1 |
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/* |
2 |
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* audio_oss_esd.cpp - Audio support, implementation for OSS and ESD (Linux and FreeBSD) |
3 |
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* |
4 |
< |
* Basilisk II (C) 1997-1999 Christian Bauer |
4 |
> |
* Basilisk II (C) 1997-2001 Christian Bauer |
5 |
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* |
6 |
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* This program is free software; you can redistribute it and/or modify |
7 |
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* it under the terms of the GNU General Public License as published by |
41 |
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#include "audio.h" |
42 |
|
#include "audio_defs.h" |
43 |
|
|
44 |
< |
#if ENABLE_ESD |
44 |
> |
#ifdef ENABLE_ESD |
45 |
|
#include <esd.h> |
46 |
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#endif |
47 |
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|
49 |
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#include "debug.h" |
50 |
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|
51 |
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|
52 |
< |
// Supported sample rates, sizes and channels (defaults) |
53 |
< |
int audio_num_sample_rates = 1; |
54 |
< |
uint32 audio_sample_rates[] = {44100 << 16}; |
55 |
< |
int audio_num_sample_sizes = 1; |
56 |
< |
uint16 audio_sample_sizes[] = {16}; |
57 |
< |
int audio_num_channel_counts = 1; |
58 |
< |
uint16 audio_channel_counts[] = {2}; |
52 |
> |
// The currently selected audio parameters (indices in audio_sample_rates[] etc. vectors) |
53 |
> |
static int audio_sample_rate_index = 0; |
54 |
> |
static int audio_sample_size_index = 0; |
55 |
> |
static int audio_channel_count_index = 0; |
56 |
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|
57 |
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// Constants |
58 |
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#define DSP_NAME "/dev/dsp" |
81 |
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// Set AudioStatus to reflect current audio stream format |
82 |
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static void set_audio_status_format(void) |
83 |
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{ |
84 |
< |
AudioStatus.sample_rate = audio_sample_rates[0]; |
85 |
< |
AudioStatus.sample_size = audio_sample_sizes[0]; |
86 |
< |
AudioStatus.channels = audio_channel_counts[0]; |
84 |
> |
AudioStatus.sample_rate = audio_sample_rates[audio_sample_rate_index]; |
85 |
> |
AudioStatus.sample_size = audio_sample_sizes[audio_sample_size_index]; |
86 |
> |
AudioStatus.channels = audio_channel_counts[audio_channel_count_index]; |
87 |
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} |
88 |
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|
89 |
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// Init using /dev/dsp, returns false on error |
90 |
< |
bool audio_init_dsp(void) |
90 |
> |
static bool open_dsp(void) |
91 |
|
{ |
92 |
+ |
// Open /dev/dsp |
93 |
+ |
audio_fd = open(DSP_NAME, O_WRONLY); |
94 |
+ |
if (audio_fd < 0) { |
95 |
+ |
fprintf(stderr, "WARNING: Cannot open %s (%s)\n", DSP_NAME, strerror(errno)); |
96 |
+ |
return false; |
97 |
+ |
} |
98 |
+ |
|
99 |
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printf("Using " DSP_NAME " audio output\n"); |
100 |
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|
101 |
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// Get supported sample formats |
102 |
< |
unsigned long format; |
103 |
< |
ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &format); |
104 |
< |
if ((format & (AFMT_U8 | AFMT_S16_BE | AFMT_S16_LE)) == 0) { |
105 |
< |
WarningAlert(GetString(STR_AUDIO_FORMAT_WARN)); |
106 |
< |
close(audio_fd); |
107 |
< |
audio_fd = -1; |
108 |
< |
return false; |
109 |
< |
} |
110 |
< |
if (format & (AFMT_S16_BE | AFMT_S16_LE)) { |
111 |
< |
audio_sample_sizes[0] = 16; |
112 |
< |
silence_byte = 0; |
113 |
< |
} else { |
114 |
< |
audio_sample_sizes[0] = 8; |
115 |
< |
silence_byte = 0x80; |
102 |
> |
if (audio_sample_sizes.empty()) { |
103 |
> |
unsigned long format; |
104 |
> |
ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &format); |
105 |
> |
if (format & AFMT_U8) |
106 |
> |
audio_sample_sizes.push_back(8); |
107 |
> |
if (format & (AFMT_S16_BE | AFMT_S16_LE)) |
108 |
> |
audio_sample_sizes.push_back(16); |
109 |
> |
|
110 |
> |
int stereo = 0; |
111 |
> |
if (ioctl(audio_fd, SNDCTL_DSP_STEREO, &stereo) == 0 && stereo == 0) |
112 |
> |
audio_channel_counts.push_back(1); |
113 |
> |
stereo = 1; |
114 |
> |
if (ioctl(audio_fd, SNDCTL_DSP_STEREO, &stereo) == 0 && stereo == 1) |
115 |
> |
audio_channel_counts.push_back(2); |
116 |
> |
|
117 |
> |
if (audio_sample_sizes.empty() || audio_channel_counts.empty()) { |
118 |
> |
WarningAlert(GetString(STR_AUDIO_FORMAT_WARN)); |
119 |
> |
close(audio_fd); |
120 |
> |
audio_fd = -1; |
121 |
> |
return false; |
122 |
> |
} |
123 |
> |
|
124 |
> |
audio_sample_rates.push_back(11025 << 16); |
125 |
> |
audio_sample_rates.push_back(22050 << 16); |
126 |
> |
int rate = 44100; |
127 |
> |
ioctl(audio_fd, SNDCTL_DSP_SPEED, &rate); |
128 |
> |
if (rate > 22050) |
129 |
> |
audio_sample_rates.push_back(rate << 16); |
130 |
> |
|
131 |
> |
// Default to highest supported values |
132 |
> |
audio_sample_rate_index = audio_sample_rates.size() - 1; |
133 |
> |
audio_sample_size_index = audio_sample_sizes.size() - 1; |
134 |
> |
audio_channel_count_index = audio_channel_counts.size() - 1; |
135 |
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} |
113 |
– |
if (!(format & AFMT_S16_BE)) |
114 |
– |
little_endian = true; |
136 |
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|
137 |
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// Set DSP parameters |
138 |
< |
format = audio_sample_sizes[0] == 8 ? AFMT_U8 : (little_endian ? AFMT_S16_LE : AFMT_S16_BE); |
138 |
> |
unsigned long format; |
139 |
> |
if (audio_sample_sizes[audio_sample_size_index] == 8) { |
140 |
> |
format = AFMT_U8; |
141 |
> |
little_endian = false; |
142 |
> |
silence_byte = 0x80; |
143 |
> |
} else { |
144 |
> |
unsigned long sup_format; |
145 |
> |
ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &sup_format); |
146 |
> |
if (sup_format & AFMT_S16_BE) { |
147 |
> |
little_endian = false; |
148 |
> |
format = AFMT_S16_BE; |
149 |
> |
} else { |
150 |
> |
little_endian = true; |
151 |
> |
format = AFMT_S16_LE; |
152 |
> |
} |
153 |
> |
silence_byte = 0; |
154 |
> |
} |
155 |
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ioctl(audio_fd, SNDCTL_DSP_SETFMT, &format); |
156 |
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int frag = 0x0004000c; // Block size: 4096 frames |
157 |
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ioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
158 |
< |
int stereo = (audio_channel_counts[0] == 2); |
158 |
> |
int stereo = (audio_channel_counts[audio_channel_count_index] == 2); |
159 |
|
ioctl(audio_fd, SNDCTL_DSP_STEREO, &stereo); |
160 |
< |
int rate = audio_sample_rates[0] >> 16; |
160 |
> |
int rate = audio_sample_rates[audio_sample_rate_index] >> 16; |
161 |
|
ioctl(audio_fd, SNDCTL_DSP_SPEED, &rate); |
125 |
– |
audio_sample_rates[0] = rate << 16; |
126 |
– |
|
127 |
– |
// Set AudioStatus again because we now know more about the sound |
128 |
– |
// system's capabilities |
129 |
– |
set_audio_status_format(); |
162 |
|
|
163 |
|
// Get sound buffer size |
164 |
|
ioctl(audio_fd, SNDCTL_DSP_GETBLKSIZE, &audio_frames_per_block); |
165 |
|
D(bug("DSP_GETBLKSIZE %d\n", audio_frames_per_block)); |
134 |
– |
sound_buffer_size = (AudioStatus.sample_size >> 3) * AudioStatus.channels * audio_frames_per_block; |
166 |
|
return true; |
167 |
|
} |
168 |
|
|
169 |
|
// Init using ESD, returns false on error |
170 |
< |
bool audio_init_esd(void) |
170 |
> |
static bool open_esd(void) |
171 |
|
{ |
172 |
< |
#if ENABLE_ESD |
173 |
< |
printf("Using ESD audio output\n"); |
143 |
< |
|
144 |
< |
// ESD audio format |
172 |
> |
#ifdef ENABLE_ESD |
173 |
> |
int rate; |
174 |
|
esd_format_t format = ESD_STREAM | ESD_PLAY; |
175 |
< |
if (AudioStatus.sample_size == 8) |
176 |
< |
format |= ESD_BITS8; |
177 |
< |
else |
178 |
< |
format |= ESD_BITS16; |
179 |
< |
if (AudioStatus.channels == 1) |
180 |
< |
format |= ESD_MONO; |
181 |
< |
else |
182 |
< |
format |= ESD_STEREO; |
175 |
> |
|
176 |
> |
if (audio_sample_sizes.empty()) { |
177 |
> |
|
178 |
> |
// Default values |
179 |
> |
rate = 44100; |
180 |
> |
format |= (ESD_BITS16 | ESD_STEREO); |
181 |
> |
|
182 |
> |
} else { |
183 |
> |
|
184 |
> |
rate = audio_sample_rates[audio_sample_rate_index] >> 16; |
185 |
> |
if (audio_sample_sizes[audio_sample_size_index] == 8) |
186 |
> |
format |= ESD_BITS8; |
187 |
> |
else |
188 |
> |
format |= ESD_BITS16; |
189 |
> |
if (audio_channel_counts[audio_channel_count_index] == 1) |
190 |
> |
format |= ESD_MONO; |
191 |
> |
else |
192 |
> |
format |= ESD_STEREO; |
193 |
> |
} |
194 |
|
|
195 |
|
#if WORDS_BIGENDIAN |
196 |
|
little_endian = false; |
200 |
|
silence_byte = 0; // Is this correct for 8-bit mode? |
201 |
|
|
202 |
|
// Open connection to ESD server |
203 |
< |
audio_fd = esd_play_stream(format, AudioStatus.sample_rate >> 16, NULL, NULL); |
203 |
> |
audio_fd = esd_play_stream(format, rate, NULL, NULL); |
204 |
|
if (audio_fd < 0) { |
205 |
< |
char str[256]; |
166 |
< |
sprintf(str, GetString(STR_NO_ESD_WARN), strerror(errno)); |
167 |
< |
WarningAlert(str); |
205 |
> |
fprintf(stderr, "WARNING: Cannot open ESD connection\n"); |
206 |
|
return false; |
207 |
|
} |
208 |
|
|
209 |
+ |
printf("Using ESD audio output\n"); |
210 |
+ |
|
211 |
+ |
// ESD supports a variety of twisted little audio formats, all different |
212 |
+ |
if (audio_sample_sizes.empty()) { |
213 |
+ |
|
214 |
+ |
// The reason we do this here is that we don't want to add sample |
215 |
+ |
// rates etc. unless the ESD server connection could be opened |
216 |
+ |
// (if ESD fails, /dev/dsp might be tried next) |
217 |
+ |
audio_sample_rates.push_back(11025 << 16); |
218 |
+ |
audio_sample_rates.push_back(22050 << 16); |
219 |
+ |
audio_sample_rates.push_back(44100 << 16); |
220 |
+ |
audio_sample_sizes.push_back(8); |
221 |
+ |
audio_sample_sizes.push_back(16); |
222 |
+ |
audio_channel_counts.push_back(1); |
223 |
+ |
audio_channel_counts.push_back(2); |
224 |
+ |
|
225 |
+ |
// Default to highest supported values |
226 |
+ |
audio_sample_rate_index = audio_sample_rates.size() - 1; |
227 |
+ |
audio_sample_size_index = audio_sample_sizes.size() - 1; |
228 |
+ |
audio_channel_count_index = audio_channel_counts.size() - 1; |
229 |
+ |
} |
230 |
+ |
|
231 |
|
// Sound buffer size = 4096 frames |
232 |
|
audio_frames_per_block = 4096; |
173 |
– |
sound_buffer_size = (AudioStatus.sample_size >> 3) * AudioStatus.channels * audio_frames_per_block; |
233 |
|
return true; |
175 |
– |
#else |
176 |
– |
ErrorAlert("Basilisk II has been compiled with ESD support disabled."); |
177 |
– |
return false; |
234 |
|
#endif |
235 |
|
} |
236 |
|
|
237 |
< |
void AudioInit(void) |
237 |
> |
static bool open_audio(void) |
238 |
|
{ |
239 |
< |
char str[256]; |
240 |
< |
|
241 |
< |
// Init audio status (defaults) and feature flags |
242 |
< |
set_audio_status_format(); |
243 |
< |
AudioStatus.mixer = 0; |
244 |
< |
AudioStatus.num_sources = 0; |
189 |
< |
audio_component_flags = cmpWantsRegisterMessage | kStereoOut | k16BitOut; |
190 |
< |
|
191 |
< |
// Sound disabled in prefs? Then do nothing |
192 |
< |
if (PrefsFindBool("nosound")) |
193 |
< |
return; |
239 |
> |
#ifdef ENABLE_ESD |
240 |
> |
// If ESPEAKER is set, the user probably wants to use ESD, so try that first |
241 |
> |
if (getenv("ESPEAKER")) |
242 |
> |
if (open_esd()) |
243 |
> |
goto dev_opened; |
244 |
> |
#endif |
245 |
|
|
246 |
|
// Try to open /dev/dsp |
247 |
< |
audio_fd = open(DSP_NAME, O_WRONLY); |
248 |
< |
if (audio_fd < 0) { |
249 |
< |
#if ENABLE_ESD |
250 |
< |
if (!audio_init_esd()) |
251 |
< |
return; |
252 |
< |
#else |
253 |
< |
sprintf(str, GetString(STR_NO_AUDIO_DEV_WARN), DSP_NAME, strerror(errno)); |
254 |
< |
WarningAlert(str); |
204 |
< |
return; |
247 |
> |
if (open_dsp()) |
248 |
> |
goto dev_opened; |
249 |
> |
|
250 |
> |
#ifdef ENABLE_ESD |
251 |
> |
// Hm, /dev/dsp failed so we try ESD again if ESPEAKER wasn't set |
252 |
> |
if (!getenv("ESPEAKER")) |
253 |
> |
if (open_esd()) |
254 |
> |
goto dev_opened; |
255 |
|
#endif |
206 |
– |
} else |
207 |
– |
if (!audio_init_dsp()) |
208 |
– |
return; |
256 |
|
|
257 |
< |
// Try to open /dev/mixer |
258 |
< |
mixer_fd = open("/dev/mixer", O_RDWR); |
259 |
< |
if (mixer_fd < 0) |
213 |
< |
printf("WARNING: Cannot open /dev/mixer (%s)", strerror(errno)); |
257 |
> |
// No audio device succeeded |
258 |
> |
WarningAlert(GetString(STR_NO_AUDIO_WARN)); |
259 |
> |
return false; |
260 |
|
|
261 |
< |
// Init semaphore |
262 |
< |
if (sem_init(&audio_irq_done_sem, 0, 0) < 0) |
263 |
< |
return; |
264 |
< |
sem_inited = true; |
261 |
> |
// Device opened, set AudioStatus |
262 |
> |
dev_opened: |
263 |
> |
sound_buffer_size = (audio_sample_sizes[audio_sample_size_index] >> 3) * audio_channel_counts[audio_channel_count_index] * audio_frames_per_block; |
264 |
> |
set_audio_status_format(); |
265 |
|
|
266 |
|
// Start streaming thread |
267 |
|
pthread_attr_init(&stream_thread_attr); |
274 |
|
pthread_attr_setschedparam(&stream_thread_attr, &fifo_param); |
275 |
|
} |
276 |
|
#endif |
277 |
+ |
stream_thread_cancel = false; |
278 |
|
stream_thread_active = (pthread_create(&stream_thread, &stream_thread_attr, stream_func, NULL) == 0); |
279 |
|
|
280 |
< |
// Everything OK |
280 |
> |
// Everything went fine |
281 |
|
audio_open = true; |
282 |
+ |
return true; |
283 |
+ |
} |
284 |
+ |
|
285 |
+ |
void AudioInit(void) |
286 |
+ |
{ |
287 |
+ |
// Init audio status (reasonable defaults) and feature flags |
288 |
+ |
AudioStatus.sample_rate = 44100 << 16; |
289 |
+ |
AudioStatus.sample_size = 16; |
290 |
+ |
AudioStatus.channels = 2; |
291 |
+ |
AudioStatus.mixer = 0; |
292 |
+ |
AudioStatus.num_sources = 0; |
293 |
+ |
audio_component_flags = cmpWantsRegisterMessage | kStereoOut | k16BitOut; |
294 |
+ |
|
295 |
+ |
// Sound disabled in prefs? Then do nothing |
296 |
+ |
if (PrefsFindBool("nosound")) |
297 |
+ |
return; |
298 |
+ |
|
299 |
+ |
// Init semaphore |
300 |
+ |
if (sem_init(&audio_irq_done_sem, 0, 0) < 0) |
301 |
+ |
return; |
302 |
+ |
sem_inited = true; |
303 |
+ |
|
304 |
+ |
// Try to open /dev/mixer |
305 |
+ |
mixer_fd = open("/dev/mixer", O_RDWR); |
306 |
+ |
if (mixer_fd < 0) |
307 |
+ |
printf("WARNING: Cannot open /dev/mixer (%s)", strerror(errno)); |
308 |
+ |
|
309 |
+ |
// Open and initialize audio device |
310 |
+ |
open_audio(); |
311 |
|
} |
312 |
|
|
313 |
|
|
315 |
|
* Deinitialization |
316 |
|
*/ |
317 |
|
|
318 |
< |
void AudioExit(void) |
318 |
> |
static void close_audio(void) |
319 |
|
{ |
320 |
|
// Stop stream and delete semaphore |
321 |
|
if (stream_thread_active) { |
326 |
|
pthread_join(stream_thread, NULL); |
327 |
|
stream_thread_active = false; |
328 |
|
} |
253 |
– |
if (sem_inited) |
254 |
– |
sem_destroy(&audio_irq_done_sem); |
329 |
|
|
330 |
< |
// Close /dev/dsp |
331 |
< |
if (audio_fd > 0) |
330 |
> |
// Close /dev/dsp or ESD socket |
331 |
> |
if (audio_fd >= 0) { |
332 |
|
close(audio_fd); |
333 |
+ |
audio_fd = -1; |
334 |
+ |
} |
335 |
+ |
|
336 |
+ |
audio_open = false; |
337 |
+ |
} |
338 |
+ |
|
339 |
+ |
void AudioExit(void) |
340 |
+ |
{ |
341 |
+ |
// Close audio device |
342 |
+ |
close_audio(); |
343 |
+ |
|
344 |
+ |
// Delete semaphore |
345 |
+ |
if (sem_inited) { |
346 |
+ |
sem_destroy(&audio_irq_done_sem); |
347 |
+ |
sem_inited = false; |
348 |
+ |
} |
349 |
|
|
350 |
|
// Close /dev/mixer |
351 |
< |
if (mixer_fd > 0) |
351 |
> |
if (mixer_fd >= 0) { |
352 |
|
close(mixer_fd); |
353 |
+ |
mixer_fd = -1; |
354 |
+ |
} |
355 |
|
} |
356 |
|
|
357 |
|
|
379 |
|
* Streaming function |
380 |
|
*/ |
381 |
|
|
290 |
– |
static uint32 apple_stream_info; // Mac address of SoundComponentData struct describing next buffer |
291 |
– |
|
382 |
|
static void *stream_func(void *arg) |
383 |
|
{ |
384 |
|
int16 *silent_buffer = new int16[sound_buffer_size / 2]; |
462 |
|
|
463 |
|
/* |
464 |
|
* Set sampling parameters |
465 |
< |
* "index" is an index into the audio_sample_rates[] etc. arrays |
465 |
> |
* "index" is an index into the audio_sample_rates[] etc. vectors |
466 |
|
* It is guaranteed that AudioStatus.num_sources == 0 |
467 |
|
*/ |
468 |
|
|
469 |
< |
void audio_set_sample_rate(int index) |
469 |
> |
bool audio_set_sample_rate(int index) |
470 |
|
{ |
471 |
+ |
close_audio(); |
472 |
+ |
audio_sample_rate_index = index; |
473 |
+ |
return open_audio(); |
474 |
|
} |
475 |
|
|
476 |
< |
void audio_set_sample_size(int index) |
476 |
> |
bool audio_set_sample_size(int index) |
477 |
|
{ |
478 |
+ |
close_audio(); |
479 |
+ |
audio_sample_size_index = index; |
480 |
+ |
return open_audio(); |
481 |
|
} |
482 |
|
|
483 |
< |
void audio_set_channels(int index) |
483 |
> |
bool audio_set_channels(int index) |
484 |
|
{ |
485 |
+ |
close_audio(); |
486 |
+ |
audio_channel_count_index = index; |
487 |
+ |
return open_audio(); |
488 |
|
} |
489 |
|
|
490 |
|
|