#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
+#include "libavutil/timestamp.h"
#include "avfilter.h"
#include "formats.h"
#include "audio.h"
#include "video.h"
#include "internal.h"
+#include "float.h"
typedef struct AudioPhaseMeterContext {
const AVClass *class;
AVFrame *out;
int do_video;
+ int do_phasing_detection;
int w, h;
AVRational frame_rate;
int contrast[4];
uint8_t *mpc_str;
uint8_t mpc[4];
int draw_median_phase;
+ int is_mono;
+ int is_out_phase;
+ int start_mono_presence;
+ int start_out_phase_presence;
+ float tolerance;
+ float angle;
+ float phase;
+ AVRational time_base;
+ int64_t duration;
+ int64_t frame_end;
+ int64_t mono_idx[2];
+ int64_t out_phase_idx[2];
} AudioPhaseMeterContext;
+#define MAX_DURATION (24*60*60*1000000LL)
#define OFFSET(x) offsetof(AudioPhaseMeterContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+#define get_duration(index) (index[1] - index[0])
static const AVOption aphasemeter_options[] = {
{ "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
{ "bc", "set blue contrast", OFFSET(contrast[2]), AV_OPT_TYPE_INT, {.i64=1}, 0, 255, FLAGS },
{ "mpc", "set median phase color", OFFSET(mpc_str), AV_OPT_TYPE_STRING, {.str = "none"}, 0, 0, FLAGS },
{ "video", "set video output", OFFSET(do_video), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
+ { "phasing", "set mono and out-of-phase detection output", OFFSET(do_phasing_detection), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
+ { "tolerance", "set phase tolerance for mono detection", OFFSET(tolerance), AV_OPT_TYPE_FLOAT, {.dbl = 0.}, 0, 1, FLAGS },
+ { "t", "set phase tolerance for mono detection", OFFSET(tolerance), AV_OPT_TYPE_FLOAT, {.dbl = 0.}, 0, 1, FLAGS },
+ { "angle", "set angle threshold for out-of-phase detection", OFFSET(angle), AV_OPT_TYPE_FLOAT, {.dbl = 170.}, 90, 180, FLAGS },
+ { "a", "set angle threshold for out-of-phase detection", OFFSET(angle), AV_OPT_TYPE_FLOAT, {.dbl = 170.}, 90, 180, FLAGS },
+ { "duration", "set minimum mono or out-of-phase duration in seconds", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=2000000}, 0, MAX_DURATION, FLAGS },
+ { "d", "set minimum mono or out-of-phase duration in seconds", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=2000000}, 0, MAX_DURATION, FLAGS },
{ NULL }
};
int ret;
formats = ff_make_format_list(sample_fmts);
- if ((ret = ff_formats_ref (formats, &inlink->out_formats )) < 0 ||
- (ret = ff_formats_ref (formats, &outlink->in_formats )) < 0 ||
+ if ((ret = ff_formats_ref (formats, &inlink->outcfg.formats )) < 0 ||
+ (ret = ff_formats_ref (formats, &outlink->incfg.formats )) < 0 ||
(ret = ff_add_channel_layout (&layout, AV_CH_LAYOUT_STEREO )) < 0 ||
- (ret = ff_channel_layouts_ref (layout , &inlink->out_channel_layouts)) < 0 ||
- (ret = ff_channel_layouts_ref (layout , &outlink->in_channel_layouts)) < 0)
+ (ret = ff_channel_layouts_ref (layout , &inlink->outcfg.channel_layouts)) < 0 ||
+ (ret = ff_channel_layouts_ref (layout , &outlink->incfg.channel_layouts)) < 0)
return ret;
formats = ff_all_samplerates();
- if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0 ||
- (ret = ff_formats_ref(formats, &outlink->in_samplerates)) < 0)
+ if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0 ||
+ (ret = ff_formats_ref(formats, &outlink->incfg.samplerates)) < 0)
return ret;
if (s->do_video) {
AVFilterLink *outlink = ctx->outputs[1];
formats = ff_make_format_list(pix_fmts);
- if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+ if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
return ret;
}
AVFilterContext *ctx = inlink->dst;
AudioPhaseMeterContext *s = ctx->priv;
int nb_samples;
+ s->duration = av_rescale(s->duration, inlink->sample_rate, AV_TIME_BASE);
if (s->do_video) {
- nb_samples = FFMAX(1024, ((double)inlink->sample_rate / av_q2d(s->frame_rate)) + 0.5);
+ nb_samples = FFMAX(1, av_rescale(inlink->sample_rate, s->frame_rate.den, s->frame_rate.num));
inlink->partial_buf_size =
inlink->min_samples =
inlink->max_samples = nb_samples;
return (phase + 1.) / 2. * (w - 1);
}
+static inline void add_metadata(AVFrame *insamples, const char *key, char *value)
+{
+ char buf[128];
+
+ snprintf(buf, sizeof(buf), "lavfi.aphasemeter.%s", key);
+ av_dict_set(&insamples->metadata, buf, value, 0);
+}
+
+static inline void update_mono_detection(AudioPhaseMeterContext *s, AVFrame *insamples, int mono_measurement)
+{
+ int64_t mono_duration;
+ if (!s->is_mono && mono_measurement) {
+ s->is_mono = 1;
+ s->start_mono_presence = 1;
+ s->mono_idx[0] = insamples->pts;
+ }
+ if (s->is_mono && mono_measurement && s->start_mono_presence) {
+ s->mono_idx[1] = s->frame_end;
+ mono_duration = get_duration(s->mono_idx);
+ if (mono_duration >= s->duration) {
+ add_metadata(insamples, "mono_start", av_ts2timestr(s->mono_idx[0], &s->time_base));
+ av_log(s, AV_LOG_INFO, "mono_start: %s\n", av_ts2timestr(s->mono_idx[0], &s->time_base));
+ s->start_mono_presence = 0;
+ }
+ }
+ if (s->is_mono && !mono_measurement) {
+ s->mono_idx[1] = insamples ? insamples->pts : s->frame_end;
+ mono_duration = get_duration(s->mono_idx);
+ if (mono_duration >= s->duration) {
+ if (insamples) {
+ add_metadata(insamples, "mono_end", av_ts2timestr(s->mono_idx[1], &s->time_base));
+ add_metadata(insamples, "mono_duration", av_ts2timestr(mono_duration, &s->time_base));
+ }
+ av_log(s, AV_LOG_INFO, "mono_end: %s | mono_duration: %s\n", av_ts2timestr(s->mono_idx[1], &s->time_base), av_ts2timestr(mono_duration, &s->time_base));
+ }
+ s->is_mono = 0;
+ }
+}
+
+static inline void update_out_phase_detection(AudioPhaseMeterContext *s, AVFrame *insamples, int out_phase_measurement)
+{
+ int64_t out_phase_duration;
+ if (!s->is_out_phase && out_phase_measurement) {
+ s->is_out_phase = 1;
+ s->start_out_phase_presence = 1;
+ s->out_phase_idx[0] = insamples->pts;
+ }
+ if (s->is_out_phase && out_phase_measurement && s->start_out_phase_presence) {
+ s->out_phase_idx[1] = s->frame_end;
+ out_phase_duration = get_duration(s->out_phase_idx);
+ if (out_phase_duration >= s->duration) {
+ add_metadata(insamples, "out_phase_start", av_ts2timestr(s->out_phase_idx[0], &s->time_base));
+ av_log(s, AV_LOG_INFO, "out_phase_start: %s\n", av_ts2timestr(s->out_phase_idx[0], &s->time_base));
+ s->start_out_phase_presence = 0;
+ }
+ }
+ if (s->is_out_phase && !out_phase_measurement) {
+ s->out_phase_idx[1] = insamples ? insamples->pts : s->frame_end;
+ out_phase_duration = get_duration(s->out_phase_idx);
+ if (out_phase_duration >= s->duration) {
+ if (insamples) {
+ add_metadata(insamples, "out_phase_end", av_ts2timestr(s->out_phase_idx[1], &s->time_base));
+ add_metadata(insamples, "out_phase_duration", av_ts2timestr(out_phase_duration, &s->time_base));
+ }
+ av_log(s, AV_LOG_INFO, "out_phase_end: %s | out_phase_duration: %s\n", av_ts2timestr(s->out_phase_idx[1], &s->time_base), av_ts2timestr(out_phase_duration, &s->time_base));
+ }
+ s->is_out_phase = 0;
+ }
+}
+
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
AVFrame *out;
uint8_t *dst;
int i;
+ int mono_measurement;
+ int out_phase_measurement;
+ float tolerance = 1.0f - s->tolerance;
+ float angle = cosf(s->angle/180.0f*M_PI);
if (s->do_video && (!s->out || s->out->width != outlink->w ||
s->out->height != outlink->h)) {
fphase += phase;
}
fphase /= in->nb_samples;
+ s->phase = fphase;
if (s->do_video) {
if (s->draw_median_phase) {
uint8_t value[128];
snprintf(value, sizeof(value), "%f", fphase);
- av_dict_set(metadata, "lavfi.aphasemeter.phase", value, 0);
+ add_metadata(in, "phase", value);
+ }
+
+ if (s->do_phasing_detection) {
+ s->time_base = inlink->time_base;
+ s->frame_end = in->pts + av_rescale_q(in->nb_samples,
+ (AVRational){ 1, in->sample_rate }, inlink->time_base);
+
+ mono_measurement = (tolerance - fphase) < FLT_EPSILON;
+ out_phase_measurement = (angle - fphase) > FLT_EPSILON;
+
+ update_mono_detection(s, in, mono_measurement);
+ update_out_phase_detection(s, in, out_phase_measurement);
}
if (s->do_video) {
+ AVFrame *clone;
+
s->out->pts = in->pts;
- ff_filter_frame(outlink, av_frame_clone(s->out));
+ clone = av_frame_clone(s->out);
+ if (!clone)
+ return AVERROR(ENOMEM);
+ ff_filter_frame(outlink, clone);
}
return ff_filter_frame(aoutlink, in);
}
static av_cold void uninit(AVFilterContext *ctx)
{
AudioPhaseMeterContext *s = ctx->priv;
- int i;
+ if (s->do_phasing_detection) {
+ update_mono_detection(s, NULL, 0);
+ update_out_phase_detection(s, NULL, 0);
+ }
av_frame_free(&s->out);
- for (i = 0; i < ctx->nb_outputs; i++)
- av_freep(&ctx->output_pads[i].name);
}
static av_cold int init(AVFilterContext *ctx)
int ret;
pad = (AVFilterPad){
- .name = av_strdup("out0"),
+ .name = "out0",
.type = AVMEDIA_TYPE_AUDIO,
};
- if (!pad.name)
- return AVERROR(ENOMEM);
ret = ff_insert_outpad(ctx, 0, &pad);
- if (ret < 0) {
- av_freep(&pad.name);
+ if (ret < 0)
return ret;
- }
if (s->do_video) {
pad = (AVFilterPad){
- .name = av_strdup("out1"),
+ .name = "out1",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_video_output,
};
- if (!pad.name)
- return AVERROR(ENOMEM);
ret = ff_insert_outpad(ctx, 1, &pad);
- if (ret < 0) {
- av_freep(&pad.name);
+ if (ret < 0)
return ret;
- }
}
return 0;
{ NULL }
};
-AVFilter ff_avf_aphasemeter = {
+const AVFilter ff_avf_aphasemeter = {
.name = "aphasemeter",
.description = NULL_IF_CONFIG_SMALL("Convert input audio to phase meter video output."),
.init = init,
projects / ffmpeg / blobdiff