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42 #define OFFSET(x) offsetof(StreamSelectContext, x)
43 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
44 #define TFLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
58 int i, j,
ret = 0, have_out = 0;
60 for (
i = 0;
i <
ctx->nb_inputs;
i++) {
65 for (j = 0; j <
ctx->nb_inputs; j++) {
66 for (
i = 0;
i <
s->nb_map;
i++) {
70 if (
s->is_audio &&
s->last_pts[j] ==
in[j]->pts &&
71 ctx->outputs[
i]->frame_count_in > 0)
78 s->last_pts[j] =
in[j]->pts;
103 const int inlink_idx =
s->map[outlink_idx];
109 "with settings from input link %d\n",
110 outlink_idx, inlink_idx);
112 switch (outlink->
type) {
129 if (
s->fs.opaque ==
s)
139 for (
i = 0;
i <
ctx->nb_inputs;
i++) {
140 in[
i].time_base =
ctx->inputs[
i]->time_base;
155 const char *padtype = is_input ?
"in" :
"out";
158 for (
i = 0;
i < nb_pads;
i++) {
196 new_map =
av_calloc(
s->nb_inputs,
sizeof(*new_map));
202 const int n = strtol(
map, &p, 0);
210 if (new_nb_map >=
s->nb_inputs) {
212 "input pads available\n",
s->nb_inputs);
217 if (n < 0 || n >=
ctx->nb_inputs) {
219 "(there is only %d input streams defined)\n",
226 new_map[new_nb_map++] = n;
237 s->nb_map = new_nb_map;
245 char *res,
int res_len,
int flags)
247 if (!strcmp(cmd,
"map")) {
260 int ret, nb_outputs = 0;
261 char *
map =
s->map_str;
263 if (!strcmp(
ctx->filter->name,
"astreamselect"))
276 s->last_pts =
av_calloc(
s->nb_inputs,
sizeof(*
s->last_pts));
285 ctx->nb_inputs,
ctx->nb_outputs);
299 for (
int i = 0;
i <
ctx->nb_inputs;
i++)
302 for (
int i = 0;
i <
ctx->nb_outputs;
i++)
312 for (
i = 0;
i <
ctx->nb_inputs;
i++) {
331 .
name =
"streamselect",
339 .priv_class = &streamselect_class,
343 #define astreamselect_options streamselect_options
347 .
name =
"astreamselect",
355 .priv_class = &astreamselect_class,
A list of supported channel layouts.
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
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.
enum MovChannelLayoutTag * layouts
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,...)
AVFilter ff_vf_streamselect
This structure describes decoded (raw) audio or video data.
#define AV_LOG_VERBOSE
Detailed information.
static int parse_mapping(AVFilterContext *ctx, const char *map)
const char * name
Filter name.
A link between two filters.
int channels
Number of channels.
static int process_frame(FFFrameSync *fs)
static int ff_insert_inpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new input pad for the filter.
@ EXT_STOP
Completely stop all streams with this one.
static const AVOption streamselect_options[]
int avfilter_config_links(AVFilterContext *filter)
Negotiate the media format, dimensions, etc of all inputs to a filter.
#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.
enum AVMediaType type
filter media type
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define FF_OUTLINK_IDX(link)
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
static int query_formats(AVFilterContext *ctx)
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown or variable; if left to 0/0,...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
static int activate(AVFilterContext *ctx)
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.
Describe the class of an AVClass context structure.
static int config_output(AVFilterLink *outlink)
#define fs(width, name, subs,...)
uint64_t channel_layout
channel layout of current buffer (see libavutil/channel_layout.h)
AVFILTER_DEFINE_CLASS(streamselect)
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
int(* config_props)(AVFilterLink *link)
Link configuration callback.
static av_cold int init(AVFilterContext *ctx)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
int format
agreed upon media format
AVFilterContext * src
source filter
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 sample_rate
samples per second
#define i(width, name, range_min, range_max)
int w
agreed upon image width
const char * name
Pad name.
enum AVMediaType type
AVFilterPad type.
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
int h
agreed upon image height
static int ff_insert_outpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new output pad for the filter.
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link.
const VDPAUPixFmtMap * map
static av_cold void uninit(AVFilterContext *ctx)
#define flags(name, subs,...)
static int parse_definition(AVFilterContext *ctx, int nb_pads, int is_input, int is_audio)
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
AVFilter ff_af_astreamselect
void ff_filter_set_ready(AVFilterContext *filter, unsigned priority)
Mark a filter ready and schedule it for activation.