- /* See the fifo types below */
- int i_type;
- boolean_t b_die;
-
- int i_channels;
- boolean_t b_stereo;
- long l_rate;
-
- vlc_mutex_t data_lock;
- vlc_cond_t data_wait;
-
- long l_frame_size;
- void * buffer;
- mtime_t * date;
- /* The start frame is the first frame in the buffer that contains decoded
- * audio data. It it also the first frame in the current timestamped frame
- * area, ie the first dated frame in the decoded part of the buffer. :-p */
- long l_start_frame;
- boolean_t b_start_frame;
- /* The next frame is the end frame of the current timestamped frame area,
- * ie the first dated frame after the start frame. */
- long l_next_frame;
- boolean_t b_next_frame;
- /* The end frame is the first frame, after the start frame, that doesn't
- * contain decoded audio data. That's why the end frame is the first frame
- * where the audio decoder can store its decoded audio frames. */
- long l_end_frame;
-
- long l_unit;
- aout_increment_t unit_increment;
- /* The following variable is used to store the number of remaining audio
- * units in the current timestamped frame area. */
- long l_units;
-
-} aout_fifo_t;
-
-#define AOUT_EMPTY_FIFO 0
-#define AOUT_INTF_MONO_FIFO 1
-#define AOUT_INTF_STEREO_FIFO 2
-#define AOUT_ADEC_MONO_FIFO 3
-#define AOUT_ADEC_STEREO_FIFO 4
-
-/*****************************************************************************
- * 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 struct aout_thread_s
-{
- vlc_thread_t thread_id;
- boolean_t b_die;
- boolean_t b_active;
-
- vlc_mutex_t fifos_lock;
- aout_fifo_t fifo[ AOUT_MAX_FIFOS ];
-
- /* Plugins */
- plugin_id_t aout_plugin; /* video output plugin */
- 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;
-
- void * buffer;
- /* The s32 buffer is used to mix all the audio fifos together before
- * converting them and storing them in the audio output buffer */
- s32 * s32_buffer;
-
- /* The size of the audio output buffer is kept in audio units, as this is
- * the only unit that is common with every audio decoder and audio fifo */
- long l_units;
- long l_msleep;
-
- /* date is the moment where the first audio unit of the output buffer
- * will be played */
- mtime_t date;
-
- /* Path to the audio output device (default is set to "/dev/dsp") */
- char * psz_device;
- int i_fd;
-
- /* Format of the audio output samples */
- int i_format;
- /* Number of channels */
- int i_channels;
- /* Mono or Stereo sound */
- boolean_t b_stereo;
- /* Rate and gain of the audio output sound (in Hz) */
- long l_rate;
- long l_gain;
-
- /* there might be some useful private structure, such as audio_buf_info
- * for the OSS output */
- p_aout_sys_t p_sys;
-
-
- /* there is the current volume */
- int vol;
-
-} aout_thread_t;
-
-/* Those are from <linux/soundcard.h> but are needed because of formats
- * on other platforms */
-#define AOUT_FMT_U8 0x00000008
-#define AOUT_FMT_S16_LE 0x00000010 /* Little endian signed 16 */
-#define AOUT_FMT_S16_BE 0x00000020 /* Big endian signed 16 */
-#define AOUT_FMT_S8 0x00000040
-#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
-#define AOUT_FMT_S16_NE AOUT_FMT_S16_BE
-#endif