1 /***************************************************************************
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
10 * Copyright (C) 2005 by Linus Nielsen Feltzing
12 * All files in this archive are subject to the GNU General Public License.
13 * See the file COPYING in the source tree root for full license agreement.
15 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
16 * KIND, either express or implied.
18 ****************************************************************************/
23 #include <sys/types.h>
24 /* These must always be included with audio.h for this to compile under
25 cetain conditions. Do it here or else spread the complication around to
27 #if CONFIG_CODEC == SWCODEC
28 #include "pcm_sampr.h"
31 #include "pcm_record.h"
34 #endif /* HAVE_RECORDING */
35 #endif /* CONFIG_CODEC == SWCODEC */
39 #define audio_play(x) sim_audio_play(x)
42 #define AUDIO_STATUS_PLAY 0x0001
43 #define AUDIO_STATUS_PAUSE 0x0002
44 #define AUDIO_STATUS_RECORD 0x0004
45 #define AUDIO_STATUS_PRERECORD 0x0008
46 #define AUDIO_STATUS_ERROR 0x0010
47 #define AUDIO_STATUS_WARNING 0x0020
49 #define AUDIOERR_DISK_FULL 1
51 #define AUDIO_GAIN_LINEIN 0
52 #define AUDIO_GAIN_MIC 1
59 int audiobuf_swapwrite
;
62 int last_dma_chunk_size
;
75 int low_watermark_level
;
76 int lowest_watermark_level
;
79 void audio_init(void);
80 void audio_play(long offset
);
81 void audio_stop(void);
82 void audio_pause(void);
83 void audio_resume(void);
84 void audio_next(void);
85 void audio_prev(void);
86 int audio_status(void);
87 void audio_ff_rewind(long newtime
);
88 void audio_flush_and_reload_tracks(void);
89 struct mp3entry
* audio_current_track(void);
90 struct mp3entry
* audio_next_track(void);
91 bool audio_has_changed_track(void);
92 void audio_get_debugdata(struct audio_debug
*dbgdata
);
93 #ifndef HAVE_FLASH_STORAGE
94 void audio_set_buffer_margin(int seconds
);
96 unsigned int audio_error(void);
97 void audio_error_clear(void);
98 int audio_get_file_pos(void);
99 void audio_beep(int duration
);
100 void audio_init_playback(void);
102 /* Required call when audio buffer is required for some other purpose */
103 unsigned char *audio_get_buffer(bool talk_buf
, size_t *buffer_size
);
104 /* only implemented in playback.c, but called from firmware */
107 enum rec_channel_modes
109 __CHN_MODE_START_INDEX
= -1,
117 #if CONFIG_CODEC == SWCODEC
118 /* channel mode capability bits */
119 #define CHN_CAP_STEREO (1 << CHN_MODE_STEREO)
120 #define CHN_CAP_MONO (1 << CHN_MODE_MONO)
121 #define CHN_CAP_ALL (CHN_CAP_STEREO | CHN_CAP_MONO)
122 #endif /* CONFIG_CODEC == SWCODEC */
124 /* the enums below must match prestr[] in recording.c */
127 AUDIO_SRC_PLAYBACK
= -1, /* Virtual source */
128 HAVE_MIC_IN_(AUDIO_SRC_MIC
,)
129 HAVE_LINE_IN_(AUDIO_SRC_LINEIN
,)
130 HAVE_SPDIF_IN_(AUDIO_SRC_SPDIF
,)
131 HAVE_FMRADIO_IN_(AUDIO_SRC_FMRADIO
,)
133 AUDIO_SRC_MAX
= AUDIO_NUM_SOURCES
-1,
134 AUDIO_SRC_DEFAULT
= AUDIO_SRC_PLAYBACK
137 extern int audio_channels
;
138 extern int audio_output_source
;
140 #ifdef HAVE_RECORDING
141 /* Recordable source implies it has the input as well */
143 /* For now there's no restrictions on any targets with which inputs
144 are recordable so define them as equivalent - if they do differ,
145 special handling is needed right now. */
148 __REC_SRC_FIRST
= -1,
149 HAVE_MIC_REC_(REC_SRC_MIC
,)
150 HAVE_LINE_REC_(REC_SRC_LINEIN
,)
151 HAVE_SPDIF_REC_(REC_SRC_SPDIF
,)
152 HAVE_FMRADIO_REC_(REC_SRC_FMRADIO
,)
155 #endif /* HAVE_RECORDING */
157 #if CONFIG_CODEC == SWCODEC
158 /* selects a source to monitor for recording or playback */
159 #define SRCF_PLAYBACK 0x0000 /* default */
160 #define SRCF_RECORDING 0x1000
162 /* for AUDIO_SRC_FMRADIO */
163 #define SRCF_FMRADIO_PLAYING 0x0000 /* default */
164 #define SRCF_FMRADIO_PAUSED 0x2000
168 #ifdef HAVE_RECORDING
169 /* parameters for audio_set_recording_options */
170 struct audio_recording_options
175 int rec_prerecord_time
;
176 #if CONFIG_CODEC == SWCODEC
177 int rec_source_flags
; /* for rec_set_source */
178 struct encoder_config enc_config
;
185 /* audio recording functions */
186 void audio_init_recording(unsigned int buffer_offset
);
187 void audio_close_recording(void);
188 void audio_record(const char *filename
);
189 void audio_stop_recording(void);
190 void audio_pause_recording(void);
191 void audio_resume_recording(void);
192 void audio_new_file(const char *filename
);
193 void audio_set_recording_options(struct audio_recording_options
*options
);
194 void audio_set_recording_gain(int left
, int right
, int type
);
195 unsigned long audio_recorded_time(void);
196 unsigned long audio_num_recorded_bytes(void);
198 #if CONFIG_CODEC == SWCODEC
199 /* SWCODEC recording functions */
201 bool audio_load_encoder(int afmt
);
202 void audio_remove_encoder(void);
203 unsigned char *audio_get_recording_buffer(size_t *buffer_size
);
204 #endif /* CONFIG_CODEC == SWCODEC */
206 #endif /* HAVE_RECORDING */
208 #if CONFIG_CODEC == SWCODEC
209 /* SWCODEC misc. audio functions */
210 #if INPUT_SRC_CAPS != 0
212 void audio_set_input_source(int source
, unsigned flags
);
213 /* audio_input_mux: target-specific implementation used by audio_set_source
214 to set hardware inputs and audio paths */
215 void audio_input_mux(int source
, unsigned flags
);
216 void audio_set_output_source(int source
);
217 #endif /* INPUT_SRC_CAPS */
218 #endif /* CONFIG_CODEC == SWCODEC */
221 /* returns index into rec_master_sampr_list */
222 int audio_get_spdif_sample_rate(void);
223 /* > 0: monitor EBUin, 0: Monitor IISrecv, <0: reset only */
224 void audio_spdif_set_monitor(int monitor_spdif
);
225 #endif /* HAVE_SPDIF_IN */
227 unsigned long audio_prev_elapsed(void);
230 /***********************************************************************/
231 /* audio event handling */
233 /* subscribe to one or more audio event(s) by OR'ing together the desired */
234 /* event IDs (defined below); a handler is called with a solitary event ID */
235 /* (so switch() is okay) and possibly some useful data (depending on the */
236 /* event); a handler must return one of the return codes defined below */
238 typedef int (*AUDIO_EVENT_HANDLER
)(unsigned short event
, unsigned long data
);
240 void audio_register_event_handler(AUDIO_EVENT_HANDLER handler
, unsigned short mask
);
242 /***********************************************************************/
243 /* handler return codes */
245 #define AUDIO_EVENT_RC_IGNORED 200
246 /* indicates that no action was taken or the event was not recognized */
248 #define AUDIO_EVENT_RC_HANDLED 201
249 /* indicates that the event was handled and some action was taken which renders
250 the original event invalid; USE WITH CARE!; this return code aborts all further
251 processing of the given event */
253 /***********************************************************************/
254 /* audio event IDs */
256 #define AUDIO_EVENT_POS_REPORT (1<<0)
257 /* sends a periodic song position report to handlers; a report is sent on
258 each kernal tick; the number of ticks per second is defined by HZ; on each
259 report the current song position is passed in 'data'; if a handler takes an
260 action that changes the song or the song position it must return
261 AUDIO_EVENT_RC_HANDLED which suppresses the event for any remaining handlers */
263 #define AUDIO_EVENT_END_OF_TRACK (1<<1)
264 /* generated when the end of the currently playing track is reached; no
265 data is passed; if the handler implements some alternate end-of-track
266 processing it should return AUDIO_EVENT_RC_HANDLED which suppresses the
267 event for any remaining handlers as well as the normal end-of-track