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 |
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#include <sys/stat.h> |
42 |
|
|
43 |
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#define DEFAULTDEVICE "/dev/dsp" |
44 |
#define MAX_LEN 512 |
#define MAX_LEN 512 |
|
#define MAX_QUEUE 10 |
|
45 |
|
|
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int g_dsp_fd; |
|
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BOOL g_dsp_busy = False; |
|
46 |
static int snd_rate; |
static int snd_rate; |
47 |
static short samplewidth; |
static short samplewidth; |
48 |
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static char *dsp_dev; |
49 |
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static struct audio_driver oss_driver; |
50 |
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static BOOL in_esddsp; |
51 |
|
|
52 |
static struct audio_packet |
static BOOL |
53 |
|
detect_esddsp(void) |
54 |
{ |
{ |
55 |
struct stream s; |
struct stat s; |
56 |
uint16 tick; |
char *preload; |
|
uint8 index; |
|
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} packet_queue[MAX_QUEUE]; |
|
|
static unsigned int queue_hi, queue_lo; |
|
57 |
|
|
58 |
BOOL |
if (fstat(g_dsp_fd, &s) == -1) |
59 |
wave_out_open(void) |
return False; |
|
{ |
|
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char *dsp_dev = getenv("AUDIODEV"); |
|
60 |
|
|
61 |
if (dsp_dev == NULL) |
if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) |
62 |
{ |
return False; |
|
dsp_dev = xstrdup("/dev/dsp"); |
|
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} |
|
63 |
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|
64 |
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preload = getenv("LD_PRELOAD"); |
65 |
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if (preload == NULL) |
66 |
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return False; |
67 |
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|
68 |
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if (strstr(preload, "esddsp") == NULL) |
69 |
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return False; |
70 |
|
|
71 |
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return True; |
72 |
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} |
73 |
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|
74 |
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BOOL |
75 |
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oss_open(void) |
76 |
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{ |
77 |
if ((g_dsp_fd = open(dsp_dev, O_WRONLY)) == -1) |
if ((g_dsp_fd = open(dsp_dev, O_WRONLY)) == -1) |
78 |
{ |
{ |
79 |
perror(dsp_dev); |
perror(dsp_dev); |
80 |
return False; |
return False; |
81 |
} |
} |
82 |
|
|
83 |
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in_esddsp = detect_esddsp(); |
84 |
|
|
85 |
return True; |
return True; |
86 |
} |
} |
87 |
|
|
88 |
void |
void |
89 |
wave_out_close(void) |
oss_close(void) |
90 |
{ |
{ |
91 |
close(g_dsp_fd); |
close(g_dsp_fd); |
92 |
|
g_dsp_busy = 0; |
93 |
} |
} |
94 |
|
|
95 |
BOOL |
BOOL |
96 |
wave_out_format_supported(WAVEFORMATEX * pwfx) |
oss_format_supported(WAVEFORMATEX * pwfx) |
97 |
{ |
{ |
98 |
if (pwfx->wFormatTag != WAVE_FORMAT_PCM) |
if (pwfx->wFormatTag != WAVE_FORMAT_PCM) |
99 |
return False; |
return False; |
106 |
} |
} |
107 |
|
|
108 |
BOOL |
BOOL |
109 |
wave_out_set_format(WAVEFORMATEX * pwfx) |
oss_set_format(WAVEFORMATEX * pwfx) |
110 |
{ |
{ |
111 |
int stereo, format, fragments; |
int stereo, format, fragments; |
112 |
static BOOL driver_broken = False; |
static BOOL driver_broken = False; |
124 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_SETFMT, &format) == -1) |
if (ioctl(g_dsp_fd, SNDCTL_DSP_SETFMT, &format) == -1) |
125 |
{ |
{ |
126 |
perror("SNDCTL_DSP_SETFMT"); |
perror("SNDCTL_DSP_SETFMT"); |
127 |
close(g_dsp_fd); |
oss_close(); |
128 |
return False; |
return False; |
129 |
} |
} |
130 |
|
|
141 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_STEREO, &stereo) == -1) |
if (ioctl(g_dsp_fd, SNDCTL_DSP_STEREO, &stereo) == -1) |
142 |
{ |
{ |
143 |
perror("SNDCTL_DSP_CHANNELS"); |
perror("SNDCTL_DSP_CHANNELS"); |
144 |
close(g_dsp_fd); |
oss_close(); |
145 |
return False; |
return False; |
146 |
} |
} |
147 |
|
|
148 |
|
oss_driver.need_resampling = 0; |
149 |
snd_rate = pwfx->nSamplesPerSec; |
snd_rate = pwfx->nSamplesPerSec; |
150 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_SPEED, &snd_rate) == -1) |
if (ioctl(g_dsp_fd, SNDCTL_DSP_SPEED, &snd_rate) == -1) |
151 |
{ |
{ |
152 |
perror("SNDCTL_DSP_SPEED"); |
int rates[] = { 44100, 48000, 0 }; |
153 |
close(g_dsp_fd); |
int *prates = rates; |
154 |
return False; |
|
155 |
|
while (*prates != 0) |
156 |
|
{ |
157 |
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if ((pwfx->nSamplesPerSec != *prates) |
158 |
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&& (ioctl(g_dsp_fd, SNDCTL_DSP_SPEED, prates) != -1)) |
159 |
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{ |
160 |
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oss_driver.need_resampling = 1; |
161 |
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snd_rate = *prates; |
162 |
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if (rdpsnd_dsp_resample_set |
163 |
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(snd_rate, pwfx->wBitsPerSample, pwfx->nChannels) == False) |
164 |
|
{ |
165 |
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error("rdpsnd_dsp_resample_set failed"); |
166 |
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oss_close(); |
167 |
|
return False; |
168 |
|
} |
169 |
|
|
170 |
|
break; |
171 |
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} |
172 |
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prates++; |
173 |
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} |
174 |
|
|
175 |
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if (*prates == 0) |
176 |
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{ |
177 |
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perror("SNDCTL_DSP_SPEED"); |
178 |
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oss_close(); |
179 |
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return False; |
180 |
|
} |
181 |
} |
} |
182 |
|
|
183 |
/* try to get 12 fragments of 2^12 bytes size */ |
/* try to get 12 fragments of 2^12 bytes size */ |
192 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETOSPACE, &info) == -1) |
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETOSPACE, &info) == -1) |
193 |
{ |
{ |
194 |
perror("SNDCTL_DSP_GETOSPACE"); |
perror("SNDCTL_DSP_GETOSPACE"); |
195 |
close(g_dsp_fd); |
oss_close(); |
196 |
return False; |
return False; |
197 |
} |
} |
198 |
|
|
209 |
} |
} |
210 |
|
|
211 |
void |
void |
212 |
wave_out_volume(uint16 left, uint16 right) |
oss_volume(uint16 left, uint16 right) |
213 |
{ |
{ |
|
static BOOL use_dev_mixer = False; |
|
214 |
uint32 volume; |
uint32 volume; |
|
int fd_mix = -1; |
|
215 |
|
|
216 |
volume = left / (65536 / 100); |
volume = left / (65536 / 100); |
217 |
volume |= right / (65536 / 100) << 8; |
volume |= right / (65536 / 100) << 8; |
218 |
|
|
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if (use_dev_mixer) |
|
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{ |
|
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if ((fd_mix = open("/dev/mixer", O_RDWR | O_NONBLOCK)) == -1) |
|
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{ |
|
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perror("open /dev/mixer"); |
|
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return; |
|
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} |
|
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|
|
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if (ioctl(fd_mix, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1) |
|
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{ |
|
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perror("MIXER_WRITE(SOUND_MIXER_PCM)"); |
|
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return; |
|
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} |
|
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|
|
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close(fd_mix); |
|
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} |
|
|
|
|
219 |
if (ioctl(g_dsp_fd, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1) |
if (ioctl(g_dsp_fd, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1) |
220 |
{ |
{ |
221 |
perror("MIXER_WRITE(SOUND_MIXER_PCM)"); |
warning("hardware volume control unavailable, falling back to software volume control!\n"); |
222 |
use_dev_mixer = True; |
oss_driver.wave_out_volume = rdpsnd_dsp_softvol_set; |
223 |
|
rdpsnd_dsp_softvol_set(left, right); |
224 |
return; |
return; |
225 |
} |
} |
226 |
} |
} |
227 |
|
|
228 |
void |
void |
229 |
wave_out_write(STREAM s, uint16 tick, uint8 index) |
oss_play(void) |
|
{ |
|
|
struct audio_packet *packet = &packet_queue[queue_hi]; |
|
|
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
|
|
|
|
|
if (next_hi == queue_lo) |
|
|
{ |
|
|
error("No space to queue audio packet\n"); |
|
|
return; |
|
|
} |
|
|
|
|
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queue_hi = next_hi; |
|
|
|
|
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packet->s = *s; |
|
|
packet->tick = tick; |
|
|
packet->index = index; |
|
|
packet->s.p += 4; |
|
|
|
|
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/* we steal the data buffer from s, give it a new one */ |
|
|
s->data = (uint8 *) malloc(s->size); |
|
|
|
|
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if (!g_dsp_busy) |
|
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wave_out_play(); |
|
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} |
|
|
|
|
|
void |
|
|
wave_out_play(void) |
|
230 |
{ |
{ |
231 |
struct audio_packet *packet; |
struct audio_packet *packet; |
232 |
ssize_t len; |
ssize_t len; |
233 |
STREAM out; |
STREAM out; |
|
static long startedat_us; |
|
|
static long startedat_s; |
|
|
static BOOL started = False; |
|
|
struct timeval tv; |
|
234 |
|
|
235 |
if (queue_lo == queue_hi) |
if (rdpsnd_queue_empty()) |
236 |
{ |
{ |
237 |
g_dsp_busy = 0; |
g_dsp_busy = 0; |
238 |
return; |
return; |
239 |
} |
} |
240 |
|
|
241 |
packet = &packet_queue[queue_lo]; |
packet = rdpsnd_queue_current_packet(); |
242 |
out = &packet->s; |
out = &packet->s; |
243 |
|
|
|
if (!started) |
|
|
{ |
|
|
gettimeofday(&tv, NULL); |
|
|
startedat_us = tv.tv_usec; |
|
|
startedat_s = tv.tv_sec; |
|
|
started = True; |
|
|
} |
|
|
|
|
244 |
len = out->end - out->p; |
len = out->end - out->p; |
245 |
|
|
246 |
len = write(g_dsp_fd, out->p, (len > MAX_LEN) ? MAX_LEN : len); |
len = write(g_dsp_fd, out->p, (len > MAX_LEN) ? MAX_LEN : len); |
253 |
} |
} |
254 |
|
|
255 |
out->p += len; |
out->p += len; |
256 |
|
|
257 |
if (out->p == out->end) |
if (out->p == out->end) |
258 |
{ |
{ |
259 |
long long duration; |
int delay_bytes; |
260 |
long elapsed; |
unsigned long delay_us; |
261 |
|
audio_buf_info info; |
|
gettimeofday(&tv, NULL); |
|
|
duration = (out->size * (1000000 / (samplewidth * snd_rate))); |
|
|
elapsed = (tv.tv_sec - startedat_s) * 1000000 + (tv.tv_usec - startedat_us); |
|
262 |
|
|
263 |
if (elapsed >= (duration * 85) / 100) |
if (in_esddsp) |
264 |
{ |
{ |
265 |
rdpsnd_send_completion(packet->tick, packet->index); |
/* EsounD has no way of querying buffer status, so we have to |
266 |
free(out->data); |
* go with a fixed size. */ |
267 |
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
delay_bytes = out->size; |
|
started = False; |
|
268 |
} |
} |
269 |
else |
else |
270 |
{ |
{ |
271 |
g_dsp_busy = 1; |
#ifdef SNDCTL_DSP_GETODELAY |
272 |
return; |
delay_bytes = 0; |
273 |
|
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETODELAY, &delay_bytes) == -1) |
274 |
|
delay_bytes = -1; |
275 |
|
#else |
276 |
|
delay_bytes = -1; |
277 |
|
#endif |
278 |
|
|
279 |
|
if (delay_bytes == -1) |
280 |
|
{ |
281 |
|
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETOSPACE, &info) != -1) |
282 |
|
delay_bytes = info.fragstotal * info.fragsize - info.bytes; |
283 |
|
else |
284 |
|
delay_bytes = out->size; |
285 |
|
} |
286 |
} |
} |
287 |
|
|
288 |
|
delay_us = delay_bytes * (1000000 / (samplewidth * snd_rate)); |
289 |
|
rdpsnd_queue_next(delay_us); |
290 |
} |
} |
291 |
g_dsp_busy = 1; |
else |
292 |
|
{ |
293 |
|
g_dsp_busy = 1; |
294 |
|
} |
295 |
|
|
296 |
return; |
return; |
297 |
} |
} |
298 |
|
|
299 |
|
struct audio_driver * |
300 |
|
oss_register(char *options) |
301 |
|
{ |
302 |
|
oss_driver.wave_out_open = oss_open; |
303 |
|
oss_driver.wave_out_close = oss_close; |
304 |
|
oss_driver.wave_out_format_supported = oss_format_supported; |
305 |
|
oss_driver.wave_out_set_format = oss_set_format; |
306 |
|
oss_driver.wave_out_volume = oss_volume; |
307 |
|
oss_driver.wave_out_play = oss_play; |
308 |
|
oss_driver.name = xstrdup("oss"); |
309 |
|
oss_driver.description = |
310 |
|
xstrdup("OSS output driver, default device: " DEFAULTDEVICE " or $AUDIODEV"); |
311 |
|
oss_driver.need_byteswap_on_be = 0; |
312 |
|
oss_driver.need_resampling = 0; |
313 |
|
oss_driver.next = NULL; |
314 |
|
|
315 |
|
if (options) |
316 |
|
{ |
317 |
|
dsp_dev = xstrdup(options); |
318 |
|
} |
319 |
|
else |
320 |
|
{ |
321 |
|
dsp_dev = getenv("AUDIODEV"); |
322 |
|
|
323 |
|
if (dsp_dev == NULL) |
324 |
|
{ |
325 |
|
dsp_dev = xstrdup(DEFAULTDEVICE); |
326 |
|
} |
327 |
|
} |
328 |
|
|
329 |
|
return &oss_driver; |
330 |
|
} |