int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align) { int line_size; int sample_size = av_get_bytes_per_sample(sample_fmt); int planar = av_sample_fmt_is_planar(sample_fmt); /* validate parameter ranges */ if (!sample_size || nb_samples <= 0 || nb_channels <= 0) /* auto-select alignment if not specified */ if (!align) { align = 1; nb_samples = FFALIGN(nb_samples, 32); } /* check for integer overflow */ if (nb_channels > INT_MAX / align || (int64_t)nb_channels * nb_samples > (INT_MAX - (align * nb_channels)) / sample_size) line_size = planar ? FFALIGN(nb_samples * sample_size, align) : FFALIGN(nb_samples * sample_size * nb_channels, align); if (linesize) *linesize = line_size; return planar ? line_size * nb_channels : line_size; }