setup_resampler()

bool MayaFlux::IO::AudioStreamContext::setup_resampler ( bool  planar_output, uint32_t  target_rate  )

private

Definition at line 108 of file AudioStreamContext.cpp.

{
    if (!codec_context)
        return false;
 
    AVChannelLayout out_layout;
    av_channel_layout_copy(&out_layout, &codec_context->ch_layout);
 
    uint32_t out_rate = target_rate > 0 ? target_rate : sample_rate;
    AVSampleFormat out_fmt = planar_output ? AV_SAMPLE_FMT_DBLP : AV_SAMPLE_FMT_DBL;
 
    int ret = swr_alloc_set_opts2(
        &swr_context,
        &out_layout, out_fmt, static_cast<int>(out_rate),
        &codec_context->ch_layout, codec_context->sample_fmt, codec_context->sample_rate,
        0, nullptr);
 
    av_channel_layout_uninit(&out_layout);
 
    if (ret < 0 || !swr_context) {
        m_last_error = "swr_alloc_set_opts2 failed";
        return false;
    }
 
    if (swr_init(swr_context) < 0) {
        m_last_error = "swr_init failed";
        swr_free(&swr_context);
        swr_context = nullptr;
        return false;
    }
 
    return true;
}

References codec_context, m_last_error, sample_rate, and swr_context.

Referenced by open().

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