* audio_output.h : audio output thread interface
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
+ * $Id: audio_output.h,v 1.31 2001/03/21 13:42:33 sam Exp $
*
- * Authors:
- * Michel Kaempf <maxx@via.ecp.fr>
+ * Authors: Michel Kaempf <maxx@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* - Créer un flag destroy dans les fifos audio pour indiquer au thread audio
* qu'il peut libérer la mémoire occupée par le buffer de la fifo lorsqu'il
* le désire (fin du son ou fin du thread)
- * - Redéplacer les #define dans config.h
*
*/
-/*
- * Defines => "config.h"
- */
-
-/* Default output device. You probably should not change this. */
-#define AOUT_DEFAULT_DEVICE "/dev/dsp"
-
-/* Default audio output format (AOUT_FMT_S16_NE = Native Endianess) */
-#define AOUT_DEFAULT_FORMAT AOUT_FMT_S16_NE
-
-/* #define AOUT_DEFAULT_FORMAT AOUT_FMT_S8 */
-/* #define AOUT_DEFAULT_FORMAT AOUT_FMT_U8 */
-/* #define AOUT_DEFAULT_FORMAT AOUT_FMT_S16_BE */
-/* #define AOUT_DEFAULT_FORMAT AOUT_FMT_S16_LE */
-/* #define AOUT_DEFAULT_FORMAT AOUT_FMT_U16_BE */
-/* #define AOUT_DEFAULT_FORMAT AOUT_FMT_U16_LE */
-
-
-/* Default stereo mode (0 stands for mono, 1 for stereo) */
-#define AOUT_DEFAULT_STEREO 1
-/* #define AOUT_DEFAULT_STEREO 0 */
-
-/* Audio output rate, in Hz */
-#define AOUT_MIN_RATE 22050 /* XXX?? */
-#define AOUT_DEFAULT_RATE 44100
-#define AOUT_MAX_RATE 48000
-
-
-/* Volume (default 256) */
-#define VOL 256
-#define VOLSTEP 5
-#define VOLMAX 765
-
-/* Number of audio output frames contained in an audio output fifo.
- * (AOUT_FIFO_SIZE + 1) must be a power of 2, in order to optimise the
- * %(AOUT_FIFO_SIZE + 1) operation with an &AOUT_FIFO_SIZE.
- * With 511 we have at least 511*384/2/48000=2 seconds of sound */
-#define AOUT_FIFO_SIZE 511
-
-/* Maximum number of audio fifos. The value of AOUT_MAX_FIFOS should be a power
- * of two, in order to optimize the '/AOUT_MAX_FIFOS' and '*AOUT_MAX_FIFOS'
- * operations with '>>' and '<<' (gcc changes this at compilation-time) */
-#define AOUT_MAX_FIFOS 2
-
-/* Duration (in microseconds) of an audio output buffer should be :
- * - short, in order to be able to play a new song very quickly (especially a
- * song from the interface)
- * - long, in order to perform the buffer calculations as few as possible */
-#define AOUT_BUFFER_DURATION 100000
-
/*
* Macros
*/
* order to avoid rounding problems and heavy computations, as the function
* that handles this structure only uses additions.
*****************************************************************************/
-typedef struct
+typedef struct aout_increment_s
{
/* The remainder is used to keep track of the fractional part of the
* index. */
/*****************************************************************************
* aout_fifo_t
*****************************************************************************/
-typedef struct
+typedef struct aout_fifo_s
{
/* See the fifo types below */
int i_type;
boolean_t b_die;
+ int i_fifo; /* Just to keep track of the fifo index */
int i_channels;
boolean_t b_stereo;
/*****************************************************************************
* aout_thread_t : audio output thread descriptor
*****************************************************************************/
-typedef int (aout_sys_open_t) ( p_aout_thread_t p_aout );
-typedef int (aout_sys_reset_t) ( p_aout_thread_t p_aout );
-typedef int (aout_sys_setformat_t) ( p_aout_thread_t p_aout );
-typedef int (aout_sys_setchannels_t) ( p_aout_thread_t p_aout );
-typedef int (aout_sys_setrate_t) ( p_aout_thread_t p_aout );
-typedef long (aout_sys_getbufinfo_t) ( p_aout_thread_t p_aout,
- long l_buffer_limit );
-typedef void (aout_sys_playsamples_t) ( p_aout_thread_t p_aout,
- byte_t *buffer, int i_size );
-typedef void (aout_sys_close_t) ( p_aout_thread_t p_aout );
+typedef int (aout_open_t) ( p_aout_thread_t p_aout );
+typedef int (aout_setformat_t) ( p_aout_thread_t p_aout );
+typedef long (aout_getbufinfo_t) ( p_aout_thread_t p_aout,
+ long l_buffer_limit );
+typedef void (aout_play_t) ( p_aout_thread_t p_aout,
+ byte_t *buffer, int i_size );
+typedef void (aout_close_t) ( p_aout_thread_t p_aout );
typedef struct aout_thread_s
{
vlc_mutex_t fifos_lock;
aout_fifo_t fifo[ AOUT_MAX_FIFOS ];
- /* Plugins */
- aout_sys_open_t * p_sys_open;
- aout_sys_reset_t * p_sys_reset;
- aout_sys_setformat_t * p_sys_setformat;
- aout_sys_setchannels_t * p_sys_setchannels;
- aout_sys_setrate_t * p_sys_setrate;
- aout_sys_getbufinfo_t * p_sys_getbufinfo;
- aout_sys_playsamples_t * p_sys_playsamples;
- aout_sys_close_t * p_sys_close;
+ /* Plugin used and shortcuts to access its capabilities */
+ struct module_s * p_module;
+ aout_open_t * pf_open;
+ aout_setformat_t * pf_setformat;
+ aout_getbufinfo_t * pf_getbufinfo;
+ aout_play_t * pf_play;
+ aout_close_t * pf_close;
void * buffer;
/* The s32 buffer is used to mix all the audio fifos together before
#define AOUT_FMT_U16_LE 0x00000080 /* Little endian U16 */
#define AOUT_FMT_U16_BE 0x00000100 /* Big endian U16 */
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-#define AOUT_FMT_S16_NE AOUT_FMT_S16_LE
-#elif __BYTE_ORDER == __BIG_ENDIAN
+#ifdef WORDS_BIGENDIAN
#define AOUT_FMT_S16_NE AOUT_FMT_S16_BE
+#else
+#define AOUT_FMT_S16_NE AOUT_FMT_S16_LE
#endif
/*****************************************************************************
* Prototypes
*****************************************************************************/
aout_thread_t * aout_CreateThread ( int *pi_status );
-void aout_DestroyThread ( aout_thread_t *p_aout, int *pi_status );
+void aout_DestroyThread ( aout_thread_t *p_aout,
+ int *pi_status );
-
-aout_fifo_t * aout_CreateFifo ( aout_thread_t *p_aout, aout_fifo_t *p_fifo );
+aout_fifo_t * aout_CreateFifo ( aout_thread_t *p_aout,
+ aout_fifo_t *p_fifo );
void aout_DestroyFifo ( aout_fifo_t *p_fifo );
+void aout_FreeFifo ( aout_fifo_t *p_fifo );
+
projects / vlc / blobdiff