46 #define OFFSET(x) offsetof(CoverContext, x)
47 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
78 for (p = 0; p < 3; p++) {
83 for (y = 0; y <
h; y++) {
84 for (x = 0; x < w; x++) {
105 for (y = 0; y <
h; y++) {
106 for (x = 0; x < w; x++) {
110 int scale = 65536 / (x + 1);
111 s += data[-1 + y*
stride] * scale;
115 int scale = 65536 / (y + 1);
116 s += data[x -
stride] * scale;
120 int scale = 65536 / (w - x);
121 s += data[w + y*
stride] * scale;
125 int scale = 65536 / (h - y);
126 s += data[x + h*
stride] * scale;
129 data[x + y*
stride] = c ? (s + (c>>1)) / c : 0;
140 int x = -1, y = -1, w = -1,
h = -1;
147 if (ex && ey && ew && eh) {
148 x = strtol(ex->
value, &xendptr, 10);
149 y = strtol(ey->
value, ¥dptr, 10);
150 w = strtol(ew->
value, &wendptr, 10);
151 h = strtol(eh->
value, &hendptr, 10);
154 if (!xendptr || *xendptr || !yendptr || *yendptr ||
155 !wendptr || *wendptr || !hendptr || !hendptr
182 x = av_clip(x, 0, in->
width - w);
183 y = av_clip(y, 0, in->
height -
h);
188 blur (cover, in, x, y);
251 .
name =
"cover_rect",
257 .
inputs = cover_rect_inputs,
259 .priv_class = &cover_rect_class,
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static int query_formats(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
static av_cold int init(AVFilterContext *ctx)
const char * name
Pad name.
AVFilter ff_vf_cover_rect
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
AVDictionary * metadata
metadata.
A filter pad used for either input or output.
A link between two filters.
int width
width and height of the video frame
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define AV_DICT_MATCH_CASE
Only get an entry with exact-case key match.
static void blur(CoverContext *cover, AVFrame *in, int offx, int offy)
#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
simple assert() macros that are a bit more flexible than ISO C assert().
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
static void cover_rect(CoverContext *cover, AVFrame *in, int offx, int offy)
int ff_load_image(uint8_t *data[4], int linesize[4], int *w, int *h, enum AVPixelFormat *pix_fmt, const char *filename, void *log_ctx)
Load image from filename and put the resulting image in data.
static const AVFilterPad outputs[]
static av_cold void uninit(AVFilterContext *ctx)
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
static const AVFilterPad inputs[]
static const AVFilterPad cover_rect_outputs[]
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
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_log(ac->avr, AV_LOG_TRACE,"%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-> in
static const AVOption cover_rect_options[]
Describe the class of an AVClass context structure.
const char * name
Filter name.
AVFILTER_DEFINE_CLASS(cover_rect)
AVFilterLink ** outputs
array of pointers to output links
static enum AVPixelFormat pix_fmts[]
int av_frame_make_writable(AVFrame *frame)
Ensure that the frame data is writable, avoiding data copy if possible.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static const AVFilterPad cover_rect_inputs[]
GLint GLenum GLboolean GLsizei stride
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
AVFilterContext * dst
dest filter
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
AVPixelFormat
Pixel format.
mode
Use these values in ebur128_init (or'ed).
Miscellaneous utilities which make use of the libavformat library.
#define AV_CEIL_RSHIFT(a, b)