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80 const int nb_blocks =
s->nb_blocks;
85 for (
int x = 0; x <
s->planewidth[0];) {
88 if (used[rand] == 0) {
93 map[rand *
s->block_w] = x;
95 width =
FFMIN(
s->block_w,
s->planewidth[0] - rand *
s->block_w);
96 map[x] = rand *
s->block_w;
102 map[rand *
s->block_w +
i] =
map[rand *
s->block_w] +
i;
118 const int nb_blocks =
s->nb_blocks;
123 for (
int y = 0; y <
s->planeheight[0];) {
126 if (used[rand] == 0) {
131 map[rand *
s->block_h] = y;
133 height =
FFMIN(
s->block_h,
s->planeheight[0] - rand *
s->block_h);
134 map[y] = rand *
s->block_h;
140 map[rand *
s->block_h +
i] =
map[rand *
s->block_h] +
i;
156 const int nb_blocks =
s->nb_blocks;
157 int nb_blocks_w =
s->planewidth[0] /
s->block_w;
162 for (
int i = 0;
i < nb_blocks;) {
165 if (used[rand] == 0) {
166 int yin =
i / nb_blocks_w;
167 int xin =
i % nb_blocks_w;
168 int in = yin *
s->block_h *
s->planewidth[0] + xin *
s->block_w;
169 int yout = rand / nb_blocks_w;
170 int xout = rand % nb_blocks_w;
171 int out = yout *
s->block_h *
s->planewidth[0] + xout *
s->block_w;
181 for (
int y = 0; y <
s->block_h; y++) {
182 for (
int x = 0; x <
s->block_w; x++) {
183 map[
out + y *
s->planewidth[0] + x] =
map[
out] + x + y *
s->planewidth[0];
187 for (
int y = 0; y <
s->block_h; y++) {
188 for (
int x = 0; x <
s->block_w; x++) {
189 map[
in + y *
s->planewidth[0] + x] =
map[
in] + x + y *
s->planewidth[0];
204 #define SHUFFLE_HORIZONTAL(name, type) \
205 static int shuffle_horizontal## name(AVFilterContext *ctx, void *arg, \
206 int jobnr, int nb_jobs) \
208 ShufflePixelsContext *s = ctx->priv; \
209 ThreadData *td = arg; \
210 AVFrame *in = td->in; \
211 AVFrame *out = td->out; \
213 for (int p = 0; p < s->nb_planes; p++) { \
214 const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs; \
215 const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs; \
216 type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
217 const type *src = (const type *)(in->data[p] + \
218 slice_start * in->linesize[p]); \
219 const int32_t *map = s->map; \
221 for (int y = slice_start; y < slice_end; y++) { \
222 for (int x = 0; x < s->planewidth[p]; x++) { \
223 dst[x] = src[map[x]]; \
226 dst += out->linesize[p] / sizeof(type); \
227 src += in->linesize[p] / sizeof(type); \
237 #define SHUFFLE_VERTICAL(name, type) \
238 static int shuffle_vertical## name(AVFilterContext *ctx, void *arg, \
239 int jobnr, int nb_jobs) \
241 ShufflePixelsContext *s = ctx->priv; \
242 ThreadData *td = arg; \
243 AVFrame *in = td->in; \
244 AVFrame *out = td->out; \
246 for (int p = 0; p < s->nb_planes; p++) { \
247 const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs; \
248 const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs; \
249 type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
250 const int32_t *map = s->map; \
252 for (int y = slice_start; y < slice_end; y++) { \
253 const type *src = (const type *)(in->data[p] + \
254 map[y] * in->linesize[p]); \
256 memcpy(dst, src, s->linesize[p]); \
257 dst += out->linesize[p] / sizeof(type); \
267 #define SHUFFLE_BLOCK(name, type) \
268 static int shuffle_block## name(AVFilterContext *ctx, void *arg, \
269 int jobnr, int nb_jobs) \
271 ShufflePixelsContext *s = ctx->priv; \
272 ThreadData *td = arg; \
273 AVFrame *in = td->in; \
274 AVFrame *out = td->out; \
276 for (int p = 0; p < s->nb_planes; p++) { \
277 const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs; \
278 const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs; \
279 type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
280 const type *src = (const type *)in->data[p]; \
281 const int32_t *map = s->map + slice_start * s->planewidth[p]; \
283 for (int y = slice_start; y < slice_end; y++) { \
284 for (int x = 0; x < s->planewidth[p]; x++) { \
285 int ymap = map[x] / s->planewidth[p]; \
286 int xmap = map[x] % s->planewidth[p]; \
288 dst[x] = src[xmap + ymap * in->linesize[p] / sizeof(type)]; \
291 dst += out->linesize[p] / sizeof(type); \
292 map += s->planewidth[p]; \
318 s->depth =
desc->comp[0].depth;
324 s->planewidth[0] =
s->planewidth[3] =
inlink->w;
327 s->planeheight[0] =
s->planeheight[3] =
inlink->h;
335 s->shuffle_pixels =
s->depth <= 8 ? shuffle_horizontal8 : shuffle_horizontal16;
336 s->nb_blocks = (
s->planewidth[0] +
s->block_w - 1) /
s->block_w;
339 s->shuffle_pixels =
s->depth <= 8 ? shuffle_vertical8 : shuffle_vertical16;
340 s->nb_blocks = (
s->planeheight[0] +
s->block_h - 1) /
s->block_h;
343 s->shuffle_pixels =
s->depth <= 8 ? shuffle_block8 : shuffle_block16;
344 s->nb_blocks = (
s->planeheight[0] /
s->block_h) *
345 (
s->planewidth[0] /
s->block_w);
405 #define OFFSET(x) offsetof(ShufflePixelsContext, x)
406 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
447 .
name =
"shufflepixels",
450 .priv_class = &shufflepixels_class,
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
AVFILTER_DEFINE_CLASS(shufflepixels)
#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
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
#define SHUFFLE_BLOCK(name, type)
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
#define SHUFFLE_HORIZONTAL(name, type)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
static void make_horizontal_map(AVFilterContext *ctx)
static const AVFilterPad shufflepixels_inputs[]
This structure describes decoded (raw) audio or video data.
AVFilter ff_vf_shufflepixels
const char * name
Filter name.
AVFormatInternal * internal
An opaque field for libavformat internal usage.
A link between two filters.
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
#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_GRAY16
static const AVOption shufflepixels_options[]
A filter pad used for either input or output.
static const AVFilterPad shufflepixels_outputs[]
#define AV_PIX_FMT_YUV444P10
#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
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
#define AV_PIX_FMT_YUV444P16
#define AV_CEIL_RSHIFT(a, b)
static int query_formats(AVFilterContext *ctx)
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static const AVFilterPad outputs[]
static enum AVPixelFormat pix_fmts[]
static void make_vertical_map(AVFilterContext *ctx)
#define AV_PIX_FMT_GRAY14
#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.
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
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
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
Context structure for the Lagged Fibonacci PRNG.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_PIX_FMT_YUV444P12
static av_cold void uninit(AVFilterContext *ctx)
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
#define AV_PIX_FMT_YUVA444P10
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> 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.
const char * name
Pad name.
#define AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUVA444P9
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
static int config_output(AVFilterLink *outlink)
int(* shuffle_pixels)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
@ 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...
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
const VDPAUPixFmtMap * map
#define flags(name, subs,...)
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
#define SHUFFLE_VERTICAL(name, type)
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
#define AV_PIX_FMT_YUV444P14
static void make_block_map(AVFilterContext *ctx)