35 static const char *
const var_names[] = {
"VOLUME",
"CHANNEL",
"PEAK",
NULL };
71 #define OFFSET(x) offsetof(ShowVolumeContext, x)
72 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
151 for (
i = 0;
i < nb_samples;
i++)
159 for (
i = 0;
i < nb_samples;
i++)
189 if (
s->draw_persistent_duration > 0.) {
190 s->persistent_max_frames = (
int)
FFMAX(
av_q2d(
s->frame_rate) *
s->draw_persistent_duration, 1.);
191 s->max_persistent =
av_calloc(inlink->
channels *
s->persistent_max_frames,
sizeof(*
s->max_persistent));
192 s->nb_frames_max_display =
av_calloc(inlink->
channels *
s->persistent_max_frames,
sizeof(*
s->nb_frames_max_display));
203 if (
s->orientation) {
214 for (ch = 0; ch < inlink->
channels; ch++) {
217 for (
i = 0;
i <
s->w;
i++) {
218 float max =
i / (float)(
s->w - 1);
238 for (
i = 0; txt[
i];
i++) {
242 for (char_y = font_height - 1; char_y >= 0; char_y--) {
245 if (font[txt[
i] * font_height + font_height - 1 - char_y] &
mask)
252 for (char_y = 0; char_y < font_height; char_y++) {
254 if (font[txt[
i] * font_height + char_y] &
mask)
267 const uint32_t bg = (uint32_t)(
s->bgopacity * 255) << 24;
269 for (
i = 0;
i < outlink->
h;
i++) {
270 uint32_t *dst = (uint32_t *)(
s->out->data[0] +
i *
s->out->linesize[0]);
271 for (j = 0; j < outlink->
w; j++)
279 if (
s->display_scale ==
LINEAR) {
284 if (
s->orientation) {
285 return outlink->
h - outlink->
h * max_val;
287 return s->w * max_val;
294 if ((
max >=
s->max_persistent[
channel]) || (
s->nb_frames_max_display[
channel] >=
s->persistent_max_frames)) {
296 s->nb_frames_max_display[
channel] = 0;
298 s->nb_frames_max_display[
channel] += 1;
305 if (
s->orientation) {
306 uint8_t *dst =
s->out->data[0] + max_draw *
s->out->linesize[0] +
channel * (
s->b +
s->h) * 4;
307 for (k = 0; k <
s->h; k++) {
308 memcpy(dst + k * 4,
s->persistant_max_rgba,
sizeof(
s->persistant_max_rgba));
311 for (k = 0; k <
s->h; k++) {
313 memcpy(dst + max_draw * 4,
s->persistant_max_rgba,
sizeof(
s->persistant_max_rgba));
323 const int step =
s->step;
324 int c, j, k, max_draw;
327 if (!
s->out ||
s->out->width != outlink->
w ||
328 s->out->height != outlink->
h) {
337 s->out->pts = insamples->
pts;
339 if ((
s->f < 1.) && (
s->f > 0.)) {
340 for (j = 0; j < outlink->
h; j++) {
341 uint8_t *dst =
s->out->data[0] + j *
s->out->linesize[0];
342 const uint32_t
alpha =
s->bgopacity * 255;
344 for (k = 0; k < outlink->
w; k++) {
345 dst[k * 4 + 0] =
FFMAX(dst[k * 4 + 0] *
s->f, 0);
346 dst[k * 4 + 1] =
FFMAX(dst[k * 4 + 1] *
s->f, 0);
347 dst[k * 4 + 2] =
FFMAX(dst[k * 4 + 2] *
s->f, 0);
348 dst[k * 4 + 3] =
FFMAX(dst[k * 4 + 3] *
s->f,
alpha);
351 }
else if (
s->f == 0.) {
355 if (
s->orientation) {
358 uint32_t *lut =
s->color_lut +
s->w *
c;
368 for (j = max_draw; j <
s->w; j++) {
369 uint8_t *dst =
s->out->data[0] + j *
s->out->linesize[0] +
c * (
s->b +
s->h) * 4;
370 for (k = 0; k <
s->h; k++) {
371 AV_WN32A(&dst[k * 4], lut[
s->w - j - 1]);
377 if (
s->h >= 8 &&
s->draw_text) {
384 if (
s->draw_persistent_duration > 0.) {
393 uint32_t *lut =
s->color_lut +
s->w *
c;
403 for (j = 0; j <
s->h; j++) {
404 uint8_t *dst =
s->out->data[0] + (
c *
s->h +
c *
s->b + j) *
s->out->linesize[0];
406 for (k = 0; k < max_draw; k++) {
413 if (
s->h >= 8 &&
s->draw_text) {
420 if (
s->draw_persistent_duration > 0.) {
435 for (
c = 0;
c < inlink->
channels &&
s->h >= 8 &&
s->draw_volume;
c++) {
438 if (
s->orientation) {
502 .
name =
"showvolume",
511 .priv_class = &showvolume_class,
static enum AVSampleFormat sample_fmts[]
static const AVFilterPad inputs[]
static const AVFilterPad outputs[]
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
static const AVFilterPad showvolume_outputs[]
static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
AVFILTER_DEFINE_CLASS(showvolume)
static void draw_max_line(ShowVolumeContext *s, int max_draw, int channel)
static void find_rms(float *src, int nb_samples, float *rms, float factor)
static const AVFilterPad showvolume_inputs[]
static int query_formats(AVFilterContext *ctx)
static int calc_max_draw(ShowVolumeContext *s, AVFilterLink *outlink, float max)
static const AVOption showvolume_options[]
static int config_input(AVFilterLink *inlink)
static void clear_picture(ShowVolumeContext *s, AVFilterLink *outlink)
AVFilter ff_avf_showvolume
static void drawtext(AVFrame *pic, int x, int y, const char *txt, int o)
static const char *const var_names[]
static int activate(AVFilterContext *ctx)
static av_cold int init(AVFilterContext *ctx)
static av_cold void uninit(AVFilterContext *ctx)
static void calc_persistent_max(ShowVolumeContext *s, float max, int channel)
static int config_output(AVFilterLink *outlink)
static void find_peak(float *src, int nb_samples, float *peak, float factor)
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
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.
Main libavfilter public API header.
audio channel layout utility functions
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
mode
Use these values in ebur128_init (or'ed).
channel
Use these values when setting the channel map with ebur128_set_channel().
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
simple arithmetic expression evaluator
#define FF_FILTER_FORWARD_WANTED(outlink, inlink)
Forward the frame_wanted_out flag from an output link to an input link.
#define FF_FILTER_FORWARD_STATUS(inlink, outlink)
Acknowledge the status on an input link and forward it to an output link.
#define FFERROR_NOT_READY
Filters implementation helper functions.
#define FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink)
Forward the status on an output link to an input link.
@ AV_OPT_TYPE_VIDEO_RATE
offset must point to AVRational
uint64_t av_channel_layout_extract_channel(uint64_t channel_layout, int index)
Get the channel with the given index in channel_layout.
const char * av_get_channel_name(uint64_t channel)
Get the name of a given channel.
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
int av_frame_make_writable(AVFrame *frame)
Ensure that the frame data is writable, avoiding data copy if possible.
static double av_q2d(AVRational a)
Convert an AVRational to a double.
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
AVSampleFormat
Audio sample formats.
@ AV_SAMPLE_FMT_FLTP
float, planar
static const int16_t alpha[]
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static enum AVPixelFormat pix_fmts[]
static const uint16_t mask[17]
enum MovChannelLayoutTag * layouts
AVPixelFormat
Pixel format.
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
typedef void(RENAME(mix_any_func_type))
Describe the class of an AVClass context structure.
A list of supported channel layouts.
AVFilterLink ** inputs
array of pointers to input links
void * priv
private data for use by the filter
A link between two filters.
AVFilterFormatsConfig incfg
Lists of supported formats / etc.
int w
agreed upon image width
int h
agreed upon image height
int channels
Number of channels.
AVFilterFormatsConfig outcfg
Lists of supported formats / etc.
AVFilterContext * src
source filter
int sample_rate
samples per second
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown or variable; if left to 0/0,...
AVFilterContext * dst
dest filter
A filter pad used for either input or output.
const char * name
Pad name.
const char * name
Filter name.
This structure describes decoded (raw) audio or video data.
int nb_samples
number of audio samples (per channel) described by this frame
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
uint64_t channel_layout
Channel layout of the audio data.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
uint8_t ** extended_data
pointers to the data planes/channels.
Rational number (pair of numerator and denominator).
int * nb_frames_max_display
int persistent_max_frames
double draw_persistent_duration
uint8_t persistant_max_rgba[4]
void(* meter)(float *src, int nb_samples, float *max, float factor)
static void draw_text(FFDrawContext *draw, AVFrame *frame, FFDrawColor *color, int x0, int y0, const uint8_t *text, int vertical)
static const int factor[16]
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
const uint8_t avpriv_cga_font[2048]
CGA/EGA/VGA ROM font data.