68 #define OFFSET(x) offsetof(EdgeDetectContext, x)
69 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
93 edgedetect->
low_u8 = edgedetect->
low * 255. + .5;
130 for (p = 0; p < edgedetect->
nb_planes; p++) {
132 int vsub = p ?
desc->log2_chroma_h : 0;
133 int hsub = p ?
desc->log2_chroma_w : 0;
147 uint8_t *dst,
int dst_linesize,
152 memcpy(dst,
src,
w); dst += dst_linesize;
src += src_linesize;
154 memcpy(dst,
src,
w); dst += dst_linesize;
src += src_linesize;
156 for (j = 2; j <
h - 2; j++) {
160 for (
i = 2;
i <
w - 2;
i++) {
162 dst[
i] = ((
src[-2*src_linesize +
i-2] +
src[2*src_linesize +
i-2]) * 2
163 + (
src[-2*src_linesize +
i-1] +
src[2*src_linesize +
i-1]) * 4
164 + (
src[-2*src_linesize +
i ] +
src[2*src_linesize +
i ]) * 5
165 + (
src[-2*src_linesize +
i+1] +
src[2*src_linesize +
i+1]) * 4
166 + (
src[-2*src_linesize +
i+2] +
src[2*src_linesize +
i+2]) * 2
168 + (
src[ -src_linesize +
i-2] +
src[ src_linesize +
i-2]) * 4
169 + (
src[ -src_linesize +
i-1] +
src[ src_linesize +
i-1]) * 9
170 + (
src[ -src_linesize +
i ] +
src[ src_linesize +
i ]) * 12
171 + (
src[ -src_linesize +
i+1] +
src[ src_linesize +
i+1]) * 9
172 + (
src[ -src_linesize +
i+2] +
src[ src_linesize +
i+2]) * 4
178 +
src[
i+2] * 5) / 159;
183 dst[
i + 1] =
src[
i + 1];
189 memcpy(dst,
src,
w); dst += dst_linesize;
src += src_linesize;
215 int tanpi8gx, tan3pi8gx;
220 tanpi8gx = 27146 * gx;
221 tan3pi8gx = 158218 * gx;
230 uint16_t *dst,
int dst_linesize,
231 int8_t *dir,
int dir_linesize,
236 for (j = 1; j <
h - 1; j++) {
240 for (
i = 1;
i <
w - 1;
i++) {
242 -1*
src[-src_linesize +
i-1] + 1*
src[-src_linesize +
i+1]
244 -1*
src[ src_linesize +
i-1] + 1*
src[ src_linesize +
i+1];
246 -1*
src[-src_linesize +
i-1] + 1*
src[ src_linesize +
i-1]
247 -2*
src[-src_linesize +
i ] + 2*
src[ src_linesize +
i ]
248 -1*
src[-src_linesize +
i+1] + 1*
src[ src_linesize +
i+1];
257 uint8_t *dst,
int dst_linesize,
258 const int8_t *dir,
int dir_linesize,
259 const uint16_t *
src,
int src_linesize)
263 #define COPY_MAXIMA(ay, ax, by, bx) do { \
264 if (src[i] > src[(ay)*src_linesize + i+(ax)] && \
265 src[i] > src[(by)*src_linesize + i+(bx)]) \
266 dst[i] = av_clip_uint8(src[i]); \
269 for (j = 1; j <
h - 1; j++) {
273 for (
i = 1;
i <
w - 1;
i++) {
285 uint8_t *dst,
int dst_linesize,
290 for (j = 0; j <
h; j++) {
291 for (
i = 0;
i <
w;
i++) {
297 if (!(!
i ||
i ==
w - 1 || !j || j ==
h - 1) &&
299 (
src[-src_linesize +
i-1] > high ||
300 src[-src_linesize +
i ] > high ||
301 src[-src_linesize +
i+1] > high ||
304 src[ src_linesize +
i-1] > high ||
305 src[ src_linesize +
i ] > high ||
306 src[ src_linesize +
i+1] > high))
317 uint8_t *dst,
int dst_linesize,
322 for (j = 0; j <
h; j++) {
323 for (
i = 0;
i <
w;
i++)
324 dst[
i] = (dst[
i] +
src[
i]) >> 1;
350 for (p = 0; p < edgedetect->
nb_planes; p++) {
361 in->data[p],
in->linesize[p],
369 in->data[p],
in->linesize[p]);
388 out->data[p],
out->linesize[p],
393 out->data[p],
out->linesize[p],
394 in->data[p],
in->linesize[p]);
408 for (p = 0; p < edgedetect->
nb_planes; p++) {
435 .
name =
"edgedetect",
443 .priv_class = &edgedetect_class,
static const AVFilterPad inputs[]
static const AVFilterPad outputs[]
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
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Main libavfilter public API header.
#define flags(name, subs,...)
#define AV_CEIL_RSHIFT(a, b)
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
mode
Use these values in ebur128_init (or'ed).
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
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.
static void direct(const float *in, const FFTComplex *ir, int len, float *out)
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_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
@ 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
Describe the class of an AVClass context structure.
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.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
struct plane_info planes[3]
static int get_rounded_direction(int gx, int gy)
AVFilter ff_vf_edgedetect
static void color_mix(int w, int h, uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize)
static void double_threshold(int low, int high, int w, int h, uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize)
static const AVFilterPad edgedetect_outputs[]
static void sobel(int w, int h, uint16_t *dst, int dst_linesize, int8_t *dir, int dir_linesize, const uint8_t *src, int src_linesize)
static const AVOption edgedetect_options[]
#define COPY_MAXIMA(ay, ax, by, bx)
static int query_formats(AVFilterContext *ctx)
static void gaussian_blur(AVFilterContext *ctx, int w, int h, uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize)
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
AVFILTER_DEFINE_CLASS(edgedetect)
static int config_props(AVFilterLink *inlink)
static av_cold int init(AVFilterContext *ctx)
static av_cold void uninit(AVFilterContext *ctx)
static const AVFilterPad edgedetect_inputs[]
static void non_maximum_suppression(int w, int h, uint8_t *dst, int dst_linesize, const int8_t *dir, int dir_linesize, const uint16_t *src, int src_linesize)
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.