69 "Error when parsing the expression '%s' for %s\n",
101 int logo_x,
int logo_y,
int logo_w,
int logo_h,
102 unsigned int band,
int show,
int direct)
105 uint64_t interp, weightl, weightr, weightt, weightb,
weight;
108 uint8_t *topleft, *botleft, *topright;
109 unsigned int left_sample, right_sample;
110 int xclipl, xclipr, yclipt, yclipb;
111 int logo_x1, logo_x2, logo_y1, logo_y2;
113 xclipl =
FFMAX(-logo_x, 0);
114 xclipr =
FFMAX(logo_x+logo_w-w, 0);
115 yclipt =
FFMAX(-logo_y, 0);
116 yclipb =
FFMAX(logo_y+logo_h-h, 0);
118 logo_x1 = logo_x + xclipl;
119 logo_x2 = logo_x + logo_w - xclipr - 1;
120 logo_y1 = logo_y + yclipt;
121 logo_y2 = logo_y + logo_h - yclipb - 1;
123 topleft = src+logo_y1 * src_linesize+logo_x1;
124 topright = src+logo_y1 * src_linesize+logo_x2;
125 botleft = src+logo_y2 * src_linesize+logo_x1;
130 dst += (logo_y1 + 1) * dst_linesize;
131 src += (logo_y1 + 1) * src_linesize;
133 for (y = logo_y1+1; y < logo_y2; y++) {
134 left_sample = topleft[src_linesize*(y-logo_y1)] +
135 topleft[src_linesize*(y-logo_y1-1)] +
136 topleft[src_linesize*(y-logo_y1+1)];
137 right_sample = topright[src_linesize*(y-logo_y1)] +
138 topright[src_linesize*(y-logo_y1-1)] +
139 topright[src_linesize*(y-logo_y1+1)];
142 xdst = dst+logo_x1+1,
143 xsrc = src+logo_x1+1; x < logo_x2; x++, xdst++, xsrc++) {
145 if (show && (y == logo_y1+1 || y == logo_y2-1 ||
146 x == logo_x1+1 || x == logo_x2-1)) {
152 weightl = (uint64_t) (logo_x2-x) * (y-logo_y1) * (logo_y2-y) * sar.
den;
153 weightr = (uint64_t)(x-logo_x1) * (y-logo_y1) * (logo_y2-y) * sar.
den;
154 weightt = (uint64_t)(x-logo_x1) * (logo_x2-x) * (logo_y2-y) * sar.
num;
155 weightb = (uint64_t)(x-logo_x1) * (logo_x2-x) * (y-logo_y1) * sar.
num;
158 left_sample * weightl
160 right_sample * weightr
162 (topleft[x-logo_x1] +
163 topleft[x-logo_x1-1] +
164 topleft[x-logo_x1+1]) * weightt
166 (botleft[x-logo_x1] +
167 botleft[x-logo_x1-1] +
168 botleft[x-logo_x1+1]) * weightb;
169 weight = (weightl + weightr + weightt + weightb) * 3
U;
170 interp = (interp + (weight >> 1)) /
weight;
172 if (y >= logo_y+band && y < logo_y+logo_h-band &&
173 x >= logo_x+band && x < logo_x+logo_w-band) {
179 dist =
FFMAX(dist, logo_x-x+band);
180 else if (x >= logo_x+logo_w-band)
181 dist =
FFMAX(dist, x-(logo_x+logo_w-1-band));
184 dist =
FFMAX(dist, logo_y-y+band);
185 else if (y >= logo_y+logo_h-band)
186 dist =
FFMAX(dist, y-(logo_y+logo_h-1-band));
188 *xdst = (*xsrc*dist + interp*(band-dist))/band;
205 #define OFFSET(x) offsetof(DelogoContext, x) 206 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM 259 #define CHECK_UNSET_OPT(opt) \ 260 if (s->opt == -1) { \ 261 av_log(s, AV_LOG_ERROR, "Option %s was not set.\n", #opt); \ 262 return AVERROR(EINVAL); \ 287 if (s->
x + (s->
band - 1) < 0 || s->
x + s->
w - (s->
band*2 - 2) > inlink->
w ||
288 s->
y + (s->
band - 1) < 0 || s->
y + s->
h - (s->
band*2 - 2) > inlink->
h) {
316 if (s->
x + (s->
band - 1) <= 0 || s->
x + s->
w - (s->
band*2 - 2) > inlink->
w ||
317 s->
y + (s->
band - 1) <= 0 || s->
y + s->
h - (s->
band*2 - 2) > inlink->
h) {
319 " auto set the area inside of the frame\n");
322 if (s->
x + (s->
band - 1) <= 0)
324 if (s->
y + (s->
band - 1) <= 0)
326 if (s->
x + s->
w - (s->
band*2 - 2) > inlink->
w)
327 s->
w = inlink->
w - s->
x - (s->
band*2 - 2);
328 if (s->
y + s->
h - (s->
band*2 - 2) > inlink->
h)
329 s->
h = inlink->
h - s->
y - (s->
band*2 - 2);
361 int hsub = plane == 1 || plane == 2 ? hsub0 : 0;
362 int vsub = plane == 1 || plane == 2 ? vsub0 : 0;
368 sar, s->
x>>hsub, s->
y>>vsub,
405 .priv_class = &delogo_class,
409 .
inputs = avfilter_vf_delogo_inputs,
410 .
outputs = avfilter_vf_delogo_outputs,
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
#define AV_LOG_WARNING
Something somehow does not look correct.
Main libavfilter public API header.
int h
agreed upon image height
static void apply_delogo(uint8_t *dst, int dst_linesize, uint8_t *src, int src_linesize, int w, int h, AVRational sar, int logo_x, int logo_y, int logo_w, int logo_h, unsigned int band, int show, int direct)
Apply a simple delogo algorithm to the image in src and put the result in dst.
static int query_formats(AVFilterContext *ctx)
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.
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
static int set_expr(AVExpr **pexpr, const char *expr, const char *option, void *log_ctx)
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
const char * name
Pad name.
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
static int config_input(AVFilterLink *inlink)
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
#define AV_LOG_VERBOSE
Detailed information.
A filter pad used for either input or output.
A link between two filters.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
static const AVFilterPad avfilter_vf_delogo_outputs[]
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
static void direct(const float *in, const FFTComplex *ir, int len, float *out)
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link...
static av_cold int init(AVFilterContext *ctx)
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int w
agreed upon image width
uint8_t nb_components
The number of components each pixel has, (1-4)
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static av_cold void uninit(AVFilterContext *ctx)
static const AVFilterPad outputs[]
int format
agreed upon media format
AVFILTER_DEFINE_CLASS(delogo)
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
static const char *const var_names[]
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
static const AVOption delogo_options[]
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
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
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
const char * name
Filter name.
AVFilterLink ** outputs
array of pointers to output links
static int weight(int i, int blen, int offset)
static enum AVPixelFormat pix_fmts[]
#define flags(name, subs,...)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
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 CHECK_UNSET_OPT(opt)
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
double var_values[VAR_VARS_NB]
common internal and external API header
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
AVFilterContext * dst
dest filter
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.
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
static const AVFilterPad avfilter_vf_delogo_inputs[]
AVPixelFormat
Pixel format.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
simple arithmetic expression evaluator
#define AV_CEIL_RSHIFT(a, b)