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54 uint8_t *dst, ptrdiff_t dst_linesize,
55 int w,
int h,
float *
change,
float *orig);
58 #define OFFSET(x) offsetof(TMidEqualizerContext, x)
59 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
95 const float *
const kernel,
96 int nb_frames,
int radius,
int hsize,
99 const float *
const h1 = histograms[idx];
102 for (
int p1 = 0; p1 < hsize; p1++) {
106 for (
int j = 0; j < radius; j++) {
107 const int nidx = ((idx - radius + j) % nb_frames);
108 const float *
const h2 = histograms[nidx < 0 ? nidx + nb_frames: nidx];
111 for (; p2[k] < hsize && h2[p2[k]] < h1[p1]; p2[k]++);
116 sum += kernel[j] * p2[k];
119 for (
int j = radius + 1; j < nb_frames; j++) {
120 const int nidx = (idx - radius + j) % nb_frames;
121 const float *
const h2 = histograms[nidx < 0 ? nidx + nb_frames: nidx];
124 for (; p2[k] < hsize && h2[p2[k]] < h1[p1]; p2[k]++);
128 weight += kernel[j - radius - 1];
129 sum += kernel[j - radius - 1] * p2[k];
137 uint8_t *dst, ptrdiff_t dst_linesize,
138 int w,
int h,
float *change,
float *orig)
140 for (
int y = 0; y <
h; y++) {
141 for (
int x = 0; x <
w; x++)
150 uint8_t *ddst, ptrdiff_t dst_linesize,
151 int w,
int h,
float *change,
float *orig)
153 const uint16_t *
src = (
const uint16_t *)ssrc;
154 uint16_t *dst = (uint16_t *)ddst;
156 for (
int y = 0; y <
h; y++) {
157 for (
int x = 0; x <
w; x++)
160 dst += dst_linesize / 2;
161 src += src_linesize / 2;
174 int idx =
s->f_frames <
s->nb_frames ?
s->radius :
s->del_frame ?
s->del_frame - 1 :
s->nb_frames - 1;
176 if (
s->f_frames <
s->nb_frames) {
177 s->l_frames =
s->nb_frames -
s->f_frames;
187 if (
s->f_frames <
s->nb_frames) {
188 s->frames[
s->f_frames] = in;
190 for (
int p = 0; p <
s->nb_planes; p++) {
192 s->plane_width[p],
s->plane_height[p],
193 s->histogram[p][
s->f_frames],
199 while (
s->f_frames <=
s->radius) {
201 if (!
s->frames[
s->f_frames])
203 for (
int p = 0; p <
s->nb_planes; p++) {
204 memcpy(
s->histogram[p][
s->f_frames],
205 s->histogram[p][
s->f_frames - 1],
206 s->histogram_size *
sizeof(
float));
211 if (!eof &&
s->f_frames <
s->nb_frames) {
214 while (
s->f_frames <
s->nb_frames) {
216 if (!
s->frames[
s->f_frames])
218 for (
int p = 0; p <
s->nb_planes; p++) {
219 memcpy(
s->histogram[p][
s->f_frames],
220 s->histogram[p][
s->f_frames - 1],
221 s->histogram_size *
sizeof(
float));
226 s->cur_frame =
s->radius;
230 s->frames[
s->del_frame] = in;
232 for (
int p = 0; p <
s->nb_planes; p++) {
234 s->plane_width[p],
s->plane_height[p],
235 s->histogram[p][
s->del_frame],
240 if (
s->del_frame >=
s->nb_frames)
244 if (
ctx->is_disabled) {
245 const int idx =
s->cur_frame;
251 const int idx =
s->cur_frame;
259 for (
int p = 0; p <
s->nb_planes; p++) {
260 if (!((1 << p) &
s->planes)) {
262 s->plane_width[p] * (1 + (
s->depth > 8)),
s->plane_height[p]);
267 s->nb_frames,
s->radius,
s->histogram_size,
s->change[p], idx);
270 out->data[p],
out->linesize[p],
271 s->plane_width[p],
s->plane_height[p],
272 s->change[p],
s->histogram[p][idx]);
277 if (
s->cur_frame >=
s->nb_frames)
284 int w,
int h,
float *histogram,
size_t hsize)
286 memset(histogram, 0, hsize *
sizeof(*histogram));
288 for (
int y = 0; y <
h; y++) {
289 for (
int x = 0; x <
w; x++)
290 histogram[
src[x]] += 1;
294 for (
int x = 0; x < hsize; x++)
295 histogram[x] /= hsize;
297 for (
int x = 1; x < hsize; x++)
298 histogram[x] += histogram[x-1];
302 int w,
int h,
float *histogram,
size_t hsize)
304 const uint16_t *
src = (
const uint16_t *)ssrc;
306 memset(histogram, 0, hsize *
sizeof(*histogram));
308 for (
int y = 0; y <
h; y++) {
309 for (
int x = 0; x <
w; x++)
310 histogram[
src[x]] += 1;
314 for (
int x = 0; x < hsize; x++)
315 histogram[x] /= hsize;
317 for (
int x = 1; x < hsize; x++)
318 histogram[x] += histogram[x-1];
326 float sigma =
s->radius *
s->sigma;
329 s->depth =
desc->comp[0].depth;
330 s->nb_frames =
s->radius * 2 + 1;
334 vsub =
desc->log2_chroma_h;
336 s->plane_height[0] =
s->plane_height[3] =
inlink->h;
337 s->plane_width[0] =
s->plane_width[3] =
inlink->w;
341 s->histogram_size = 1 <<
s->depth;
343 for (
int n = 0; n <
s->radius; n++)
344 s->kernel[n] =
expf(-0.5 * (n + 1) * (n + 1) / (sigma * sigma));
346 for (
int p = 0; p <
s->nb_planes; p++) {
347 for (
int n = 0; n <
s->nb_frames; n++) {
348 s->histogram[p][n] =
av_calloc(
s->histogram_size,
sizeof(
float));
349 if (!
s->histogram[p][n])
353 s->change[p] =
av_calloc(
s->histogram_size,
sizeof(
float));
359 s->frames =
av_calloc(
s->nb_frames,
sizeof(*
s->frames));
387 for (
int n = 0; n < nb_frames; n++)
401 for (
int i = 0;
i <
s->nb_frames &&
s->frames;
i++)
424 .
name =
"tmidequalizer",
431 .priv_class = &tmidequalizer_class,
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
#define AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_GBRAP16
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
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
#define AVERROR_EOF
End of file.
#define FILTER_PIXFMTS_ARRAY(array)
static enum AVPixelFormat pix_fmts[]
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
static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define AV_PIX_FMT_YUVA422P9
This structure describes decoded (raw) audio or video data.
#define AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUV420P10
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
const char * name
Filter name.
A link between two filters.
#define AV_PIX_FMT_YUVA422P10
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static void apply_contrast_change8(const uint8_t *src, ptrdiff_t src_linesize, uint8_t *dst, ptrdiff_t dst_linesize, int w, int h, float *change, float *orig)
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
const AVFilter ff_vf_tmidequalizer
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
#define AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_GBRP14
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
#define AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_YUVA444P16
static int config_input(AVFilterLink *inlink)
#define AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_GRAY16
float * histogram[4][256]
A filter pad used for either input or output.
#define AV_PIX_FMT_YUV444P10
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
#define AV_PIX_FMT_YUV422P16
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
#define AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP12
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
#define AV_PIX_FMT_YUV444P16
#define AV_CEIL_RSHIFT(a, b)
AVFILTER_DEFINE_CLASS(tmidequalizer)
#define AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P16
static const AVFilterPad tmidequalizer_inputs[]
#define AV_PIX_FMT_GRAY14
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
static void apply_contrast_change16(const uint8_t *ssrc, ptrdiff_t src_linesize, uint8_t *ddst, ptrdiff_t dst_linesize, int w, int h, float *change, float *orig)
#define FILTER_INPUTS(array)
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
static const struct @321 planes[]
#define AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GBRP16
Describe the class of an AVClass context structure.
void(* apply_contrast_change)(const uint8_t *src, ptrdiff_t src_linesize, uint8_t *dst, ptrdiff_t dst_linesize, int w, int h, float *change, float *orig)
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
#define AV_PIX_FMT_YUV422P10
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
static int weight(int i, int blen, int offset)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static void compute_histogram16(const uint8_t *ssrc, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
static int request_frame(AVFilterLink *outlink)
#define AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV444P12
AVFilterContext * src
source filter
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
#define AV_PIX_FMT_YUVA444P10
static void compute_contrast_function(const float *const histograms[256], const float *const kernel, int nb_frames, int radius, int hsize, float *f, int idx)
static const AVOption tmidequalizer_options[]
#define i(width, name, range_min, range_max)
int w
agreed upon image width
#define AV_PIX_FMT_GBRP12
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
const char * name
Pad name.
void(* compute_histogram)(const uint8_t *ssrc, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
void * av_calloc(size_t nmemb, size_t size)
#define AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV422P14
int h
agreed upon image height
#define AV_PIX_FMT_YUVA422P12
static av_cold void uninit(AVFilterContext *ctx)
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
static void free_histograms(AVFilterContext *ctx, int x, int nb_frames)
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
#define FILTER_OUTPUTS(array)
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
#define AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_GRAY12
static const AVFilterPad tmidequalizer_outputs[]
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
#define AV_PIX_FMT_YUV420P14