51 #define OFFSET(x) offsetof(ELBGContext, x)
52 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
57 {
"nb_steps",
"set max number of steps used to compute the mapping",
OFFSET(max_steps_nb),
AV_OPT_TYPE_INT, { .i64 = 1 }, 1, INT_MAX,
FLAGS },
58 {
"n",
"set max number of steps used to compute the mapping",
OFFSET(max_steps_nb),
AV_OPT_TYPE_INT, { .i64 = 1 }, 1, INT_MAX,
FLAGS },
110 #define NB_COMPONENTS 3
157 for (
i = 0;
i < inlink->
h;
i++) {
159 for (j = 0; j < inlink->
w; j++) {
187 pal = (uint32_t *)
out->data[1];
191 pal[
i] = 0xFFU << 24 |
198 for (
i = 0;
i < inlink->
h;
i++) {
200 for (j = 0; j < inlink->
w; j++, p++) {
203 p0 +=
out->linesize[0];
213 for (
i = 0;
i < inlink->
h;
i++) {
215 for (j = 0; j < inlink->
w; j++) {
218 p[g_idx] = elbg->
codebook[cb_idx+1];
219 p[b_idx] = elbg->
codebook[cb_idx+2];
260 .priv_class = &elbg_class,
static const AVFilterPad inputs[]
static const AVFilterPad outputs[]
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Main libavfilter public API header.
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
int avpriv_init_elbg(int *points, int dim, int numpoints, int *codebook, int numCB, int max_steps, int *closest_cb, AVLFG *rand_state)
Initialize the **codebook vector for the elbg algorithm.
int avpriv_do_elbg(int *points, int dim, int numpoints, int *codebook, int numCB, int max_steps, int *closest_cb, AVLFG *rand_state)
Implementation of the Enhanced LBG Algorithm Based on the paper "Neural Networks 14:1219-1237" that c...
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static enum AVPixelFormat pix_fmts[]
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
AVPixelFormat
Pixel format.
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Describe the class of an AVClass context structure.
void * priv
private data for use by the filter
AVFilterLink ** outputs
array of pointers to output links
A link between two filters.
int w
agreed upon image width
int h
agreed upon image height
AVFilterContext * dst
dest filter
int format
agreed upon media format
A filter pad used for either input or output.
const char * name
Pad name.
const char * name
Filter name.
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).
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Context structure for the Lagged Fibonacci PRNG.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
uint8_t nb_components
The number of components each pixel has, (1-4)
const AVPixFmtDescriptor * pix_desc
int * codeword_closest_codebook_idxs
#define av_realloc_f(p, o, n)
static const AVFilterPad elbg_outputs[]
static int query_formats(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
static const AVOption elbg_options[]
static av_cold int init(AVFilterContext *ctx)
static av_cold void uninit(AVFilterContext *ctx)
AVFILTER_DEFINE_CLASS(elbg)
static const AVFilterPad elbg_inputs[]
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.