72 static const char *
const var_names[] = {
"X",
"Y",
"W",
"H",
"N",
NULL };
77 #define OFFSET(x) offsetof(FFTFILTContext, x) 78 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM 95 static inline double lum(
void *priv,
double x,
double y,
int plane)
101 static double weight_Y(
void *priv,
double x,
double y) {
return lum(priv, x, y,
Y); }
102 static double weight_U(
void *priv,
double x,
double y) {
return lum(priv, x, y,
U); }
103 static double weight_V(
void *priv,
double x,
double y) {
return lum(priv, x, y,
V); }
109 for (i = w; i < w + (w2-
w)/2; i++)
110 dest[i] = dest[2*w - i - 1];
113 dest[i] = dest[w2 - i];
121 for (i = 0; i <
h; i++) {
122 for (j = 0; j <
w; j++)
128 for (i = 0; i <
h; i++)
134 const uint16_t *
src = (
const uint16_t *)in->
data[plane];
135 int linesize = in->
linesize[plane] / 2;
138 for (i = 0; i <
h; i++) {
139 for (j = 0; j <
w; j++)
145 for (i = 0; i <
h; i++)
154 for (i = 0; i < s->
rdft_hlen[plane]; i++) {
155 for (j = 0; j <
h; j++)
161 for (i = 0; i < s->
rdft_hlen[plane]; i++)
169 for (i = 0; i < s->
rdft_hlen[plane]; i++)
172 for (i = 0; i < s->
rdft_hlen[plane]; i++)
173 for (j = 0; j <
h; j++)
183 for (i = 0; i <
h; i++)
186 for (i = 0; i <
h; i++)
187 for (j = 0; j <
w; j++)
196 uint16_t *dst = (uint16_t *)out->
data[plane];
197 int linesize = out->
linesize[plane] / 2;
201 for (i = 0; i <
h; i++)
204 for (i = 0; i <
h; i++)
205 for (j = 0; j <
w; j++)
217 if (!s->
dc[
U] && !s->
dc[
V]) {
233 for (plane = 0; plane < 3; plane++) {
235 const char *
const func2_names[] = {
"weight_Y",
"weight_U",
"weight_V",
NULL };
239 NULL, NULL, func2_names,
func2, 0, ctx);
255 for (i = 0; i < s->
rdft_hlen[plane]; i++) {
257 for (j = 0; j < s->
rdft_vlen[plane]; j++) {
285 for (rdft_hbits = 1; 1 << rdft_hbits < w*10/9; rdft_hbits++);
297 for (rdft_vbits = 1; 1 << rdft_vbits < h*10/9; rdft_vbits++);
310 for (plane = 0; plane < 3; plane++) {
321 }
else if (s->
depth > 8) {
346 for (plane = 0; plane < s->
nb_planes; plane++) {
357 for (i = 0; i < s->
rdft_hlen[plane]; i++)
358 for (j = 0; j < s->
rdft_vlen[plane]; j++)
433 .description =
NULL_IF_CONFIG_SMALL(
"Apply arbitrary expressions to pixels in frequency domain."),
435 .priv_class = &fftfilt_class,
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
#define AV_PIX_FMT_YUV444P14
static double(*const func2[])(void *, double, double)
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
static av_cold int init(AVCodecContext *avctx)
int h
agreed upon image height
static void rdft_vertical(FFTFILTContext *s, int h, int plane)
#define AV_PIX_FMT_YUV420P12
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.
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
static void irdft_vertical(FFTFILTContext *s, int h, int plane)
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
static void rdft_horizontal16(FFTFILTContext *s, AVFrame *in, int w, int h, int plane)
void(* rdft_horizontal)(struct FFTFILTContext *s, AVFrame *in, int w, int h, int plane)
RDFTContext * hrdft[MAX_PLANES]
const char * name
Pad name.
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
int planewidth[MAX_PLANES]
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
static void irdft_horizontal8(FFTFILTContext *s, AVFrame *out, int w, int h, int plane)
size_t rdft_vlen[MAX_PLANES]
static void copy_rev(FFTSample *dest, int w, int w2)
FFTSample * rdft_vdata[MAX_PLANES]
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
#define AV_PIX_FMT_YUV444P16
AVFILTER_DEFINE_CLASS(fftfilt)
#define AV_PIX_FMT_YUV422P12
static const char *const var_names[]
static const AVFilterPad fftfilt_inputs[]
A filter pad used for either input or output.
A link between two filters.
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
size_t rdft_hlen[MAX_PLANES]
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. ...
static void rdft_horizontal8(FFTFILTContext *s, AVFrame *in, int w, int h, int plane)
void * priv
private data for use by the filter
static void irdft_horizontal16(FFTFILTContext *s, AVFrame *out, int w, int h, int plane)
#define AV_PIX_FMT_YUV444P10
static double weight_V(void *priv, double x, double y)
void av_rdft_calc(RDFTContext *s, FFTSample *data)
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int w
agreed upon image width
static const AVOption fftfilt_options[]
#define AV_PIX_FMT_YUV422P9
uint8_t nb_components
The number of components each pixel has, (1-4)
int rdft_vbits[MAX_PLANES]
char * weight_str[MAX_PLANES]
static double lum(void *priv, double x, double y, int plane)
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return values
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
void av_rdft_end(RDFTContext *s)
RDFTContext * av_rdft_init(int nbits, enum RDFTransformType trans)
Set up a real FFT.
#define AV_PIX_FMT_YUV444P9
static const AVFilterPad outputs[]
int format
agreed upon media format
int planeheight[MAX_PLANES]
RDFTContext * vrdft[MAX_PLANES]
#define AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P14
char * av_strdup(const char *s)
Duplicate a string.
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
static void do_eval(FFTFILTContext *s, AVFilterLink *inlink, int plane)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
double * weight[MAX_PLANES]
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
static int config_props(AVFilterLink *inlink)
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
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
#define AV_PIX_FMT_YUV420P10
Describe the class of an AVClass context structure.
static double weight_U(void *priv, double x, double y)
const char * name
Filter name.
#define AV_PIX_FMT_YUV420P9
AVFilterLink ** outputs
array of pointers to output links
static int query_formats(AVFilterContext *ctx)
#define AV_PIX_FMT_YUV422P14
#define flags(name, subs,...)
#define AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV444P12
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int rdft_hbits[MAX_PLANES]
static double weight_Y(void *priv, double x, double y)
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
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
static av_cold void uninit(AVFilterContext *ctx)
common internal and external API header
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static const char *const func2_names[]
AVExpr * weight_expr[MAX_PLANES]
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
AVFilterContext * dst
dest filter
void(* irdft_horizontal)(struct FFTFILTContext *s, AVFrame *out, int w, int h, int plane)
FFTSample * rdft_hdata[MAX_PLANES]
static const AVFilterPad fftfilt_outputs[]
RDFTContext * ihrdft[MAX_PLANES]
static av_cold int initialize(AVFilterContext *ctx)
#define av_malloc_array(a, b)
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
int depth
Number of bits in the component.
AVPixelFormat
Pixel format.
#define AV_PIX_FMT_YUV422P16
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
RDFTContext * ivrdft[MAX_PLANES]
simple arithmetic expression evaluator
#define AV_CEIL_RSHIFT(a, b)