libavfilter/buffer.c File Reference

#include "libavutil/audioconvert.h"
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavcodec/avcodec.h"
#include "avfilter.h"
#include "internal.h"
#include "audio.h"
#include "avcodec.h"

Go to the source code of this file.

Functions
void	ff_avfilter_default_free_buffer (AVFilterBuffer *ptr)
	default handler for freeing audio/video buffer when there are no references left
static void	copy_video_props (AVFilterBufferRefVideoProps *dst, AVFilterBufferRefVideoProps *src)
AVFilterBufferRef *	avfilter_ref_buffer (AVFilterBufferRef *ref, int pmask)
	Add a new reference to a buffer.
void	ff_free_pool (AVFilterPool *pool)
static void	store_in_pool (AVFilterBufferRef *ref)
void	avfilter_unref_buffer (AVFilterBufferRef *ref)
	Remove a reference to a buffer.
void	avfilter_unref_bufferp (AVFilterBufferRef **ref)
	Remove a reference to a buffer and set the pointer to NULL.
void	avfilter_copy_buffer_ref_props (AVFilterBufferRef *dst, AVFilterBufferRef *src)
	Copy properties of src to dst, without copying the actual data.
AVFilterBufferRef *	ff_copy_buffer_ref (AVFilterLink *outlink, AVFilterBufferRef *ref)

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Function Documentation

void avfilter_copy_buffer_ref_props	(	AVFilterBufferRef *	dst,
		AVFilterBufferRef *	src
	)

Copy properties of src to dst, without copying the actual data.

Definition at line 184 of file buffer.c.

Referenced by default_start_frame(), end_frame(), ff_copy_buffer_ref(), ff_filter_samples(), ff_inplace_start_frame(), ff_start_frame(), filter_samples(), return_frame(), and start_frame().

AVFilterBufferRef* avfilter_ref_buffer	(	AVFilterBufferRef *	ref,
		int	pmask
	)

Add a new reference to a buffer.

Parameters:

	ref	an existing reference to the buffer
	pmask	a bitmask containing the allowable permissions in the new reference

Returns:

a new reference to the buffer with the same properties as the old, excluding any permissions denied by pmask

Definition at line 51 of file buffer.c.

Referenced by default_start_frame(), end_frame(), ff_inplace_start_frame(), ff_null_start_frame(), filter_frame(), filter_samples(), push_frame(), request_frame(), return_audio_frame(), source_request_frame(), start_frame(), sub2video_push_ref(), try_start_frame(), and vf_next_put_image().

void avfilter_unref_buffer

(

AVFilterBufferRef *

ref

)

Remove a reference to a buffer.

If this is the last reference to the buffer, the buffer itself is also automatically freed.

Parameters:

ref

reference to the buffer, may be NULL

Note:

it is recommended to use avfilter_unref_bufferp() instead of this function

Definition at line 157 of file buffer.c.

Referenced by add_to_queue(), av_buffersink_read_samples(), av_buffersrc_add_frame(), av_buffersrc_add_ref(), avfilter_unref_bufferp(), channelmap_filter_samples(), common_uninit(), end_frame(), ff_buffersink_read_samples_compat(), ff_bufqueue_add(), ff_bufqueue_discard_all(), ff_filter_samples(), ff_filter_samples_framed(), ff_start_frame(), filter_samples(), flush_fifo(), frame_to_buf(), join_request_frame(), lavfi_read_packet(), output_frame(), process_frame(), reap_filters(), request_frame(), return_audio_frame(), start_frame(), try_start_frame(), try_start_next_frame(), uninit(), vf_next_put_image(), and write_to_fifo().

void avfilter_unref_bufferp

(

AVFilterBufferRef **

ref

)

Remove a reference to a buffer and set the pointer to NULL.

If this is the last reference to the buffer, the buffer itself is also automatically freed.

Parameters:

ref

pointer to the buffer reference

Definition at line 178 of file buffer.c.

Referenced by alloc_picture(), avfilter_link_free(), clear_link(), config_output(), end_frame(), exit_program(), ff_inplace_start_frame(), ff_start_frame(), filter_samples(), join_free_buffer(), join_uninit(), main(), queue_picture(), request_frame(), start_frame(), stream_close(), uninit(), write_to_fifo(), and yae_clear().

static void copy_video_props	(	AVFilterBufferRefVideoProps *	dst,
		AVFilterBufferRefVideoProps *	src
	)			[static]

Definition at line 42 of file buffer.c.

Referenced by avfilter_copy_buffer_ref_props(), and avfilter_ref_buffer().

void ff_avfilter_default_free_buffer

(

AVFilterBuffer *

ptr

)

default handler for freeing audio/video buffer when there are no references left

Definition at line 34 of file buffer.c.

Referenced by avfilter_get_audio_buffer_ref_from_arrays(), and avfilter_get_video_buffer_ref_from_arrays().

AVFilterBufferRef* ff_copy_buffer_ref	(	AVFilterLink *	outlink,
		AVFilterBufferRef *	ref
	)

Definition at line 202 of file buffer.c.

Referenced by av_buffersrc_add_ref(), and frame_to_buf().

void ff_free_pool

(

AVFilterPool *

pool

)

Definition at line 91 of file buffer.c.

Referenced by avfilter_link_free(), and store_in_pool().

static void store_in_pool

(

AVFilterBufferRef *

ref

)

[static]

Definition at line 121 of file buffer.c.

Referenced by avfilter_unref_buffer().