ReactOS  0.4.14-dev-50-g13bb5e2
rdpsnd_libao.c File Reference
#include "rdesktop.h"
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <ao/ao.h>
#include <sys/time.h>
Include dependency graph for rdpsnd_libao.c:

Go to the source code of this file.

Classes

struct  audio_packet
 

Macros

#define MAX_QUEUE   10
 
#define WAVEOUTBUF   16
 

Functions

BOOL wave_out_open (void)
 
void wave_out_close (void)
 
BOOL wave_out_format_supported (WAVEFORMATEX *pwfx)
 
BOOL wave_out_set_format (WAVEFORMATEX *pwfx)
 
void wave_out_volume (uint16 left, uint16 right)
 
void wave_out_write (STREAM s, uint16 tick, uint8 index)
 
void wave_out_play (void)
 

Variables

int This dsp_
 
ao_device * o_device = NULL
 
int default_driver
 
int g_samplerate
 
int This channels
 
BOOL This dsp_bu = False
 
static BOOL g_reopened
 
static short g_samplewidth
 
static struct audio_packet packet_queue [MAX_QUEUE]
 
static unsigned int queue_hi
 
static unsigned int queue_lo
 

Macro Definition Documentation

◆ MAX_QUEUE

#define MAX_QUEUE   10

Definition at line 30 of file rdpsnd_libao.c.

◆ WAVEOUTBUF

#define WAVEOUTBUF   16

Definition at line 31 of file rdpsnd_libao.c.

Function Documentation

◆ wave_out_close()

void wave_out_close ( void  )

Definition at line 80 of file rdpsnd_libao.c.

81 {
82  /* Ack all remaining packets */
83  while (queue_lo != queue_hi)
84  {
86  free(packet_queue[queue_lo].s.data);
87  queue_lo = (queue_lo + 1) % MAX_QUEUE;
88  }
89 
90  if (o_device != NULL)
91  ao_close(o_device);
92 
93  ao_shutdown();
94 }
#define MAX_QUEUE
Definition: rdpsnd_libao.c:30
static struct audio_packet packet_queue[MAX_QUEUE]
#define free
Definition: debug_ros.c:5
static unsigned int queue_hi
Definition: rdpsnd_libao.c:48
static unsigned int queue_lo
Definition: rdpsnd_libao.c:48
smooth NULL
Definition: ftsmooth.c:416
GLuint index
Definition: glext.h:6031
GLdouble s
Definition: gl.h:2039
void rdpsnd_send_completion(RDPCLIENT *This, uint16 tick, uint8 packet_index)
Definition: rdpsnd.c:55
ao_device * o_device
Definition: rdpsnd_libao.c:34

Referenced by rdpsnd_process(), and rdpsnd_process_negotiate().

◆ wave_out_format_supported()

BOOL wave_out_format_supported ( WAVEFORMATEX pwfx)

Definition at line 97 of file rdpsnd_libao.c.

98 {
99  if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
100  return False;
101  if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
102  return False;
103  if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
104  return False;
105  /* The only common denominator between libao output drivers is a sample-rate of
106  44100, we need to upsample 22050 to it */
107  if ((pwfx->nSamplesPerSec != 44100) && (pwfx->nSamplesPerSec != 22050))
108  return False;
109 
110  return True;
111 }
#define WAVE_FORMAT_PCM
Definition: constants.h:425
WORD wBitsPerSample
Definition: audioclient.idl:45
DWORD nSamplesPerSec
Definition: audioclient.idl:42
#define True
Definition: types.h:24
#define False
Definition: types.h:25

Referenced by rdpsnd_process_negotiate().

◆ wave_out_open()

BOOL wave_out_open ( void  )

Definition at line 51 of file rdpsnd_libao.c.

52 {
53  ao_sample_format format;
54 
55  ao_initialize();
56  default_driver = ao_default_driver_id();
57 
58  format.bits = 16;
59  format.channels = 2;
60  This->channels = 2;
61  format.rate = 44100;
62  g_samplerate = 44100;
63  format.byte_format = AO_FMT_LITTLE;
64 
65  o_device = ao_open_live(default_driver, &format, NULL);
66  if (o_device == NULL)
67  {
68  return False;
69  }
70 
71  This->dsp_ = 0;
72  queue_lo = queue_hi = 0;
73 
74  g_reopened = True;
75 
76  return True;
77 }
static unsigned int queue_hi
Definition: rdpsnd_libao.c:48
int g_samplerate
Definition: rdpsnd_libao.c:36
static unsigned int queue_lo
Definition: rdpsnd_libao.c:48
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: gl.h:1546
int default_driver
Definition: rdpsnd_libao.c:35
smooth NULL
Definition: ftsmooth.c:416
#define True
Definition: types.h:24
#define False
Definition: types.h:25
static BOOL g_reopened
Definition: rdpsnd_libao.c:39
ao_device * o_device
Definition: rdpsnd_libao.c:34

Referenced by rdpsnd_process(), and rdpsnd_process_negotiate().

◆ wave_out_play()

void wave_out_play ( void  )

Definition at line 174 of file rdpsnd_libao.c.

175 {
176  struct audio_packet *packet;
177  STREAM out;
178  char outbuf[WAVEOUTBUF];
179  int offset, len, i;
180  static long prev_s, prev_us;
181  unsigned int duration;
182  struct timeval tv;
183  int next_tick;
184 
185  if (g_reopened)
186  {
187  g_reopened = False;
188  gettimeofday(&tv, NULL);
189  prev_s = tv.tv_sec;
190  prev_us = tv.tv_usec;
191  }
192 
193  if (queue_lo == queue_hi)
194  {
195  This->dsp_bu = 0;
196  return;
197  }
198 
200  out = &packet->s;
201 
202  if (((queue_lo + 1) % MAX_QUEUE) != queue_hi)
203  {
204  next_tick = packet_queue[(queue_lo + 1) % MAX_QUEUE].tick;
205  }
206  else
207  {
208  next_tick = (packet->tick + 65535) % 65536;
209  }
210 
211  len = 0;
212 
213  if (g_samplerate == 22050)
214  {
215  /* Resample to 44100 */
216  for (i = 0; (i < ((WAVEOUTBUF / 4) * (3 - g_samplewidth))) && (out->p < out->end);
217  i++)
218  {
219  /* On a stereo-channel we must make sure that left and right
220  does not get mixed up, so we need to expand the sample-
221  data with channels in mind: 1234 -> 12123434
222  If we have a mono-channel, we can expand the data by simply
223  doubling the sample-data: 1234 -> 11223344 */
224  if (This->channels == 2)
225  offset = ((i * 2) - (i & 1)) * g_samplewidth;
226  else
227  offset = (i * 2) * g_samplewidth;
228 
230  memcpy(&outbuf[This->channels * g_samplewidth + offset], out->p, g_samplewidth);
231 
232  out->p += g_samplewidth;
233  len += 2 * g_samplewidth;
234  }
235  }
236  else
237  {
238  len = (WAVEOUTBUF > (out->end - out->p)) ? (out->end - out->p) : WAVEOUTBUF;
239  memcpy(outbuf, out->p, len);
240  out->p += len;
241  }
242 
243  ao_play(o_device, outbuf, len);
244 
245  gettimeofday(&tv, NULL);
246 
247  duration = ((tv.tv_sec - prev_s) * 1000000 + (tv.tv_usec - prev_us)) / 1000;
248 
249  if (packet->tick > next_tick)
250  next_tick += 65536;
251 
252  if ((out->p == out->end) || duration > next_tick - packet->tick + 500)
253  {
254  prev_s = tv.tv_sec;
255  prev_us = tv.tv_usec;
256 
257  if (abs((next_tick - packet->tick) - duration) > 20)
258  {
259  DEBUG(("duration: %d, calc: %d, ", duration, next_tick - packet->tick));
260  DEBUG(("last: %d, is: %d, should: %d\n", packet->tick,
261  (packet->tick + duration) % 65536, next_tick % 65536));
262  }
263 
264  /* Until all drivers are using the windows sound-ticks, we need to
265  substract the 50 ticks added later by rdpsnd.c */
266  rdpsnd_send_completion(((packet->tick + duration) % 65536) - 50, packet->index);
267  free(out->data);
268  queue_lo = (queue_lo + 1) % MAX_QUEUE;
269  }
270 
271  This->dsp_bu = 1;
272  return;
273 }
#define MAX_QUEUE
Definition: rdpsnd_libao.c:30
#define abs(i)
Definition: fconv.c:206
#define WAVEOUTBUF
Definition: rdpsnd_libao.c:31
static struct audio_packet packet_queue[MAX_QUEUE]
UCHAR packet[_PAGE_SIZE]
Definition: serial.c:53
#define free
Definition: debug_ros.c:5
GLintptr offset
Definition: glext.h:5920
static unsigned int queue_hi
Definition: rdpsnd_libao.c:48
int g_samplerate
Definition: rdpsnd_libao.c:36
static unsigned int queue_lo
Definition: rdpsnd_libao.c:48
#define gettimeofday(tv, tz)
Definition: adns_win32.h:159
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
smooth NULL
Definition: ftsmooth.c:416
Definition: dhcpd.h:135
#define False
Definition: types.h:25
static BOOL g_reopened
Definition: rdpsnd_libao.c:39
static FILE * out
Definition: regtests2xml.c:44
Definition: parse.h:22
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
GLenum GLsizei len
Definition: glext.h:6722
void rdpsnd_send_completion(RDPCLIENT *This, uint16 tick, uint8 packet_index)
Definition: rdpsnd.c:55
ao_device * o_device
Definition: rdpsnd_libao.c:34
#define DEBUG(args)
Definition: rdesktop.h:129
static short g_samplewidth
Definition: rdpsnd_libao.c:40
uchar outbuf[M_BLOCK_OUT]
Definition: unzcrash.c:41

Referenced by QMyMainWindow::soundSend(), ui_select(), and wave_out_write().

◆ wave_out_set_format()

BOOL wave_out_set_format ( WAVEFORMATEX pwfx)

Definition at line 114 of file rdpsnd_libao.c.

115 {
116  ao_sample_format format;
117 
118  format.bits = pwfx->wBitsPerSample;
119  format.channels = pwfx->nChannels;
120  This->channels = pwfx->nChannels;
121  format.rate = 44100;
123  format.byte_format = AO_FMT_LITTLE;
124 
125  g_samplewidth = pwfx->wBitsPerSample / 8;
126 
127  if (o_device != NULL)
128  ao_close(o_device);
129 
130  o_device = ao_open_live(default_driver, &format, NULL);
131  if (o_device == NULL)
132  {
133  return False;
134  }
135 
136  g_reopened = True;
137 
138  return True;
139 }
int g_samplerate
Definition: rdpsnd_libao.c:36
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: gl.h:1546
int default_driver
Definition: rdpsnd_libao.c:35
WORD wBitsPerSample
Definition: audioclient.idl:45
smooth NULL
Definition: ftsmooth.c:416
DWORD nSamplesPerSec
Definition: audioclient.idl:42
#define True
Definition: types.h:24
#define False
Definition: types.h:25
static BOOL g_reopened
Definition: rdpsnd_libao.c:39
ao_device * o_device
Definition: rdpsnd_libao.c:34
static short g_samplewidth
Definition: rdpsnd_libao.c:40

Referenced by rdpsnd_process().

◆ wave_out_volume()

void wave_out_volume ( uint16  left,
uint16  right 
)

Definition at line 142 of file rdpsnd_libao.c.

143 {
144  warning("volume changes not supported with libao-output\n");
145 }
#define warning(s)
Definition: debug.h:71

Referenced by rdpsnd_process().

◆ wave_out_write()

void wave_out_write ( STREAM  s,
uint16  tick,
uint8  index 
)

Definition at line 148 of file rdpsnd_libao.c.

149 {
151  unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE;
152 
153  if (next_hi == queue_lo)
154  {
155  error("No space to queue audio packet\n");
156  return;
157  }
158 
159  queue_hi = next_hi;
160 
161  packet->s = *s;
162  packet->tick = tick;
163  packet->index = index;
164  packet->s.p += 4;
165 
166  /* we steal the data buffer from s, give it a new one */
167  s->data = malloc(s->size);
168 
169  if (!This->dsp_bu)
170  wave_out_play();
171 }
#define MAX_QUEUE
Definition: rdpsnd_libao.c:30
static struct audio_packet packet_queue[MAX_QUEUE]
#define error(str)
Definition: mkdosfs.c:1605
static unsigned int queue_hi
Definition: rdpsnd_libao.c:48
static unsigned int queue_lo
Definition: rdpsnd_libao.c:48
Definition: dhcpd.h:135
void wave_out_play(void)
Definition: rdpsnd_libao.c:174
#define index(s, c)
Definition: various.h:29
GLdouble s
Definition: gl.h:2039
#define malloc
Definition: debug_ros.c:4
char data[MTU]
Definition: ipreceive.c:8

Referenced by rdpsnd_process().

Variable Documentation

◆ channels

◆ default_driver

int default_driver

Definition at line 35 of file rdpsnd_libao.c.

Referenced by wave_out_open(), and wave_out_set_format().

◆ dsp_

int This dsp_

Definition at line 33 of file rdpsnd_libao.c.

◆ dsp_bu

BOOL This dsp_bu = False

Definition at line 38 of file rdpsnd_libao.c.

◆ g_reopened

BOOL g_reopened
static

Definition at line 39 of file rdpsnd_libao.c.

Referenced by wave_out_open(), wave_out_play(), and wave_out_set_format().

◆ g_samplerate

int g_samplerate

Definition at line 36 of file rdpsnd_libao.c.

Referenced by wave_out_open(), wave_out_play(), and wave_out_set_format().

◆ g_samplewidth

short g_samplewidth
static

Definition at line 40 of file rdpsnd_libao.c.

Referenced by wave_out_play(), and wave_out_set_format().

◆ o_device

ao_device* o_device = NULL

Definition at line 34 of file rdpsnd_libao.c.

Referenced by wave_out_close(), wave_out_open(), wave_out_play(), and wave_out_set_format().

◆ packet_queue

◆ queue_hi

unsigned int queue_hi
static

Definition at line 48 of file rdpsnd_libao.c.

Referenced by wave_out_close(), wave_out_open(), wave_out_play(), and wave_out_write().

◆ queue_lo

unsigned int queue_lo
static

Definition at line 48 of file rdpsnd_libao.c.

Referenced by wave_out_close(), wave_out_open(), wave_out_play(), and wave_out_write().