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annotate Modules/linuxaudiodev.c @ 39940:dfd809dcf680 2.5

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Bug #1446043: correctly raise a LookupError if an encoding name given to encodings.search_function() contains a dot. (backport from rev. 52075)
author Georg Brandl <georg@python.org>
date Sat, 30 Sep 2006 11:22:35 +0000
parents 3fe3ccdf0155
children 0c36410c39e8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Hey Emacs, this is -*-C-*-
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2 ******************************************************************************
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3 * linuxaudiodev.c -- Linux audio device for python.
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4 *
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5 * Author : Peter Bosch
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6 * Created On : Thu Mar 2 21:10:33 2000
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7 * Status : Unknown, Use with caution!
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8 *
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9 * Unless other notices are present in any part of this file
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10 * explicitly claiming copyrights for other people and/or
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11 * organizations, the contents of this file is fully copyright
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12 * (C) 2000 Peter Bosch, all rights reserved.
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13 ******************************************************************************
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14 */
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15
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16 #include "Python.h"
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17 #include "structmember.h"
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18
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19 #ifdef HAVE_FCNTL_H
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20 #include <fcntl.h>
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21 #else
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22 #define O_RDONLY 00
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23 #define O_WRONLY 01
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24 #endif
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25
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26
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27 #include <sys/ioctl.h>
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28 #if defined(linux)
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29 #include <linux/soundcard.h>
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30
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31 typedef unsigned long uint32_t;
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32
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33 #elif defined(__FreeBSD__)
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34 #include <machine/soundcard.h>
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35
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36 #ifndef SNDCTL_DSP_CHANNELS
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37 #define SNDCTL_DSP_CHANNELS SOUND_PCM_WRITE_CHANNELS
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38 #endif
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39
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40 #endif
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41
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42 typedef struct {
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43 PyObject_HEAD
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44 int x_fd; /* The open file */
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45 int x_mode; /* file mode */
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46 int x_icount; /* Input count */
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47 int x_ocount; /* Output count */
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48 uint32_t x_afmts; /* Audio formats supported by hardware*/
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49 } lad_t;
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50
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51 /* XXX several format defined in soundcard.h are not supported,
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52 including _NE (native endian) options and S32 options
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53 */
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54
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55 static struct {
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56 int a_bps;
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57 uint32_t a_fmt;
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58 char *a_name;
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59 } audio_types[] = {
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60 { 8, AFMT_MU_LAW, "logarithmic mu-law 8-bit audio" },
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61 { 8, AFMT_A_LAW, "logarithmic A-law 8-bit audio" },
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62 { 8, AFMT_U8, "linear unsigned 8-bit audio" },
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63 { 8, AFMT_S8, "linear signed 8-bit audio" },
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64 { 16, AFMT_U16_BE, "linear unsigned 16-bit big-endian audio" },
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65 { 16, AFMT_U16_LE, "linear unsigned 16-bit little-endian audio" },
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66 { 16, AFMT_S16_BE, "linear signed 16-bit big-endian audio" },
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67 { 16, AFMT_S16_LE, "linear signed 16-bit little-endian audio" },
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68 { 16, AFMT_S16_NE, "linear signed 16-bit native-endian audio" },
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69 };
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70
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71 static int n_audio_types = sizeof(audio_types) / sizeof(audio_types[0]);
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72
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73 static PyTypeObject Ladtype;
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74
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75 static PyObject *LinuxAudioError;
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76
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77 static lad_t *
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78 newladobject(PyObject *arg)
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79 {
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80 lad_t *xp;
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81 int fd, afmts, imode;
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82 char *basedev = NULL;
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83 char *mode = NULL;
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84
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85 /* Two ways to call linuxaudiodev.open():
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86 open(device, mode) (for consistency with builtin open())
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87 open(mode) (for backwards compatibility)
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88 because the *first* argument is optional, parsing args is
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89 a wee bit tricky. */
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90 if (!PyArg_ParseTuple(arg, "s|s:open", &basedev, &mode))
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91 return NULL;
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92 if (mode == NULL) { /* only one arg supplied */
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93 mode = basedev;
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94 basedev = NULL;
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95 }
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96
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97 if (strcmp(mode, "r") == 0)
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98 imode = O_RDONLY;
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99 else if (strcmp(mode, "w") == 0)
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100 imode = O_WRONLY;
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101 else {
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102 PyErr_SetString(LinuxAudioError, "mode should be 'r' or 'w'");
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103 return NULL;
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104 }
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105
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106 /* Open the correct device. The base device name comes from the
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107 * AUDIODEV environment variable first, then /dev/dsp. The
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108 * control device tacks "ctl" onto the base device name.
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109 *
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110 * Note that the only difference between /dev/audio and /dev/dsp
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111 * is that the former uses logarithmic mu-law encoding and the
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112 * latter uses 8-bit unsigned encoding.
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113 */
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114
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115 if (basedev == NULL) { /* called with one arg */
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116 basedev = getenv("AUDIODEV");
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117 if (basedev == NULL) /* $AUDIODEV not set */
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118 basedev = "/dev/dsp";
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119 }
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120
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121 if ((fd = open(basedev, imode)) == -1) {
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122 PyErr_SetFromErrnoWithFilename(LinuxAudioError, basedev);
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123 return NULL;
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124 }
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125 if (imode == O_WRONLY && ioctl(fd, SNDCTL_DSP_NONBLOCK, NULL) == -1) {
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126 PyErr_SetFromErrnoWithFilename(LinuxAudioError, basedev);
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127 return NULL;
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128 }
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129 if (ioctl(fd, SNDCTL_DSP_GETFMTS, &afmts) == -1) {
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130 PyErr_SetFromErrnoWithFilename(LinuxAudioError, basedev);
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131 return NULL;
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132 }
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133 /* Create and initialize the object */
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134 if ((xp = PyObject_New(lad_t, &Ladtype)) == NULL) {
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
135 close(fd);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
136 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
137 }
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
138 xp->x_fd = fd;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
139 xp->x_mode = imode;
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
140 xp->x_icount = xp->x_ocount = 0;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
141 xp->x_afmts = afmts;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
142 return xp;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
143 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
144
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
145 static void
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
146 lad_dealloc(lad_t *xp)
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
147 {
14057
ca8dc1bae67d lad_dealloc(): if xp->x_fd == -1, it means the descriptor's already
Barry Warsaw <barry@python.org>
parents: 13651
diff changeset
148 /* if already closed, don't reclose it */
ca8dc1bae67d lad_dealloc(): if xp->x_fd == -1, it means the descriptor's already
Barry Warsaw <barry@python.org>
parents: 13651
diff changeset
149 if (xp->x_fd != -1)
ca8dc1bae67d lad_dealloc(): if xp->x_fd == -1, it means the descriptor's already
Barry Warsaw <barry@python.org>
parents: 13651
diff changeset
150 close(xp->x_fd);
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
151 PyObject_Del(xp);
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
152 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
153
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
154 static PyObject *
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
155 lad_read(lad_t *self, PyObject *args)
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
156 {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
157 int size, count;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
158 char *cp;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
159 PyObject *rv;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
160
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
161 if (!PyArg_ParseTuple(args, "i:read", &size))
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
162 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
163 rv = PyString_FromStringAndSize(NULL, size);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
164 if (rv == NULL)
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
165 return NULL;
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
166 cp = PyString_AS_STRING(rv);
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
167 if ((count = read(self->x_fd, cp, size)) < 0) {
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
168 PyErr_SetFromErrno(LinuxAudioError);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
169 Py_DECREF(rv);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
170 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
171 }
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
172 self->x_icount += count;
23295
6fa76b4e59fe Repair widespread misuse of _PyString_Resize. Since it's clear people
Tim Peters <tim.peters@gmail.com>
parents: 21712
diff changeset
173 _PyString_Resize(&rv, count);
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
174 return rv;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
175 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
176
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
177 static PyObject *
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
178 lad_write(lad_t *self, PyObject *args)
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
179 {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
180 char *cp;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
181 int rv, size;
17302
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
182 fd_set write_set_fds;
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
183 struct timeval tv;
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
184 int select_retval;
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
185
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
186 if (!PyArg_ParseTuple(args, "s#:write", &cp, &size))
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
187 return NULL;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
188
17302
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
189 /* use select to wait for audio device to be available */
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
190 FD_ZERO(&write_set_fds);
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
191 FD_SET(self->x_fd, &write_set_fds);
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
192 tv.tv_sec = 4; /* timeout values */
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
193 tv.tv_usec = 0;
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
194
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
195 while (size > 0) {
17302
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
196 select_retval = select(self->x_fd+1, NULL, &write_set_fds, NULL, &tv);
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
197 tv.tv_sec = 1; tv.tv_usec = 0; /* willing to wait this long next time*/
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
198 if (select_retval) {
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
199 if ((rv = write(self->x_fd, cp, size)) == -1) {
17302
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
200 if (errno != EAGAIN) {
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
201 PyErr_SetFromErrno(LinuxAudioError);
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
202 return NULL;
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
203 } else {
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
204 errno = 0; /* EAGAIN: buffer is full, try again */
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
205 }
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
206 } else {
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
207 self->x_ocount += rv;
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
208 size -= rv;
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
209 cp += rv;
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
210 }
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
211 } else {
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
212 /* printf("Not able to write to linux audio device within %ld seconds\n", tv.tv_sec); */
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
213 PyErr_SetFromErrno(LinuxAudioError);
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
214 return NULL;
03ba06247486 Applying SF patch #412553 by Christopher Lee: fix linuxaudiodev
Guido van Rossum <guido@python.org>
parents: 15958
diff changeset
215 }
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
216 }
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
217 Py_INCREF(Py_None);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
218 return Py_None;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
219 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
220
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
221 static PyObject *
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
222 lad_close(lad_t *self, PyObject *unused)
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
223 {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
224 if (self->x_fd >= 0) {
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
225 close(self->x_fd);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
226 self->x_fd = -1;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
227 }
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
228 Py_RETURN_NONE;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
229 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
230
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
231 static PyObject *
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
232 lad_fileno(lad_t *self, PyObject *unused)
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
233 {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
234 return PyInt_FromLong(self->x_fd);
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
235 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
236
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
237 static PyObject *
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
238 lad_setparameters(lad_t *self, PyObject *args)
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
239 {
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
240 int rate, ssize, nchannels, n, fmt, emulate=0;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
241
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
242 if (!PyArg_ParseTuple(args, "iiii|i:setparameters",
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
243 &rate, &ssize, &nchannels, &fmt, &emulate))
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
244 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
245
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
246 if (rate < 0) {
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
247 PyErr_Format(PyExc_ValueError, "expected rate >= 0, not %d",
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
248 rate);
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
249 return NULL;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
250 }
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
251 if (ssize < 0) {
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
252 PyErr_Format(PyExc_ValueError, "expected sample size >= 0, not %d",
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
253 ssize);
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
254 return NULL;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
255 }
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
256 if (nchannels != 1 && nchannels != 2) {
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
257 PyErr_Format(PyExc_ValueError, "nchannels must be 1 or 2, not %d",
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
258 nchannels);
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
259 return NULL;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
260 }
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
261
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
262 for (n = 0; n < n_audio_types; n++)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
263 if (fmt == audio_types[n].a_fmt)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
264 break;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
265 if (n == n_audio_types) {
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
266 PyErr_Format(PyExc_ValueError, "unknown audio encoding: %d", fmt);
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
267 return NULL;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
268 }
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
269 if (audio_types[n].a_bps != ssize) {
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
270 PyErr_Format(PyExc_ValueError,
15900
1129e16a11df better format names and error messages
Ka-Ping Yee <ping@zesty.ca>
parents: 15095
diff changeset
271 "for %s, expected sample size %d, not %d",
1129e16a11df better format names and error messages
Ka-Ping Yee <ping@zesty.ca>
parents: 15095
diff changeset
272 audio_types[n].a_name, audio_types[n].a_bps, ssize);
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
273 return NULL;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
274 }
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
275
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
276 if (emulate == 0) {
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
277 if ((self->x_afmts & audio_types[n].a_fmt) == 0) {
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
278 PyErr_Format(PyExc_ValueError,
15900
1129e16a11df better format names and error messages
Ka-Ping Yee <ping@zesty.ca>
parents: 15095
diff changeset
279 "%s format not supported by device",
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
280 audio_types[n].a_name);
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
281 return NULL;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
282 }
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
283 }
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
284 if (ioctl(self->x_fd, SNDCTL_DSP_SETFMT,
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
285 &audio_types[n].a_fmt) == -1) {
13427
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parents: 12576
diff changeset
286 PyErr_SetFromErrno(LinuxAudioError);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
287 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
288 }
21312
0102692417af SF patch #489989 (Charles G Waldman) linuxaudiodev.c - fix initialization
Guido van Rossum <guido@python.org>
parents: 17302
diff changeset
289 if (ioctl(self->x_fd, SNDCTL_DSP_CHANNELS, &nchannels) == -1) {
0102692417af SF patch #489989 (Charles G Waldman) linuxaudiodev.c - fix initialization
Guido van Rossum <guido@python.org>
parents: 17302
diff changeset
290 PyErr_SetFromErrno(LinuxAudioError);
0102692417af SF patch #489989 (Charles G Waldman) linuxaudiodev.c - fix initialization
Guido van Rossum <guido@python.org>
parents: 17302
diff changeset
291 return NULL;
0102692417af SF patch #489989 (Charles G Waldman) linuxaudiodev.c - fix initialization
Guido van Rossum <guido@python.org>
parents: 17302
diff changeset
292 }
0102692417af SF patch #489989 (Charles G Waldman) linuxaudiodev.c - fix initialization
Guido van Rossum <guido@python.org>
parents: 17302
diff changeset
293 if (ioctl(self->x_fd, SNDCTL_DSP_SPEED, &rate) == -1) {
0102692417af SF patch #489989 (Charles G Waldman) linuxaudiodev.c - fix initialization
Guido van Rossum <guido@python.org>
parents: 17302
diff changeset
294 PyErr_SetFromErrno(LinuxAudioError);
0102692417af SF patch #489989 (Charles G Waldman) linuxaudiodev.c - fix initialization
Guido van Rossum <guido@python.org>
parents: 17302
diff changeset
295 return NULL;
0102692417af SF patch #489989 (Charles G Waldman) linuxaudiodev.c - fix initialization
Guido van Rossum <guido@python.org>
parents: 17302
diff changeset
296 }
12191
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Guido van Rossum <guido@python.org>
parents:
diff changeset
297
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diff changeset
298 Py_INCREF(Py_None);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
299 return Py_None;
12191
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Guido van Rossum <guido@python.org>
parents:
diff changeset
300 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
301
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
302 static int
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
303 _ssize(lad_t *self, int *nchannels, int *ssize)
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
304 {
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parents: 12576
diff changeset
305 int fmt;
12191
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Guido van Rossum <guido@python.org>
parents:
diff changeset
306
13427
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diff changeset
307 fmt = 0;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
308 if (ioctl(self->x_fd, SNDCTL_DSP_SETFMT, &fmt) < 0)
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
309 return -errno;
12191
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Guido van Rossum <guido@python.org>
parents:
diff changeset
310
13427
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parents: 12576
diff changeset
311 switch (fmt) {
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
312 case AFMT_MU_LAW:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
313 case AFMT_A_LAW:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
314 case AFMT_U8:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
315 case AFMT_S8:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
316 *ssize = sizeof(char);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
317 break;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
318 case AFMT_S16_LE:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
319 case AFMT_S16_BE:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
320 case AFMT_U16_LE:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
321 case AFMT_U16_BE:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
322 *ssize = sizeof(short);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
323 break;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
324 case AFMT_MPEG:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
325 case AFMT_IMA_ADPCM:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
326 default:
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
327 return -EOPNOTSUPP;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
328 }
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
329 if (ioctl(self->x_fd, SNDCTL_DSP_CHANNELS, nchannels) < 0)
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
330 return -errno;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
331 return 0;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
332 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
333
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
334
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
335 /* bufsize returns the size of the hardware audio buffer in number
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
336 of samples */
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
337 static PyObject *
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
338 lad_bufsize(lad_t *self, PyObject *unused)
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
339 {
13427
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Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
340 audio_buf_info ai;
36785
6e285c69efc0 Rework channelnumber/samplesize detetion code's output variables a bit to
Thomas Wouters <thomas@python.org>
parents: 36324
diff changeset
341 int nchannels=0, ssize=0;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
342
36785
6e285c69efc0 Rework channelnumber/samplesize detetion code's output variables a bit to
Thomas Wouters <thomas@python.org>
parents: 36324
diff changeset
343 if (_ssize(self, &nchannels, &ssize) < 0 || !ssize || !nchannels) {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
344 PyErr_SetFromErrno(LinuxAudioError);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
345 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
346 }
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
347 if (ioctl(self->x_fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
348 PyErr_SetFromErrno(LinuxAudioError);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
349 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
350 }
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
351 return PyInt_FromLong((ai.fragstotal * ai.fragsize) / (nchannels * ssize));
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
352 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
353
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
354 /* obufcount returns the number of samples that are available in the
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
355 hardware for playing */
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
356 static PyObject *
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
357 lad_obufcount(lad_t *self, PyObject *unused)
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
358 {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
359 audio_buf_info ai;
36785
6e285c69efc0 Rework channelnumber/samplesize detetion code's output variables a bit to
Thomas Wouters <thomas@python.org>
parents: 36324
diff changeset
360 int nchannels=0, ssize=0;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
361
36785
6e285c69efc0 Rework channelnumber/samplesize detetion code's output variables a bit to
Thomas Wouters <thomas@python.org>
parents: 36324
diff changeset
362 if (_ssize(self, &nchannels, &ssize) < 0 || !ssize || !nchannels) {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
363 PyErr_SetFromErrno(LinuxAudioError);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
364 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
365 }
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
366 if (ioctl(self->x_fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
367 PyErr_SetFromErrno(LinuxAudioError);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
368 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
369 }
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
370 return PyInt_FromLong((ai.fragstotal * ai.fragsize - ai.bytes) /
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
371 (ssize * nchannels));
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
372 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
373
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
374 /* obufcount returns the number of samples that can be played without
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
375 blocking */
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
376 static PyObject *
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
377 lad_obuffree(lad_t *self, PyObject *unused)
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
378 {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
379 audio_buf_info ai;
36785
6e285c69efc0 Rework channelnumber/samplesize detetion code's output variables a bit to
Thomas Wouters <thomas@python.org>
parents: 36324
diff changeset
380 int nchannels=0, ssize=0;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
381
36785
6e285c69efc0 Rework channelnumber/samplesize detetion code's output variables a bit to
Thomas Wouters <thomas@python.org>
parents: 36324
diff changeset
382 if (_ssize(self, &nchannels, &ssize) < 0 || !ssize || !nchannels) {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
383 PyErr_SetFromErrno(LinuxAudioError);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
384 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
385 }
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
386 if (ioctl(self->x_fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
387 PyErr_SetFromErrno(LinuxAudioError);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
388 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
389 }
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
390 return PyInt_FromLong(ai.bytes / (ssize * nchannels));
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
391 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
392
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
393 /* Flush the device */
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
394 static PyObject *
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
395 lad_flush(lad_t *self, PyObject *unused)
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
396 {
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
397 if (ioctl(self->x_fd, SNDCTL_DSP_SYNC, NULL) == -1) {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
398 PyErr_SetFromErrno(LinuxAudioError);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
399 return NULL;
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
400 }
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
401 Py_RETURN_NONE;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
402 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
403
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
404 static PyObject *
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
405 lad_getptr(lad_t *self, PyObject *unused)
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
406 {
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
407 count_info info;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
408 int req;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
409
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
410 if (self->x_mode == O_RDONLY)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
411 req = SNDCTL_DSP_GETIPTR;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
412 else
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
413 req = SNDCTL_DSP_GETOPTR;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
414 if (ioctl(self->x_fd, req, &info) == -1) {
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
415 PyErr_SetFromErrno(LinuxAudioError);
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
416 return NULL;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
417 }
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
418 return Py_BuildValue("iii", info.bytes, info.blocks, info.ptr);
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
419 }
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
420
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
421 static PyMethodDef lad_methods[] = {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
422 { "read", (PyCFunction)lad_read, METH_VARARGS },
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
423 { "write", (PyCFunction)lad_write, METH_VARARGS },
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
424 { "setparameters", (PyCFunction)lad_setparameters, METH_VARARGS },
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
425 { "bufsize", (PyCFunction)lad_bufsize, METH_VARARGS },
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
426 { "obufcount", (PyCFunction)lad_obufcount, METH_NOARGS },
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
427 { "obuffree", (PyCFunction)lad_obuffree, METH_NOARGS },
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
428 { "flush", (PyCFunction)lad_flush, METH_NOARGS },
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
429 { "close", (PyCFunction)lad_close, METH_NOARGS },
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
430 { "fileno", (PyCFunction)lad_fileno, METH_NOARGS },
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 36785
diff changeset
431 { "getptr", (PyCFunction)lad_getptr, METH_NOARGS },
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
432 { NULL, NULL} /* sentinel */
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
433 };
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
434
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
435 static PyObject *
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
436 lad_getattr(lad_t *xp, char *name)
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
437 {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
438 return Py_FindMethod(lad_methods, (PyObject *)xp, name);
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
439 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
440
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
441 static PyTypeObject Ladtype = {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
442 PyObject_HEAD_INIT(&PyType_Type)
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
443 0, /*ob_size*/
21313
91dd223829c6 Patch supplied by Burton Radons for his own SF bug #487390: Modifying
Guido van Rossum <guido@python.org>
parents: 21312
diff changeset
444 "linuxaudiodev.linux_audio_device", /*tp_name*/
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
445 sizeof(lad_t), /*tp_size*/
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
446 0, /*tp_itemsize*/
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
447 /* methods */
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
448 (destructor)lad_dealloc, /*tp_dealloc*/
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
449 0, /*tp_print*/
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
450 (getattrfunc)lad_getattr, /*tp_getattr*/
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
451 0, /*tp_setattr*/
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
452 0, /*tp_compare*/
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
453 0, /*tp_repr*/
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
454 };
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
455
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
456 static PyObject *
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
457 ladopen(PyObject *self, PyObject *args)
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
458 {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
459 return (PyObject *)newladobject(args);
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
460 }
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
461
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
462 static PyMethodDef linuxaudiodev_methods[] = {
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
463 { "open", ladopen, METH_VARARGS },
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
464 { 0, 0 },
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
465 };
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
466
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
467 void
13651
8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)',
Thomas Wouters <thomas@python.org>
parents: 13543
diff changeset
468 initlinuxaudiodev(void)
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
469 {
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
470 PyObject *m;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
471
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
472 m = Py_InitModule("linuxaudiodev", linuxaudiodev_methods);
36324
1af7f719ed28 Check return result from Py_InitModule*(). This API can fail.
Neal Norwitz <nnorwitz@gmail.com>
parents: 36221
diff changeset
473 if (m == NULL)
1af7f719ed28 Check return result from Py_InitModule*(). This API can fail.
Neal Norwitz <nnorwitz@gmail.com>
parents: 36221
diff changeset
474 return;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
475
13427
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
476 LinuxAudioError = PyErr_NewException("linuxaudiodev.error", NULL, NULL);
618a7280f6be Add method names to PyArg_ParseTuple() calls for better error messages.
Fred Drake <fdrake@acm.org>
parents: 12576
diff changeset
477 if (LinuxAudioError)
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
478 PyModule_AddObject(m, "error", LinuxAudioError);
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
479
15062
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
480 if (PyModule_AddIntConstant(m, "AFMT_MU_LAW", (long)AFMT_MU_LAW) == -1)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
481 return;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
482 if (PyModule_AddIntConstant(m, "AFMT_A_LAW", (long)AFMT_A_LAW) == -1)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
483 return;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
484 if (PyModule_AddIntConstant(m, "AFMT_U8", (long)AFMT_U8) == -1)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
485 return;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
486 if (PyModule_AddIntConstant(m, "AFMT_S8", (long)AFMT_S8) == -1)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
487 return;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
488 if (PyModule_AddIntConstant(m, "AFMT_U16_BE", (long)AFMT_U16_BE) == -1)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
489 return;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
490 if (PyModule_AddIntConstant(m, "AFMT_U16_LE", (long)AFMT_U16_LE) == -1)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
491 return;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
492 if (PyModule_AddIntConstant(m, "AFMT_S16_BE", (long)AFMT_S16_BE) == -1)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
493 return;
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
494 if (PyModule_AddIntConstant(m, "AFMT_S16_LE", (long)AFMT_S16_LE) == -1)
675748378c81 test_linuxaudio:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14351
diff changeset
495 return;
15095
c199460ccde9 Be consistent in the description of audio formats: <format> <width>
Guido van Rossum <guido@python.org>
parents: 15062
diff changeset
496 if (PyModule_AddIntConstant(m, "AFMT_S16_NE", (long)AFMT_S16_NE) == -1)
c199460ccde9 Be consistent in the description of audio formats: <format> <width>
Guido van Rossum <guido@python.org>
parents: 15062
diff changeset
497 return;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
498
14346
5397fdf88ec2 Do the absolute minimal amount of modifications to eradicate
Barry Warsaw <barry@python.org>
parents: 14306
diff changeset
499 return;
12191
e75ac292ef4c This module's name should be linuxaudio*dev*.c
Guido van Rossum <guido@python.org>
parents:
diff changeset
500 }