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66 #define MAX_DURATION (24*60*60*1000000LL)
67 #define OFFSET(x) offsetof(AudioPhaseMeterContext, x)
68 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
69 #define get_duration(index) (index[1] - index[0])
81 {
"phasing",
"set mono and out-of-phase detection output",
OFFSET(do_phasing_detection),
AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1,
FLAGS },
103 { .nb_channels = 0 },
151 if (!strcmp(
s->mpc_str,
"none"))
152 s->draw_median_phase = 0;
154 s->draw_median_phase = 1;
161 static inline int get_x(
float phase,
int w)
163 return (phase + 1.
f) / 2.f * (
w - 1.f);
170 snprintf(buf,
sizeof(buf),
"lavfi.aphasemeter.%s",
key);
177 if (!
s->is_mono && mono_measurement) {
179 s->start_mono_presence = 1;
180 s->mono_idx[0] = insamples->
pts;
182 if (
s->is_mono && mono_measurement &&
s->start_mono_presence) {
183 s->mono_idx[1] =
s->frame_end;
185 if (mono_duration >=
s->duration) {
188 s->start_mono_presence = 0;
191 if (
s->is_mono && !mono_measurement) {
192 s->mono_idx[1] = insamples ? insamples->
pts :
s->frame_end;
194 if (mono_duration >=
s->duration) {
208 if (!
s->is_out_phase && out_phase_measurement) {
210 s->start_out_phase_presence = 1;
211 s->out_phase_idx[0] = insamples->
pts;
213 if (
s->is_out_phase && out_phase_measurement &&
s->start_out_phase_presence) {
214 s->out_phase_idx[1] =
s->frame_end;
216 if (out_phase_duration >=
s->duration) {
219 s->start_out_phase_presence = 0;
222 if (
s->is_out_phase && !out_phase_measurement) {
223 s->out_phase_idx[1] = insamples ? insamples->
pts :
s->frame_end;
225 if (out_phase_duration >=
s->duration) {
243 const int rc =
s->contrast[0];
244 const int gc =
s->contrast[1];
245 const int bc =
s->contrast[2];
250 int mono_measurement;
251 int out_phase_measurement;
252 float tolerance = 1.0f -
s->tolerance;
256 if (
s->do_video && (!
s->out ||
s->out->width != outlink->
w ||
257 s->out->height != outlink->
h)) {
266 for (
i = 0;
i < outlink->
h;
i++)
267 memset(
out->data[0] +
i *
out->linesize[0], 0, outlink->
w * 4);
268 }
else if (
s->do_video) {
273 for (
i = outlink->
h - 1;
i >= 10;
i--)
274 memmove(
out->data[0] + (
i ) *
out->linesize[0],
275 out->data[0] + (
i-1) *
out->linesize[0],
277 for (
i = 0;
i < outlink->
w;
i++)
282 const float *
src = (
float *)in->
data[0] +
i * 2;
284 const float phase =
isnan(
f) ? 1 :
f;
285 const int x =
get_x(phase,
s->w);
288 dst =
out->data[0] + x * 4;
300 if (
s->draw_median_phase) {
305 for (
i = 1;
i < 10 &&
i < outlink->
h;
i++)
306 memcpy(
out->data[0] +
i *
out->linesize[0],
out->data[0], outlink->
w * 4);
317 if (
s->do_phasing_detection) {
318 s->time_base =
inlink->time_base;
322 mono_measurement = (tolerance - fphase) < FLT_EPSILON;
323 out_phase_measurement = (angle - fphase) > FLT_EPSILON;
331 if (
s->do_video && new_pts !=
s->last_pts) {
334 s->out->pts =
s->last_pts = new_pts;
335 s->out->duration = 1;
366 if (
s->nb_samples > 0)
388 if (
s->do_phasing_detection) {
432 .
name =
"aphasemeter",
441 .priv_class = &aphasemeter_class,
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
static const AVFilterPad inputs[]
static int config_video_output(AVFilterLink *outlink)
static int query_formats(const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
AVPixelFormat
Pixel format.
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
#define AV_CHANNEL_LAYOUT_STEREO
static av_cold int init(AVFilterContext *ctx)
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
static enum AVSampleFormat sample_fmts[]
enum MovChannelLayoutTag * layouts
int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen, void *log_ctx)
Put the RGBA values that correspond to color_string in rgba_color.
@ AV_OPT_TYPE_VIDEO_RATE
Underlying C type is AVRational.
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define FILTER_INPUTS(array)
This structure describes decoded (raw) audio or video data.
static int config_input(AVFilterLink *inlink)
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
@ AV_OPT_TYPE_DURATION
Underlying C type is int64_t.
const char * name
Filter name.
A link between two filters.
#define FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink)
Forward the status on an output link to an input link.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Link properties exposed to filter code, but not external callers.
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link's FIFO and update the link's stats.
int start_out_phase_presence
A filter pad used for either input or output.
static void update_out_phase_detection(AudioPhaseMeterContext *s, AVFrame *insamples, int out_phase_measurement)
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
static enum AVPixelFormat pix_fmts[]
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
int ff_inlink_make_frame_writable(AVFilterLink *link, AVFrame **rframe)
Make sure a frame is writable.
Describe the class of an AVClass context structure.
int ff_inlink_consume_samples(AVFilterLink *link, unsigned min, unsigned max, AVFrame **rframe)
Take samples from the link's FIFO and update the link's stats.
Rational number (pair of numerator and denominator).
static const AVOption aphasemeter_options[]
@ AV_OPT_TYPE_IMAGE_SIZE
Underlying C type is two consecutive integers.
static void update_mono_detection(AudioPhaseMeterContext *s, AVFrame *insamples, int mono_measurement)
AVFILTER_DEFINE_CLASS(aphasemeter)
static FilterLink * ff_filter_link(AVFilterLink *link)
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
static int get_x(float phase, int w)
#define av_ts2timestr(ts, tb)
Convenience macro, the return value should be used only directly in function arguments but never stan...
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
An AVChannelLayout holds information about the channel layout of audio data.
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
#define AV_NOPTS_VALUE
Undefined timestamp value.
AVFilterContext * src
source filter
FF_FILTER_FORWARD_WANTED(outlink, inlink)
#define AV_LOG_INFO
Standard information.
@ AV_OPT_TYPE_FLOAT
Underlying C type is float.
int nb_samples
number of audio samples (per channel) described by this frame
#define i(width, name, range_min, range_max)
int w
agreed upon image width
#define AV_TIME_BASE
Internal time base represented as integer.
AVSampleFormat
Audio sample formats.
const AVFilter ff_avf_aphasemeter
#define FILTER_QUERY_FUNC2(func)
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
const char * name
Pad name.
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
static int activate(AVFilterContext *ctx)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
static av_cold void uninit(AVFilterContext *ctx)
int h
agreed upon image height
@ AV_OPT_TYPE_INT
Underlying C type is int.
AVDictionary * metadata
metadata.
static void add_metadata(AVFrame *insamples, const char *key, char *value)
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link.
#define get_duration(index)
int ff_append_outpad(AVFilterContext *f, AVFilterPad *p)
@ AV_OPT_TYPE_BOOL
Underlying C type is int.
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
#define FF_FILTER_FORWARD_STATUS_ALL(inlink, filter)
Acknowledge the status on an input link and forward it to an output link.
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown or variable.
@ AV_OPT_TYPE_STRING
Underlying C type is a uint8_t* that is either NULL or points to a C string allocated with the av_mal...