alsa.c File Reference

Include dependency graph for alsa.c:

Data Structures
struct	aout_sys_t
Defines
#define	ALSA_PCM_NEW_HW_PARAMS_API
#define	ALSA_PCM_NEW_SW_PARAMS_API
#define	A52_FRAME_NB   1536
#define	ALSA_DEFAULT_PERIOD_SIZE   1024
#define	ALSA_DEFAULT_BUFFER_SIZE   ( ALSA_DEFAULT_PERIOD_SIZE << 8 )
#define	ALSA_SPDIF_PERIOD_SIZE   A52_FRAME_NB
#define	ALSA_SPDIF_BUFFER_SIZE   ( ALSA_SPDIF_PERIOD_SIZE << 4 )
#define	DEFAULT_ALSA_DEVICE   N_("default")
Functions
static int	Open (vlc_object_t *)
	Probes and initializes.
static void	Close (vlc_object_t *)
	Releases resources.
static void	Play (aout_instance_t *)
static void *	ALSAThread (void *)
static void	ALSAFill (aout_instance_t *)
static int	FindDevicesCallback (vlc_object_t *p_this, char const *psz_name, vlc_value_t newval, vlc_value_t oldval, void *p_unused)
static void	GetDevicesForCard (vlc_object_t *, module_config_t *, int card)
static void	GetDevices (vlc_object_t *, module_config_t *)
int	vlc_entry__main (module_t *p_module)
const char *	vlc_entry_license__main (void)
static void	Probe (aout_instance_t *p_aout, const char *psz_device, const char *psz_iec_device, int *pi_snd_pcm_format)
static void	PlayIgnore (aout_instance_t *p_aout)
static void	pcm_drop (void *pcm)
Variables
static const char *const	ppsz_devices [] = { "default" }
static const char *const	ppsz_devices_text [] = { N_("Default") }

---

Define Documentation

#define A52_FRAME_NB   1536

#define ALSA_DEFAULT_BUFFER_SIZE   ( ALSA_DEFAULT_PERIOD_SIZE << 8 )

#define ALSA_DEFAULT_PERIOD_SIZE   1024

#define ALSA_PCM_NEW_HW_PARAMS_API

#define ALSA_PCM_NEW_SW_PARAMS_API

#define ALSA_SPDIF_BUFFER_SIZE   ( ALSA_SPDIF_PERIOD_SIZE << 4 )

#define ALSA_SPDIF_PERIOD_SIZE   A52_FRAME_NB

#define DEFAULT_ALSA_DEVICE   N_("default")

---

Function Documentation

static void ALSAFill

(

aout_instance_t *

p_aout

)

[static]

References aout_OutputNextBuffer(), block_Release(), CLOCK_FREQ, audio_format_t::i_bytes_per_frame, audio_format_t::i_format, audio_format_t::i_frame_length, block_t::i_nb_samples, aout_sys_t::i_period_time, audio_format_t::i_rate, mdate(), msg_Dbg, msg_Err, msleep, aout_sys_t::next_date, aout_output_t::output, aout_instance_t::output, block_t::p_buffer, aout_sys_t::p_snd_pcm, aout_output_t::p_sys, poll, POLLOUT, pollfd::revents, VLC_CODEC_SPDIFL, vlc_restorecancel(), and vlc_savecancel().

Referenced by ALSAThread().

static void * ALSAThread

(

void *

data

)

[static]

References ALSAFill(), AOUT_PTS_TOLERANCE, mwait, aout_instance_t::output, aout_sys_t::p_snd_pcm, aout_output_t::p_sys, pcm_drop(), aout_sys_t::start_date, vlc_cleanup_pop, vlc_cleanup_push, vlc_sem_wait(), and aout_sys_t::wait.

static void Close

(

vlc_object_t *

p_this

)

[static]

Releases resources.

Close the module.

Destroys the X11 window.

Disconnect from the X server.

Close a SDL video output.

It destroys an OpenGL vout display.

Terminate a vout display created by Open.

It destroyes a Direct3D vout display.

Terminate an output method created by Open.

Release the drawable.

Close a libcaca video output.

Close a aa video output method.

Close the filter.

Terminate a splitter module.

This function closes a clone video splitter module.

Common close function.

Releases allocate resources.

Close: Destructor.

Parameters:

	p_this	pointer to this filter object
	p_this,:	the filter object

static int FindDevicesCallback	(	vlc_object_t *	p_this,
		char const *	psz_name,
		vlc_value_t	newval,
		vlc_value_t	oldval,
		void *	p_unused
	)			[static]

References module_config_t::b_dirty, config_FindConfig(), GetDevices(), module_config_t::i_list, p_item, module_config_t::ppsz_list, module_config_t::ppsz_list_text, and VLC_SUCCESS.

static void GetDevices	(	vlc_object_t *	obj,
		module_config_t *	p_item
	)			[static]

References GetDevicesForCard(), msg_Dbg, and msg_Err.

Referenced by FindDevicesCallback(), and Probe().

static void GetDevicesForCard	(	vlc_object_t *	obj,
		module_config_t *	p_item,
		int	card
	)			[static]

References _, asprintf(), module_config_t::i_list, msg_Dbg, msg_Err, module_config_t::ppsz_list, module_config_t::ppsz_list_text, and xrealloc().

Referenced by GetDevices().

static int Open

(

vlc_object_t *

p_this

)

[static]

Probes and initializes.

Basic chorus/flanger/delay audio filter This implements a variable delay filter for VLC.

Todo:

• Improve CDDB support (non-blocking, cache, .

Open the module.

Create an X11 window.

Probe the X server.

This function initializes SDL vout method.

It creates an OpenGL vout display.

This function allocates and initialize the DirectX vout display.

It creates a Direct3D vout display.

This function allocates and initializes a FB vout method.

Find the drawable set by libvlc application.

This function initializes libcaca vout method.

This function allocates and initializes a aa vout method.

This function allocates and initializes a Wall splitter module.

Open the filter.

This function allocates and initializes a Clone splitter module.

Open: initialize and create stuff.

Connect to the sftp server and ask for a file.

Parameters:

p_this,:

the vlc_object

Returns:

VLC_SUCCESS if everything was fine

Parameters:

	p_this
	p_this,:	the filter object

Returns:

VLC_SUCCESS or vlc error codes

Todo:

Reinstate meta codec name

static void pcm_drop

(

void *

pcm

)

[static]

Referenced by ALSAThread().

static void Play

(

aout_instance_t *

p_aout

)

[static]

References aout_FifoFirstDate(), aout_output_t::fifo, aout_instance_t::output, aout_output_t::p_sys, aout_output_t::pf_play, PlayIgnore(), aout_sys_t::start_date, and aout_sys_t::wait.

Referenced by handle_player(), OpenAudio(), and RollOverTcp().

static void PlayIgnore

(

aout_instance_t *

p_aout

)

[static]

Referenced by Play().

static void Probe	(	aout_instance_t *	p_aout,
		const char *	psz_device,
		const char *	psz_iec_device,
		int *	pi_snd_pcm_format
	)			[static]

References _, aout_ChannelsRestart(), aout_FormatNbChannels(), AOUT_VAR_2F2R, AOUT_VAR_5_1, AOUT_VAR_MONO, AOUT_VAR_SPDIF, AOUT_VAR_STEREO, dialog_Fatal, GetDevices(), aout_sys_t::i_channels, vlc_value_t::i_int, msg_Dbg, msg_Warn, N_, aout_sys_t::p_snd_pcm, p_sys, vlc_value_t::psz_string, text, var_AddCallback, var_Change, var_Create, var_Destroy, var_GetBool, var_InheritBool, var_Set, var_SetBool, VLC_OBJECT, VLC_VAR_ADDCHOICE, VLC_VAR_BOOL, VLC_VAR_CHOICESCOUNT, VLC_VAR_HASCHOICE, VLC_VAR_INTEGER, and VLC_VAR_SETTEXT.

int vlc_entry__main

(

module_t *

p_module

)

const char* vlc_entry_license__main

(

void

)

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Variable Documentation

const char* const ppsz_devices[] = { "default" } [static]

const char* const ppsz_devices_text[] = { N_("Default") } [static]