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| 1 |
/*
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|---|---|
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* QEMU OSS audio driver
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*
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* Copyright (c) 2003-2005 Vassili Karpov (malc)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
|
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* of this software and associated documentation files (the "Software"), to deal
|
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h> |
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#include <sys/mman.h> |
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#include <sys/types.h> |
| 27 |
#include <sys/ioctl.h> |
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#ifdef __OpenBSD__
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#include <soundcard.h> |
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#else
|
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#include <sys/soundcard.h> |
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#endif
|
| 33 |
#include "qemu-common.h" |
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#include "host-utils.h" |
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#include "qemu-char.h" |
| 36 |
#include "audio.h" |
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|
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#define AUDIO_CAP "oss" |
| 39 |
#include "audio_int.h" |
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|
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#if defined OSS_GETVERSION && defined SNDCTL_DSP_POLICY
|
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#define USE_DSP_POLICY
|
| 43 |
#endif
|
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|
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typedef struct OSSVoiceOut { |
| 46 |
HWVoiceOut hw; |
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void *pcm_buf;
|
| 48 |
int fd;
|
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int wpos;
|
| 50 |
int nfrags;
|
| 51 |
int fragsize;
|
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int mmapped;
|
| 53 |
int pending;
|
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} OSSVoiceOut; |
| 55 |
|
| 56 |
typedef struct OSSVoiceIn { |
| 57 |
HWVoiceIn hw; |
| 58 |
void *pcm_buf;
|
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int fd;
|
| 60 |
int nfrags;
|
| 61 |
int fragsize;
|
| 62 |
} OSSVoiceIn; |
| 63 |
|
| 64 |
static struct { |
| 65 |
int try_mmap;
|
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int nfrags;
|
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int fragsize;
|
| 68 |
const char *devpath_out; |
| 69 |
const char *devpath_in; |
| 70 |
int debug;
|
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int exclusive;
|
| 72 |
int policy;
|
| 73 |
} conf = {
|
| 74 |
.try_mmap = 0,
|
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.nfrags = 4,
|
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.fragsize = 4096,
|
| 77 |
.devpath_out = "/dev/dsp",
|
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.devpath_in = "/dev/dsp",
|
| 79 |
.debug = 0,
|
| 80 |
.exclusive = 0,
|
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.policy = 5
|
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}; |
| 83 |
|
| 84 |
struct oss_params {
|
| 85 |
int freq;
|
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audfmt_e fmt; |
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int nchannels;
|
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int nfrags;
|
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int fragsize;
|
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}; |
| 91 |
|
| 92 |
static void GCC_FMT_ATTR (2, 3) oss_logerr (int err, const char *fmt, ...) |
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{
|
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va_list ap; |
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|
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va_start (ap, fmt); |
| 97 |
AUD_vlog (AUDIO_CAP, fmt, ap); |
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va_end (ap); |
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|
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AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err));
|
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} |
| 102 |
|
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static void GCC_FMT_ATTR (3, 4) oss_logerr2 ( |
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int err,
|
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const char *typ, |
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const char *fmt, |
| 107 |
... |
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) |
| 109 |
{
|
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va_list ap; |
| 111 |
|
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AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
|
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|
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va_start (ap, fmt); |
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AUD_vlog (AUDIO_CAP, fmt, ap); |
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va_end (ap); |
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|
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AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err));
|
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} |
| 120 |
|
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static void oss_anal_close (int *fdp) |
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{
|
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int err;
|
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|
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qemu_set_fd_handler (*fdp, NULL, NULL, NULL); |
| 126 |
err = close (*fdp); |
| 127 |
if (err) {
|
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oss_logerr (errno, "Failed to close file(fd=%d)\n", *fdp);
|
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} |
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*fdp = -1;
|
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} |
| 132 |
|
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static void oss_helper_poll_out (void *opaque) |
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{
|
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(void) opaque;
|
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audio_run ("oss_poll_out");
|
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} |
| 138 |
|
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static void oss_helper_poll_in (void *opaque) |
| 140 |
{
|
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(void) opaque;
|
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audio_run ("oss_poll_in");
|
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} |
| 144 |
|
| 145 |
static int oss_poll_out (HWVoiceOut *hw) |
| 146 |
{
|
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OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| 148 |
|
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return qemu_set_fd_handler (oss->fd, NULL, oss_helper_poll_out, NULL); |
| 150 |
} |
| 151 |
|
| 152 |
static int oss_poll_in (HWVoiceIn *hw) |
| 153 |
{
|
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OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| 155 |
|
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return qemu_set_fd_handler (oss->fd, oss_helper_poll_in, NULL, NULL); |
| 157 |
} |
| 158 |
|
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static int oss_write (SWVoiceOut *sw, void *buf, int len) |
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{
|
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return audio_pcm_sw_write (sw, buf, len);
|
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} |
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|
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static int aud_to_ossfmt (audfmt_e fmt) |
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{
|
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switch (fmt) {
|
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case AUD_FMT_S8:
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return AFMT_S8;
|
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|
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case AUD_FMT_U8:
|
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return AFMT_U8;
|
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|
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case AUD_FMT_S16:
|
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return AFMT_S16_LE;
|
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|
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case AUD_FMT_U16:
|
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return AFMT_U16_LE;
|
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|
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default:
|
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dolog ("Internal logic error: Bad audio format %d\n", fmt);
|
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#ifdef DEBUG_AUDIO
|
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abort (); |
| 183 |
#endif
|
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return AFMT_U8;
|
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} |
| 186 |
} |
| 187 |
|
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static int oss_to_audfmt (int ossfmt, audfmt_e *fmt, int *endianness) |
| 189 |
{
|
| 190 |
switch (ossfmt) {
|
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case AFMT_S8:
|
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*endianness = 0;
|
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*fmt = AUD_FMT_S8; |
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break;
|
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|
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case AFMT_U8:
|
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*endianness = 0;
|
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*fmt = AUD_FMT_U8; |
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break;
|
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|
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case AFMT_S16_LE:
|
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*endianness = 0;
|
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*fmt = AUD_FMT_S16; |
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break;
|
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|
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case AFMT_U16_LE:
|
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*endianness = 0;
|
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*fmt = AUD_FMT_U16; |
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break;
|
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|
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case AFMT_S16_BE:
|
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*endianness = 1;
|
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*fmt = AUD_FMT_S16; |
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break;
|
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|
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case AFMT_U16_BE:
|
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*endianness = 1;
|
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*fmt = AUD_FMT_U16; |
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break;
|
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|
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default:
|
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dolog ("Unrecognized audio format %d\n", ossfmt);
|
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return -1; |
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} |
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|
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return 0; |
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} |
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|
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#if defined DEBUG_MISMATCHES || defined DEBUG
|
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static void oss_dump_info (struct oss_params *req, struct oss_params *obt) |
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{
|
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dolog ("parameter | requested value | obtained value\n");
|
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dolog ("format | %10d | %10d\n", req->fmt, obt->fmt);
|
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dolog ("channels | %10d | %10d\n",
|
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req->nchannels, obt->nchannels); |
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dolog ("frequency | %10d | %10d\n", req->freq, obt->freq);
|
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dolog ("nfrags | %10d | %10d\n", req->nfrags, obt->nfrags);
|
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dolog ("fragsize | %10d | %10d\n",
|
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req->fragsize, obt->fragsize); |
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} |
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#endif
|
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|
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#ifdef USE_DSP_POLICY
|
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static int oss_get_version (int fd, int *version, const char *typ) |
| 245 |
{
|
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if (ioctl (fd, OSS_GETVERSION, &version)) {
|
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
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/*
|
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* Looks like atm (20100109) FreeBSD knows OSS_GETVERSION
|
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* since 7.x, but currently only on the mixer device (or in
|
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* the Linuxolator), and in the native version that part of
|
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* the code is in fact never reached so the ioctl fails anyway.
|
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* Until this is fixed, just check the errno and if its what
|
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* FreeBSD's sound drivers return atm assume they are new enough.
|
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*/
|
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if (errno == EINVAL) {
|
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*version = 0x040000;
|
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return 0; |
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} |
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#endif
|
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oss_logerr2 (errno, typ, "Failed to get OSS version\n");
|
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return -1; |
| 263 |
} |
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return 0; |
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} |
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#endif
|
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|
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static int oss_open (int in, struct oss_params *req, |
| 269 |
struct oss_params *obt, int *pfd) |
| 270 |
{
|
| 271 |
int fd;
|
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int oflags = conf.exclusive ? O_EXCL : 0; |
| 273 |
audio_buf_info abinfo; |
| 274 |
int fmt, freq, nchannels;
|
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int setfragment = 1; |
| 276 |
const char *dspname = in ? conf.devpath_in : conf.devpath_out; |
| 277 |
const char *typ = in ? "ADC" : "DAC"; |
| 278 |
|
| 279 |
/* Kludge needed to have working mmap on Linux */
|
| 280 |
oflags |= conf.try_mmap ? O_RDWR : (in ? O_RDONLY : O_WRONLY); |
| 281 |
|
| 282 |
fd = open (dspname, oflags | O_NONBLOCK); |
| 283 |
if (-1 == fd) { |
| 284 |
oss_logerr2 (errno, typ, "Failed to open `%s'\n", dspname);
|
| 285 |
return -1; |
| 286 |
} |
| 287 |
|
| 288 |
freq = req->freq; |
| 289 |
nchannels = req->nchannels; |
| 290 |
fmt = req->fmt; |
| 291 |
|
| 292 |
if (ioctl (fd, SNDCTL_DSP_SAMPLESIZE, &fmt)) {
|
| 293 |
oss_logerr2 (errno, typ, "Failed to set sample size %d\n", req->fmt);
|
| 294 |
goto err;
|
| 295 |
} |
| 296 |
|
| 297 |
if (ioctl (fd, SNDCTL_DSP_CHANNELS, &nchannels)) {
|
| 298 |
oss_logerr2 (errno, typ, "Failed to set number of channels %d\n",
|
| 299 |
req->nchannels); |
| 300 |
goto err;
|
| 301 |
} |
| 302 |
|
| 303 |
if (ioctl (fd, SNDCTL_DSP_SPEED, &freq)) {
|
| 304 |
oss_logerr2 (errno, typ, "Failed to set frequency %d\n", req->freq);
|
| 305 |
goto err;
|
| 306 |
} |
| 307 |
|
| 308 |
if (ioctl (fd, SNDCTL_DSP_NONBLOCK, NULL)) { |
| 309 |
oss_logerr2 (errno, typ, "Failed to set non-blocking mode\n");
|
| 310 |
goto err;
|
| 311 |
} |
| 312 |
|
| 313 |
#ifdef USE_DSP_POLICY
|
| 314 |
if (conf.policy >= 0) { |
| 315 |
int version;
|
| 316 |
|
| 317 |
if (!oss_get_version (fd, &version, typ)) {
|
| 318 |
if (conf.debug) {
|
| 319 |
dolog ("OSS version = %#x\n", version);
|
| 320 |
} |
| 321 |
|
| 322 |
if (version >= 0x040000) { |
| 323 |
int policy = conf.policy;
|
| 324 |
if (ioctl (fd, SNDCTL_DSP_POLICY, &policy)) {
|
| 325 |
oss_logerr2 (errno, typ, |
| 326 |
"Failed to set timing policy to %d\n",
|
| 327 |
conf.policy); |
| 328 |
goto err;
|
| 329 |
} |
| 330 |
setfragment = 0;
|
| 331 |
} |
| 332 |
} |
| 333 |
} |
| 334 |
#endif
|
| 335 |
|
| 336 |
if (setfragment) {
|
| 337 |
int mmmmssss = (req->nfrags << 16) | ctz32 (req->fragsize); |
| 338 |
if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) {
|
| 339 |
oss_logerr2 (errno, typ, "Failed to set buffer length (%d, %d)\n",
|
| 340 |
req->nfrags, req->fragsize); |
| 341 |
goto err;
|
| 342 |
} |
| 343 |
} |
| 344 |
|
| 345 |
if (ioctl (fd, in ? SNDCTL_DSP_GETISPACE : SNDCTL_DSP_GETOSPACE, &abinfo)) {
|
| 346 |
oss_logerr2 (errno, typ, "Failed to get buffer length\n");
|
| 347 |
goto err;
|
| 348 |
} |
| 349 |
|
| 350 |
if (!abinfo.fragstotal || !abinfo.fragsize) {
|
| 351 |
AUD_log (AUDIO_CAP, "Returned bogus buffer information(%d, %d) for %s\n",
|
| 352 |
abinfo.fragstotal, abinfo.fragsize, typ); |
| 353 |
goto err;
|
| 354 |
} |
| 355 |
|
| 356 |
obt->fmt = fmt; |
| 357 |
obt->nchannels = nchannels; |
| 358 |
obt->freq = freq; |
| 359 |
obt->nfrags = abinfo.fragstotal; |
| 360 |
obt->fragsize = abinfo.fragsize; |
| 361 |
*pfd = fd; |
| 362 |
|
| 363 |
#ifdef DEBUG_MISMATCHES
|
| 364 |
if ((req->fmt != obt->fmt) ||
|
| 365 |
(req->nchannels != obt->nchannels) || |
| 366 |
(req->freq != obt->freq) || |
| 367 |
(req->fragsize != obt->fragsize) || |
| 368 |
(req->nfrags != obt->nfrags)) {
|
| 369 |
dolog ("Audio parameters mismatch\n");
|
| 370 |
oss_dump_info (req, obt); |
| 371 |
} |
| 372 |
#endif
|
| 373 |
|
| 374 |
#ifdef DEBUG
|
| 375 |
oss_dump_info (req, obt); |
| 376 |
#endif
|
| 377 |
return 0; |
| 378 |
|
| 379 |
err:
|
| 380 |
oss_anal_close (&fd); |
| 381 |
return -1; |
| 382 |
} |
| 383 |
|
| 384 |
static void oss_write_pending (OSSVoiceOut *oss) |
| 385 |
{
|
| 386 |
HWVoiceOut *hw = &oss->hw; |
| 387 |
|
| 388 |
if (oss->mmapped) {
|
| 389 |
return;
|
| 390 |
} |
| 391 |
|
| 392 |
while (oss->pending) {
|
| 393 |
int samples_written;
|
| 394 |
ssize_t bytes_written; |
| 395 |
int samples_till_end = hw->samples - oss->wpos;
|
| 396 |
int samples_to_write = audio_MIN (oss->pending, samples_till_end);
|
| 397 |
int bytes_to_write = samples_to_write << hw->info.shift;
|
| 398 |
void *pcm = advance (oss->pcm_buf, oss->wpos << hw->info.shift);
|
| 399 |
|
| 400 |
bytes_written = write (oss->fd, pcm, bytes_to_write); |
| 401 |
if (bytes_written < 0) { |
| 402 |
if (errno != EAGAIN) {
|
| 403 |
oss_logerr (errno, "failed to write %d bytes\n",
|
| 404 |
bytes_to_write); |
| 405 |
} |
| 406 |
break;
|
| 407 |
} |
| 408 |
|
| 409 |
if (bytes_written & hw->info.align) {
|
| 410 |
dolog ("misaligned write asked for %d, but got %zd\n",
|
| 411 |
bytes_to_write, bytes_written); |
| 412 |
return;
|
| 413 |
} |
| 414 |
|
| 415 |
samples_written = bytes_written >> hw->info.shift; |
| 416 |
oss->pending -= samples_written; |
| 417 |
oss->wpos = (oss->wpos + samples_written) % hw->samples; |
| 418 |
if (bytes_written - bytes_to_write) {
|
| 419 |
break;
|
| 420 |
} |
| 421 |
} |
| 422 |
} |
| 423 |
|
| 424 |
static int oss_run_out (HWVoiceOut *hw, int live) |
| 425 |
{
|
| 426 |
OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| 427 |
int err, decr;
|
| 428 |
struct audio_buf_info abinfo;
|
| 429 |
struct count_info cntinfo;
|
| 430 |
int bufsize;
|
| 431 |
|
| 432 |
bufsize = hw->samples << hw->info.shift; |
| 433 |
|
| 434 |
if (oss->mmapped) {
|
| 435 |
int bytes, pos;
|
| 436 |
|
| 437 |
err = ioctl (oss->fd, SNDCTL_DSP_GETOPTR, &cntinfo); |
| 438 |
if (err < 0) { |
| 439 |
oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n");
|
| 440 |
return 0; |
| 441 |
} |
| 442 |
|
| 443 |
pos = hw->rpos << hw->info.shift; |
| 444 |
bytes = audio_ring_dist (cntinfo.ptr, pos, bufsize); |
| 445 |
decr = audio_MIN (bytes >> hw->info.shift, live); |
| 446 |
} |
| 447 |
else {
|
| 448 |
err = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &abinfo); |
| 449 |
if (err < 0) { |
| 450 |
oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n");
|
| 451 |
return 0; |
| 452 |
} |
| 453 |
|
| 454 |
if (abinfo.bytes > bufsize) {
|
| 455 |
if (conf.debug) {
|
| 456 |
dolog ("warning: Invalid available size, size=%d bufsize=%d\n"
|
| 457 |
"please report your OS/audio hw to av1474@comtv.ru\n",
|
| 458 |
abinfo.bytes, bufsize); |
| 459 |
} |
| 460 |
abinfo.bytes = bufsize; |
| 461 |
} |
| 462 |
|
| 463 |
if (abinfo.bytes < 0) { |
| 464 |
if (conf.debug) {
|
| 465 |
dolog ("warning: Invalid available size, size=%d bufsize=%d\n",
|
| 466 |
abinfo.bytes, bufsize); |
| 467 |
} |
| 468 |
return 0; |
| 469 |
} |
| 470 |
|
| 471 |
decr = audio_MIN (abinfo.bytes >> hw->info.shift, live); |
| 472 |
if (!decr) {
|
| 473 |
return 0; |
| 474 |
} |
| 475 |
} |
| 476 |
|
| 477 |
decr = audio_pcm_hw_clip_out (hw, oss->pcm_buf, decr, oss->pending); |
| 478 |
oss->pending += decr; |
| 479 |
oss_write_pending (oss); |
| 480 |
|
| 481 |
return decr;
|
| 482 |
} |
| 483 |
|
| 484 |
static void oss_fini_out (HWVoiceOut *hw) |
| 485 |
{
|
| 486 |
int err;
|
| 487 |
OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| 488 |
|
| 489 |
ldebug ("oss_fini\n");
|
| 490 |
oss_anal_close (&oss->fd); |
| 491 |
|
| 492 |
if (oss->pcm_buf) {
|
| 493 |
if (oss->mmapped) {
|
| 494 |
err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); |
| 495 |
if (err) {
|
| 496 |
oss_logerr (errno, "Failed to unmap buffer %p, size %d\n",
|
| 497 |
oss->pcm_buf, hw->samples << hw->info.shift); |
| 498 |
} |
| 499 |
} |
| 500 |
else {
|
| 501 |
qemu_free (oss->pcm_buf); |
| 502 |
} |
| 503 |
oss->pcm_buf = NULL;
|
| 504 |
} |
| 505 |
} |
| 506 |
|
| 507 |
static int oss_init_out (HWVoiceOut *hw, struct audsettings *as) |
| 508 |
{
|
| 509 |
OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| 510 |
struct oss_params req, obt;
|
| 511 |
int endianness;
|
| 512 |
int err;
|
| 513 |
int fd;
|
| 514 |
audfmt_e effective_fmt; |
| 515 |
struct audsettings obt_as;
|
| 516 |
|
| 517 |
oss->fd = -1;
|
| 518 |
|
| 519 |
req.fmt = aud_to_ossfmt (as->fmt); |
| 520 |
req.freq = as->freq; |
| 521 |
req.nchannels = as->nchannels; |
| 522 |
req.fragsize = conf.fragsize; |
| 523 |
req.nfrags = conf.nfrags; |
| 524 |
|
| 525 |
if (oss_open (0, &req, &obt, &fd)) { |
| 526 |
return -1; |
| 527 |
} |
| 528 |
|
| 529 |
err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); |
| 530 |
if (err) {
|
| 531 |
oss_anal_close (&fd); |
| 532 |
return -1; |
| 533 |
} |
| 534 |
|
| 535 |
obt_as.freq = obt.freq; |
| 536 |
obt_as.nchannels = obt.nchannels; |
| 537 |
obt_as.fmt = effective_fmt; |
| 538 |
obt_as.endianness = endianness; |
| 539 |
|
| 540 |
audio_pcm_init_info (&hw->info, &obt_as); |
| 541 |
oss->nfrags = obt.nfrags; |
| 542 |
oss->fragsize = obt.fragsize; |
| 543 |
|
| 544 |
if (obt.nfrags * obt.fragsize & hw->info.align) {
|
| 545 |
dolog ("warning: Misaligned DAC buffer, size %d, alignment %d\n",
|
| 546 |
obt.nfrags * obt.fragsize, hw->info.align + 1);
|
| 547 |
} |
| 548 |
|
| 549 |
hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; |
| 550 |
|
| 551 |
oss->mmapped = 0;
|
| 552 |
if (conf.try_mmap) {
|
| 553 |
oss->pcm_buf = mmap ( |
| 554 |
NULL,
|
| 555 |
hw->samples << hw->info.shift, |
| 556 |
PROT_READ | PROT_WRITE, |
| 557 |
MAP_SHARED, |
| 558 |
fd, |
| 559 |
0
|
| 560 |
); |
| 561 |
if (oss->pcm_buf == MAP_FAILED) {
|
| 562 |
oss_logerr (errno, "Failed to map %d bytes of DAC\n",
|
| 563 |
hw->samples << hw->info.shift); |
| 564 |
} |
| 565 |
else {
|
| 566 |
int err;
|
| 567 |
int trig = 0; |
| 568 |
if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| 569 |
oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n");
|
| 570 |
} |
| 571 |
else {
|
| 572 |
trig = PCM_ENABLE_OUTPUT; |
| 573 |
if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| 574 |
oss_logerr ( |
| 575 |
errno, |
| 576 |
"SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
|
| 577 |
); |
| 578 |
} |
| 579 |
else {
|
| 580 |
oss->mmapped = 1;
|
| 581 |
} |
| 582 |
} |
| 583 |
|
| 584 |
if (!oss->mmapped) {
|
| 585 |
err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); |
| 586 |
if (err) {
|
| 587 |
oss_logerr (errno, "Failed to unmap buffer %p size %d\n",
|
| 588 |
oss->pcm_buf, hw->samples << hw->info.shift); |
| 589 |
} |
| 590 |
} |
| 591 |
} |
| 592 |
} |
| 593 |
|
| 594 |
if (!oss->mmapped) {
|
| 595 |
oss->pcm_buf = audio_calloc ( |
| 596 |
AUDIO_FUNC, |
| 597 |
hw->samples, |
| 598 |
1 << hw->info.shift
|
| 599 |
); |
| 600 |
if (!oss->pcm_buf) {
|
| 601 |
dolog ( |
| 602 |
"Could not allocate DAC buffer (%d samples, each %d bytes)\n",
|
| 603 |
hw->samples, |
| 604 |
1 << hw->info.shift
|
| 605 |
); |
| 606 |
oss_anal_close (&fd); |
| 607 |
return -1; |
| 608 |
} |
| 609 |
} |
| 610 |
|
| 611 |
oss->fd = fd; |
| 612 |
return 0; |
| 613 |
} |
| 614 |
|
| 615 |
static int oss_ctl_out (HWVoiceOut *hw, int cmd, ...) |
| 616 |
{
|
| 617 |
int trig;
|
| 618 |
OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| 619 |
|
| 620 |
switch (cmd) {
|
| 621 |
case VOICE_ENABLE:
|
| 622 |
{
|
| 623 |
va_list ap; |
| 624 |
int poll_mode;
|
| 625 |
|
| 626 |
va_start (ap, cmd); |
| 627 |
poll_mode = va_arg (ap, int);
|
| 628 |
va_end (ap); |
| 629 |
|
| 630 |
ldebug ("enabling voice\n");
|
| 631 |
if (poll_mode && oss_poll_out (hw)) {
|
| 632 |
poll_mode = 0;
|
| 633 |
} |
| 634 |
hw->poll_mode = poll_mode; |
| 635 |
|
| 636 |
if (!oss->mmapped) {
|
| 637 |
return 0; |
| 638 |
} |
| 639 |
|
| 640 |
audio_pcm_info_clear_buf (&hw->info, oss->pcm_buf, hw->samples); |
| 641 |
trig = PCM_ENABLE_OUTPUT; |
| 642 |
if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| 643 |
oss_logerr ( |
| 644 |
errno, |
| 645 |
"SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
|
| 646 |
); |
| 647 |
return -1; |
| 648 |
} |
| 649 |
} |
| 650 |
break;
|
| 651 |
|
| 652 |
case VOICE_DISABLE:
|
| 653 |
if (hw->poll_mode) {
|
| 654 |
qemu_set_fd_handler (oss->fd, NULL, NULL, NULL); |
| 655 |
hw->poll_mode = 0;
|
| 656 |
} |
| 657 |
|
| 658 |
if (!oss->mmapped) {
|
| 659 |
return 0; |
| 660 |
} |
| 661 |
|
| 662 |
ldebug ("disabling voice\n");
|
| 663 |
trig = 0;
|
| 664 |
if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| 665 |
oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n");
|
| 666 |
return -1; |
| 667 |
} |
| 668 |
break;
|
| 669 |
} |
| 670 |
return 0; |
| 671 |
} |
| 672 |
|
| 673 |
static int oss_init_in (HWVoiceIn *hw, struct audsettings *as) |
| 674 |
{
|
| 675 |
OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| 676 |
struct oss_params req, obt;
|
| 677 |
int endianness;
|
| 678 |
int err;
|
| 679 |
int fd;
|
| 680 |
audfmt_e effective_fmt; |
| 681 |
struct audsettings obt_as;
|
| 682 |
|
| 683 |
oss->fd = -1;
|
| 684 |
|
| 685 |
req.fmt = aud_to_ossfmt (as->fmt); |
| 686 |
req.freq = as->freq; |
| 687 |
req.nchannels = as->nchannels; |
| 688 |
req.fragsize = conf.fragsize; |
| 689 |
req.nfrags = conf.nfrags; |
| 690 |
if (oss_open (1, &req, &obt, &fd)) { |
| 691 |
return -1; |
| 692 |
} |
| 693 |
|
| 694 |
err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); |
| 695 |
if (err) {
|
| 696 |
oss_anal_close (&fd); |
| 697 |
return -1; |
| 698 |
} |
| 699 |
|
| 700 |
obt_as.freq = obt.freq; |
| 701 |
obt_as.nchannels = obt.nchannels; |
| 702 |
obt_as.fmt = effective_fmt; |
| 703 |
obt_as.endianness = endianness; |
| 704 |
|
| 705 |
audio_pcm_init_info (&hw->info, &obt_as); |
| 706 |
oss->nfrags = obt.nfrags; |
| 707 |
oss->fragsize = obt.fragsize; |
| 708 |
|
| 709 |
if (obt.nfrags * obt.fragsize & hw->info.align) {
|
| 710 |
dolog ("warning: Misaligned ADC buffer, size %d, alignment %d\n",
|
| 711 |
obt.nfrags * obt.fragsize, hw->info.align + 1);
|
| 712 |
} |
| 713 |
|
| 714 |
hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; |
| 715 |
oss->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
|
| 716 |
if (!oss->pcm_buf) {
|
| 717 |
dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n",
|
| 718 |
hw->samples, 1 << hw->info.shift);
|
| 719 |
oss_anal_close (&fd); |
| 720 |
return -1; |
| 721 |
} |
| 722 |
|
| 723 |
oss->fd = fd; |
| 724 |
return 0; |
| 725 |
} |
| 726 |
|
| 727 |
static void oss_fini_in (HWVoiceIn *hw) |
| 728 |
{
|
| 729 |
OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| 730 |
|
| 731 |
oss_anal_close (&oss->fd); |
| 732 |
|
| 733 |
if (oss->pcm_buf) {
|
| 734 |
qemu_free (oss->pcm_buf); |
| 735 |
oss->pcm_buf = NULL;
|
| 736 |
} |
| 737 |
} |
| 738 |
|
| 739 |
static int oss_run_in (HWVoiceIn *hw) |
| 740 |
{
|
| 741 |
OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| 742 |
int hwshift = hw->info.shift;
|
| 743 |
int i;
|
| 744 |
int live = audio_pcm_hw_get_live_in (hw);
|
| 745 |
int dead = hw->samples - live;
|
| 746 |
size_t read_samples = 0;
|
| 747 |
struct {
|
| 748 |
int add;
|
| 749 |
int len;
|
| 750 |
} bufs[2] = {
|
| 751 |
{ .add = hw->wpos, .len = 0 },
|
| 752 |
{ .add = 0, .len = 0 }
|
| 753 |
}; |
| 754 |
|
| 755 |
if (!dead) {
|
| 756 |
return 0; |
| 757 |
} |
| 758 |
|
| 759 |
if (hw->wpos + dead > hw->samples) {
|
| 760 |
bufs[0].len = (hw->samples - hw->wpos) << hwshift;
|
| 761 |
bufs[1].len = (dead - (hw->samples - hw->wpos)) << hwshift;
|
| 762 |
} |
| 763 |
else {
|
| 764 |
bufs[0].len = dead << hwshift;
|
| 765 |
} |
| 766 |
|
| 767 |
for (i = 0; i < 2; ++i) { |
| 768 |
ssize_t nread; |
| 769 |
|
| 770 |
if (bufs[i].len) {
|
| 771 |
void *p = advance (oss->pcm_buf, bufs[i].add << hwshift);
|
| 772 |
nread = read (oss->fd, p, bufs[i].len); |
| 773 |
|
| 774 |
if (nread > 0) { |
| 775 |
if (nread & hw->info.align) {
|
| 776 |
dolog ("warning: Misaligned read %zd (requested %d), "
|
| 777 |
"alignment %d\n", nread, bufs[i].add << hwshift,
|
| 778 |
hw->info.align + 1);
|
| 779 |
} |
| 780 |
read_samples += nread >> hwshift; |
| 781 |
hw->conv (hw->conv_buf + bufs[i].add, p, nread >> hwshift, |
| 782 |
&nominal_volume); |
| 783 |
} |
| 784 |
|
| 785 |
if (bufs[i].len - nread) {
|
| 786 |
if (nread == -1) { |
| 787 |
switch (errno) {
|
| 788 |
case EINTR:
|
| 789 |
case EAGAIN:
|
| 790 |
break;
|
| 791 |
default:
|
| 792 |
oss_logerr ( |
| 793 |
errno, |
| 794 |
"Failed to read %d bytes of audio (to %p)\n",
|
| 795 |
bufs[i].len, p |
| 796 |
); |
| 797 |
break;
|
| 798 |
} |
| 799 |
} |
| 800 |
break;
|
| 801 |
} |
| 802 |
} |
| 803 |
} |
| 804 |
|
| 805 |
hw->wpos = (hw->wpos + read_samples) % hw->samples; |
| 806 |
return read_samples;
|
| 807 |
} |
| 808 |
|
| 809 |
static int oss_read (SWVoiceIn *sw, void *buf, int size) |
| 810 |
{
|
| 811 |
return audio_pcm_sw_read (sw, buf, size);
|
| 812 |
} |
| 813 |
|
| 814 |
static int oss_ctl_in (HWVoiceIn *hw, int cmd, ...) |
| 815 |
{
|
| 816 |
OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| 817 |
|
| 818 |
switch (cmd) {
|
| 819 |
case VOICE_ENABLE:
|
| 820 |
{
|
| 821 |
va_list ap; |
| 822 |
int poll_mode;
|
| 823 |
|
| 824 |
va_start (ap, cmd); |
| 825 |
poll_mode = va_arg (ap, int);
|
| 826 |
va_end (ap); |
| 827 |
|
| 828 |
if (poll_mode && oss_poll_in (hw)) {
|
| 829 |
poll_mode = 0;
|
| 830 |
} |
| 831 |
hw->poll_mode = poll_mode; |
| 832 |
} |
| 833 |
break;
|
| 834 |
|
| 835 |
case VOICE_DISABLE:
|
| 836 |
if (hw->poll_mode) {
|
| 837 |
hw->poll_mode = 0;
|
| 838 |
qemu_set_fd_handler (oss->fd, NULL, NULL, NULL); |
| 839 |
} |
| 840 |
break;
|
| 841 |
} |
| 842 |
return 0; |
| 843 |
} |
| 844 |
|
| 845 |
static void *oss_audio_init (void) |
| 846 |
{
|
| 847 |
return &conf;
|
| 848 |
} |
| 849 |
|
| 850 |
static void oss_audio_fini (void *opaque) |
| 851 |
{
|
| 852 |
(void) opaque;
|
| 853 |
} |
| 854 |
|
| 855 |
static struct audio_option oss_options[] = { |
| 856 |
{
|
| 857 |
.name = "FRAGSIZE",
|
| 858 |
.tag = AUD_OPT_INT, |
| 859 |
.valp = &conf.fragsize, |
| 860 |
.descr = "Fragment size in bytes"
|
| 861 |
}, |
| 862 |
{
|
| 863 |
.name = "NFRAGS",
|
| 864 |
.tag = AUD_OPT_INT, |
| 865 |
.valp = &conf.nfrags, |
| 866 |
.descr = "Number of fragments"
|
| 867 |
}, |
| 868 |
{
|
| 869 |
.name = "MMAP",
|
| 870 |
.tag = AUD_OPT_BOOL, |
| 871 |
.valp = &conf.try_mmap, |
| 872 |
.descr = "Try using memory mapped access"
|
| 873 |
}, |
| 874 |
{
|
| 875 |
.name = "DAC_DEV",
|
| 876 |
.tag = AUD_OPT_STR, |
| 877 |
.valp = &conf.devpath_out, |
| 878 |
.descr = "Path to DAC device"
|
| 879 |
}, |
| 880 |
{
|
| 881 |
.name = "ADC_DEV",
|
| 882 |
.tag = AUD_OPT_STR, |
| 883 |
.valp = &conf.devpath_in, |
| 884 |
.descr = "Path to ADC device"
|
| 885 |
}, |
| 886 |
{
|
| 887 |
.name = "EXCLUSIVE",
|
| 888 |
.tag = AUD_OPT_BOOL, |
| 889 |
.valp = &conf.exclusive, |
| 890 |
.descr = "Open device in exclusive mode (vmix wont work)"
|
| 891 |
}, |
| 892 |
#ifdef USE_DSP_POLICY
|
| 893 |
{
|
| 894 |
.name = "POLICY",
|
| 895 |
.tag = AUD_OPT_INT, |
| 896 |
.valp = &conf.policy, |
| 897 |
.descr = "Set the timing policy of the device, -1 to use fragment mode",
|
| 898 |
}, |
| 899 |
#endif
|
| 900 |
{
|
| 901 |
.name = "DEBUG",
|
| 902 |
.tag = AUD_OPT_BOOL, |
| 903 |
.valp = &conf.debug, |
| 904 |
.descr = "Turn on some debugging messages"
|
| 905 |
}, |
| 906 |
{ /* End of list */ }
|
| 907 |
}; |
| 908 |
|
| 909 |
static struct audio_pcm_ops oss_pcm_ops = { |
| 910 |
.init_out = oss_init_out, |
| 911 |
.fini_out = oss_fini_out, |
| 912 |
.run_out = oss_run_out, |
| 913 |
.write = oss_write, |
| 914 |
.ctl_out = oss_ctl_out, |
| 915 |
|
| 916 |
.init_in = oss_init_in, |
| 917 |
.fini_in = oss_fini_in, |
| 918 |
.run_in = oss_run_in, |
| 919 |
.read = oss_read, |
| 920 |
.ctl_in = oss_ctl_in |
| 921 |
}; |
| 922 |
|
| 923 |
struct audio_driver oss_audio_driver = {
|
| 924 |
.name = "oss",
|
| 925 |
.descr = "OSS http://www.opensound.com",
|
| 926 |
.options = oss_options, |
| 927 |
.init = oss_audio_init, |
| 928 |
.fini = oss_audio_fini, |
| 929 |
.pcm_ops = &oss_pcm_ops, |
| 930 |
.can_be_default = 1,
|
| 931 |
.max_voices_out = INT_MAX, |
| 932 |
.max_voices_in = INT_MAX, |
| 933 |
.voice_size_out = sizeof (OSSVoiceOut),
|
| 934 |
.voice_size_in = sizeof (OSSVoiceIn)
|
| 935 |
}; |