- int frame_finished;
- int const decode_result = avcodec_decode_audio4 (_audio_codec_context, _frame, &frame_finished, ©_packet);
- if (decode_result >= 0 && frame_finished) {
-
- /* Where we are in the source, in seconds */
- double const source_pts_seconds = av_q2d (_format_context->streams[copy_packet.stream_index]->time_base)
- * av_frame_get_best_effort_timestamp(_frame);
-
- /* We only decode audio if we've had our first video packet through, and if it
- was before this packet. Until then audio is thrown away.
- */
-
- if ((_first_video && _first_video.get() <= source_pts_seconds) || !_decode_video) {
-
- if (!_first_audio && _decode_video) {
- _first_audio = source_pts_seconds;
-
- /* This is our first audio frame, and if we've arrived here we must have had our
- first video frame. Push some silence to make up any gap between our first
- video frame and our first audio.
- */
-
- /* frames of silence that we must push */
- int const s = rint ((_first_audio.get() - _first_video.get()) * _ffmpeg_content->audio_frame_rate ());
-
- _film->log()->log (
- String::compose (
- N_("First video at %1, first audio at %2, pushing %3 audio frames of silence for %4 channels (%5 bytes per sample)"),
- _first_video.get(), _first_audio.get(), s, _ffmpeg_content->audio_channels(), bytes_per_audio_sample()
- )
- );
-
- if (s) {
- shared_ptr<AudioBuffers> audio (new AudioBuffers (_ffmpeg_content->audio_channels(), s));
- audio->make_silent ();
- Audio (audio);
- }
- }
-
- int const data_size = av_samples_get_buffer_size (
- 0, _audio_codec_context->channels, _frame->nb_samples, audio_sample_format (), 1
- );
-
- assert (_audio_codec_context->channels == _ffmpeg_content->audio_channels());
- Audio (deinterleave_audio (_frame->data, data_size));
- }
- }
+ if (rect->type != SUBTITLE_BITMAP) {
+ /* XXX */
+ // throw DecodeError (_("non-bitmap subtitles not yet supported"));
+ return;
+ }
+
+ /* Note RGBA is expressed little-endian, so the first byte in the word is R, second
+ G, third B, fourth A.
+ */
+ shared_ptr<Image> image (new Image (PIX_FMT_RGBA, dcp::Size (rect->w, rect->h), true));