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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"

Go to the source code of this file.

Data Structures

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
 

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...
 
static int return_or_keep_frame (BufferSinkContext *buf, AVFrame *out, AVFrame *in, int flags)
 
static int get_frame_internal (AVFilterContext *ctx, AVFrame *frame, int flags, int samples)
 
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...
 
AVBufferSinkParamsav_buffersink_params_alloc (void)
 Create an AVBufferSinkParams structure. More...
 
AVABufferSinkParamsav_abuffersink_params_alloc (void)
 Create an AVABufferSinkParams structure. More...
 
static av_cold int common_init (AVFilterContext *ctx)
 
static int activate (AVFilterContext *ctx)
 
void av_buffersink_set_frame_size (AVFilterContext *ctx, unsigned frame_size)
 Set the frame size for an audio buffer sink. More...
 
static av_cold int vsink_init (AVFilterContext *ctx, void *opaque)
 
static int vsink_query_formats (AVFilterContext *ctx)
 
static av_cold int asink_init (AVFilterContext *ctx, void *opaque)
 
static int asink_query_formats (AVFilterContext *ctx)
 
 AVFILTER_DEFINE_CLASS (buffersink)
 
 AVFILTER_DEFINE_CLASS (abuffersink)
 

Variables

static const AVOption buffersink_options []
 
static const AVOption abuffersink_options []
 
static const AVFilterPad avfilter_vsink_buffer_inputs []
 
AVFilter ff_vsink_buffer
 
static const AVFilterPad avfilter_asink_abuffer_inputs []
 
AVFilter ff_asink_abuffer
 

Detailed Description

buffer sink

Definition in file buffersink.c.

Macro Definition Documentation

#define FF_INTERNAL_FIELDS   1

Definition at line 32 of file buffersink.c.

#define NB_ITEMS (   list)    (list ## _size / sizeof(*list))

Definition at line 63 of file buffersink.c.

Referenced by asink_query_formats(), and vsink_query_formats().

#define FIFO_INIT_SIZE   8

Definition at line 64 of file buffersink.c.

#define FIFO_INIT_ELEMENT_SIZE   sizeof(void *)

Definition at line 65 of file buffersink.c.

#define MAKE_AVFILTERLINK_ACCESSOR (   type,
  field 
)
Value:
type av_buffersink_get_##field(const AVFilterContext *ctx) { \
return ctx->inputs[0]->field; \
}
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:331
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static int activate(AVFilterContext *ctx)
Definition: buffersink.c:158
return
AVFormatContext * ctx
Definition: movenc.c:48
GLint GLenum type
Definition: opengl_enc.c:105
An instance of a filter.
Definition: avfilter.h:323
int(* activate)(AVFilterContext *ctx)
Filter activation function.
Definition: avfilter.h:312
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:326

Definition at line 183 of file buffersink.c.

#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); \
}
#define av_log(a,...)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AVERROR(e)
Definition: error.h:43
return
AVFormatContext * ctx
Definition: movenc.c:48
void * buf
Definition: avisynth_c.h:690

Definition at line 218 of file buffersink.c.

Referenced by asink_query_formats(), and vsink_query_formats().

#define OFFSET (   x)    offsetof(BufferSinkContext, x)

Definition at line 316 of file buffersink.c.

Definition at line 323 of file buffersink.c.

Definition at line 323 of file buffersink.c.

Function Documentation

static int return_or_keep_frame ( BufferSinkContext buf,
AVFrame out,
AVFrame in,
int  flags 
)
static

Definition at line 72 of file buffersink.c.

Referenced by get_frame_internal().

static int get_frame_internal ( AVFilterContext ctx,
AVFrame frame,
int  flags,
int  samples 
)
static

Definition at line 86 of file buffersink.c.

Referenced by av_buffersink_get_frame_flags(), and av_buffersink_get_samples().

static av_cold int common_init ( AVFilterContext ctx)
static

Definition at line 150 of file buffersink.c.

Referenced by asink_init(), and vsink_init().

static int activate ( AVFilterContext ctx)
static

Definition at line 158 of file buffersink.c.

static av_cold int vsink_init ( AVFilterContext ctx,
void opaque 
)
static

Definition at line 204 of file buffersink.c.

static int vsink_query_formats ( AVFilterContext ctx)
static

Definition at line 225 of file buffersink.c.

static av_cold int asink_init ( AVFilterContext ctx,
void opaque 
)
static

Definition at line 247 of file buffersink.c.

static int asink_query_formats ( AVFilterContext ctx)
static

Definition at line 264 of file buffersink.c.

AVFILTER_DEFINE_CLASS ( buffersink  )
AVFILTER_DEFINE_CLASS ( abuffersink  )

Variable Documentation

const AVOption buffersink_options[]
static
Initial value:
= {
{ "pix_fmts", "set the supported pixel formats", OFFSET(pixel_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
{ NULL },
}
#define NULL
Definition: coverity.c:32
#define FLAGS
Definition: buffersink.c:323
offset must point to a pointer immediately followed by an int for the length
Definition: opt.h:229
#define OFFSET(x)
Definition: buffersink.c:316

Definition at line 318 of file buffersink.c.

const AVOption abuffersink_options[]
static
Initial value:
= {
{ "sample_fmts", "set the supported sample formats", OFFSET(sample_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
{ "sample_rates", "set the supported sample rates", OFFSET(sample_rates), AV_OPT_TYPE_BINARY, .flags = FLAGS },
{ "channel_layouts", "set the supported channel layouts", OFFSET(channel_layouts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
{ "channel_counts", "set the supported channel counts", OFFSET(channel_counts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
{ "all_channel_counts", "accept all channel counts", OFFSET(all_channel_counts), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
{ NULL },
}
#define NULL
Definition: coverity.c:32
#define FLAGS
Definition: buffersink.c:323
static const uint8_t channel_counts[7]
Definition: dca_lbr.c:109
offset must point to a pointer immediately followed by an int for the length
Definition: opt.h:229
#define OFFSET(x)
Definition: buffersink.c:316
static const uint16_t channel_layouts[7]
Definition: dca_lbr.c:113
sample_rates
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:701

Definition at line 324 of file buffersink.c.

const AVFilterPad avfilter_vsink_buffer_inputs[]
static
Initial value:
= {
{
.name = "default",
},
{ NULL }
}
#define NULL
Definition: coverity.c:32

Definition at line 337 of file buffersink.c.

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,
}
#define NULL
Definition: coverity.c:32
static av_cold int vsink_init(AVFilterContext *ctx, void *opaque)
Definition: buffersink.c:204
static int vsink_query_formats(AVFilterContext *ctx)
Definition: buffersink.c:225
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
static int activate(AVFilterContext *ctx)
Definition: buffersink.c:158
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:389
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:379
static int query_formats(AVFilterContext *ctx)
Definition: aeval.c:244
static const AVFilterPad avfilter_vsink_buffer_inputs[]
Definition: buffersink.c:337

Definition at line 345 of file buffersink.c.

const AVFilterPad avfilter_asink_abuffer_inputs[]
static
Initial value:
= {
{
.name = "default",
},
{ NULL }
}
#define NULL
Definition: coverity.c:32

Definition at line 358 of file buffersink.c.

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,
}
#define NULL
Definition: coverity.c:32
static av_cold int asink_init(AVFilterContext *ctx, void *opaque)
Definition: buffersink.c:247
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
static int activate(AVFilterContext *ctx)
Definition: buffersink.c:158
static const AVFilterPad avfilter_asink_abuffer_inputs[]
Definition: buffersink.c:358
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:389
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:379
static int query_formats(AVFilterContext *ctx)
Definition: aeval.c:244
static int asink_query_formats(AVFilterContext *ctx)
Definition: buffersink.c:264

Definition at line 366 of file buffersink.c.