Go to the documentation of this file.
42 ptrdiff_t linesize1, ptrdiff_t linesize2,
46 float *histogram1,
float *histogram2,
47 unsigned *
cchange,
size_t hsize);
50 #define OFFSET(x) offsetof(MidEqualizerContext, x)
51 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
96 if (
ctx->is_disabled) {
108 for (p = 0; p <
s->nb_planes; p++) {
109 if (!((1 << p) &
s->planes)) {
111 s->width[0][p] * (1 + (
s->histogram_size > 256)),
s->height[0][p]);
115 s->midequalizer(in0->
data[p], in1->
data[p],
119 s->width[0][p],
s->height[0][p],
120 s->width[1][p],
s->height[1][p],
121 s->histogram[0],
s->histogram[1],
122 s->cchange,
s->histogram_size);
131 int w,
int h,
float *histogram,
size_t hsize)
135 memset(histogram, 0, hsize *
sizeof(*histogram));
137 for (y = 0; y <
h; y++) {
138 for (x = 0; x <
w; x++) {
139 histogram[
src[x]] += 1;
144 for (x = 0; x < hsize - 1; x++) {
145 histogram[x + 1] += histogram[x];
146 histogram[x] /= hsize;
148 histogram[x] /= hsize;
152 int w,
int h,
float *histogram,
size_t hsize)
156 memset(histogram, 0, hsize *
sizeof(*histogram));
158 for (y = 0; y <
h; y++) {
159 for (x = 0; x <
w; x++) {
160 histogram[
src[x]] += 1;
165 for (x = 0; x < hsize - 1; x++) {
166 histogram[x + 1] += histogram[x];
167 histogram[x] /= hsize;
169 histogram[x] /= hsize;
173 unsigned *cchange,
size_t hsize)
177 for (
i = 0;
i < hsize;
i++) {
180 for (j = 0; j < hsize && histogram2[j] < histogram1[
i]; j++);
182 cchange[
i] = (
i + j) / 2;
188 ptrdiff_t linesize1, ptrdiff_t linesize2,
192 float *histogram1,
float *histogram2,
203 for (y = 0; y <
h0; y++) {
204 for (x = 0; x < w0; x++) {
214 ptrdiff_t linesize1, ptrdiff_t linesize2,
218 float *histogram1,
float *histogram2,
222 const uint16_t *
i = (
const uint16_t *)in0;
223 uint16_t *d = (uint16_t *)
dst;
231 for (y = 0; y <
h0; y++) {
232 for (x = 0; x < w0; x++) {
233 d[x] = cchange[
i[x]];
250 vsub =
desc->log2_chroma_h;
252 s->height[0][0] =
s->height[0][3] =
inlink->h;
253 s->width[0][0] =
s->width[0][3] =
inlink->w;
257 s->histogram_size = 1 <<
desc->comp[0].depth;
259 s->histogram[0] =
av_calloc(
s->histogram_size,
sizeof(
float));
260 s->histogram[1] =
av_calloc(
s->histogram_size,
sizeof(
float));
261 s->cchange =
av_calloc(
s->histogram_size,
sizeof(
unsigned));
262 if (!
s->histogram[0] || !
s->histogram[1] || !
s->cchange)
265 if (
s->histogram_size == 256) {
284 vsub =
desc->log2_chroma_h;
286 s->height[1][0] =
s->height[1][3] =
inlink->h;
287 s->width[1][0] =
s->width[1][3] =
inlink->w;
369 .
name =
"midequalizer",
377 .priv_class = &midequalizer_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
AVRational time_base
Time base for the incoming frames.
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
static const float h0[64]
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
#define FILTER_PIXFMTS_ARRAY(array)
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
const AVFilter ff_vf_midequalizer
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)
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
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 int config_input1(AVFilterLink *inlink)
#define AV_PIX_FMT_YUVA422P9
#define FILTER_INPUTS(array)
This structure describes decoded (raw) audio or video data.
#define AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P10
static const AVFilterPad midequalizer_inputs[]
#define AV_PIX_FMT_YUV420P10
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
const char * name
Filter name.
@ EXT_INFINITY
Extend the frame to infinity.
A link between two filters.
#define AV_PIX_FMT_YUVA422P10
static int activate(AVFilterContext *ctx)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
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.
Link properties exposed to filter code, but not external callers.
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
#define AV_PIX_FMT_YUVA420P9
@ EXT_STOP
Completely stop all streams with this one.
#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
#define AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_GRAY16
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events.
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 ...
static void midequalizer8(const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
#define AV_PIX_FMT_YUV422P16
static int config_output(AVFilterLink *outlink)
@ 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
static void midequalizer16(const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
#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)
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
AVFILTER_DEFINE_CLASS(midequalizer)
#define AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_GRAY14
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
#define FILTER_OUTPUTS(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...
#define AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GBRP16
Describe the class of an AVClass context structure.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
#define fs(width, name, subs,...)
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
static const AVFilterPad midequalizer_outputs[]
static int config_input0(AVFilterLink *inlink)
#define AV_PIX_FMT_YUV422P10
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
static FilterLink * ff_filter_link(AVFilterLink *link)
void(* midequalizer)(const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
#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_change(float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
#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
const char * name
Pad name.
void * av_calloc(size_t nmemb, size_t size)
#define AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUVA444P9
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
static int process_frame(FFFrameSync *fs)
#define AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV422P14
static enum AVPixelFormat pix_fmts[]
static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
int h
agreed upon image height
#define AV_PIX_FMT_YUVA422P12
@ AV_OPT_TYPE_INT
Underlying C type is int.
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link.
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
static av_cold void uninit(AVFilterContext *ctx)
@ 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 const AVOption midequalizer_options[]
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
static void compute_histogram16(const uint16_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
@ 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)
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown or variable.
#define AV_PIX_FMT_YUV444P14
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
#define AV_PIX_FMT_GRAY12
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
#define AV_PIX_FMT_YUV420P14
static const struct @458 planes[]