Revision 0b3652bc audio/ossaudio.c
| b/audio/ossaudio.c | ||
|---|---|---|
| 64 | 64 |
const char *devpath_out; |
| 65 | 65 |
const char *devpath_in; |
| 66 | 66 |
int debug; |
| 67 |
int exclusive; |
|
| 68 |
int policy; |
|
| 67 | 69 |
} conf = {
|
| 68 | 70 |
.try_mmap = 0, |
| 69 | 71 |
.nfrags = 4, |
| 70 | 72 |
.fragsize = 4096, |
| 71 | 73 |
.devpath_out = "/dev/dsp", |
| 72 | 74 |
.devpath_in = "/dev/dsp", |
| 73 |
.debug = 0 |
|
| 75 |
.debug = 0, |
|
| 76 |
.exclusive = 0, |
|
| 77 |
.policy = 5 |
|
| 74 | 78 |
}; |
| 75 | 79 |
|
| 76 | 80 |
struct oss_params {
|
| ... | ... | |
| 234 | 238 |
struct oss_params *obt, int *pfd) |
| 235 | 239 |
{
|
| 236 | 240 |
int fd; |
| 237 |
int oflags;
|
|
| 238 |
int mmmmssss;
|
|
| 241 |
int version;
|
|
| 242 |
int oflags = conf.exclusive ? O_EXCL : 0;
|
|
| 239 | 243 |
audio_buf_info abinfo; |
| 240 | 244 |
int fmt, freq, nchannels; |
| 241 | 245 |
const char *dspname = in ? conf.devpath_in : conf.devpath_out; |
| 242 | 246 |
const char *typ = in ? "ADC" : "DAC"; |
| 243 | 247 |
|
| 244 | 248 |
/* Kludge needed to have working mmap on Linux */ |
| 245 |
oflags = conf.try_mmap ? O_RDWR : (in ? O_RDONLY : O_WRONLY); |
|
| 249 |
oflags |= conf.try_mmap ? O_RDWR : (in ? O_RDONLY : O_WRONLY); |
|
| 250 |
|
|
| 246 | 251 |
fd = open (dspname, oflags | O_NONBLOCK); |
| 247 | 252 |
if (-1 == fd) {
|
| 248 | 253 |
oss_logerr2 (errno, typ, "Failed to open `%s'\n", dspname); |
| ... | ... | |
| 274 | 279 |
goto err; |
| 275 | 280 |
} |
| 276 | 281 |
|
| 277 |
mmmmssss = (req->nfrags << 16) | ctz32 (req->fragsize); |
|
| 278 |
if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) {
|
|
| 279 |
oss_logerr2 (errno, typ, "Failed to set buffer length (%d, %d)\n", |
|
| 280 |
req->nfrags, req->fragsize); |
|
| 281 |
goto err; |
|
| 282 |
if (ioctl (fd, OSS_GETVERSION, &version)) {
|
|
| 283 |
oss_logerr2 (errno, typ, "Failed to get OSS version\n"); |
|
| 284 |
version = 0; |
|
| 285 |
} |
|
| 286 |
|
|
| 287 |
if (conf.debug) {
|
|
| 288 |
dolog ("OSS version = %#x\n", version);
|
|
| 289 |
} |
|
| 290 |
|
|
| 291 |
#ifdef SNDCTL_DSP_POLICY |
|
| 292 |
if (conf.policy >= 0 && version >= 0x040000) {
|
|
| 293 |
int policy = conf.policy; |
|
| 294 |
if (ioctl (fd, SNDCTL_DSP_POLICY, &policy)) {
|
|
| 295 |
oss_logerr2 (errno, typ, "Failed to set timing policy to %d\n", |
|
| 296 |
conf.policy); |
|
| 297 |
goto err; |
|
| 298 |
} |
|
| 299 |
} |
|
| 300 |
else |
|
| 301 |
#endif |
|
| 302 |
{
|
|
| 303 |
int mmmmssss = (req->nfrags << 16) | ctz32 (req->fragsize); |
|
| 304 |
if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) {
|
|
| 305 |
oss_logerr2 (errno, typ, "Failed to set buffer length (%d, %d)\n", |
|
| 306 |
req->nfrags, req->fragsize); |
|
| 307 |
goto err; |
|
| 308 |
} |
|
| 282 | 309 |
} |
| 283 | 310 |
|
| 284 | 311 |
if (ioctl (fd, in ? SNDCTL_DSP_GETISPACE : SNDCTL_DSP_GETOSPACE, &abinfo)) {
|
| ... | ... | |
| 840 | 867 |
.descr = "Path to ADC device" |
| 841 | 868 |
}, |
| 842 | 869 |
{
|
| 870 |
.name = "EXCLUSIVE", |
|
| 871 |
.tag = AUD_OPT_BOOL, |
|
| 872 |
.valp = &conf.exclusive, |
|
| 873 |
.descr = "Open device in exclusive mode (vmix wont work)" |
|
| 874 |
}, |
|
| 875 |
#ifdef SNDCTL_DSP_POLICY |
|
| 876 |
{
|
|
| 877 |
.name = "POLICY", |
|
| 878 |
.tag = AUD_OPT_INT, |
|
| 879 |
.valp = &conf.policy, |
|
| 880 |
.descr = "Set the timing policy of the device, -1 to use fragment mode", |
|
| 881 |
}, |
|
| 882 |
#endif |
|
| 883 |
{
|
|
| 843 | 884 |
.name = "DEBUG", |
| 844 | 885 |
.tag = AUD_OPT_BOOL, |
| 845 | 886 |
.valp = &conf.debug, |
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