65 static const char *
const var_names[] = {
"X",
"Y",
"W",
"H",
"SW",
"SH",
"T",
"N",
"A",
"B",
"TOP",
"BOTTOM",
NULL };
66 enum {
VAR_X,
VAR_Y,
VAR_W,
VAR_H,
VAR_SW,
VAR_SH,
VAR_T,
VAR_N,
VAR_A,
VAR_B,
VAR_TOP,
VAR_BOTTOM,
VAR_VARS_NB };
74 const uint8_t *bottom,
int bottom_linesize,
103 #define COMMON_OPTIONS \
104 { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
105 { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
106 { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
107 { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
108 { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, "mode"},\
109 { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, "mode" },\
110 { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, "mode" },\
111 { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, "mode" },\
112 { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, "mode" },\
113 { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, "mode" },\
114 { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, "mode" },\
115 { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE128}, 0, 0, FLAGS, "mode" },\
116 { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, "mode" },\
117 { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, "mode" },\
118 { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, "mode" },\
119 { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, "mode" },\
120 { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, "mode" },\
121 { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, "mode" },\
122 { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, "mode" },\
123 { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, "mode" },\
124 { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, "mode" },\
125 { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, "mode" },\
126 { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, "mode" },\
127 { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, "mode" },\
128 { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, "mode" },\
129 { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, "mode" },\
130 { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, "mode" },\
131 { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, "mode" },\
132 { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, "mode" },\
133 { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, "mode" },\
134 { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
135 { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
136 { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
137 { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
138 { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
139 { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
140 { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
141 { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
142 { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
143 { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}
145 #define OFFSET(x) offsetof(BlendContext, x)
146 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
150 {
"shortest",
"force termination when the shortest input terminates",
OFFSET(dinput.shortest),
AV_OPT_TYPE_INT, {.i64=0}, 0, 1,
FLAGS },
158 const uint8_t *bottom,
int bottom_linesize,
159 uint8_t *dst,
int dst_linesize,
166 #define DEFINE_BLEND(name, expr) \
167 static void blend_## name(const uint8_t *top, int top_linesize, \
168 const uint8_t *bottom, int bottom_linesize, \
169 uint8_t *dst, int dst_linesize, \
170 int width, int start, int end, \
171 FilterParams *param, double *values) \
173 double opacity = param->opacity; \
176 for (i = start; i < end; i++) { \
177 for (j = 0; j < width; j++) { \
178 dst[j] = top[j] + ((expr) - top[j]) * opacity; \
180 dst += dst_linesize; \
181 top += top_linesize; \
182 bottom += bottom_linesize; \
189 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 255))
190 #define SCREEN(x, a, b) (255 - (x) * ((255 - (a)) * (255 - (b)) / 255))
191 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 255 - ((255 - (b)) << 8) / (a)))
192 #define DODGE(a, b) (((a) == 255) ? (a) : FFMIN(255, (((b) << 8) / (255 - (a)))))
203 DEFINE_BLEND(hardlight, (
B < 128) ? MULTIPLY(2,
B, A) : SCREEN(2, B, A))
209 DEFINE_BLEND(softlight, (A > 127) ? B + (255 - B) * (A - 127.5) / 127.5 * (0.5 -
FFABS(B - 127.5) / 255): B - B * ((127.5 - A) / 127.5) * (0.5 -
FFABS(B - 127.5)/255))
219 static
void blend_expr(const
uint8_t *top,
int top_linesize,
220 const
uint8_t *bottom,
int bottom_linesize,
221 uint8_t *dst,
int dst_linesize,
228 for (y = start; y <
end; y++) {
230 for (x = 0; x <
width; x++) {
238 bottom += bottom_linesize;
245 int slice_start = (td->
h * jobnr ) / nb_jobs;
246 int slice_end = (td->
h * (jobnr+1)) / nb_jobs;
265 td->
w, slice_start, slice_end, td->
param, &values[0]);
283 for (plane = 0; plane < b->
nb_planes; plane++) {
284 int hsub = plane == 1 || plane == 2 ? b->
hsub : 0;
285 int vsub = plane == 1 || plane == 2 ? b->
vsub : 0;
289 ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
290 .w = outw, .h = outh, .param = param, .plane = plane,
317 switch (param->
mode) {
355 param->
blend = blend_expr;
388 #if CONFIG_BLEND_FILTER
403 if (toplink->
w != bottomlink->
w ||
404 toplink->
h != bottomlink->
h ||
408 "(size %dx%d, SAR %d:%d) do not match the corresponding "
409 "second input link %s parameters (%dx%d, SAR %d:%d)\n",
419 outlink->
w = toplink->
w;
420 outlink->
h = toplink->
h;
479 .priv_class = &blend_class,
485 #if CONFIG_TBLEND_FILTER
517 static const AVOption tblend_options[] = {
528 .filter_frame = tblend_filter_frame,
537 .config_props = tblend_config_output,
546 .priv_class = &tblend_class,
FFDualInputContext dinput
static AVFrame * blend_frame(AVFilterContext *ctx, AVFrame *top_buf, const AVFrame *bottom_buf)
static const AVOption blend_options[]
static const char *const var_names[]
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
AVFILTER_DEFINE_CLASS(blend)
void(* blend)(const uint8_t *top, int top_linesize, const uint8_t *bottom, int bottom_linesize, uint8_t *dst, int dst_linesize, int width, int start, int end, struct FilterParams *param, double *values)
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
static const AVFilterPad outputs[]
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Main libavfilter public API header.
int h
agreed upon image height
#define FF_ARRAY_ELEMS(a)
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
static av_cold void uninit(AVFilterContext *ctx)
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
struct AVFilterGraph * graph
filtergraph this filter belongs to
const char * name
Pad name.
AVFilterLink ** inputs
array of pointers to input links
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
static av_cold int end(AVCodecContext *avctx)
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
static double av_q2d(AVRational a)
Convert rational to double.
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of PIX_FMT_YUV440P and setting color_range ...
int nb_threads
Maximum number of threads used by filters in this graph.
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV422P and setting color_...
A filter pad used for either input or output.
A link between two filters.
AVFilterPad * input_pads
array of input pads
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
int width
width and height of the video frame
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
unsigned flags
Link processing flags.
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Frame requests may need to loop in order to be fulfilled.
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown; if left to 0/0, will be automatically be cop...
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void * priv
private data for use by the filter
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
static int config_output(AVFilterLink *outlink)
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link...
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int w
agreed upon image width
static SDL_Surface * screen
static int request_frame(AVFilterLink *outlink)
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV420P and setting color_...
#define FF_CEIL_RSHIFT(a, b)
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static av_cold int init(AVFilterContext *ctx)
AVFilterContext * src
source filter
AVFrame *(* process)(AVFilterContext *ctx, AVFrame *main, const AVFrame *second)
int format
agreed upon media format
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
char * av_strdup(const char *s)
Duplicate the string s.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Describe the class of an AVClass context structure.
static const AVFilterPad inputs[]
const char * name
Filter name.
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
AVFilterLink ** outputs
array of pointers to output links
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static void blend_normal(const uint8_t *top, int top_linesize, const uint8_t *bottom, int bottom_linesize, uint8_t *dst, int dst_linesize, int width, int start, int end, FilterParams *param, double *values)
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
int vsub
chroma subsampling values
planar GBRA 4:4:4:4 32bpp
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV444P and setting color_...
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
avfilter_execute_func * execute
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
AVFilterContext * dst
dest filter
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
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.
#define MULTIPLY(x, a, b)
AVPixelFormat
Pixel format.
const AVFilter * filter
the AVFilter of which this is an instance
static int query_formats(AVFilterContext *ctx)
int64_t frame_count
Number of past frames sent through the link.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
#define AV_NOPTS_VALUE
Undefined timestamp value.
#define DEFINE_BLEND(name, expr)
simple arithmetic expression evaluator