59 #define OFFSET(x) offsetof(AudioHistogramContext, x) 60 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM 178 for (n = H; n < s->
h; n++) {
187 for (y = 0; y <
w; y++) {
194 for (n = 0; n <
H; n++) {
206 for (c = 0; c < inlink->
channels; c++) {
211 bin =
lrint(av_clipf(fabsf(src[n]), 0, 1) * (w - 1));
221 bin =
lrint(av_clipf(fabsf(src2[n]), 0, 1) * (w - 1));
229 for (c = 0; c < inlink->
channels; c++) {
234 bin =
lrint(av_clipf(1 + log10(fabsf(src[n])) / 6, 0, 1) * (w - 1));
244 bin =
lrint(av_clipf(1 + log10(fabsf(src2[n])) / 6, 0, 1) * (w - 1));
272 uf *= 0.5 * sin((2 * M_PI * c) / s->
dchannels);
273 vf *= 0.5 * cos((2 * M_PI * c) / s->
dchannels);
276 for (n = 0; n <
w; n++) {
280 a = achistogram[
n] - shistogram[
n];
284 aa = a / (double)acmax;
287 aa = sqrt(a) / sqrt(acmax);
296 aa = 1. -
log2(a + 1) /
log2(acmax + 1);
308 for (y = H - h; y <
H; y++) {
326 for (y = H - h; y <
H; y++) {
345 for (n = 0; n <
w; n++) {
356 for (p = 0; p < 4; p++) {
357 for (y = s->
h; y >= H + 1; y--) {
381 for (i = 0; i < 101; i++)
405 .
name =
"ahistogram",
410 .
inputs = audiovectorscope_inputs,
411 .
outputs = audiovectorscope_outputs,
412 .priv_class = &ahistogram_class,
static const AVFilterPad audiovectorscope_outputs[]
This structure describes decoded (raw) audio or video data.
Main libavfilter public API header.
int max_samples
Maximum number of samples to filter at once.
int h
agreed upon image height
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
const char * name
Pad name.
AVFilterLink ** inputs
array of pointers to input links
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static double cb(void *priv, double x, double y)
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
static int query_formats(AVFilterContext *ctx)
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
static const AVOption ahistogram_options[]
static double av_q2d(AVRational a)
Convert an AVRational to a double.
static int config_output(AVFilterLink *outlink)
A filter pad used for either input or output.
A link between two filters.
int min_samples
Minimum number of samples to filter at once.
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown or variable; if left to 0/0, will be automatically copied from the first input of the source filter if it exists.
int sample_rate
samples per second
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void * priv
private data for use by the filter
simple assert() macros that are a bit more flexible than ISO C assert().
struct AVFilterChannelLayouts * out_channel_layouts
static int config_input(AVFilterLink *inlink)
AVFilterFormats * in_formats
Lists of formats and channel layouts supported by the input and output filters respectively.
int w
agreed upon image width
AVFILTER_DEFINE_CLASS(ahistogram)
AVFilterContext * src
source filter
int partial_buf_size
Size of the partial buffer to allocate.
static const AVFilterPad inputs[]
AVFilterFormats * out_samplerates
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
static const AVFilterPad outputs[]
A list of supported channel layouts.
AVSampleFormat
Audio sample formats.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
offset must point to AVRational
const char * name
Filter name.
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
offset must point to two consecutive integers
AVFilterLink ** outputs
array of pointers to output links
enum MovChannelLayoutTag * layouts
static enum AVPixelFormat pix_fmts[]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static const AVFilterPad audiovectorscope_inputs[]
static av_cold void uninit(AVFilterContext *ctx)
int channels
Number of channels.
AVFilterContext * dst
dest filter
AVFilter ff_avf_ahistogram
static enum AVSampleFormat sample_fmts[]
#define av_malloc_array(a, b)
uint8_t ** extended_data
pointers to the data planes/channels.
AVPixelFormat
Pixel format.
int nb_samples
number of audio samples (per channel) described by this frame
AVFilterFormats * out_formats