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73 #define LAGFUN(name, type, round, disabled) \
74 static int lagfun_frame##name(AVFilterContext *ctx, void *arg, \
75 int jobnr, int nb_jobs) \
77 LagfunContext *s = ctx->priv; \
78 const float decay = s->decay; \
79 ThreadData *td = arg; \
80 AVFrame *in = td->in; \
81 AVFrame *out = td->out; \
83 for (int p = 0; p < s->nb_planes; p++) { \
84 const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs; \
85 const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs; \
86 const int width = s->planewidth[p]; \
87 const type *src = (const type *)in->data[p] + \
88 slice_start * in->linesize[p] / sizeof(type); \
89 float *osrc = s->old[p] + slice_start * s->planewidth[p]; \
90 type *dst = (type *)out->data[p] + \
91 slice_start * out->linesize[p] / sizeof(type); \
93 if (!((1 << p) & s->planes)) { \
94 av_image_copy_plane((uint8_t *)dst, out->linesize[p], \
95 (const uint8_t *)src, in->linesize[p], \
96 s->linesize[p], slice_end - slice_start); \
100 for (int y = slice_start; y < slice_end; y++) { \
101 for (int x = 0; x < width; x++) { \
102 const float v = fmaxf(src[x], osrc[x] * decay); \
112 src += in->linesize[p] / sizeof(type); \
114 dst += out->linesize[p] / sizeof(type); \
141 s->depth =
desc->comp[0].depth;
142 s->lagfun[0] =
s->depth <= 8 ? lagfun_frame8 :
s->depth <= 16 ? lagfun_frame16 : lagfun_frame32;
143 s->lagfun[1] =
s->depth <= 8 ? lagfun_framed8 :
s->depth <= 16 ? lagfun_framed16 : lagfun_framed32;
149 s->planewidth[0] =
s->planewidth[3] =
inlink->w;
151 s->planeheight[0] =
s->planeheight[3] =
inlink->h;
153 for (
int p = 0; p <
s->nb_planes; p++) {
154 s->old[p] =
av_calloc(
s->planewidth[p] *
s->planeheight[p],
sizeof(*
s->old[0]));
190 for (
int p = 0; p <
s->nb_planes; p++)
194 #define OFFSET(x) offsetof(LagfunContext, x)
195 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
225 .priv_class = &lagfun_class,
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
AVPixelFormat
Pixel format.
AVFILTER_DEFINE_CLASS(lagfun)
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
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define FILTER_INPUTS(array)
This structure describes decoded (raw) audio or video data.
static int config_output(AVFilterLink *outlink)
#define AV_PIX_FMT_YUV420P10
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
#define LAGFUN(name, type, round, disabled)
const char * name
Filter name.
static enum AVPixelFormat pixel_fmts[]
static const struct @446 planes[]
A link between two filters.
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
#define AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP10
#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 ...
static const AVFilterPad inputs[]
#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...
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.
const AVFilter ff_vf_lagfun
#define AV_PIX_FMT_YUV444P16
#define AV_CEIL_RSHIFT(a, b)
static av_cold void uninit(AVFilterContext *ctx)
#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_OUTPUTS(array)
#define AV_PIX_FMT_GRAYF32
@ 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.
@ 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_YUV440P10
#define AV_PIX_FMT_YUV422P10
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_PIX_FMT_GBRPF32
#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_OPT_TYPE_FLOAT
Underlying C type is float.
int w
agreed upon image width
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
#define AV_PIX_FMT_GBRP12
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
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_YUV420P12
#define AV_PIX_FMT_YUV422P14
static const AVFilterPad outputs[]
int h
agreed upon image height
int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
#define AV_PIX_FMT_GBRAPF32
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
int(* lagfun[2])(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
@ 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...
static const AVOption lagfun_options[]
@ 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)
@ AV_OPT_TYPE_FLAGS
Underlying C type is unsigned int.
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
@ 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
#define AV_PIX_FMT_YUV420P14