/* misc */
int loglevel; ///< log level for frame logging
int metadata; ///< whether or not to inject loudness results in frames
+ int dual_mono; ///< whether or not to treat single channel input files as dual-mono
+ double pan_law; ///< pan law value used to calulate dual-mono measurements
} EBUR128Context;
enum {
#define V AV_OPT_FLAG_VIDEO_PARAM
#define F AV_OPT_FLAG_FILTERING_PARAM
static const AVOption ebur128_options[] = {
- { "video", "set video output", OFFSET(do_video), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, V|F },
+ { "video", "set video output", OFFSET(do_video), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, V|F },
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x480"}, 0, 0, V|F },
{ "meter", "set scale meter (+9 to +18)", OFFSET(meter), AV_OPT_TYPE_INT, {.i64 = 9}, 9, 18, V|F },
{ "framelog", "force frame logging level", OFFSET(loglevel), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, A|V|F, "level" },
{ "none", "disable any peak mode", 0, AV_OPT_TYPE_CONST, {.i64 = PEAK_MODE_NONE}, INT_MIN, INT_MAX, A|F, "mode" },
{ "sample", "enable peak-sample mode", 0, AV_OPT_TYPE_CONST, {.i64 = PEAK_MODE_SAMPLES_PEAKS}, INT_MIN, INT_MAX, A|F, "mode" },
{ "true", "enable true-peak mode", 0, AV_OPT_TYPE_CONST, {.i64 = PEAK_MODE_TRUE_PEAKS}, INT_MIN, INT_MAX, A|F, "mode" },
+ { "dualmono", "treat mono input files as dual-mono", OFFSET(dual_mono), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, A|F },
+ { "panlaw", "set a specific pan law for dual-mono files", OFFSET(pan_law), AV_OPT_TYPE_DOUBLE, {.dbl = -3.01029995663978}, -10.0, 0.0, A|F },
{ NULL },
};
}
if (nb_integrated)
ebur128->integrated_loudness = LOUDNESS(integrated_sum / nb_integrated);
+ /* dual-mono correction */
+ if (nb_channels == 1 && ebur128->dual_mono) {
+ ebur128->integrated_loudness -= ebur128->pan_law;
+ }
}
/* LRA */
}
}
+ /* dual-mono correction */
+ if (nb_channels == 1 && ebur128->dual_mono) {
+ loudness_400 -= ebur128->pan_law;
+ loudness_3000 -= ebur128->pan_law;
+ }
+
#define LOG_FMT "M:%6.1f S:%6.1f I:%6.1f LUFS LRA:%6.1f LU"
/* push one video frame */
int i;
EBUR128Context *ebur128 = ctx->priv;
+ /* dual-mono correction */
+ if (ebur128->nb_channels == 1 && ebur128->dual_mono) {
+ ebur128->i400.rel_threshold -= ebur128->pan_law;
+ ebur128->i3000.rel_threshold -= ebur128->pan_law;
+ ebur128->lra_low -= ebur128->pan_law;
+ ebur128->lra_high -= ebur128->pan_law;
+ }
+
av_log(ctx, AV_LOG_INFO, "Summary:\n\n"
" Integrated loudness:\n"
" I: %5.1f LUFS\n"