Go to the documentation of this file.
45 uint16_t
lut[256 * 256 * 256];
51 #define OFFSET(x) offsetof(AverageBlurContext, x)
52 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
71 #define LUT_DIV(sum, area) (lut[(sum)])
72 #define SLOW_DIV(sum, area) ((sum) / (area))
74 #define FILTER(name, type, btype, lutunused, areaunused, lutdiv) \
75 static int filter_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
77 AverageBlurContext *s = ctx->priv; \
78 ThreadData *td = arg; \
79 areaunused const int area = s->area; \
80 lutunused const uint16_t *lut = s->lut; \
81 const int size_w = s->radius; \
82 const int size_h = s->radiusV; \
83 btype *col_sum = (btype *)s->buffer + size_w; \
84 const int dlinesize = td->dlinesize / sizeof(type); \
85 const int linesize = td->linesize / sizeof(type); \
86 const int height = td->height; \
87 const int width = td->width; \
88 const type *src = td->ptr; \
89 type *dst = td->dptr; \
92 for (int x = -size_w; x < 0; x++) { \
93 sum = src[0] * size_h; \
94 for (int y = 0; y <= size_h; y++) \
95 sum += src[y * linesize]; \
96 av_assert2(sum >= 0); \
100 for (int x = 0; x < width; x++) { \
101 sum = src[x] * size_h; \
102 for (int y = 0; y <= size_h; y++) \
103 sum += src[x + y * linesize]; \
104 av_assert2(sum >= 0); \
108 for (int x = width; x < width + size_w; x++) { \
109 sum = src[width - 1] * size_h; \
110 for (int y = 0; y <= size_h; y++) \
111 sum += src[width - 1 + y * linesize]; \
112 av_assert2(sum >= 0); \
117 for (int x = -size_w; x <= size_w; x++) \
119 av_assert2(sum >= 0); \
120 dst[0] = lutdiv(sum, area); \
122 for (int x = 1; x < width; x++) { \
123 sum = sum - col_sum[x - size_w - 1] + col_sum[x + size_w]; \
124 av_assert2(sum >= 0); \
125 dst[x] = lutdiv(sum, area); \
132 for (int y = 1; y < height; y++) { \
133 const int syp = FFMIN(size_h, height - y - 1) * linesize; \
134 const int syn = FFMIN(y, size_h + 1) * linesize; \
138 for (int x = -size_w; x < 0; x++) \
139 col_sum[x] += src[0 + syp] - src[0 - syn]; \
141 for (int x = 0; x < width; x++) \
142 col_sum[x] += src[x + syp] - src[x - syn]; \
144 for (int x = width; x < width + size_w; x++) \
145 col_sum[x] += src[width - 1 + syp] - src[width - 1 - syn]; \
147 for (int x = -size_w; x <= size_w; x++) \
149 av_assert2(sum >= 0); \
150 dst[0] = lutdiv(sum, area); \
152 for (int x = 1; x < width; x++) { \
153 sum = sum - col_sum[x - size_w - 1] + col_sum[x + size_w]; \
154 av_assert2(sum >= 0); \
155 dst[x] = lutdiv(sum, area); \
174 const int area = (2 *
s->radiusV + 1) * (2 *
s->radius + 1);
180 for (
int i = 0, j = 0, k = 0;
i <
max * area;
i++, j++) {
196 s->depth =
desc->comp[0].depth;
197 s->max = 1 <<
s->depth;
199 s->planewidth[0] =
s->planewidth[3] =
inlink->w;
201 s->planeheight[0] =
s->planeheight[3] =
inlink->h;
210 s->radiusV =
s->radius;
212 s->filter[0] =
s->depth <= 8 ? filter_lut8 : filter_lut16;
213 s->filter[1] =
s->depth <= 8 ? filter_slow8 : filter_slow16;
215 s->radius =
FFMIN(
s->planewidth[1] / 2,
s->radius);
216 s->radiusV =
FFMIN(
s->planeheight[1] / 2,
s->radiusV);
226 const int width =
s->planewidth[plane];
227 const int height =
s->planeheight[plane];
235 td.dptr =
out->data[plane];
236 td.dlinesize =
out->linesize[plane];
237 s->filter[slow](
ctx, &
td, 0, 0);
277 for (plane = 0; plane <
s->nb_planes; plane++) {
278 const int height =
s->planeheight[plane];
279 const int width =
s->planewidth[plane];
281 if (!(
s->planes & (1 << plane))) {
297 char *res,
int res_len,
int flags)
300 const int area =
s->area;
308 s->radiusV =
s->radius;
310 s->radius =
FFMIN(
s->planewidth[1] / 2,
s->radius);
311 s->radiusV =
FFMIN(
s->planeheight[1] / 2,
s->radiusV);
313 if (area != (2 *
s->radiusV + 1) * (2 *
s->radius + 1))
346 .priv_class = &avgblur_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 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.
#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
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
const char * name
Filter name.
static av_cold void uninit(AVFilterContext *ctx)
A link between two filters.
#define AV_PIX_FMT_YUVA422P10
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.
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
const AVFilter ff_vf_avgblur
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 FF_ARRAY_ELEMS(a)
#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 LUT_DIV(sum, area)
#define AV_PIX_FMT_YUV444P16
#define AV_CEIL_RSHIFT(a, b)
#define AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_GRAY14
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
#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.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
static const AVFilterPad avgblur_inputs[]
#define SLOW_DIV(sum, area)
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
uint16_t lut[256 *256 *256]
#define AV_PIX_FMT_YUV422P10
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
static const AVOption avgblur_options[]
static const AVFilterPad avgblur_outputs[]
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define FILTER(name, type, btype, lutunused, areaunused, lutdiv)
#define AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV444P12
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)
#define AV_PIX_FMT_YUVA444P10
static enum AVPixelFormat pix_fmts[]
#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 build_lut(AVFilterContext *ctx, int max)
#define i(width, name, range_min, range_max)
int w
agreed upon image width
#define AV_PIX_FMT_GBRP12
Used for passing data between threads.
@ 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
#define AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV422P14
static void averageiir2d(AVFilterContext *ctx, AVFrame *in, AVFrame *out, int plane)
int h
agreed upon image height
#define AV_PIX_FMT_YUVA422P12
int(* filter[2])(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
@ 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)
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 flags(name, subs,...)
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_YUV440P12
#define AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_GRAY12
AVFILTER_DEFINE_CLASS(avgblur)
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
static int config_input(AVFilterLink *inlink)
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
#define AV_PIX_FMT_YUV420P14