40 int jobnr,
int nb_jobs);
43 static inline float lerpf(
float v0,
float v1,
float f)
45 return v0 + (v1 -
v0) * f;
56 const int slice_start = (s->
planeheight[p] * jobnr) / nb_jobs;
58 const int linesize = out->
linesize[p];
59 const int in_linesize = in->
linesize[p];
64 uint8_t *dst = out->
data[p] + slice_start * linesize;
67 if (!((1 << p) & s->
planes)) {
69 w, slice_end - slice_start);
73 for (
int y = slice_start; y <
slice_end; y++) {
74 const int y0 =
FFMAX(y - 1, 0);
75 const int y1 =
FFMIN(y + 1, h1);
76 for (
int x = 0; x <
w; x++) {
77 const int x0 =
FFMAX(x - 1, 0);
78 const int x1 =
FFMIN(x + 1, w1);
79 int a = src[y0 * in_linesize + x0];
80 int b = src[y0 * in_linesize + x];
81 int c = src[y0 * in_linesize + x1];
82 int d = src[y * in_linesize + x0];
83 int e = src[y * in_linesize + x];
84 int f = src[y * in_linesize + x1];
85 int g = src[y1 * in_linesize + x0];
86 int h = src[y1 * in_linesize + x];
87 int i = src[y1 * in_linesize + x1];
101 amp = sqrtf(av_clipf(
FFMIN(mn, 511 - mx) / (
float)mx, 0.f, 1.f));
105 dst[x] = av_clip_uint8(((b + d + f + h) * weight + e) / (1.f + 4.f * weight));
118 const int max = 2 * (1 << s->
depth) - 1;
123 const int slice_start = (s->
planeheight[p] * jobnr) / nb_jobs;
125 const int linesize = out->
linesize[p] / 2;
126 const int in_linesize = in->
linesize[p] / 2;
128 const int w1 = w - 1;
130 const int h1 = h - 1;
131 uint16_t *dst = (uint16_t *)out->
data[p] + slice_start * linesize;
132 const uint16_t *
src = (
const uint16_t *)in->
data[p];
134 if (!((1 << p) & s->
planes)) {
136 in_linesize, w * 2, slice_end - slice_start);
140 for (
int y = slice_start; y <
slice_end; y++) {
141 const int y0 =
FFMAX(y - 1, 0);
142 const int y1 =
FFMIN(y + 1, h1);
143 for (
int x = 0; x <
w; x++) {
144 const int x0 =
FFMAX(x - 1, 0);
145 const int x1 =
FFMIN(x + 1, w1);
146 int a =
src[y0 * in_linesize + x0];
147 int b =
src[y0 * in_linesize + x];
148 int c =
src[y0 * in_linesize + x1];
149 int d =
src[y * in_linesize + x0];
150 int e =
src[y * in_linesize + x];
151 int f =
src[y * in_linesize + x1];
152 int g =
src[y1 * in_linesize + x0];
153 int h =
src[y1 * in_linesize + x];
154 int i =
src[y1 * in_linesize + x1];
155 int mn, mn2, mx, mx2;
168 amp = sqrtf(av_clipf(
FFMIN(mn, max - mx) / (
float)mx, 0.f, 1.f));
278 #define OFFSET(x) offsetof(CASContext, x) 279 #define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM 293 .priv_class = &cas_class,
AVFILTER_DEFINE_CLASS(cas)
#define AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUVA422P9
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
#define AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_GBRAP10
static const AVFilterPad cas_inputs[]
#define AV_PIX_FMT_YUVA422P10
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Main libavfilter public API header.
int h
agreed upon image height
#define AV_PIX_FMT_GBRP10
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
#define AV_PIX_FMT_YUV420P12
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
#define AV_PIX_FMT_GRAY10
static av_cold int config_input(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...
const char * name
Pad name.
#define AV_PIX_FMT_GRAY12
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
#define AV_PIX_FMT_YUVA420P9
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
#define AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUVA420P16
A filter pad used for either input or output.
A link between two filters.
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
static float lerpf(float v0, float v1, float f)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
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...
void * priv
private data for use by the filter
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
#define AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_GBRAP16
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int w
agreed upon image width
#define AV_PIX_FMT_YUV422P9
uint8_t nb_components
The number of components each pixel has, (1-4)
#define AV_PIX_FMT_GBRP16
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
#define AV_PIX_FMT_GRAY16
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
#define AV_PIX_FMT_YUVA444P12
static int cas_slice16(AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs)
#define AV_PIX_FMT_YUVA444P10
static const AVOption cas_options[]
#define AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_GBRP14
static const AVFilterPad outputs[]
int format
agreed upon media format
static av_cold int query_formats(AVFilterContext *avctx)
#define AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P14
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
#define AV_PIX_FMT_GRAY14
static int cas_slice8(AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs)
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
#define AV_PIX_FMT_YUV420P10
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Describe the class of an AVClass context structure.
static const AVFilterPad cas_outputs[]
const char * name
Filter name.
#define AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV420P9
AVFilterLink ** outputs
array of pointers to output links
static int weight(int i, int blen, int offset)
#define AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_GBRP12
#define flags(name, subs,...)
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
#define AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV444P12
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
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
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
planar GBRA 4:4:4:4 32bpp
#define AV_PIX_FMT_YUVA444P9
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
avfilter_execute_func * execute
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
AVFilterContext * dst
dest filter
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
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.
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 depth
Number of bits in the component.
AVPixelFormat
Pixel format.
int(* do_slice)(AVFilterContext *s, void *arg, int jobnr, int nb_jobs)
#define AV_PIX_FMT_YUV422P16
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
#define AV_PIX_FMT_YUVA422P12
#define AV_CEIL_RSHIFT(a, b)
static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)
Clip a signed integer to an unsigned power of two range.