mlt_audio.h File Reference

Audio class. More...

#include "mlt_types.h"

Go to the source code of this file.

Data Structures
struct	mlt_audio_s
	Audio class. More...

Functions
void	mlt_audio_alloc_data (mlt_audio self)
int	mlt_audio_calculate_frame_samples (float fps, int frequency, int64_t position)
int64_t	mlt_audio_calculate_samples_to_position (float fps, int frequency, int64_t position)
int	mlt_audio_calculate_size (mlt_audio self)
int	mlt_audio_channel_layout_channels (mlt_channel_layout layout)
mlt_channel_layout	mlt_audio_channel_layout_default (int channels)
mlt_channel_layout	mlt_audio_channel_layout_id (const char *name)
const char *	mlt_audio_channel_layout_name (mlt_channel_layout layout)
	Get the short name for a channel layout. More...
void	mlt_audio_close (mlt_audio self)
void	mlt_audio_copy (mlt_audio dst, mlt_audio src, int samples, int src_start, int dst_start)
const char *	mlt_audio_format_name (mlt_audio_format format)
int	mlt_audio_format_size (mlt_audio_format format, int samples, int channels)
void	mlt_audio_free_data (mlt_audio self)
void	mlt_audio_get_planes (mlt_audio self, uint8_t **planes)
void	mlt_audio_get_values (mlt_audio self, void **data, int *frequency, mlt_audio_format *format, int *samples, int *channels)
mlt_audio	mlt_audio_new ()
	Allocate a new Audio object. More...
int	mlt_audio_plane_count (mlt_audio self)
int	mlt_audio_plane_size (mlt_audio self)
void	mlt_audio_reverse (mlt_audio self)
void	mlt_audio_set_values (mlt_audio self, void *data, int frequency, mlt_audio_format format, int samples, int channels)
void	mlt_audio_shrink (mlt_audio self, int samples)
void	mlt_audio_silence (mlt_audio self, int samples, int start)

Detailed Description

Audio class.

See also

mlt_audio_s

Copyright (C) 2020 Meltytech, LLC

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Function Documentation

mlt_audio_alloc_data()

void mlt_audio_alloc_data

(

mlt_audio

self

)

mlt_audio_calculate_frame_samples()

int mlt_audio_calculate_frame_samples	(	float	fps,
		int	frequency,
		int64_t	position
	)

mlt_audio_calculate_samples_to_position()

int64_t mlt_audio_calculate_samples_to_position	(	float	fps,
		int	frequency,
		int64_t	position
	)

mlt_audio_calculate_size()

int mlt_audio_calculate_size

(

mlt_audio

self

)

mlt_audio_channel_layout_channels()

int mlt_audio_channel_layout_channels

(

mlt_channel_layout

layout

)

mlt_audio_channel_layout_default()

mlt_channel_layout mlt_audio_channel_layout_default

(

int

channels

)

mlt_audio_channel_layout_id()

mlt_channel_layout mlt_audio_channel_layout_id

(

const char *

name

)

mlt_audio_channel_layout_name()

const char* mlt_audio_channel_layout_name

(

mlt_channel_layout

layout

)

Get the short name for a channel layout.

You do not need to deallocate the returned string. \member of mlt_frame_s

Parameters

layout

the channel layout

Returns

a string for the name of the channel layout

mlt_audio_close()

void mlt_audio_close

(

mlt_audio

self

)

mlt_audio_copy()

void mlt_audio_copy	(	mlt_audio	dst,
		mlt_audio	src,
		int	samples,
		int	src_start,
		int	dst_start
	)

mlt_audio_format_name()

const char* mlt_audio_format_name

(

mlt_audio_format

format

)

mlt_audio_format_size()

int mlt_audio_format_size	(	mlt_audio_format	format,
		int	samples,
		int	channels
	)

mlt_audio_free_data()

void mlt_audio_free_data

(

mlt_audio

self

)

mlt_audio_get_planes()

void mlt_audio_get_planes	(	mlt_audio	self,
		uint8_t **	planes
	)

mlt_audio_get_values()

void mlt_audio_get_values	(	mlt_audio	self,
		void **	data,
		int *	frequency,
		mlt_audio_format *	format,
		int *	samples,
		int *	channels
	)

mlt_audio_new()

mlt_audio mlt_audio_new

(

)

Allocate a new Audio object.

Returns

a new audio object with default values set

mlt_audio_plane_count()

int mlt_audio_plane_count

(

mlt_audio

self

)

mlt_audio_plane_size()

int mlt_audio_plane_size

(

mlt_audio

self

)

mlt_audio_reverse()

void mlt_audio_reverse

(

mlt_audio

self

)

mlt_audio_set_values()

void mlt_audio_set_values	(	mlt_audio	self,
		void *	data,
		int	frequency,
		mlt_audio_format	format,
		int	samples,
		int	channels
	)

mlt_audio_shrink()

void mlt_audio_shrink	(	mlt_audio	self,
		int	samples
	)

mlt_audio_silence()

void mlt_audio_silence	(	mlt_audio	self,
		int	samples,
		int	start
	)