52 #define OFFSET(x) offsetof(DrawGraphContext, x)
53 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
95 for (i = 0; i < 4; i++) {
143 for (i = 0; i < out->
height; i++)
144 for (j = 0; j < out->
width; j++)
205 for (i = 0; i < 4; i++) {
218 if (sscanf(e->
value,
"%f", &vf) != 1)
221 vf = av_clipf(vf, s->
min, s->
max);
235 if (i == 0 && (s->
x >= outlink->
w || s->
slide == 3)) {
240 s->
x = outlink->
w - 1;
241 for (j = 0; j < outlink->
h; j++) {
244 (outlink->
w - 1) * 4);
246 }
else if (s->
slide == 3) {
248 for (j = 0; j < outlink->
h; j++) {
251 (outlink->
w - 1) * 4);
253 }
else if (s->
slide == 0) {
259 y = (outlink->
h - 1) * (1 - ((vf - s->
min) / (s->
max - s->
min)));
263 if (i == 0 && (s->
slide > 0))
264 for (j = 0; j < outlink->
h; j++)
268 for (j = y; j < outlink->
h; j++) {
279 if (i == 0 && (s->
slide > 0))
280 for (j = 0; j < outlink->
h; j++)
290 if (i == 0 && (s->
slide > 0)) {
291 for (j = 0; j < y; j++)
293 for (j = outlink->
h - 1; j > y; j--)
296 if (y <= s->prev_y[i]) {
297 for (j = y; j <= s->
prev_y[i]; j++)
300 for (j = s->
prev_y[i]; j <= y; j++)
324 int ret, i, k, step, l;
333 for (i = 0; i < 4; i++) {
337 float vf = s->
values[i][k];
350 y = (outlink->
h - 1) * (1 - ((vf - s->
min) / (s->
max - s->
min)));
355 for (j = y; j < outlink->
h; j++) {
374 if (y <= s->prev_y[i]) {
375 for (j = y; j <= s->
prev_y[i]; j++)
378 for (j = s->
prev_y[i]; j <= y; j++)
417 for (i = 0; i < 4; i++)
429 #if CONFIG_DRAWGRAPH_FILTER
456 .priv_class = &drawgraph_class,
460 .
inputs = drawgraph_inputs,
464 #endif // CONFIG_DRAWGRAPH_FILTER
466 #if CONFIG_ADRAWGRAPH_FILTER
468 #define adrawgraph_options drawgraph_options
491 .
name =
"adrawgraph",
494 .priv_class = &adrawgraph_class,
498 .
inputs = adrawgraph_inputs,
501 #endif // CONFIG_ADRAWGRAPH_FILTER
static av_cold int init(AVFilterContext *ctx)
This structure describes decoded (raw) audio or video data.
static void draw_dot(int fg, int x, int y, AVFrame *out)
Main libavfilter public API header.
int h
agreed upon image height
static const char *const var_names[]
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.
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
const char * name
Pad name.
AVFilterLink ** inputs
array of pointers to input links
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
static const AVOption drawgraph_options[]
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
static void clear_image(DrawGraphContext *s, AVFrame *out, AVFilterLink *outlink)
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
#define AVERROR_EOF
End of file.
AVDictionary * metadata
metadata.
static av_cold void uninit(AVFilterContext *ctx)
A filter pad used for either input or output.
static int request_frame(AVFilterLink *outlink)
A link between two filters.
static int config_output(AVFilterLink *outlink)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
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
AVFilterFormats * in_formats
Lists of formats and channel layouts supported by the input and output filters respectively.
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
int w
agreed upon image width
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given buffer if it is not large enough, otherwise do nothing.
AVFilterContext * src
source filter
static const AVFilterPad outputs[]
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
static const AVFilterPad inputs[]
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
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
static enum AVPixelFormat pix_fmts[]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int query_formats(AVFilterContext *ctx)
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
AVFilterContext * dst
dest filter
#define AVFILTER_DEFINE_CLASS(fname)
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
AVPixelFormat
Pixel format.
mode
Use these values in ebur128_init (or'ed).
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
simple arithmetic expression evaluator