hw/ide/core: Trivial typo fix
[qemu.git] / audio / wavaudio.c
1 /*
2 * QEMU WAV audio driver
3 *
4 * Copyright (c) 2004-2005 Vassili Karpov (malc)
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "qemu/host-utils.h"
27 #include "qemu/module.h"
28 #include "qemu/timer.h"
29 #include "qapi/opts-visitor.h"
30 #include "audio.h"
31
32 #define AUDIO_CAP "wav"
33 #include "audio_int.h"
34
35 typedef struct WAVVoiceOut {
36 HWVoiceOut hw;
37 FILE *f;
38 RateCtl rate;
39 int total_samples;
40 } WAVVoiceOut;
41
42 static size_t wav_write_out(HWVoiceOut *hw, void *buf, size_t len)
43 {
44 WAVVoiceOut *wav = (WAVVoiceOut *) hw;
45 int64_t bytes = audio_rate_get_bytes(&hw->info, &wav->rate, len);
46 assert(bytes % hw->info.bytes_per_frame == 0);
47
48 if (bytes && fwrite(buf, bytes, 1, wav->f) != 1) {
49 dolog("wav_write_out: fwrite of %" PRId64 " bytes failed\nReason: %s\n",
50 bytes, strerror(errno));
51 }
52
53 wav->total_samples += bytes / hw->info.bytes_per_frame;
54 return bytes;
55 }
56
57 /* VICE code: Store number as little endian. */
58 static void le_store (uint8_t *buf, uint32_t val, int len)
59 {
60 int i;
61 for (i = 0; i < len; i++) {
62 buf[i] = (uint8_t) (val & 0xff);
63 val >>= 8;
64 }
65 }
66
67 static int wav_init_out(HWVoiceOut *hw, struct audsettings *as,
68 void *drv_opaque)
69 {
70 WAVVoiceOut *wav = (WAVVoiceOut *) hw;
71 int bits16 = 0, stereo = 0;
72 uint8_t hdr[] = {
73 0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56,
74 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00,
75 0x02, 0x00, 0x44, 0xac, 0x00, 0x00, 0x10, 0xb1, 0x02, 0x00, 0x04,
76 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00
77 };
78 Audiodev *dev = drv_opaque;
79 AudiodevWavOptions *wopts = &dev->u.wav;
80 struct audsettings wav_as = audiodev_to_audsettings(dev->u.wav.out);
81 const char *wav_path = wopts->has_path ? wopts->path : "qemu.wav";
82
83 stereo = wav_as.nchannels == 2;
84 switch (wav_as.fmt) {
85 case AUDIO_FORMAT_S8:
86 case AUDIO_FORMAT_U8:
87 bits16 = 0;
88 break;
89
90 case AUDIO_FORMAT_S16:
91 case AUDIO_FORMAT_U16:
92 bits16 = 1;
93 break;
94
95 case AUDIO_FORMAT_S32:
96 case AUDIO_FORMAT_U32:
97 dolog ("WAVE files can not handle 32bit formats\n");
98 return -1;
99
100 default:
101 abort();
102 }
103
104 hdr[34] = bits16 ? 0x10 : 0x08;
105
106 wav_as.endianness = 0;
107 audio_pcm_init_info (&hw->info, &wav_as);
108
109 hw->samples = 1024;
110 le_store (hdr + 22, hw->info.nchannels, 2);
111 le_store (hdr + 24, hw->info.freq, 4);
112 le_store (hdr + 28, hw->info.freq << (bits16 + stereo), 4);
113 le_store (hdr + 32, 1 << (bits16 + stereo), 2);
114
115 wav->f = fopen(wav_path, "wb");
116 if (!wav->f) {
117 dolog ("Failed to open wave file `%s'\nReason: %s\n",
118 wav_path, strerror(errno));
119 return -1;
120 }
121
122 if (fwrite (hdr, sizeof (hdr), 1, wav->f) != 1) {
123 dolog ("wav_init_out: failed to write header\nReason: %s\n",
124 strerror(errno));
125 return -1;
126 }
127
128 audio_rate_start(&wav->rate);
129 return 0;
130 }
131
132 static void wav_fini_out (HWVoiceOut *hw)
133 {
134 WAVVoiceOut *wav = (WAVVoiceOut *) hw;
135 uint8_t rlen[4];
136 uint8_t dlen[4];
137 uint32_t datalen = wav->total_samples * hw->info.bytes_per_frame;
138 uint32_t rifflen = datalen + 36;
139
140 if (!wav->f) {
141 return;
142 }
143
144 le_store (rlen, rifflen, 4);
145 le_store (dlen, datalen, 4);
146
147 if (fseek (wav->f, 4, SEEK_SET)) {
148 dolog ("wav_fini_out: fseek to rlen failed\nReason: %s\n",
149 strerror(errno));
150 goto doclose;
151 }
152 if (fwrite (rlen, 4, 1, wav->f) != 1) {
153 dolog ("wav_fini_out: failed to write rlen\nReason: %s\n",
154 strerror (errno));
155 goto doclose;
156 }
157 if (fseek (wav->f, 32, SEEK_CUR)) {
158 dolog ("wav_fini_out: fseek to dlen failed\nReason: %s\n",
159 strerror (errno));
160 goto doclose;
161 }
162 if (fwrite (dlen, 4, 1, wav->f) != 1) {
163 dolog ("wav_fini_out: failed to write dlen\nReaons: %s\n",
164 strerror (errno));
165 goto doclose;
166 }
167
168 doclose:
169 if (fclose (wav->f)) {
170 dolog ("wav_fini_out: fclose %p failed\nReason: %s\n",
171 wav->f, strerror (errno));
172 }
173 wav->f = NULL;
174 }
175
176 static void wav_enable_out(HWVoiceOut *hw, bool enable)
177 {
178 WAVVoiceOut *wav = (WAVVoiceOut *) hw;
179
180 if (enable) {
181 audio_rate_start(&wav->rate);
182 }
183 }
184
185 static void *wav_audio_init(Audiodev *dev)
186 {
187 assert(dev->driver == AUDIODEV_DRIVER_WAV);
188 return dev;
189 }
190
191 static void wav_audio_fini (void *opaque)
192 {
193 ldebug ("wav_fini");
194 }
195
196 static struct audio_pcm_ops wav_pcm_ops = {
197 .init_out = wav_init_out,
198 .fini_out = wav_fini_out,
199 .write = wav_write_out,
200 .run_buffer_out = audio_generic_run_buffer_out,
201 .enable_out = wav_enable_out,
202 };
203
204 static struct audio_driver wav_audio_driver = {
205 .name = "wav",
206 .descr = "WAV renderer http://wikipedia.org/wiki/WAV",
207 .init = wav_audio_init,
208 .fini = wav_audio_fini,
209 .pcm_ops = &wav_pcm_ops,
210 .can_be_default = 0,
211 .max_voices_out = 1,
212 .max_voices_in = 0,
213 .voice_size_out = sizeof (WAVVoiceOut),
214 .voice_size_in = 0
215 };
216
217 static void register_audio_wav(void)
218 {
219 audio_driver_register(&wav_audio_driver);
220 }
221 type_init(register_audio_wav);