buffersink.c File Reference

buffer sink More...

#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "framequeue.h"
#include "audio.h"
#include "avfilter.h"
#include "buffersink.h"
#include "filters.h"
#include "internal.h"

Classes
struct	BufferSinkContext

Macros
#define	FF_INTERNAL_FIELDS   1
#define	NB_ITEMS(list)   (list ## _size / sizeof(*list))
#define	FIFO_INIT_SIZE   8
#define	FIFO_INIT_ELEMENT_SIZE   sizeof(void *)
#define	MAKE_AVFILTERLINK_ACCESSOR(type, field)
#define	CHECK_LIST_SIZE(field)
#define	OFFSET(x)   offsetof(BufferSinkContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Typedefs
typedef struct BufferSinkContext	BufferSinkContext

Functions
int attribute_align_arg	av_buffersink_get_frame (AVFilterContext *ctx, AVFrame *frame)
	Get a frame with filtered data from sink and put it in frame. More...
int attribute_align_arg	av_buffersink_get_frame_flags (AVFilterContext *ctx, AVFrame *frame, int flags)
	Get a frame with filtered data from sink and put it in frame. More...
int attribute_align_arg	av_buffersink_get_samples (AVFilterContext *ctx, AVFrame *frame, int nb_samples)
	Same as av_buffersink_get_frame(), but with the ability to specify the number of samples read. More...
AVBufferSinkParams *	av_buffersink_params_alloc (void)
	Create an AVBufferSinkParams structure. More...
AVABufferSinkParams *	av_abuffersink_params_alloc (void)
	Create an AVABufferSinkParams structure. More...
void	av_buffersink_set_frame_size (AVFilterContext *ctx, unsigned frame_size)
	Set the frame size for an audio buffer sink. More...
	AVFILTER_DEFINE_CLASS (buffersink)
	AVFILTER_DEFINE_CLASS (abuffersink)

Variables
AVFilter	ff_vsink_buffer
AVFilter	ff_asink_abuffer

Detailed Description

buffer sink

Macro Definition Documentation

CHECK_LIST_SIZE

#define CHECK_LIST_SIZE

(

field

)

Value:

if (buf->field ## _size % sizeof(*buf->field)) { \
            av_log(ctx, AV_LOG_ERROR, "Invalid size for " #field ": %d, " \
                   "should be multiple of %d\n", \
                   buf->field ## _size, (int)sizeof(*buf->field)); \
            return AVERROR(EINVAL); \
        }

MAKE_AVFILTERLINK_ACCESSOR

#define MAKE_AVFILTERLINK_ACCESSOR	(		type,
			field
	)

Value:

type av_buffersink_get_##field(const AVFilterContext *ctx) { \
    av_assert0(ctx->filter->activate == activate); \
    return ctx->inputs[0]->field; \
}

Variable Documentation

ff_asink_abuffer

AVFilter ff_asink_abuffer

Initial value:

= {
    .name        = "abuffersink",
    .description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them available to the end of the filter graph."),
    .priv_class  = &abuffersink_class,
    .priv_size   = sizeof(BufferSinkContext),
    .init_opaque = asink_init,

    .query_formats = asink_query_formats,
    .activate    = activate,
    .inputs      = avfilter_asink_abuffer_inputs,
    .outputs     = NULL,
}

ff_vsink_buffer

AVFilter ff_vsink_buffer

Initial value:

= {
    .name        = "buffersink",
    .description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them available to the end of the filter graph."),
    .priv_size   = sizeof(BufferSinkContext),
    .priv_class  = &buffersink_class,
    .init_opaque = vsink_init,

    .query_formats = vsink_query_formats,
    .activate    = activate,
    .inputs      = avfilter_vsink_buffer_inputs,
    .outputs     = NULL,
}