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84 s->nb_inputs =
s->radius * 2 + 1;
97 #define AMPLIFY_SLICE(type, stype, clip) \
98 const stype limit[2] = { s->llimit, s->hlimit }; \
100 for (int p = 0; p < s->nb_planes; p++) { \
101 const int slice_start = (s->height[p] * jobnr) / nb_jobs; \
102 const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs; \
103 type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
104 ptrdiff_t dst_linesize = out->linesize[p] / sizeof(type); \
106 if (!((1 << p) & s->planes)) { \
107 av_image_copy_plane((uint8_t *)dst, out->linesize[p], \
108 in[radius]->data[p] + slice_start * in[radius]->linesize[p], \
109 in[radius]->linesize[p], \
110 s->linesize[p], slice_end - slice_start); \
114 for (int y = slice_start; y < slice_end; y++) { \
115 for (int x = 0; x < s->linesize[p] / sizeof(type); x++) { \
116 stype src = *(type *)(in[radius]->data[p] + y * in[radius]->linesize[p] + x * sizeof(type));\
117 float diff, abs_diff, avg; \
120 for (int i = 0; i < nb_inputs; i++) { \
121 sum += *(type *)(in[i]->data[p] + y * in[i]->linesize[p] + x * sizeof(type));\
126 abs_diff = fabsf(diff); \
128 if (abs_diff < threshold && abs_diff > tolerance) { \
129 float amp = copysignf(fminf(abs_diff * factor, limit[diff >= 0]), diff); \
130 dst[x] = clip(src + amp, depth); \
136 dst += dst_linesize; \
140 #define CLIP8(x, depth) av_clip_uint8(lrintf(x))
141 #define CLIP16(x, depth) av_clip_uintp2_c(lrintf(x), depth)
142 #define NOP(x, depth) (x)
150 const int radius =
s->radius;
151 const int nb_inputs =
s->nb_inputs;
152 const float threshold =
s->threshold;
153 const float tolerance =
s->tolerance;
154 const float scale = 1.f / nb_inputs;
155 const float factor =
s->factor;
156 const int depth =
s->depth;
160 }
else if (
s->depth <= 16) {
180 s->depth =
s->desc->comp[0].depth;
186 s->height[0] =
s->height[3] =
inlink->h;
197 for (
i = 0;
i <
s->nb_frames;
i++)
211 if (
s->nb_frames <
s->nb_inputs) {
212 s->frames[
s->nb_frames] = in;
217 memmove(&
s->frames[0], &
s->frames[1],
sizeof(*
s->frames) * (
s->nb_inputs - 1));
218 s->frames[
s->nb_inputs - 1] = in;
221 if (!
ctx->is_disabled) {
235 out->pts =
s->frames[0]->pts;
241 #define OFFSET(x) offsetof(AmplifyContext, x)
242 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
243 #define VFT AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
250 {
"low",
"set low limit for amplification",
OFFSET(llimit),
AV_OPT_TYPE_FLOAT, {.dbl=UINT16_MAX}, 0, UINT16_MAX, .flags =
VFT },
251 {
"high",
"set high limit for amplification",
OFFSET(hlimit),
AV_OPT_TYPE_FLOAT, {.dbl=UINT16_MAX}, 0, UINT16_MAX, .flags =
VFT },
278 .priv_class = &lify_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
#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)
static av_cold void uninit(AVFilterContext *ctx)
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
const AVFilter ff_vf_amplify
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define AV_PIX_FMT_YUVA422P9
#define FILTER_INPUTS(array)
This structure describes decoded (raw) audio or video data.
AVFILTER_DEFINE_CLASS(amplify)
#define AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUV420P10
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static enum AVPixelFormat pixel_fmts[]
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
const char * name
Filter name.
A link between two filters.
#define AV_PIX_FMT_YUVA422P10
#define AMPLIFY_SLICE(type, stype, clip)
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
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_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
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.
#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)
#define AV_PIX_FMT_YUVA444P12
#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.
@ 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
int format
agreed upon media format
#define AV_PIX_FMT_YUV422P12
static const AVFilterPad inputs[]
#define AV_PIX_FMT_YUV444P12
AVFilterContext * src
source filter
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 const AVOption amplify_options[]
@ AV_OPT_TYPE_FLOAT
Underlying C type is float.
#define i(width, name, range_min, range_max)
int w
agreed upon image width
const AVPixFmtDescriptor * desc
static const AVFilterPad outputs[]
#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.
static av_cold int init(AVFilterContext *ctx)
@ 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.
static int config_output(AVFilterLink *outlink)
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
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_YUVA422P12
@ AV_OPT_TYPE_INT
Underlying C type is int.
#define AV_PIX_FMT_GBRAPF32
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
static const int factor[16]
@ 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...
@ 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 void scale(int *out, const int *in, const int w, const int h, const int shift)
static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
@ 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
@ 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 const struct @458 planes[]