Go to the documentation of this file.
111 double var_values[
VARS_NB], res;
123 (
double)
inlink->sample_aspect_ratio.num /
inlink->sample_aspect_ratio.den : 1;
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) {
151 adjusted_aspect =
av_div_q(adjusted_aspect,
inlink->sample_aspect_ratio);
163 s->x = var_values[
VAR_X] = res;
168 s->y = var_values[
VAR_Y] = res;
174 s->x = var_values[
VAR_X] = res;
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",
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));
247 for (plane = 0; plane < 4 &&
frame->data[plane] &&
frame->linesize[plane]; plane++) {
248 int hsub =
s->draw.hsub[plane];
249 int vsub =
s->draw.vsub[plane];
250 frame->data[plane] += (
s->x >>
hsub) *
s->draw.pixelstep[plane] +
251 (
s->y >> vsub) *
frame->linesize[plane];
281 ptrdiff_t req_start = (
s->x >>
hsub) *
s->draw.pixelstep[
planes[
i]] +
283 ptrdiff_t req_end = ((
s->w -
s->x -
frame->width) >>
hsub) *
289 if (start - buf->
data < req_start ||
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
336 inlink->dst->inputs[0]->format =
in->format;
337 inlink->dst->inputs[0]->w =
in->width;
338 inlink->dst->inputs[0]->h =
in->height;
340 inlink->dst->inputs[0]->sample_aspect_ratio.den =
in->sample_aspect_ratio.den;
341 inlink->dst->inputs[0]->sample_aspect_ratio.num =
in->sample_aspect_ratio.num;
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,
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
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
char * w_expr
width expression string
int eval_mode
expression evaluation mode
int y
offsets of the input area with respect to the padded area
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
uint8_t * data
The data buffer.
char * y_expr
height expression string
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
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
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
static av_cold int end(AVCodecContext *avctx)
static AVFrame * get_video_buffer(AVFilterLink *inlink, int w, int h)
This structure describes decoded (raw) audio or video data.
static const char *const var_names[]
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
#define AV_LOG_VERBOSE
Detailed information.
const char * name
Filter name.
A link between two filters.
static const AVFilterPad avfilter_vf_pad_outputs[]
int size
Size of data in bytes.
void * priv
private data for use by the filter
A filter pad used for either input or output.
static int config_output(AVFilterLink *outlink)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
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.
static int config_input(AVFilterLink *inlink)
static const AVFilterPad outputs[]
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
AVFILTER_DEFINE_CLASS(pad)
int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
Init a draw context.
int h
output dimensions, a value of 0 will result in the input size
Describe the class of an AVClass context structure.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Rational number (pair of numerator and denominator).
static const AVFilterPad avfilter_vf_pad_inputs[]
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
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
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.
static const AVOption pad_options[]
int format
agreed upon media format
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.
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
AVFilterContext * src
source filter
char * h_expr
height expression string
char * x_expr
width expression string
static int frame_needs_copy(PadContext *s, AVFrame *frame)
static const struct @315 planes[]
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
#define i(width, name, range_min, range_max)
int w
agreed upon image width
AVFilterFormats * ff_draw_supported_pixel_formats(unsigned flags)
Return the list of pixel formats supported by the draw functions.
static int buffer_needs_copy(PadContext *s, AVFrame *frame, AVBufferRef *buf)
int ff_draw_round_to_sub(FFDrawContext *draw, int sub_dir, int round_dir, int value)
Round a dimension according to subsampling.
static int query_formats(AVFilterContext *ctx)
const char * name
Pad name.
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
void ff_draw_color(FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4])
Prepare a color.
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 the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo ug o o w
#define FF_ARRAY_ELEMS(a)
uint8_t rgba_color[4]
color for the padding area
int h
agreed upon image height
A reference to a data buffer.
int in_h
width and height for the padded input video, which has to be aligned to the chroma values in order to...
AVBufferRef * av_frame_get_plane_buffer(AVFrame *frame, int plane)
Get the buffer reference a given data plane is stored in.