AVFilterBufferRef Struct Reference

A reference to an AVFilterBuffer. More...

#include <avfilter.h>

Data Fields

AVFilterBuffer * buf

the buffer that this is a reference to

uint8_t * data [8]

picture/audio data for each plane

int linesize [8]

number of bytes per line

int format

media format

int64_t pts

presentation timestamp.

int64_t pos

byte position in stream, -1 if unknown

int perms

permissions, see the AV_PERM_* flags

enum AVMediaType type

media type of buffer data

AVFilterBufferRefVideoProps * video

video buffer specific properties

AVFilterBufferRefAudioProps * audio

audio buffer specific properties

Detailed Description

A reference to an AVFilterBuffer.

Since filters can manipulate the origin of a buffer to, for example, crop image without any memcpy, the buffer origin and dimensions are per-reference properties. Linesize is also useful for image flipping, frame to field filters, etc, and so is also per-reference.

TODO: add anything necessary for frame reordering

Definition at line 134 of file avfilter.h.

Field Documentation

AVFilterBufferRefAudioProps* AVFilterBufferRef::audio

audio buffer specific properties

Definition at line 152 of file avfilter.h.

Referenced by av_asrc_buffer_add_audio_buffer_ref(), av_asrc_buffer_add_samples(), avfilter_copy_buffer_ref_props(), avfilter_default_filter_samples(), avfilter_filter_samples(), avfilter_get_audio_buffer_ref_from_arrays(), avfilter_ref_buffer(), avfilter_unref_buffer(), ff_dlog_ref(), filter_samples(), free_pool(), lavfi_read_packet(), log_input_change(), request_frame(), send_out(), store_in_pool(), and uninit().

AVFilterBuffer* AVFilterBufferRef::buf

the buffer that this is a reference to

Definition at line 135 of file avfilter.h.

Referenced by av_asrc_buffer_add_samples(), avfilter_default_get_video_buffer(), avfilter_get_audio_buffer_ref_from_arrays(), avfilter_get_video_buffer_ref_from_arrays(), avfilter_ref_buffer(), avfilter_unref_buffer(), does_clip(), ff_dlog_ref(), free_pool(), send_out(), start_frame(), store_in_pool(), transcode_video(), and vf_next_put_image().

uint8_t* AVFilterBufferRef::data[8]

picture/audio data for each plane

Definition at line 136 of file avfilter.h.

Referenced by av_vsrc_buffer_add_video_buffer_ref(), avfilter_default_get_video_buffer(), avfilter_draw_slice(), avfilter_fill_frame_from_video_buffer_ref(), avfilter_filter_samples(), avfilter_get_audio_buffer_ref_from_arrays(), avfilter_get_video_buffer_ref_from_arrays(), blend_slice(), color_request_frame(), display_picref(), does_clip(), draw_send_bar_slice(), draw_slice(), drawbox(), end_frame(), ff_dlog_ref(), fill_iplimage_from_picref(), fill_picref_from_iplimage(), fill_picture(), fill_picture_monoblack(), fill_picture_rgb(), filter(), filter_samples(), filter_samples_channel_mapping(), filter_samples_panning(), get_video_buffer(), init_buffers(), lavfi_read_packet(), request_frame(), scale_slice(), start_frame(), and vf_next_put_image().

int AVFilterBufferRef::format

media format

Definition at line 138 of file avfilter.h.

Referenced by av_asrc_buffer_add_audio_buffer_ref(), av_vsrc_buffer_add_video_buffer_ref(), avfilter_copy_frame_props(), avfilter_default_get_video_buffer(), avfilter_get_audio_buffer_ref_from_arrays(), avfilter_get_video_buffer_ref_from_arrays(), end_frame(), filter_samples(), lavfi_read_packet(), log_input_change(), start_frame(), and vf_next_put_image().

int AVFilterBufferRef::linesize[8]

int AVFilterBufferRef::perms

permissions, see the AV_PERM_* flags

Definition at line 148 of file avfilter.h.

Referenced by avfilter_default_get_video_buffer(), avfilter_filter_samples(), avfilter_get_audio_buffer_ref_from_arrays(), avfilter_get_video_buffer_ref_from_arrays(), avfilter_ref_buffer(), avfilter_start_frame(), end_frame(), ff_dlog_ref(), start_frame(), and vf_next_put_image().

int64_t AVFilterBufferRef::pos

byte position in stream, -1 if unknown

Definition at line 146 of file avfilter.h.

Referenced by avfilter_copy_buffer_ref_props(), avfilter_copy_frame_props(), avfilter_fill_frame_from_video_buffer_ref(), color_request_frame(), end_frame(), ff_dlog_ref(), filter_samples(), lavfi_read_packet(), request_frame(), select_frame(), source_request_frame(), start_frame(), and video_thread().

int64_t AVFilterBufferRef::pts

presentation timestamp.

The time unit may change during filtering, as it is specified in the link and the filter code may need to rescale the PTS accordingly.

Definition at line 145 of file avfilter.h.

Referenced by av_asrc_buffer_add_samples(), avfilter_copy_buffer_ref_props(), avfilter_copy_frame_props(), avfilter_default_filter_samples(), avfilter_filter_samples(), avfilter_start_frame(), color_request_frame(), display_picref(), draw_text(), end_frame(), ff_dlog_ref(), filter_samples(), lavfi_read_packet(), request_frame(), return_frame(), select_frame(), send_out(), source_request_frame(), start_frame(), start_frame_overlay(), transcode_video(), vf_next_put_image(), and video_thread().

enum AVMediaType AVFilterBufferRef::type

media type of buffer data

Definition at line 150 of file avfilter.h.

Referenced by avfilter_copy_buffer_ref_props(), avfilter_copy_frame_props(), avfilter_get_audio_buffer(), avfilter_get_audio_buffer_ref_from_arrays(), avfilter_get_video_buffer(), avfilter_get_video_buffer_ref_from_arrays(), avfilter_ref_buffer(), and vf_next_put_image().

The documentation for this struct was generated from the following file:

libavfilter/avfilter.h


Data Fields
AVFilterBuffer *	buf
	the buffer that this is a reference to
uint8_t *	data [8]
	picture/audio data for each plane
int	linesize [8]
	number of bytes per line
int	format
	media format
int64_t	pts
	presentation timestamp.
int64_t	pos
	byte position in stream, -1 if unknown
int	perms
	permissions, see the AV_PERM_* flags
enum AVMediaType	type
	media type of buffer data
AVFilterBufferRefVideoProps *	video
	video buffer specific properties
AVFilterBufferRefAudioProps *	audio
	audio buffer specific properties