vlc_aout.h File Reference

( ((p_format)->i_format == VLC_CODEC_SPDIFL)       \
       || ((p_format)->i_format == VLC_CODEC_SPDIFB)   \
       || ((p_format)->i_format == VLC_CODEC_A52)       \
       || ((p_format)->i_format == VLC_CODEC_DTS) )

Referenced by aout_InputNew(), aout_OutputNew(), Create(), MixBuffer(), Open(), and Probe().

#define AOUT_FMTS_IDENTICAL	(	p_first,
		p_second		)

Value:

(                          \
    ((p_first)->i_format == (p_second)->i_format)                           \
      && ((p_first)->i_rate == (p_second)->i_rate)                          \
      && ((p_first)->i_physical_channels == (p_second)->i_physical_channels)\
      && ((p_first)->i_original_channels == (p_second)->i_original_channels) )

Referenced by aout_FiltersCreatePipeline(), and aout_InputNew().

#define AOUT_FMTS_SIMILAR	(	p_first,
		p_second		)

Value:

(                            \
    ((p_first)->i_rate == (p_second)->i_rate)                               \
      && ((p_first)->i_physical_channels == (p_second)->i_physical_channels)\
      && ((p_first)->i_original_channels == (p_second)->i_original_channels) )

Referenced by Create_F32ToFL32(), Create_F32ToS16(), Create_S16ToF32(), Create_U8ToF32(), and Open().

#define AOUT_MAX_INPUT_RATE (4)

Referenced by aout_DecPlay(), aout_FiltersHintBuffers(), and DecoderPlayAudio().

#define AOUT_RESAMPLING_DOWN 2

Referenced by aout_InputPlay().

#define AOUT_RESAMPLING_NONE 0

Referenced by aout_InputNew(), aout_InputPlay(), and inputResamplingStop().

#define AOUT_RESAMPLING_UP 1

Referenced by aout_InputPlay().

#define AOUT_SPDIF_SIZE 6144

Referenced by DoWork(), Open(), OpenAudio(), and OpenSPDIF().

#define aout_ToggleMute	(	a,
		b		)	__aout_ToggleMute(VLC_OBJECT(a), b)

Referenced by CmdMute::execute(), libvlc_audio_set_mute(), libvlc_audio_toggle_mute(), InterfaceWindow::MessageReceived(), PutAction(), RunIntf(), ActionsManager::toggleMuteAudio(), and Volume().

#define AOUT_VAR_2F2R 4

Referenced by Open(), and Probe().

#define AOUT_VAR_3F2R 5

#define AOUT_VAR_5_1 6

Referenced by Open(), and Probe().

#define AOUT_VAR_6_1 7

#define AOUT_VAR_7_1 8

#define AOUT_VAR_CHAN_DOLBYS 5

Referenced by aout_OutputNew().

#define AOUT_VAR_CHAN_LEFT 3

Referenced by aout_OutputNew().

#define AOUT_VAR_CHAN_RIGHT 4

Referenced by aout_OutputNew().

#define AOUT_VAR_CHAN_RSTEREO 2

Referenced by aout_OutputNew().

#define AOUT_VAR_CHAN_STEREO 1

Referenced by aout_OutputNew().

#define AOUT_VAR_MONO 1

Referenced by Open(), and Probe().

#define AOUT_VAR_SPDIF 10

Referenced by Open(), and Probe().

#define AOUT_VAR_STEREO 2

Referenced by Open(), and Probe().

#define aout_VolumeDown	(	a,
		b,
		c	)	__aout_VolumeDown(VLC_OBJECT(a), b, c)

Referenced by ActionsManager::AudioDown(), CmdVolumeDown::execute(), HandleKey(), PutAction(), RunIntf(), vlclua_volume_down(), and VolumeMove().

#define aout_VolumeGet	(	a,
		b		)	__aout_VolumeGet(VLC_OBJECT(a), b)

Referenced by __str_format_meta(), EvaluateRPN(), libvlc_audio_get_volume(), MacroDo(), VLCMain::manageVolumeSlider, VlcProc::on_volume_changed(), ParseExecute(), MediaControlView::Pulse(), Redraw(), InterfaceWindow::UpdateInterface(), SoundWidget::updateVolume(), vlclua_volume_get(), Volume::Volume(), Volume(), VolumeGet(), and Interface::VolumeUpdate().

#define aout_VolumeSet	(	a,
		b		)	__aout_VolumeSet(VLC_OBJECT(a), b)

Referenced by __aout_ToggleMute(), EvaluateRPN(), libvlc_audio_set_volume(), MacroDo(), InterfaceWindow::MessageReceived(), Volume::set(), SoundWidget::updateVolume(), vlclua_volume_set(), Volume(), Interface::VolumeChange(), VolumeSet(), and VLCControls::volumeSliderUpdated:.

#define aout_VolumeUp	(	a,
		b,
		c	)	__aout_VolumeUp(VLC_OBJECT(a), b, c)

Referenced by ActionsManager::AudioUp(), CmdVolumeUp::execute(), HandleKey(), PutAction(), RunIntf(), vlclua_volume_up(), and VolumeMove().

#define FIXED32_FRACBITS 28

#define FIXED32_MAX ((vlc_fixed_t) +0x7fffffffL)

#define FIXED32_MIN ((vlc_fixed_t) -0x80000000L)

#define FIXED32_ONE ((vlc_fixed_t) 0x10000000)

Referenced by Do_F32ToFL32(), Do_FL32ToF32(), Do_S16ToF32(), Do_U8ToF32(), and DoWork().

#define VLC_AOUT_H 1

#define VLC_CODEC_SPDIFB VLC_FOURCC('s','p','d','b')

Referenced by Create(), DoWork(), and OpenSPDIF().

#define VLC_CODEC_SPDIFL VLC_FOURCC('s','p','d','i')

Referenced by ALSAFill(), Create(), CreateDSBuffer(), DoWork(), Open(), OpenAudio(), OpenSPDIF(), OpenWaveOut(), OSSThread(), and QNXaoutThread().

Typedef Documentation

typedef struct aout_filter_owner_sys_t aout_filter_owner_sys_t

audio output filter

typedef struct aout_filter_sys_t aout_filter_sys_t

typedef int32_t vlc_fixed_t

Function Documentation

int __aout_ToggleMute	(	vlc_object_t *	,
		audio_volume_t *
	)

References AOUT_VOLUME_MIN, aout_VolumeSet, config_GetInt, vlc_object_t::p_libvlc, var_Create, var_GetInteger, var_SetInteger, and VLC_VAR_INTEGER.

int __aout_VolumeDown	(	vlc_object_t *	,
		int	,
		audio_volume_t *
	)

References __aout_VolumeUp().

int __aout_VolumeGet	(	vlc_object_t *	,
		audio_volume_t *
	)

References aout_lock_mixer(), aout_unlock_mixer(), config_GetInt, FIND_ANYWHERE, aout_instance_t::output, aout_instance_t::p_mixer, aout_output_t::pf_volume_get, VLC_OBJECT_AOUT, vlc_object_find, and vlc_object_release.

int __aout_VolumeSet	(	vlc_object_t *	,
		audio_volume_t
	)

References aout_lock_input_fifos(), aout_lock_mixer(), aout_unlock_input_fifos(), aout_unlock_mixer(), config_PutInt, FIND_ANYWHERE, aout_instance_t::output, vlc_object_t::p_libvlc, aout_instance_t::p_mixer, aout_output_t::pf_volume_set, var_Create, var_SetBool, var_SetInteger, VLC_OBJECT_AOUT, vlc_object_find, vlc_object_release, VLC_SUCCESS, and VLC_VAR_INTEGER.

Referenced by __aout_VolumeUp().

int __aout_VolumeUp	(	vlc_object_t *	,
		int	,
		audio_volume_t *
	)

References __aout_VolumeSet(), AOUT_VOLUME_MAX, AOUT_VOLUME_MIN, config_GetInt, and vlc_object_t::p_libvlc.

Referenced by __aout_VolumeDown().

unsigned int aout_BitsPerSample ( vlc_fourcc_t i_format )

References VLC_CODEC_FI32, VLC_CODEC_FL32, VLC_CODEC_FL64, VLC_CODEC_S16B, VLC_CODEC_S16L, VLC_CODEC_S24B, VLC_CODEC_S24L, VLC_CODEC_S32B, VLC_CODEC_S32L, VLC_CODEC_S8, VLC_CODEC_U16B, VLC_CODEC_U16L, VLC_CODEC_U24B, VLC_CODEC_U24L, and VLC_CODEC_U8.

Referenced by aout_FormatPrepare(), EsOutUpdateInfo(), Open(), OpenFilter(), and transcode_audio_new().

void aout_ChannelExtract	(	void *	p_dst,
		int	i_dst_channels,
		const void *	p_src,
		int	i_src_channels,
		int	i_sample_count,
		const int *	pi_selection,
		int	i_bits_per_sample
	)

Do the actual channels extraction using the parameters created by aout_CheckChannelExtraction.

XXX this function does not work in place (p_dst and p_src must not overlap). XXX Only 8, 16, 24, 32, 64 bits per sample are supported.

References ExtractChannel().

Referenced by SplitBuffer().

void aout_ChannelReorder	(	uint8_t *	,
		int	,
		int	,
		const int *	,
		int
	)

References AOUT_CHAN_MAX, and i.

Referenced by Demux(), FillBuffer(), Mux(), and paCallback().

int aout_ChannelsRestart	(	vlc_object_t *	,
		const char *	,
		vlc_value_t	,
		vlc_value_t	,
		void *
	)

References aout_Restart(), and var_Destroy.

Referenced by aout_OutputNew(), AudioDeviceCallback(), Open(), and Probe().

bool aout_CheckChannelExtraction	(	int *	pi_selection,
		uint32_t *	pi_layout,
		int *	pi_channels,
		const uint32_t	pi_order_dst[9],
		const uint32_t *	pi_order_src,
		int	i_channels
	)

This fonction will compute the extraction parameter into pi_selection to go from i_channels with their type given by pi_order_src[] into the order describe by pi_order_dst.

It will also set :

*pi_channels as the number of channels that will be extracted which is lower (in case of non understood channels type) or equal to i_channels.
the layout of the channels (*pi_layout).

It will return true if channel extraction is really needed, in which case aout_ChannelExtract must be used

XXX It must be used when the source may have channel type not understood by VLC. In this case the channel type pi_order_src[] must be set to 0. XXX It must also be used if multiple channels have the same type.

References AOUT_CHAN_CENTER, AOUT_CHAN_DUALMONO, AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT, i, pi_index, and pi_vlc_chan_order_wg4.

Referenced by SetupOutputFormat().

int aout_CheckChannelReorder	(	const uint32_t *	pi_chan_order_in,
		const uint32_t *	pi_chan_order_out,
		uint32_t	i_channel_mask,
		int	i_channels,
		int *	pi_chan_table
	)

This function computes the reordering needed to go from pi_chan_order_in to pi_chan_order_out.

If pi_chan_order_in or pi_chan_order_out is NULL, it will assume that vlc internal (WG4) order is requested.

References AOUT_CHAN_MAX, i, and pi_vlc_chan_order_wg4.

Referenced by AddStream(), ConfigureChannelOrder(), CreateDSBuffer(), Open(), and OpenWaveOut().

void aout_EnableFilter	(	vlc_object_t *	p_this,
		const char *	psz_name,
		bool	b_add
	)

Enable or disable an audio filter.

Parameters:

	p_this	a vlc object
	psz_name	name of the filter
	b_add	are we adding or removing the filter ?

References AoutChangeFilterString(), AoutInputsMarkToRestart(), FIND_ANYWHERE, VLC_OBJECT_AOUT, vlc_object_find, and vlc_object_release.

mtime_t aout_FifoFirstDate	(	aout_instance_t *	,
		aout_fifo_t *
	)

References AOUT_ASSERT_FIFO_LOCKED, block_t::i_pts, and aout_fifo_t::p_first.

Referenced by Play().

aout_buffer_t* aout_FifoPop	(	aout_instance_t *	p_aout,
		aout_fifo_t *	p_fifo
	)

References AOUT_ASSERT_FIFO_LOCKED, aout_fifo_t::p_first, block_t::p_next, and aout_fifo_t::pp_last.

Referenced by DoWork(), MixBuffer(), Play(), Process(), SDLCallback(), and Thread().

vout_thread_t* aout_filter_RequestVout	(	filter_t *	,
		vout_thread_t *	p_vout,
		video_format_t *	p_fmt
	)

References aout_input_t::b_recycle_vout, filter_owner_sys_t::p_input, filter_t::p_owner, aout_request_vout_t::p_private, aout_request_vout_t::pf_request_vout, and aout_input_t::request_vout.

int aout_FindAndRestart	(	vlc_object_t *	,
		const char *	,
		vlc_value_t	,
		vlc_value_t	,
		void *
	)

References aout_Restart(), FIND_ANYWHERE, var_Destroy, VLC_OBJECT_AOUT, vlc_object_find, vlc_object_release, and VLC_SUCCESS.

unsigned int aout_FormatNbChannels ( const audio_sample_format_t * p_format )

void aout_FormatPrepare ( audio_sample_format_t * p_format )

References aout_BitsPerSample(), aout_FormatNbChannels(), audio_format_t::i_bitspersample, audio_format_t::i_bytes_per_frame, audio_format_t::i_format, and audio_format_t::i_frame_length.

Referenced by aout_InputNew(), aout_OutputNew(), DecNew(), Open(), OpenAnalog(), OpenSPDIF(), and SplitConversion().

void aout_FormatPrint	(	aout_instance_t *	p_aout,
		const char *	psz_text,
		const audio_sample_format_t *	p_format
	)

References aout_FormatPrintChannels(), audio_format_t::i_bytes_per_frame, audio_format_t::i_format, audio_format_t::i_frame_length, audio_format_t::i_rate, and msg_Dbg.

Referenced by aout_InputNew(), aout_OutputNew(), and Open().

const char* aout_FormatPrintChannels ( const audio_sample_format_t * )

aout_buffer_t* aout_OutputNextBuffer	(	aout_instance_t *	,
		mtime_t	,
		bool
	)

void aout_VolumeNoneInit ( aout_instance_t * )

References aout_VolumeNoneGet(), aout_VolumeNoneSet(), aout_instance_t::output, aout_output_t::pf_volume_get, and aout_output_t::pf_volume_set.

Referenced by Open(), and OpenSPDIF().

void aout_VolumeSoftInit ( aout_instance_t * )

References AOUT_VOLUME_DEFAULT, AOUT_VOLUME_MAX, AOUT_VOLUME_MIN, aout_VolumeSoftGet(), aout_VolumeSoftSet(), config_GetInt, aout_instance_t::output, aout_output_t::pf_volume_get, and aout_output_t::pf_volume_set.

Referenced by Open(), OpenAnalog(), and OpenAudio().

Variable Documentation

const uint32_t pi_vlc_chan_order_wg4[] [static]

Initial value:

{
     0x2 ,  0x4 ,
     0x100 ,  0x200 ,
     0x20 ,  0x40 ,  0x10 ,
     0x1 ,  0x1000 , 0
}

It describes the audio channel order VLC except.

Referenced by AobHeader(), aout_CheckChannelExtraction(), and aout_CheckChannelReorder().


Data Structures
struct	aout_alloc_t
	allocation of memory in the audio output More...
struct	aout_fifo_t
	audio output buffer FIFO More...
struct	aout_filter_t
struct	aout_output_t
	an output stream for the audio output More...
struct	aout_instance_t
	audio output thread descriptor More...
Defines
#define	VLC_AOUT_H 1
#define	AOUT_FMTS_IDENTICAL(p_first, p_second)
#define	AOUT_FMTS_SIMILAR(p_first, p_second)
#define	VLC_CODEC_SPDIFL VLC_FOURCC('s','p','d','i')
#define	VLC_CODEC_SPDIFB VLC_FOURCC('s','p','d','b')
#define	AOUT_FMT_NON_LINEAR(p_format)
#define	FIXED32_FRACBITS 28
#define	FIXED32_MIN ((vlc_fixed_t) -0x80000000L)
#define	FIXED32_MAX ((vlc_fixed_t) +0x7fffffffL)
#define	FIXED32_ONE ((vlc_fixed_t) 0x10000000)
#define	AOUT_CHAN_CENTER 0x1
#define	AOUT_CHAN_LEFT 0x2
#define	AOUT_CHAN_RIGHT 0x4
#define	AOUT_CHAN_REARCENTER 0x10
#define	AOUT_CHAN_REARLEFT 0x20
#define	AOUT_CHAN_REARRIGHT 0x40
#define	AOUT_CHAN_MIDDLELEFT 0x100
#define	AOUT_CHAN_MIDDLERIGHT 0x200
#define	AOUT_CHAN_LFE 0x1000
#define	AOUT_CHAN_DOLBYSTEREO 0x10000
#define	AOUT_CHAN_DUALMONO 0x20000
#define	AOUT_CHAN_REVERSESTEREO 0x40000
#define	AOUT_CHAN_PHYSMASK 0xFFFF
#define	AOUT_CHAN_MAX 9
#define	AOUT_VAR_MONO 1
#define	AOUT_VAR_STEREO 2
#define	AOUT_VAR_2F2R 4
#define	AOUT_VAR_3F2R 5
#define	AOUT_VAR_5_1 6
#define	AOUT_VAR_6_1 7
#define	AOUT_VAR_7_1 8
#define	AOUT_VAR_SPDIF 10
#define	AOUT_VAR_CHAN_STEREO 1
#define	AOUT_VAR_CHAN_RSTEREO 2
#define	AOUT_VAR_CHAN_LEFT 3
#define	AOUT_VAR_CHAN_RIGHT 4
#define	AOUT_VAR_CHAN_DOLBYS 5
#define	aout_BufferFree(buffer) block_Release( buffer )
#define	AOUT_SPDIF_SIZE 6144
#define	A52_FRAME_NB 1536
#define	AOUT_MAX_INPUT_RATE (4)
#define	AOUT_RESAMPLING_NONE 0
#define	AOUT_RESAMPLING_UP 1
#define	AOUT_RESAMPLING_DOWN 2
#define	aout_VolumeGet(a, b) __aout_VolumeGet(VLC_OBJECT(a), b)
#define	aout_VolumeSet(a, b) __aout_VolumeSet(VLC_OBJECT(a), b)
#define	aout_VolumeUp(a, b, c) __aout_VolumeUp(VLC_OBJECT(a), b, c)
#define	aout_VolumeDown(a, b, c) __aout_VolumeDown(VLC_OBJECT(a), b, c)
#define	aout_ToggleMute(a, b) __aout_ToggleMute(VLC_OBJECT(a), b)
#define	aout_EnableFilter(o, n, b) aout_EnableFilter( VLC_OBJECT(o), n, b )
Typedefs
typedef int32_t	vlc_fixed_t
typedef struct aout_filter_owner_sys_t	aout_filter_owner_sys_t
	audio output filter
typedef struct aout_filter_sys_t	aout_filter_sys_t
Functions
aout_buffer_t *	aout_OutputNextBuffer (aout_instance_t *, mtime_t, bool)
int	aout_CheckChannelReorder (const uint32_t pi_chan_order_in, const uint32_t pi_chan_order_out, uint32_t i_channel_mask, int i_channels, int *pi_chan_table)
	This function computes the reordering needed to go from pi_chan_order_in to pi_chan_order_out.
void	aout_ChannelReorder (uint8_t , int, int, const int , int)
bool	aout_CheckChannelExtraction (int pi_selection, uint32_t pi_layout, int pi_channels, const uint32_t pi_order_dst[9], const uint32_t pi_order_src, int i_channels)
	This fonction will compute the extraction parameter into pi_selection to go from i_channels with their type given by pi_order_src[] into the order describe by pi_order_dst.
void	aout_ChannelExtract (void p_dst, int i_dst_channels, const void p_src, int i_src_channels, int i_sample_count, const int *pi_selection, int i_bits_per_sample)
	Do the actual channels extraction using the parameters created by aout_CheckChannelExtraction.
unsigned int	aout_FormatNbChannels (const audio_sample_format_t *p_format)
unsigned int	aout_BitsPerSample (vlc_fourcc_t i_format)
void	aout_FormatPrepare (audio_sample_format_t *p_format)
void	aout_FormatPrint (aout_instance_t p_aout, const char psz_text, const audio_sample_format_t *p_format)
const char *	aout_FormatPrintChannels (const audio_sample_format_t *)
mtime_t	aout_FifoFirstDate (aout_instance_t , aout_fifo_t )
aout_buffer_t *	aout_FifoPop (aout_instance_t p_aout, aout_fifo_t p_fifo)
void	aout_VolumeSoftInit (aout_instance_t *)
void	aout_VolumeNoneInit (aout_instance_t *)
int	__aout_VolumeGet (vlc_object_t , audio_volume_t )
int	__aout_VolumeSet (vlc_object_t *, audio_volume_t)
int	__aout_VolumeUp (vlc_object_t , int, audio_volume_t )
int	__aout_VolumeDown (vlc_object_t , int, audio_volume_t )
int	__aout_ToggleMute (vlc_object_t , audio_volume_t )
int	aout_FindAndRestart (vlc_object_t , const char , vlc_value_t, vlc_value_t, void *)
int	aout_ChannelsRestart (vlc_object_t , const char , vlc_value_t, vlc_value_t, void *)
void	aout_EnableFilter (vlc_object_t , const char , bool)
	Enable or disable an audio filter.
vout_thread_t *	aout_filter_RequestVout (filter_t , vout_thread_t p_vout, video_format_t *p_fmt)
Variables
static const uint32_t	pi_vlc_chan_order_wg4 []
	It describes the audio channel order VLC except.