libavfilter/buffer.c File Reference

#include "libavutil/audioconvert.h"
#include "libavutil/avassert.h"
#include "libavcodec/avcodec.h"
#include "avfilter.h"
#include "internal.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
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.
int	avfilter_copy_frame_props (AVFilterBufferRef *dst, const AVFrame *src)
	Copy the frame properties of src to dst, without copying the actual image data.
int	avfilter_copy_buf_props (AVFrame *dst, const AVFilterBufferRef *src)
	Copy the frame properties and data pointers of src to dst, without copying the actual data.
void	avfilter_copy_buffer_ref_props (AVFilterBufferRef *dst, AVFilterBufferRef *src)
	Copy properties of src to dst, without copying the actual data.

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Function Documentation

int avfilter_copy_buf_props	(	AVFrame *	dst,
		const AVFilterBufferRef *	src
	)

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

Returns:

0 on success, a negative number on error.

Definition at line 193 of file buffer.c.

Referenced by poll_filters().

void avfilter_copy_buffer_ref_props	(	AVFilterBufferRef *	dst,
		AVFilterBufferRef *	src
	)

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

Definition at line 237 of file buffer.c.

Referenced by avfilter_start_frame(), copy_buffer_ref(), default_start_frame(), end_frame(), filter_samples(), return_frame(), and start_frame().

int avfilter_copy_frame_props	(	AVFilterBufferRef *	dst,
		const AVFrame *	src
	)

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

Returns:

0 on success, a negative number on error.

Definition at line 166 of file buffer.c.

Referenced by avfilter_get_audio_buffer_ref_from_frame(), avfilter_get_video_buffer_ref_from_frame(), and decode_video().

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 39 of file buffer.c.

Referenced by color_request_frame(), default_start_frame(), end_frame(), ff_default_filter_samples(), ff_null_start_frame_keep_ref(), filter_samples(), request_frame(), source_request_frame(), 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

Definition at line 141 of file buffer.c.

Referenced by alloc_picture(), av_buffersink_read_samples(), av_buffersrc_add_frame(), av_buffersrc_add_ref(), avfilter_end_frame(), avfilter_unref_bufferp(), color_request_frame(), common_uninit(), default_end_frame(), end_frame(), ff_default_filter_samples(), ff_filter_samples(), filter_samples(), flush_fifo(), lavfi_read_packet(), main(), movie_common_uninit(), output_frame(), poll_filters(), queue_picture(), request_frame(), start_frame(), stream_close(), 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 160 of file buffer.c.

Referenced by end_frame(), and uninit().

void ff_avfilter_default_free_buffer

(

AVFilterBuffer *

ptr

)

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

Definition at line 31 of file buffer.c.

Referenced by avfilter_get_audio_buffer_ref_from_arrays(), and avfilter_get_video_buffer_ref_from_arrays().

void ff_free_pool

(

AVFilterPool *

pool

)

Definition at line 79 of file buffer.c.

Referenced by avfilter_link_free(), and store_in_pool().

static void store_in_pool

(

AVFilterBufferRef *

ref

)

[static]

Definition at line 108 of file buffer.c.

Referenced by avfilter_unref_buffer().