From 0739d5cd5c925a157ab210e4424f82d98349528d Mon Sep 17 00:00:00 2001 From: Jun Li Date: Wed, 20 Mar 2019 13:49:02 +0800 Subject: [PATCH] avformat/smoothstreamingenc:add bitrate calculate Calculate bitrate based on fragment size, only applied when bitrate is not set, for example rtsp source. Reviewed-by: Steven Liu Signed-off-by: Jun Li --- libavformat/smoothstreamingenc.c | 32 +++++++++++++++++++++++++++----- 1 file changed, 27 insertions(+), 5 deletions(-) diff --git a/libavformat/smoothstreamingenc.c b/libavformat/smoothstreamingenc.c index 094712af27..bd7f841dc7 100644 --- a/libavformat/smoothstreamingenc.c +++ b/libavformat/smoothstreamingenc.c @@ -320,11 +320,13 @@ static int ism_write_header(AVFormatContext *s) AVDictionary *opts = NULL; if (!s->streams[i]->codecpar->bit_rate) { - av_log(s, AV_LOG_ERROR, "No bit rate set for stream %d\n", i); - ret = AVERROR(EINVAL); - goto fail; + av_log(s, AV_LOG_WARNING, "No bit rate set for stream %d\n", i); + // create a tmp name for the directory of fragments + snprintf(os->dirname, sizeof(os->dirname), "%s/QualityLevels(Tmp_%d)", s->url, i); + } else { + snprintf(os->dirname, sizeof(os->dirname), "%s/QualityLevels(%"PRId64")", s->url, s->streams[i]->codecpar->bit_rate); } - snprintf(os->dirname, sizeof(os->dirname), "%s/QualityLevels(%"PRId64")", s->url, s->streams[i]->codecpar->bit_rate); + if (mkdir(os->dirname, 0777) == -1 && errno != EEXIST) { ret = AVERROR(errno); av_log(s, AV_LOG_ERROR, "mkdir failed\n"); @@ -519,7 +521,7 @@ static int ism_flush(AVFormatContext *s, int final) for (i = 0; i < s->nb_streams; i++) { OutputStream *os = &c->streams[i]; - char filename[1024], target_filename[1024], header_filename[1024]; + char filename[1024], target_filename[1024], header_filename[1024], curr_dirname[1024]; int64_t size; int64_t start_ts, duration, moof_size; if (!os->packets_written) @@ -541,6 +543,26 @@ static int ism_flush(AVFormatContext *s, int final) size = os->tail_pos - os->cur_start_pos; if ((ret = parse_fragment(s, filename, &start_ts, &duration, &moof_size, size)) < 0) break; + + if (!s->streams[i]->codecpar->bit_rate) { + int64_t bitrate = (int64_t) size * 8 * AV_TIME_BASE / av_rescale_q(duration, s->streams[i]->time_base, AV_TIME_BASE_Q); + if (!bitrate) { + av_log(s, AV_LOG_ERROR, "calculating bitrate got zero.\n"); + ret = AVERROR(EINVAL); + return ret; + } + + av_log(s, AV_LOG_DEBUG, "calculated bitrate: %"PRId64"\n", bitrate); + s->streams[i]->codecpar->bit_rate = bitrate; + memcpy(curr_dirname, os->dirname, sizeof(os->dirname)); + snprintf(os->dirname, sizeof(os->dirname), "%s/QualityLevels(%"PRId64")", s->url, s->streams[i]->codecpar->bit_rate); + snprintf(filename, sizeof(filename), "%s/temp", os->dirname); + + // rename the tmp folder back to the correct name since we now have the bitrate + if ((ret = ff_rename((const char*)curr_dirname, os->dirname, s)) < 0) + return ret; + } + snprintf(header_filename, sizeof(header_filename), "%s/FragmentInfo(%s=%"PRIu64")", os->dirname, os->stream_type_tag, start_ts); snprintf(target_filename, sizeof(target_filename), "%s/Fragments(%s=%"PRIu64")", os->dirname, os->stream_type_tag, start_ts); copy_moof(s, filename, header_filename, moof_size);