Go to the documentation of this file.
50 #define OFFSET(x) offsetof(MaskFunContext, x)
51 #define VFT AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
92 if (
s->getsum(
ctx, in)) {
123 #define GETSUM(name, type, div) \
124 static int getsum##name(AVFilterContext *ctx, AVFrame *out) \
126 MaskFunContext *s = ctx->priv; \
130 for (p = 0; p < s->nb_planes; p++) { \
131 const int linesize = out->linesize[p] / div; \
132 const int w = s->planewidth[p]; \
133 const int h = s->planeheight[p]; \
134 type *dst = (type *)out->data[p]; \
136 if (!((1 << p) & s->planes)) \
139 for (int y = 0; y < h; y++) { \
140 for (int x = 0; x < w; x++) \
142 if (sum >= s->max_sum) \
154 #define MASKFUN(name, type, div) \
155 static int maskfun##name(AVFilterContext *ctx, void *arg, \
156 int jobnr, int nb_jobs) \
158 MaskFunContext *s = ctx->priv; \
159 AVFrame *in = s->in; \
160 AVFrame *out = arg; \
161 const int low = s->low; \
162 const int high = s->high; \
163 const int max = s->max; \
166 for (p = 0; p < s->nb_planes; p++) { \
167 const int src_linesize = in->linesize[p] / div; \
168 const int linesize = out->linesize[p] / div; \
169 const int w = s->planewidth[p]; \
170 const int h = s->planeheight[p]; \
171 const int slice_start = (h * jobnr) / nb_jobs; \
172 const int slice_end = (h * (jobnr+1)) / nb_jobs; \
173 const type *src = (type *)in->data[p] + \
174 slice_start * src_linesize; \
175 type *dst = (type *)out->data[p] + \
176 slice_start * linesize; \
178 if (!((1 << p) & s->planes)) \
181 for (int y = slice_start; y < slice_end; y++) { \
182 for (int x = 0; x < w; x++) { \
186 else if (dst[x] > high) \
190 src += src_linesize; \
207 for (
int p = 0; p <
s->nb_planes; p++) {
208 uint8_t *dst =
s->empty->data[p];
210 for (
int y = 0; y <
s->planeheight[p]; y++) {
211 memset(dst,
s->fill,
s->planewidth[p]);
212 dst +=
s->empty->linesize[p];
216 for (
int p = 0; p <
s->nb_planes; p++) {
217 uint16_t *dst = (uint16_t *)
s->empty->data[p];
219 for (
int y = 0; y <
s->planeheight[p]; y++) {
220 for (
int x = 0; x <
s->planewidth[p]; x++)
222 dst +=
s->empty->linesize[p] / 2;
233 for (
int p = 0; p <
s->nb_planes; p++) {
234 if (!((1 << p) &
s->planes))
236 s->max_sum += (uint64_t)
s->sum *
s->planewidth[p] *
s->planeheight[p];
253 vsub =
desc->log2_chroma_h;
255 s->planeheight[0] =
s->planeheight[3] =
inlink->h;
257 s->planewidth[0] =
s->planewidth[3] =
inlink->w;
259 s->depth =
desc->comp[0].depth;
260 s->max = (1 <<
s->depth) - 1;
263 s->maskfun = maskfun8;
266 s->maskfun = maskfun16;
267 s->getsum = getsum16;
282 char *res,
int res_len,
int flags)
327 .priv_class = &maskfun_class,
static void fill_frame(AVFilterContext *ctx)
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
#define FILTER_PIXFMTS_ARRAY(array)
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)
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 process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define AV_PIX_FMT_YUVA422P9
#define FILTER_INPUTS(array)
This structure describes decoded (raw) audio or video data.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
#define AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P10
#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.
A link between two filters.
#define AV_PIX_FMT_YUVA422P10
static av_cold void uninit(AVFilterContext *ctx)
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
#define AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_GRAY16
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
const AVFilterPad ff_video_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_VIDEO.
@ 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
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
static int config_input(AVFilterLink *inlink)
#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)
#define AV_PIX_FMT_YUV420P9
const AVFilter ff_vf_maskfun
#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.
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
static const AVFilterPad maskfun_inputs[]
#define FILTER_OUTPUTS(array)
#define MASKFUN(name, type, div)
@ 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
AVFILTER_DEFINE_CLASS(maskfun)
#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.
@ 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 void set_max_sum(AVFilterContext *ctx)
#define AVFILTERPAD_FLAG_NEEDS_WRITABLE
The filter expects writable frames from its input link, duplicating data buffers if needed.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV444P12
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
static enum AVPixelFormat pix_fmts[]
#define AV_PIX_FMT_YUVA444P10
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
int(* maskfun)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
int w
agreed upon image width
#define AV_PIX_FMT_GBRP12
static const AVOption maskfun_options[]
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
@ 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.
#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
int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
int(* getsum)(AVFilterContext *ctx, AVFrame *out)
@ AV_OPT_TYPE_INT
Underlying C type is int.
@ 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
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
#define flags(name, subs,...)
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
#define AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_GRAY12
static const struct @450 planes[]
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
#define AV_PIX_FMT_YUV420P14
#define GETSUM(name, type, div)