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45 #define COLOR_DIFF_COEFF_SIZE 512
67 #define RADIUS_MIN 0.1
68 #define RADIUS_MAX 4.0
70 #define PRE_FILTER_RADIUS_MIN 0.1
71 #define PRE_FILTER_RADIUS_MAX 2.0
73 #define STRENGTH_MIN 0.1
74 #define STRENGTH_MAX 100.0
76 #define OFFSET(x) offsetof(SabContext, x)
77 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
107 s->chroma.radius =
s->luma.radius;
109 s->chroma.pre_filter_radius =
s->luma.pre_filter_radius;
111 s->chroma.strength =
s->luma.strength;
113 s->luma.quality =
s->chroma.quality = 3.0;
117 "luma_radius:%f luma_pre_filter_radius::%f luma_strength:%f "
118 "chroma_radius:%f chroma_pre_filter_radius:%f chroma_strength:%f\n",
119 s->luma .radius,
s->luma .pre_filter_radius,
s->luma .strength,
120 s->chroma.radius,
s->chroma.pre_filter_radius,
s->chroma.strength);
126 if (
f->pre_filter_context) {
128 f->pre_filter_context =
NULL;
150 if (!
f->pre_filter_buf)
153 f->pre_filter_linesize = linesize;
167 if (index < 0 || index >= vec->
length)
d = 0.0;
178 if (!
f->dist_coeff) {
183 for (y = 0; y < vec->
length; y++) {
184 for (x = 0; x < vec->
length; x++) {
186 f->dist_coeff[x + y*
f->dist_linesize] = (
int)(
d*(1<<10) + 0.5);
200 s->hsub =
desc->log2_chroma_w;
201 s->vsub =
desc->log2_chroma_h;
217 static void blur(uint8_t *dst,
const int dst_linesize,
218 const uint8_t *
src,
const int src_linesize,
223 const int radius =
f.dist_width/2;
226 int src2_linesize[
NB_PLANES] = { src_linesize };
227 uint8_t *dst2[
NB_PLANES] = {
f.pre_filter_buf };
228 int dst2_linesize[
NB_PLANES] = {
f.pre_filter_linesize };
230 sws_scale(
f.pre_filter_context,
src2, src2_linesize, 0,
h, dst2, dst2_linesize);
232 #define UPDATE_FACTOR do { \
234 factor = f.color_diff_coeff[COLOR_DIFF_COEFF_SIZE/2 + pre_val - \
235 f.pre_filter_buf[ix + iy*f.pre_filter_linesize]] * f.dist_coeff[dx + dy*f.dist_linesize]; \
236 sum += src[ix + iy*src_linesize] * factor; \
240 for (y = 0; y <
h; y++) {
241 for (x = 0; x <
w; x++) {
245 const int pre_val =
f.pre_filter_buf[x + y*
f.pre_filter_linesize];
246 if (x >= radius && x <
w - radius) {
247 for (dy = 0; dy < radius*2 + 1; dy++) {
249 int iy = y+dy - radius;
252 for (dx = 0; dx < radius*2 + 1; dx++) {
253 const int ix = x+dx - radius;
258 for (dy = 0; dy < radius*2+1; dy++) {
260 int iy = y+dy - radius;
263 for (dx = 0; dx < radius*2 + 1; dx++) {
264 int ix = x+dx - radius;
270 dst[x + y*dst_linesize] = (sum + div/2) / div;
290 if (
inpic->data[2]) {
319 .priv_class = &sab_class,
#define PRE_FILTER_RADIUS_MAX
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
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
static enum AVPixelFormat pix_fmts[]
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 FILTER_PIXFMTS_ARRAY(array)
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
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
This structure describes decoded (raw) audio or video data.
AVFILTER_DEFINE_CLASS(sab)
static void blur(uint8_t *dst, const int dst_linesize, const uint8_t *src, const int src_linesize, const int w, const int h, FilterParam *fp)
#define AV_LOG_VERBOSE
Detailed information.
static const AVOption sab_options[]
int attribute_align_arg sws_scale(struct SwsContext *c, const uint8_t *const srcSlice[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t *const dst[], const int dstStride[])
swscale wrapper, so we don't need to export the SwsContext.
const char * name
Filter name.
A link between two filters.
#define PRE_FILTER_RADIUS_MIN
void sws_freeVec(SwsVector *a)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
A filter pad used for either input or output.
const AVFilterPad ff_video_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_VIDEO.
#define COLOR_DIFF_COEFF_SIZE
#define AV_CEIL_RSHIFT(a, b)
int length
number of coefficients in the vector
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
SwsVector * sws_getGaussianVec(double variance, double quality)
Return a normalized Gaussian curve used to filter stuff quality = 3 is high quality,...
#define FILTER_INPUTS(array)
Describe the class of an AVClass context structure.
static const AVFilterPad sab_inputs[]
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
static void close_filter_param(FilterParam *f)
static av_always_inline av_const int avpriv_mirror(int x, int w)
double * coeff
pointer to the list of coefficients
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
struct SwsContext * sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
Allocate and return an SwsContext.
int color_diff_coeff[COLOR_DIFF_COEFF_SIZE]
static int config_props(AVFilterLink *inlink)
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
#define i(width, name, range_min, range_max)
int w
agreed upon image width
#define av_malloc_array(a, b)
const char * name
Pad name.
struct SwsContext * pre_filter_context
static int open_filter_param(FilterParam *f, int width, int height, unsigned int sws_flags)
void sws_freeContext(struct SwsContext *swsContext)
Free the swscaler context swsContext.
int h
agreed upon image height
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
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)
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)
static av_cold int init(AVFilterContext *ctx)
static av_cold void uninit(AVFilterContext *ctx)