Function ff_samples_from_time_base

libavcodec/encode.h:105–112

* Rescale from time base to AVCodecContext.sample_rate. */

 * Rescale from time base to AVCodecContext.sample_rate.
 */
static av_always_inline int64_t ff_samples_from_time_base(const AVCodecContext *avctx,
                                                          int64_t duration)
{
    if (!duration)
        return duration;
    return av_rescale_q(duration, avctx->time_base,
                        (AVRational){ 1, avctx->sample_rate });
}

/**
 * Check if the elements of codec context matrices (intra_matrix, inter_matrix or