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31 #define OFFSET(x) offsetof(HysteresisContext, x)
32 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
50 ptrdiff_t blinesize, ptrdiff_t olinesize,
51 ptrdiff_t destlinesize,
94 if (
ctx->is_disabled) {
106 for (p = 0; p <
s->nb_planes; p++) {
107 if (!((1 << p) &
s->planes)) {
109 s->width[p],
s->height[p]);
114 for (y = 0; y <
s->height[p]; y++) {
115 memset(
out->data[p] + y *
out->linesize[p], 0,
s->width[p]);
120 memset(
s->map, 0,
s->width[0] *
s->height[0]);
121 memset(
s->xy, 0,
s->width[0] *
s->height[0] * 4);
127 s->width[p],
s->height[p]);
137 return s->map[x + y *
w];
142 s->map[x + y *
w] = 0xff;
143 s->xy[++
s->index] = (uint16_t)(x) << 16 | (uint16_t)y;
148 uint32_t
val =
s->xy[
s->index--];
151 *y =
val & 0x0000FFFF;
161 ptrdiff_t blinesize, ptrdiff_t alinesize,
165 const int t =
s->threshold;
168 for (y = 0; y <
h; y++) {
169 for (x = 0; x <
w; x++) {
170 if ((bsrc[x + y * blinesize] > t) && (asrc[x + y * alinesize] > t) && !
passed(
s, x, y,
w)) {
173 dst[x + y * dlinesize] = asrc[x + y * alinesize];
178 int x_min, x_max, y_min, y_max, yy, xx;
180 pop(
s, &posx, &posy);
182 x_min = posx > 0 ? posx - 1 : 0;
183 x_max = posx <
w - 1 ? posx + 1 : posx;
184 y_min = posy > 0 ? posy - 1 : 0;
185 y_max = posy <
h - 1 ? posy + 1 : posy;
187 for (yy = y_min; yy <= y_max; yy++) {
188 for (xx = x_min; xx <= x_max; xx++) {
189 if ((asrc[xx + yy * alinesize] > t) && !
passed(
s, xx, yy,
w)) {
190 dst[xx + yy * dlinesize] = asrc[xx + yy * alinesize];
203 ptrdiff_t blinesize, ptrdiff_t alinesize,
207 const uint16_t *bsrc = (
const uint16_t *)bbsrc;
208 const uint16_t *asrc = (
const uint16_t *)aasrc;
209 uint16_t *
dst = (uint16_t *)ddst;
210 const int t =
s->threshold;
217 for (y = 0; y <
h; y++) {
218 for (x = 0; x <
w; x++) {
219 if ((bsrc[x + y * blinesize] > t) && (asrc[x + y * alinesize] > t) && !
passed(
s, x, y,
w)) {
222 dst[x + y * dlinesize] = asrc[x + y * alinesize];
227 int x_min, x_max, y_min, y_max, yy, xx;
229 pop(
s, &posx, &posy);
231 x_min = posx > 0 ? posx - 1 : 0;
232 x_max = posx <
w - 1 ? posx + 1 : posx;
233 y_min = posy > 0 ? posy - 1 : 0;
234 y_max = posy <
h - 1 ? posy + 1 : posy;
236 for (yy = y_min; yy <= y_max; yy++) {
237 for (xx = x_min; xx <= x_max; xx++) {
238 if ((asrc[xx + yy * alinesize] > t) && !
passed(
s, xx, yy,
w)) {
239 dst[xx + yy * dlinesize] = asrc[xx + yy * alinesize];
260 vsub =
desc->log2_chroma_h;
262 s->height[0] =
s->height[3] =
inlink->h;
264 s->width[0] =
s->width[3] =
inlink->w;
266 s->depth =
desc->comp[0].depth;
268 if (
desc->comp[0].depth == 8)
297 "(size %dx%d) do not match the corresponding "
298 "second input link %s parameters (size %dx%d)\n",
300 ctx->input_pads[1].name,
305 outlink->
w =
base->w;
306 outlink->
h =
base->h;
369 .
name =
"hysteresis",
370 .description =
NULL_IF_CONFIG_SMALL(
"Grow first stream into second stream by connecting components."),
371 .preinit = hysteresis_framesync_preinit,
378 .priv_class = &hysteresis_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.
AVPixelFormat
Pixel format.
static int config_output(AVFilterLink *outlink)
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.
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
#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 struct @467 planes[]
#define AV_PIX_FMT_YUV420P10
static int is_empty(HysteresisContext *s)
@ 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
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.
static enum AVPixelFormat pix_fmts[]
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
static const AVFilterPad hysteresis_inputs[]
static double val(void *priv, double ch)
#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 ...
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define AV_PIX_FMT_YUV422P16
static int activate(AVFilterContext *ctx)
@ 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 AV_PIX_FMT_YUV444P16
#define AV_CEIL_RSHIFT(a, b)
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
#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,...)
static void push(HysteresisContext *s, int x, int y, int w)
@ 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 int process_frame(FFFrameSync *fs)
void(* hysteresis)(struct HysteresisContext *s, const uint8_t *bsrc, const uint8_t *osrc, uint8_t *dst, ptrdiff_t blinesize, ptrdiff_t olinesize, ptrdiff_t destlinesize, int w, int h)
#define AV_PIX_FMT_YUV422P10
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
static const AVOption hysteresis_options[]
static FilterLink * ff_filter_link(AVFilterLink *link)
#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
FRAMESYNC_DEFINE_CLASS(hysteresis, HysteresisContext, fs)
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.
#define AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV422P14
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
int h
agreed upon image height
@ AV_OPT_TYPE_INT
Underlying C type is int.
static void hysteresis16(HysteresisContext *s, const uint8_t *bbsrc, const uint8_t *aasrc, uint8_t *ddst, ptrdiff_t blinesize, ptrdiff_t alinesize, ptrdiff_t dlinesize, int w, int h)
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 const AVFilterPad hysteresis_outputs[]
@ 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...
static av_cold void uninit(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
@ 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.
const AVFilter ff_vf_hysteresis
#define AV_PIX_FMT_YUV440P12
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
static int passed(HysteresisContext *s, int x, int y, int w)
static void hysteresis8(HysteresisContext *s, const uint8_t *bsrc, const uint8_t *asrc, uint8_t *dst, ptrdiff_t blinesize, ptrdiff_t alinesize, ptrdiff_t dlinesize, int w, int h)
@ 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 void pop(HysteresisContext *s, int *x, int *y)