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FFmpeg
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libavfilter/fifo.c File Reference
FIFO buffering filter. More...
#include "libavutil/avassert.h"#include "libavutil/channel_layout.h"#include "libavutil/common.h"#include "libavutil/mathematics.h"#include "libavutil/samplefmt.h"#include "audio.h"#include "avfilter.h"#include "internal.h"#include "video.h"
Include dependency graph for libavfilter/fifo.c:
Go to the source code of this file.
Data Structures | |
| struct | Buf |
| struct | FifoContext |
Typedefs | |
| typedef struct Buf | Buf |
Functions | |
| static av_cold int | init (AVFilterContext *ctx) |
| static av_cold void | uninit (AVFilterContext *ctx) |
| static int | add_to_queue (AVFilterLink *inlink, AVFrame *frame) |
| static void | queue_pop (FifoContext *s) |
| static void | buffer_offset (AVFilterLink *link, AVFrame *frame, int offset) |
| Move data pointers and pts offset samples forward. More... | |
| static int | calc_ptr_alignment (AVFrame *frame) |
| static int | return_audio_frame (AVFilterContext *ctx) |
| static int | request_frame (AVFilterLink *outlink) |
Variables | |
| static const AVFilterPad | avfilter_vf_fifo_inputs [] |
| static const AVFilterPad | avfilter_vf_fifo_outputs [] |
| AVFilter | avfilter_vf_fifo |
| static const AVFilterPad | avfilter_af_afifo_inputs [] |
| static const AVFilterPad | avfilter_af_afifo_outputs [] |
| AVFilter | avfilter_af_afifo |
Detailed Description
FIFO buffering filter.
Definition in file libavfilter/fifo.c.
Typedef Documentation
Function Documentation
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Definition at line 76 of file libavfilter/fifo.c.
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Move data pointers and pts offset samples forward.
Definition at line 104 of file libavfilter/fifo.c.
Referenced by return_audio_frame().
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Definition at line 129 of file libavfilter/fifo.c.
Referenced by return_audio_frame().
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Definition at line 54 of file libavfilter/fifo.c.
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Definition at line 92 of file libavfilter/fifo.c.
Referenced by request_frame(), and return_audio_frame().
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Definition at line 222 of file libavfilter/fifo.c.
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Definition at line 146 of file libavfilter/fifo.c.
Referenced by request_frame().
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Definition at line 62 of file libavfilter/fifo.c.
Variable Documentation
| AVFilter avfilter_af_afifo |
Initial value:
= {
.name = "afifo",
.description = NULL_IF_CONFIG_SMALL("Buffer input frames and send them when they are requested."),
.init = init,
.uninit = uninit,
.priv_size = sizeof(FifoContext),
}
static const AVFilterPad avfilter_af_afifo_inputs[]
Definition: libavfilter/fifo.c:275
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: libavutil/internal.h:123
Definition: libavfilter/fifo.c:42
static const AVFilterPad avfilter_af_afifo_outputs[]
Definition: libavfilter/fifo.c:285
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
Definition: filter_design.txt:216
Definition at line 294 of file libavfilter/fifo.c.
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Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.get_audio_buffer = ff_null_get_audio_buffer,
.filter_frame = add_to_queue,
},
{ NULL }
}
static int add_to_queue(AVFilterLink *inlink, AVFrame *frame)
Definition: libavfilter/fifo.c:76
Definition: avutil.h:144
AVFrame * ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples)
get_audio_buffer() handler for filters which simply pass audio along
Definition: audio.c:36
Definition at line 275 of file libavfilter/fifo.c.
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Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.request_frame = request_frame,
},
{ NULL }
}
Definition: avutil.h:144
Definition at line 285 of file libavfilter/fifo.c.
| AVFilter avfilter_vf_fifo |
Initial value:
= {
.name = "fifo",
.description = NULL_IF_CONFIG_SMALL("Buffer input images and send them when they are requested."),
.init = init,
.uninit = uninit,
.priv_size = sizeof(FifoContext),
}
static const AVFilterPad avfilter_vf_fifo_inputs[]
Definition: libavfilter/fifo.c:243
static const AVFilterPad avfilter_vf_fifo_outputs[]
Definition: libavfilter/fifo.c:253
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: libavutil/internal.h:123
Definition: libavfilter/fifo.c:42
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
Definition: filter_design.txt:216
Definition at line 262 of file libavfilter/fifo.c.
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Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.get_video_buffer = ff_null_get_video_buffer,
.filter_frame = add_to_queue,
},
{ NULL }
}
AVFrame * ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
Definition: video.c:35
static int add_to_queue(AVFilterLink *inlink, AVFrame *frame)
Definition: libavfilter/fifo.c:76
Definition: avutil.h:143
Definition at line 243 of file libavfilter/fifo.c.
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Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = request_frame,
},
{ NULL }
}
Definition: avutil.h:143
Definition at line 253 of file libavfilter/fifo.c.
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