Go to the documentation of this file.
78 for (
i = 0;
i <
s->nb_inputs;
i++) {
87 s->wfactor +=
s->weights[
i];
91 for (;
i <
s->nb_inputs;
i++) {
92 s->weights[
i] =
s->weights[last];
93 s->wfactor +=
s->weights[
i];
96 s->wfactor = 1 /
s->wfactor;
98 s->wfactor =
s->scale;
109 s->tmix = !strcmp(
ctx->filter->name,
"tmix");
111 s->frames =
av_calloc(
s->nb_inputs,
sizeof(*
s->frames));
115 s->weights =
av_calloc(
s->nb_inputs,
sizeof(*
s->weights));
120 for (
int i = 0;
i <
s->nb_inputs;
i++) {
151 for (p = 0; p <
s->nb_planes; p++) {
152 const int slice_start = (
s->height[p] * jobnr) / nb_jobs;
153 const int slice_end = (
s->height[p] * (jobnr+1)) / nb_jobs;
154 uint8_t *dst =
out->data[p] + slice_start *
out->linesize[p];
156 for (y = slice_start; y <
slice_end; y++) {
157 for (x = 0; x <
s->linesize[p]; x++) {
160 for (
i = 0;
i <
s->nb_inputs;
i++) {
169 dst +=
out->linesize[p];
173 for (p = 0; p <
s->nb_planes; p++) {
174 const int slice_start = (
s->height[p] * jobnr) / nb_jobs;
175 const int slice_end = (
s->height[p] * (jobnr+1)) / nb_jobs;
176 uint16_t *dst = (uint16_t *)(
out->data[p] + slice_start *
out->linesize[p]);
178 for (y = slice_start; y <
slice_end; y++) {
179 for (x = 0; x <
s->linesize[p] / 2; x++) {
182 for (
i = 0;
i <
s->nb_inputs;
i++) {
191 dst +=
out->linesize[p] / 2;
209 for (
i = 0;
i <
s->nb_inputs;
i++) {
214 if (
ctx->is_disabled) {
247 for (
i = 1;
i <
s->nb_inputs;
i++) {
259 s->depth =
s->desc->comp[0].depth;
260 s->max = (1 <<
s->depth) - 1;
266 s->height[0] =
s->height[3] =
inlink->h;
283 for (
i = 0;
i <
s->nb_inputs;
i++) {
307 for (
i = 0;
i <
ctx->nb_inputs;
i++)
310 for (
i = 0;
i <
s->nb_frames &&
s->frames;
i++)
317 char *res,
int res_len,
int flags)
334 #define OFFSET(x) offsetof(MixContext, x)
335 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
336 #define TFLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
358 #if CONFIG_MIX_FILTER
365 .priv_class = &mix_class,
378 #if CONFIG_TMIX_FILTER
387 if (
s->nb_inputs == 1)
390 if (
s->nb_frames <
s->nb_inputs) {
391 s->frames[
s->nb_frames] =
in;
393 if (
s->nb_frames <
s->nb_inputs)
397 memmove(&
s->frames[0], &
s->frames[1],
sizeof(*
s->frames) * (
s->nb_inputs - 1));
398 s->frames[
s->nb_inputs - 1] =
in;
401 if (
ctx->is_disabled) {
411 out->pts =
s->frames[0]->pts;
420 static const AVOption tmix_options[] = {
431 .filter_frame = tmix_filter_frame,
442 .priv_class = &tmix_class,
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
static int parse_weights(AVFilterContext *ctx)
static int mix(int c0, int c1)
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
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
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
char * av_asprintf(const char *fmt,...)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
This structure describes decoded (raw) audio or video data.
static av_cold void uninit(AVFilterContext *ctx)
const char * name
Filter name.
@ EXT_INFINITY
Extend the frame to infinity.
AVFormatInternal * internal
An opaque field for libavformat internal usage.
A link between two filters.
static int mix_frames(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int ff_insert_inpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new input pad for the filter.
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
@ EXT_STOP
Completely stop all streams with this one.
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
static double val(void *priv, double ch)
static int activate(AVFilterContext *ctx)
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
A filter pad used for either input or output.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int config_output(AVFilterLink *outlink)
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
#define AV_CEIL_RSHIFT(a, b)
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok().
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown or variable; if left to 0/0,...
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
int av_sscanf(const char *string, const char *format,...)
See libc sscanf manual for more information.
Describe the class of an AVClass context structure.
#define fs(width, name, subs,...)
Rational number (pair of numerator and denominator).
static int process_frame(FFFrameSync *fs)
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.
static int query_formats(AVFilterContext *ctx)
int format
agreed upon media format
#define AV_PIX_FMT_FLAG_BITSTREAM
All values of a component are bit-wise packed end to end.
char * weights_str
string for custom weights for every input
AVFilterContext * src
source filter
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
#define AVFILTER_DEFINE_CLASS(fname)
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 w
agreed upon image width
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Used for passing data between threads.
const char * name
Pad name.
enum AVMediaType type
AVFilterPad type.
float * weights
custom weights for every input
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
static av_cold int init(AVFilterContext *ctx)
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
int h
agreed upon image height
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link.
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
static const AVOption mix_options[]
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
#define flags(name, subs,...)
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
static const AVFilterPad outputs[]
const AVPixFmtDescriptor * desc
int nb_inputs
number of inputs