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author | Stefano Sabatini <stefasab@gmail.com> | 2013-12-02 15:21:52 +0100 |
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committer | Stefano Sabatini <stefasab@gmail.com> | 2013-12-02 15:21:52 +0100 |
commit | c490cd4c1ae36246e9ae510c252dce65a432c125 (patch) | |
tree | 525804c7f7ccbcdc65987ba98de29869b3f74eb2 /doc/examples | |
parent | 893f33e7f005734dcd3d842da17630de41eda402 (diff) | |
download | ffmpeg-c490cd4c1ae36246e9ae510c252dce65a432c125.tar.gz |
doc/examples/filtering_audio: fix chunked audio decoding
Support the case when multiple frames are contained in a single packet.
In particular, fix fate-samples/lossless-audio/luckynight-partial.shn
sample decoding.
Diffstat (limited to 'doc/examples')
-rw-r--r-- | doc/examples/filtering_audio.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/doc/examples/filtering_audio.c b/doc/examples/filtering_audio.c index 0be26543d1..5802d90264 100644 --- a/doc/examples/filtering_audio.c +++ b/doc/examples/filtering_audio.c @@ -196,7 +196,7 @@ static void print_frame(const AVFrame *frame) int main(int argc, char **argv) { int ret; - AVPacket packet; + AVPacket packet0, packet; AVFrame *frame = av_frame_alloc(); AVFrame *filt_frame = av_frame_alloc(); int got_frame; @@ -220,9 +220,13 @@ int main(int argc, char **argv) goto end; /* read all packets */ + packet.data = NULL; while (1) { - if ((ret = av_read_frame(fmt_ctx, &packet)) < 0) - break; + if (!packet0.data) { + if ((ret = av_read_frame(fmt_ctx, &packet)) < 0) + break; + packet0 = packet; + } if (packet.stream_index == audio_stream_index) { avcodec_get_frame_defaults(frame); @@ -232,6 +236,8 @@ int main(int argc, char **argv) av_log(NULL, AV_LOG_ERROR, "Error decoding audio\n"); continue; } + packet.size -= ret; + packet.data += ret; if (got_frame) { /* push the audio data from decoded frame into the filtergraph */ @@ -251,8 +257,13 @@ int main(int argc, char **argv) av_frame_unref(filt_frame); } } + + if (packet.size <= 0) + av_free_packet(&packet0); + } else { + /* discard non-wanted packets */ + av_free_packet(&packet0); } - av_free_packet(&packet); } end: avfilter_graph_free(&filter_graph); |