seek_internal()

bool MayaFlux::IO::SoundFileReader::seek_internal ( const std::shared_ptr< FFmpegDemuxContext > &  demux, const std::shared_ptr< AudioStreamContext > &  audio, uint64_t  frame_position  )

private

Seek the demuxer and flush the codec to the given frame position.

Parameters

ctx	FFmpeg context.
frame_position	Target frame position.

Returns

True if seek succeeded.

Caller must hold an exclusive lock on m_context_mutex.

Definition at line 421 of file SoundFileReader.cpp.

{
    if (frame_position > audio->total_frames)
        frame_position = audio->total_frames;
 
    if (audio->sample_rate == 0) {
        set_error("Invalid sample rate");
        return false;
    }
 
    AVStream* stream = demux->get_stream(audio->stream_index);
    if (!stream) {
        set_error("Invalid stream index");
        return false;
    }
 
    int64_t ts = av_rescale_q(
        static_cast<int64_t>(frame_position),
        AVRational { .num = 1, .den = static_cast<int>(audio->sample_rate) },
        stream->time_base);
 
    if (!demux->seek(audio->stream_index, ts)) {
        set_error(demux->last_error());
        return false;
    }
 
    audio->flush_codec();
    audio->drain_resampler_init();
    m_current_frame_position = frame_position;
    return true;
}

References m_current_frame_position, and set_error().

Referenced by read_frames(), and seek().

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