28 |
#endif |
#endif |
29 |
|
|
30 |
#include "rdesktop.h" |
#include "rdesktop.h" |
31 |
|
#include "rdpsnd.h" |
32 |
|
#include "rdpsnd_dsp.h" |
33 |
#include <unistd.h> |
#include <unistd.h> |
34 |
#include <fcntl.h> |
#include <fcntl.h> |
35 |
#include <errno.h> |
#include <errno.h> |
36 |
|
#include <unistd.h> |
37 |
#include <sys/time.h> |
#include <sys/time.h> |
38 |
#include <sys/ioctl.h> |
#include <sys/ioctl.h> |
39 |
#include <sys/soundcard.h> |
#include <sys/soundcard.h> |
40 |
|
#include <sys/types.h> |
41 |
|
#include <sys/stat.h> |
42 |
|
|
43 |
#define MAX_QUEUE 10 |
#define DEFAULTDEVICE "/dev/dsp" |
44 |
|
#define MAX_LEN 512 |
45 |
|
|
46 |
int g_dsp_fd; |
static int snd_rate; |
47 |
BOOL g_dsp_busy = False; |
static short samplewidth; |
48 |
static int g_snd_rate; |
static char *dsp_dev; |
49 |
static short g_samplewidth; |
static BOOL in_esddsp; |
|
static BOOL g_driver_broken = False; |
|
50 |
|
|
51 |
static struct audio_packet |
/* This is a just a forward declaration */ |
52 |
{ |
static struct audio_driver oss_driver; |
|
struct stream s; |
|
|
uint16 tick; |
|
|
uint8 index; |
|
|
} packet_queue[MAX_QUEUE]; |
|
|
static unsigned int queue_hi, queue_lo; |
|
53 |
|
|
54 |
BOOL |
static BOOL |
55 |
wave_out_open(void) |
detect_esddsp(void) |
56 |
{ |
{ |
57 |
char *dsp_dev = getenv("AUDIODEV"); |
struct stat s; |
58 |
|
char *preload; |
59 |
|
|
60 |
if (dsp_dev == NULL) |
if (fstat(g_dsp_fd, &s) == -1) |
61 |
{ |
return False; |
|
dsp_dev = xstrdup("/dev/dsp"); |
|
|
} |
|
62 |
|
|
63 |
if ((g_dsp_fd = open(dsp_dev, O_WRONLY | O_NONBLOCK)) == -1) |
if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) |
64 |
|
return False; |
65 |
|
|
66 |
|
preload = getenv("LD_PRELOAD"); |
67 |
|
if (preload == NULL) |
68 |
|
return False; |
69 |
|
|
70 |
|
if (strstr(preload, "esddsp") == NULL) |
71 |
|
return False; |
72 |
|
|
73 |
|
return True; |
74 |
|
} |
75 |
|
|
76 |
|
BOOL |
77 |
|
oss_open(void) |
78 |
|
{ |
79 |
|
if ((g_dsp_fd = open(dsp_dev, O_WRONLY)) == -1) |
80 |
{ |
{ |
81 |
perror(dsp_dev); |
perror(dsp_dev); |
82 |
return False; |
return False; |
83 |
} |
} |
84 |
|
|
85 |
/* Non-blocking so that user interface is responsive */ |
in_esddsp = detect_esddsp(); |
86 |
fcntl(g_dsp_fd, F_SETFL, fcntl(g_dsp_fd, F_GETFL) | O_NONBLOCK); |
|
87 |
return True; |
return True; |
88 |
} |
} |
89 |
|
|
90 |
void |
void |
91 |
wave_out_close(void) |
oss_close(void) |
92 |
{ |
{ |
93 |
close(g_dsp_fd); |
close(g_dsp_fd); |
94 |
|
g_dsp_busy = 0; |
95 |
} |
} |
96 |
|
|
97 |
BOOL |
BOOL |
98 |
wave_out_format_supported(WAVEFORMATEX * pwfx) |
oss_format_supported(WAVEFORMATEX * pwfx) |
99 |
{ |
{ |
100 |
if (pwfx->wFormatTag != WAVE_FORMAT_PCM) |
if (pwfx->wFormatTag != WAVE_FORMAT_PCM) |
101 |
return False; |
return False; |
108 |
} |
} |
109 |
|
|
110 |
BOOL |
BOOL |
111 |
wave_out_set_format(WAVEFORMATEX * pwfx) |
oss_set_format(WAVEFORMATEX * pwfx) |
112 |
{ |
{ |
113 |
int stereo, format, fragments; |
int stereo, format, fragments; |
114 |
|
static BOOL driver_broken = False; |
115 |
|
|
116 |
ioctl(g_dsp_fd, SNDCTL_DSP_RESET, NULL); |
ioctl(g_dsp_fd, SNDCTL_DSP_RESET, NULL); |
117 |
ioctl(g_dsp_fd, SNDCTL_DSP_SYNC, NULL); |
ioctl(g_dsp_fd, SNDCTL_DSP_SYNC, NULL); |
121 |
else if (pwfx->wBitsPerSample == 16) |
else if (pwfx->wBitsPerSample == 16) |
122 |
format = AFMT_S16_LE; |
format = AFMT_S16_LE; |
123 |
|
|
124 |
g_samplewidth = pwfx->wBitsPerSample / 8; |
samplewidth = pwfx->wBitsPerSample / 8; |
125 |
|
|
126 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_SETFMT, &format) == -1) |
if (ioctl(g_dsp_fd, SNDCTL_DSP_SETFMT, &format) == -1) |
127 |
{ |
{ |
128 |
perror("SNDCTL_DSP_SETFMT"); |
perror("SNDCTL_DSP_SETFMT"); |
129 |
close(g_dsp_fd); |
oss_close(); |
130 |
return False; |
return False; |
131 |
} |
} |
132 |
|
|
133 |
if (pwfx->nChannels == 2) |
if (pwfx->nChannels == 2) |
134 |
{ |
{ |
135 |
stereo = 1; |
stereo = 1; |
136 |
g_samplewidth *= 2; |
samplewidth *= 2; |
137 |
} |
} |
138 |
else |
else |
139 |
{ |
{ |
143 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_STEREO, &stereo) == -1) |
if (ioctl(g_dsp_fd, SNDCTL_DSP_STEREO, &stereo) == -1) |
144 |
{ |
{ |
145 |
perror("SNDCTL_DSP_CHANNELS"); |
perror("SNDCTL_DSP_CHANNELS"); |
146 |
close(g_dsp_fd); |
oss_close(); |
147 |
return False; |
return False; |
148 |
} |
} |
149 |
|
|
150 |
g_snd_rate = pwfx->nSamplesPerSec; |
oss_driver.need_resampling = 0; |
151 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_SPEED, &g_snd_rate) == -1) |
snd_rate = pwfx->nSamplesPerSec; |
152 |
|
if (ioctl(g_dsp_fd, SNDCTL_DSP_SPEED, &snd_rate) == -1) |
153 |
{ |
{ |
154 |
perror("SNDCTL_DSP_SPEED"); |
int rates[] = { 44100, 48000, 0 }; |
155 |
close(g_dsp_fd); |
int *prates = rates; |
156 |
return False; |
|
157 |
|
while (*prates != 0) |
158 |
|
{ |
159 |
|
if ((pwfx->nSamplesPerSec != *prates) |
160 |
|
&& (ioctl(g_dsp_fd, SNDCTL_DSP_SPEED, prates) != -1)) |
161 |
|
{ |
162 |
|
oss_driver.need_resampling = 1; |
163 |
|
snd_rate = *prates; |
164 |
|
if (rdpsnd_dsp_resample_set |
165 |
|
(snd_rate, pwfx->wBitsPerSample, pwfx->nChannels) == False) |
166 |
|
{ |
167 |
|
error("rdpsnd_dsp_resample_set failed"); |
168 |
|
oss_close(); |
169 |
|
return False; |
170 |
|
} |
171 |
|
|
172 |
|
break; |
173 |
|
} |
174 |
|
prates++; |
175 |
|
} |
176 |
|
|
177 |
|
if (*prates == 0) |
178 |
|
{ |
179 |
|
perror("SNDCTL_DSP_SPEED"); |
180 |
|
oss_close(); |
181 |
|
return False; |
182 |
|
} |
183 |
} |
} |
184 |
|
|
185 |
/* try to get 7 fragments of 2^12 bytes size */ |
/* try to get 12 fragments of 2^12 bytes size */ |
186 |
fragments = (7 << 16) + 12; |
fragments = (12 << 16) + 12; |
187 |
ioctl(g_dsp_fd, SNDCTL_DSP_SETFRAGMENT, &fragments); |
ioctl(g_dsp_fd, SNDCTL_DSP_SETFRAGMENT, &fragments); |
188 |
|
|
189 |
if (!g_driver_broken) |
if (!driver_broken) |
190 |
{ |
{ |
191 |
audio_buf_info info; |
audio_buf_info info; |
192 |
|
|
194 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETOSPACE, &info) == -1) |
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETOSPACE, &info) == -1) |
195 |
{ |
{ |
196 |
perror("SNDCTL_DSP_GETOSPACE"); |
perror("SNDCTL_DSP_GETOSPACE"); |
197 |
close(g_dsp_fd); |
oss_close(); |
198 |
return False; |
return False; |
199 |
} |
} |
200 |
|
|
203 |
fprintf(stderr, |
fprintf(stderr, |
204 |
"Broken OSS-driver detected: fragments: %d, fragstotal: %d, fragsize: %d\n", |
"Broken OSS-driver detected: fragments: %d, fragstotal: %d, fragsize: %d\n", |
205 |
info.fragments, info.fragstotal, info.fragsize); |
info.fragments, info.fragstotal, info.fragsize); |
206 |
g_driver_broken = True; |
driver_broken = True; |
207 |
} |
} |
208 |
} |
} |
209 |
|
|
211 |
} |
} |
212 |
|
|
213 |
void |
void |
214 |
wave_out_volume(uint16 left, uint16 right) |
oss_volume(uint16 left, uint16 right) |
215 |
{ |
{ |
|
static BOOL use_dev_mixer = False; |
|
216 |
uint32 volume; |
uint32 volume; |
|
int fd_mix = -1; |
|
217 |
|
|
218 |
volume = left / (65536 / 100); |
volume = left / (65536 / 100); |
219 |
volume |= right / (65536 / 100) << 8; |
volume |= right / (65536 / 100) << 8; |
220 |
|
|
|
if (use_dev_mixer) |
|
|
{ |
|
|
if ((fd_mix = open("/dev/mixer", O_RDWR | O_NONBLOCK)) == -1) |
|
|
{ |
|
|
perror("open /dev/mixer"); |
|
|
return; |
|
|
} |
|
|
|
|
|
if (ioctl(fd_mix, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1) |
|
|
{ |
|
|
perror("MIXER_WRITE(SOUND_MIXER_PCM)"); |
|
|
return; |
|
|
} |
|
|
|
|
|
close(fd_mix); |
|
|
} |
|
|
|
|
221 |
if (ioctl(g_dsp_fd, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1) |
if (ioctl(g_dsp_fd, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1) |
222 |
{ |
{ |
223 |
perror("MIXER_WRITE(SOUND_MIXER_PCM)"); |
warning("hardware volume control unavailable, falling back to software volume control!\n"); |
224 |
use_dev_mixer = True; |
oss_driver.wave_out_volume = rdpsnd_dsp_softvol_set; |
225 |
|
rdpsnd_dsp_softvol_set(left, right); |
226 |
return; |
return; |
227 |
} |
} |
228 |
} |
} |
229 |
|
|
230 |
void |
void |
231 |
wave_out_write(STREAM s, uint16 tick, uint8 index) |
oss_play(void) |
232 |
{ |
{ |
233 |
struct audio_packet *packet = &packet_queue[queue_hi]; |
struct audio_packet *packet; |
234 |
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
ssize_t len; |
235 |
|
STREAM out; |
236 |
|
|
237 |
if (next_hi == queue_lo) |
if (rdpsnd_queue_empty()) |
238 |
{ |
{ |
239 |
error("No space to queue audio packet\n"); |
g_dsp_busy = 0; |
240 |
return; |
return; |
241 |
} |
} |
242 |
|
|
243 |
queue_hi = next_hi; |
packet = rdpsnd_queue_current_packet(); |
244 |
|
out = &packet->s; |
245 |
|
|
246 |
packet->s = *s; |
len = out->end - out->p; |
|
packet->tick = tick; |
|
|
packet->index = index; |
|
|
packet->s.p += 4; |
|
247 |
|
|
248 |
/* we steal the data buffer from s, give it a new one */ |
len = write(g_dsp_fd, out->p, (len > MAX_LEN) ? MAX_LEN : len); |
249 |
s->data = (uint8 *) malloc(s->size); |
if (len == -1) |
250 |
|
{ |
251 |
|
if (errno != EWOULDBLOCK) |
252 |
|
perror("write audio"); |
253 |
|
g_dsp_busy = 1; |
254 |
|
return; |
255 |
|
} |
256 |
|
|
257 |
if (!g_dsp_busy) |
out->p += len; |
|
wave_out_play(); |
|
|
} |
|
258 |
|
|
259 |
void |
if (out->p == out->end) |
|
wave_out_play(void) |
|
|
{ |
|
|
struct audio_packet *packet; |
|
|
ssize_t len; |
|
|
STREAM out; |
|
|
static long startedat_us; |
|
|
static long startedat_s; |
|
|
static BOOL started = False; |
|
|
struct timeval tv; |
|
|
audio_buf_info info; |
|
|
|
|
|
while (1) |
|
260 |
{ |
{ |
261 |
if (queue_lo == queue_hi) |
int delay_bytes; |
262 |
{ |
unsigned long delay_us; |
263 |
g_dsp_busy = 0; |
audio_buf_info info; |
|
return; |
|
|
} |
|
|
|
|
|
packet = &packet_queue[queue_lo]; |
|
|
out = &packet->s; |
|
264 |
|
|
265 |
if (!started) |
if (in_esddsp) |
266 |
{ |
{ |
267 |
gettimeofday(&tv, NULL); |
/* EsounD has no way of querying buffer status, so we have to |
268 |
startedat_us = tv.tv_usec; |
* go with a fixed size. */ |
269 |
startedat_s = tv.tv_sec; |
delay_bytes = out->size; |
|
started = True; |
|
270 |
} |
} |
271 |
|
else |
|
len = out->end - out->p; |
|
|
|
|
|
if (!g_driver_broken) |
|
272 |
{ |
{ |
273 |
memset(&info, 0, sizeof(info)); |
#ifdef SNDCTL_DSP_GETODELAY |
274 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETOSPACE, &info) == -1) |
delay_bytes = 0; |
275 |
{ |
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETODELAY, &delay_bytes) == -1) |
276 |
perror("SNDCTL_DSP_GETOSPACE"); |
delay_bytes = -1; |
277 |
return; |
#else |
278 |
} |
delay_bytes = -1; |
279 |
|
#endif |
|
if (info.fragments == 0) |
|
|
{ |
|
|
g_dsp_busy = 1; |
|
|
return; |
|
|
} |
|
280 |
|
|
281 |
if (info.fragments * info.fragsize < len |
if (delay_bytes == -1) |
|
&& info.fragments * info.fragsize > 0) |
|
282 |
{ |
{ |
283 |
len = info.fragments * info.fragsize; |
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETOSPACE, &info) != -1) |
284 |
|
delay_bytes = info.fragstotal * info.fragsize - info.bytes; |
285 |
|
else |
286 |
|
delay_bytes = out->size; |
287 |
} |
} |
288 |
} |
} |
289 |
|
|
290 |
|
delay_us = delay_bytes * (1000000 / (samplewidth * snd_rate)); |
291 |
|
rdpsnd_queue_next(delay_us); |
292 |
|
} |
293 |
|
else |
294 |
|
{ |
295 |
|
g_dsp_busy = 1; |
296 |
|
} |
297 |
|
|
298 |
len = write(g_dsp_fd, out->p, len); |
return; |
299 |
if (len == -1) |
} |
|
{ |
|
|
if (errno != EWOULDBLOCK) |
|
|
perror("write audio"); |
|
|
g_dsp_busy = 1; |
|
|
return; |
|
|
} |
|
300 |
|
|
301 |
out->p += len; |
static struct audio_driver oss_driver = { |
302 |
if (out->p == out->end) |
.name = "oss", |
303 |
{ |
.description = "OSS output driver, default device: " DEFAULTDEVICE " or $AUDIODEV", |
304 |
long long duration; |
|
305 |
long elapsed; |
.wave_out_open = oss_open, |
306 |
|
.wave_out_close = oss_close, |
307 |
|
.wave_out_format_supported = oss_format_supported, |
308 |
|
.wave_out_set_format = oss_set_format, |
309 |
|
.wave_out_volume = oss_volume, |
310 |
|
.wave_out_play = oss_play, |
311 |
|
|
312 |
|
.need_byteswap_on_be = 0, |
313 |
|
.need_resampling = 0, |
314 |
|
}; |
315 |
|
|
316 |
gettimeofday(&tv, NULL); |
struct audio_driver * |
317 |
duration = (out->size * (1000000 / (g_samplewidth * g_snd_rate))); |
oss_register(char *options) |
318 |
elapsed = (tv.tv_sec - startedat_s) * 1000000 + (tv.tv_usec - startedat_us); |
{ |
319 |
|
if (options) |
320 |
|
{ |
321 |
|
dsp_dev = xstrdup(options); |
322 |
|
} |
323 |
|
else |
324 |
|
{ |
325 |
|
dsp_dev = getenv("AUDIODEV"); |
326 |
|
|
327 |
if (elapsed >= (duration * 85) / 100) |
if (dsp_dev == NULL) |
328 |
{ |
{ |
329 |
rdpsnd_send_completion(packet->tick, packet->index); |
dsp_dev = xstrdup(DEFAULTDEVICE); |
|
free(out->data); |
|
|
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
|
|
started = False; |
|
|
} |
|
|
else |
|
|
{ |
|
|
g_dsp_busy = 1; |
|
|
return; |
|
|
} |
|
330 |
} |
} |
331 |
} |
} |
332 |
|
|
333 |
|
return &oss_driver; |
334 |
} |
} |