os->initfile);
snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
}
ret = flush_dynbuf(os, &range_length);
@ -1178,12 +1167,12 @@ static int dash_flush(AVFormatContext *s, int final, int stream)
os->packets_written = 0;
if (c->single_file) {
find_index_range(s, full_path, os->pos, &index_length);
find_index_range(s, os->full_path, os->pos, &index_length);
} else {
dashenc_io_close(s, &os->out, temp_path);
dashenc_io_close(s, &os->out, os->temp_path);
if (use_rename) {
ret = avpriv_io_move(temp_path, full_path);
ret = avpriv_io_move(os->temp_path, os->full_path);
if (ret < 0)
break;
}
@ -1200,8 +1189,8 @@ static int dash_flush(AVFormatContext *s, int final, int stream)
" bandwidth=\"%d\"", os->bit_rate);
}
}
add_segment(os, filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length);
av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, full_path);
add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length);
av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
os->pos += range_length;
}
@ -1303,7 +1292,33 @@ static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
else
os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
os->packets_written++;
return ff_write_chained(os->ctx, 0, pkt, s, 0);
if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
return ret;
if (!os->init_range_length)
flush_init_segment(s, os);
//open the output context when the first frame of a segment is ready
if (!c->single_file && !os->out) {
AVDictionary *opts = NULL;
const char *proto = avio_find_protocol_name(s->filename);
int use_rename = proto && !strcmp(proto, "file");
os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
c->media_seg_name, pkt->stream_index,
os->segment_index, os->bit_rate, os->start_pts);
snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
os->filename);
snprintf(os->temp_path, sizeof(os->temp_path),
use_rename ? "%s.tmp" : "%s", os->full_path);
set_http_options(&opts, c);
ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
if (ret < 0)
return ret;
av_dict_free(&opts);
}
return ret;
}
static int dash_write_trailer(AVFormatContext *s)