111 double var_values[
VARS_NB], res;
121 var_values[
VAR_A] = (double) inlink->
w / inlink->
h;
125 var_values[
VAR_HSUB] = 1 <<
s->draw.hsub_max;
126 var_values[
VAR_VSUB] = 1 <<
s->draw.vsub_max;
150 if (adjusted_aspect.
num && adjusted_aspect.
den) {
163 s->x = var_values[
VAR_X] = res;
168 s->y = var_values[
VAR_Y] = res;
174 s->x = var_values[
VAR_X] = res;
176 if (
s->x < 0 ||
s->x + inlink->
w >
s->w)
177 s->x = var_values[
VAR_X] = (
s->w - inlink->
w) / 2;
178 if (
s->y < 0 ||
s->y + inlink->
h >
s->h)
179 s->y = var_values[
VAR_Y] = (
s->h - inlink->
h) / 2;
184 if (
s->w < inlink->
w ||
s->h < inlink->
h) {
193 s->inlink_w = inlink->
w;
194 s->inlink_h = inlink->
h;
197 inlink->
w, inlink->
h,
s->w,
s->h,
s->x,
s->y,
198 s->rgba_color[0],
s->rgba_color[1],
s->rgba_color[2],
s->rgba_color[3]);
200 if (
s->x < 0 ||
s->y < 0 ||
201 s->w <= 0 ||
s->h <= 0 ||
202 (
unsigned)
s->x + (
unsigned)inlink->
w >
s->w ||
203 (
unsigned)
s->y + (
unsigned)inlink->
h >
s->h) {
205 "Input area %d:%d:%d:%d not within the padded area 0:0:%d:%d or zero-sized\n",
206 s->x,
s->y,
s->x + inlink->
w,
s->y + inlink->
h,
s->w,
s->h);
214 "Error when evaluating the expression '%s'\n", expr);
234 if (
s->inlink_w <= 0)
238 w + (
s->w -
s->in_w),
239 h + (
s->h -
s->in_h) + (
s->x > 0));
248 int hsub =
s->draw.hsub[plane];
249 int vsub =
s->draw.vsub[plane];
281 ptrdiff_t req_start = (
s->x >>
hsub) *
s->draw.pixelstep[
planes[
i]] +
289 if (start - buf->
data < req_start ||
290 (buf->
data + buf->
size) - end < req_end)
294 int vsub1 =
s->draw.vsub[
planes[j]];
301 if (
FFSIGN(start - end1) !=
FFSIGN(start - end1 - req_start) ||
330 in->width !=
s->inlink_w
331 ||
in->height !=
s->inlink_h
371 for (
i = 0;
i < 4 &&
out->data[
i] &&
out->linesize[
i];
i++) {
372 int hsub =
s->draw.hsub[
i];
373 int vsub =
s->draw.vsub[
i];
374 out->data[
i] -= (
s->x >>
hsub) *
s->draw.pixelstep[
i] +
375 (
s->y >> vsub) *
out->linesize[
i];
387 if (
s->h >
s->y +
s->in_h) {
390 0,
s->y +
s->in_h,
s->w,
s->h -
s->y -
s->in_h);
395 0,
s->y,
s->x,
in->height);
399 out->data,
out->linesize,
in->data,
in->linesize,
400 s->x,
s->y, 0, 0,
in->width,
in->height);
405 s->x +
s->in_w,
s->y,
s->w -
s->x -
s->in_w,
416 #define OFFSET(x) offsetof(PadContext, x)
417 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
460 .priv_class = &pad_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
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Main libavfilter public API header.
common internal and external API header
void ff_copy_rectangle2(FFDrawContext *draw, uint8_t *dst[], int dst_linesize[], uint8_t *src[], int src_linesize[], int dst_x, int dst_y, int src_x, int src_y, int w, int h)
Copy a rectangle from an image to another.
int ff_draw_round_to_sub(FFDrawContext *draw, int sub_dir, int round_dir, int value)
Round a dimension according to subsampling.
int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
Init a draw context.
void ff_draw_color(FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4])
Prepare a color.
void ff_fill_rectangle(FFDrawContext *draw, FFDrawColor *color, uint8_t *dst[], int dst_linesize[], int dst_x, int dst_y, int w, int h)
Fill a rectangle with an uniform color.
AVFilterFormats * ff_draw_supported_pixel_formats(unsigned flags)
Return the list of pixel formats supported by the draw functions.
int av_expr_parse_and_eval(double *d, const char *s, const char *const *const_names, const double *const_values, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), void *opaque, int log_offset, void *log_ctx)
Parse and evaluate an expression.
simple arithmetic expression evaluator
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
AVBufferRef * av_frame_get_plane_buffer(AVFrame *frame, int plane)
Get the buffer reference a given data plane is stored in.
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.
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
#define AV_LOG_VERBOSE
Detailed information.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Various defines for YUV<->RGB conversion.
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static const struct @322 planes[]
#define FF_ARRAY_ELEMS(a)
A reference to a data buffer.
int size
Size of data in bytes.
uint8_t * data
The data buffer.
Describe the class of an AVClass context structure.
AVFilterLink ** inputs
array of pointers to input links
void * priv
private data for use by the filter
AVFilterLink ** outputs
array of pointers to output links
A link between two filters.
int w
agreed upon image width
int h
agreed upon image height
AVFilterContext * src
source filter
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
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.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Rational number (pair of numerator and denominator).
char * w_expr
width expression string
int eval_mode
expression evaluation mode
uint8_t rgba_color[4]
color for the padding area
int in_h
width and height for the padded input video, which has to be aligned to the chroma values in order to...
int h
output dimensions, a value of 0 will result in the input size
char * h_expr
height expression string
char * y_expr
height expression string
char * x_expr
width expression string
int y
offsets of the input area with respect to the padded area
static const AVFilterPad avfilter_vf_pad_inputs[]
static const AVFilterPad avfilter_vf_pad_outputs[]
static int query_formats(AVFilterContext *ctx)
static int buffer_needs_copy(PadContext *s, AVFrame *frame, AVBufferRef *buf)
static const AVOption pad_options[]
static int config_input(AVFilterLink *inlink)
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static const char *const var_names[]
static AVFrame * get_video_buffer(AVFilterLink *inlink, int w, int h)
AVFILTER_DEFINE_CLASS(pad)
static int config_output(AVFilterLink *outlink)
static int frame_needs_copy(PadContext *s, AVFrame *frame)
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.