+ if (ct < ContentTime()) {
+ /* Discard audio data that comes before time 0 */
+ auto const remove = min (int64_t(data->frames()), (-ct).frames_ceil(double(stream->frame_rate())));
+ data->move (data->frames() - remove, remove, 0);
+ data->set_frames (data->frames() - remove);
+ ct += ContentTime::from_frames (remove, stream->frame_rate());
+ }
+
+ if (ct < ContentTime()) {
+ LOG_WARNING (
+ "Crazy timestamp %1 for %2 samples in stream %3 (ts=%4 tb=%5, off=%6)",
+ to_string(ct),
+ data->frames(),
+ stream->id(),
+ _frame->best_effort_timestamp,
+ av_q2d(stream->stream(_format_context)->time_base),
+ to_string(_pts_offset)
+ );
+ }
+
+ /* Give this data provided there is some, and its time is sane */
+ if (ct >= ContentTime() && data->frames() > 0) {
+ audio->emit (film(), stream, data, ct);
+ }
+}
+
+
+void
+FFmpegDecoder::decode_and_process_audio_packet (AVPacket* packet)
+{
+ auto stream = audio_stream_from_index (packet->stream_index);
+ if (!stream) {
+ return;
+ }
+
+ auto context = _codec_context[stream->index(_format_context)];
+
+ int r = avcodec_send_packet (context, packet);
+ if (r < 0) {
+ LOG_WARNING("avcodec_send_packet returned %1 for an audio packet", r);
+ }
+ while (r >= 0) {
+ r = avcodec_receive_frame (context, _frame);
+ if (r == AVERROR(EAGAIN)) {
+ /* More input is required */
+ return;