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21 #include "config_components.h"
53 if (
FFABS(sleep) >
s->limit /
s->speed) {
55 "time discontinuity detected: %"PRIi64
" us, resetting\n",
62 for (; sleep > 600000000; sleep -= 600000000)
70 #define OFFSET(x) offsetof(RealtimeContext, x)
71 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
80 #if CONFIG_REALTIME_FILTER
82 static const AVFilterPad avfilter_vf_realtime_inputs[] = {
94 .priv_class = &realtime_class,
102 #if CONFIG_AREALTIME_FILTER
115 .priv_class = &realtime_class,
int64_t av_gettime_relative(void)
Get the current time in microseconds since some unspecified starting point.
#define AV_LOG_WARNING
Something somehow does not look correct.
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
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
#define FILTER_INPUTS(array)
This structure describes decoded (raw) audio or video data.
@ AV_OPT_TYPE_DURATION
Underlying C type is int64_t.
const char * name
Filter name.
A link between two filters.
static const AVOption options[]
A filter pad used for either input or output.
const AVFilterPad ff_video_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_VIDEO.
@ AV_OPT_TYPE_DOUBLE
Underlying C type is double.
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
int av_usleep(unsigned usec)
Sleep for a period of time.
#define FILTER_OUTPUTS(array)
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Describe the class of an AVClass context structure.
const AVFilterPad ff_audio_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_AUDIO.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_NOPTS_VALUE
Undefined timestamp value.
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
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.
const char * name
Pad name.
static double limit(double x)
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
#define AVFILTER_FLAG_METADATA_ONLY
The filter is a "metadata" filter - it does not modify the frame data in any way.
const AVFilter ff_af_arealtime
#define flags(name, subs,...)
AVFILTER_DEFINE_CLASS_EXT(realtime, "(a)realtime", options)
const AVFilter ff_vf_realtime