]>
Commit | Line | Data |
---|---|---|
85571bc7 | 1 | /* |
1d14ffa9 FB |
2 | * QEMU WAV audio driver |
3 | * | |
4 | * Copyright (c) 2004-2005 Vassili Karpov (malc) | |
5 | * | |
85571bc7 FB |
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 | #include "vl.h" | |
25 | ||
1d14ffa9 FB |
26 | #define AUDIO_CAP "wav" |
27 | #include "audio_int.h" | |
fb065187 | 28 | |
1d14ffa9 FB |
29 | typedef struct WAVVoiceOut { |
30 | HWVoiceOut hw; | |
fb065187 FB |
31 | QEMUFile *f; |
32 | int64_t old_ticks; | |
33 | void *pcm_buf; | |
34 | int total_samples; | |
1d14ffa9 | 35 | } WAVVoiceOut; |
85571bc7 FB |
36 | |
37 | static struct { | |
c0fe3827 | 38 | audsettings_t settings; |
85571bc7 FB |
39 | const char *wav_path; |
40 | } conf = { | |
c0fe3827 FB |
41 | { |
42 | 44100, | |
43 | 2, | |
44 | AUD_FMT_S16 | |
45 | }, | |
46 | "qemu.wav" | |
85571bc7 FB |
47 | }; |
48 | ||
1d14ffa9 | 49 | static int wav_run_out (HWVoiceOut *hw) |
85571bc7 | 50 | { |
1d14ffa9 | 51 | WAVVoiceOut *wav = (WAVVoiceOut *) hw; |
85571bc7 FB |
52 | int rpos, live, decr, samples; |
53 | uint8_t *dst; | |
54 | st_sample_t *src; | |
55 | int64_t now = qemu_get_clock (vm_clock); | |
56 | int64_t ticks = now - wav->old_ticks; | |
1d14ffa9 | 57 | int64_t bytes = (ticks * hw->info.bytes_per_second) / ticks_per_sec; |
85571bc7 | 58 | |
1d14ffa9 FB |
59 | if (bytes > INT_MAX) { |
60 | samples = INT_MAX >> hw->info.shift; | |
61 | } | |
62 | else { | |
63 | samples = bytes >> hw->info.shift; | |
64 | } | |
85571bc7 | 65 | |
1d14ffa9 FB |
66 | live = audio_pcm_hw_get_live_out (hw); |
67 | if (!live) { | |
68 | return 0; | |
69 | } | |
85571bc7 | 70 | |
7372f88d | 71 | wav->old_ticks = now; |
85571bc7 FB |
72 | decr = audio_MIN (live, samples); |
73 | samples = decr; | |
74 | rpos = hw->rpos; | |
75 | while (samples) { | |
76 | int left_till_end_samples = hw->samples - rpos; | |
77 | int convert_samples = audio_MIN (samples, left_till_end_samples); | |
78 | ||
1d14ffa9 FB |
79 | src = hw->mix_buf + rpos; |
80 | dst = advance (wav->pcm_buf, rpos << hw->info.shift); | |
85571bc7 FB |
81 | |
82 | hw->clip (dst, src, convert_samples); | |
1d14ffa9 | 83 | qemu_put_buffer (wav->f, dst, convert_samples << hw->info.shift); |
85571bc7 FB |
84 | |
85 | rpos = (rpos + convert_samples) % hw->samples; | |
86 | samples -= convert_samples; | |
87 | wav->total_samples += convert_samples; | |
88 | } | |
89 | ||
85571bc7 | 90 | hw->rpos = rpos; |
1d14ffa9 | 91 | return decr; |
85571bc7 FB |
92 | } |
93 | ||
1d14ffa9 | 94 | static int wav_write_out (SWVoiceOut *sw, void *buf, int len) |
85571bc7 | 95 | { |
1d14ffa9 | 96 | return audio_pcm_sw_write (sw, buf, len); |
85571bc7 FB |
97 | } |
98 | ||
85571bc7 FB |
99 | /* VICE code: Store number as little endian. */ |
100 | static void le_store (uint8_t *buf, uint32_t val, int len) | |
101 | { | |
102 | int i; | |
103 | for (i = 0; i < len; i++) { | |
104 | buf[i] = (uint8_t) (val & 0xff); | |
105 | val >>= 8; | |
106 | } | |
107 | } | |
108 | ||
c0fe3827 | 109 | static int wav_init_out (HWVoiceOut *hw, audsettings_t *as) |
85571bc7 | 110 | { |
1d14ffa9 | 111 | WAVVoiceOut *wav = (WAVVoiceOut *) hw; |
c0fe3827 | 112 | int bits16 = 0, stereo = 0; |
85571bc7 FB |
113 | uint8_t hdr[] = { |
114 | 0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, | |
115 | 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00, | |
116 | 0x02, 0x00, 0x44, 0xac, 0x00, 0x00, 0x10, 0xb1, 0x02, 0x00, 0x04, | |
117 | 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00 | |
118 | }; | |
c0fe3827 | 119 | audsettings_t wav_as = conf.settings; |
85571bc7 | 120 | |
c0fe3827 | 121 | (void) as; |
1d14ffa9 | 122 | |
c0fe3827 FB |
123 | stereo = wav_as.nchannels == 2; |
124 | switch (wav_as.fmt) { | |
85571bc7 FB |
125 | case AUD_FMT_S8: |
126 | case AUD_FMT_U8: | |
1d14ffa9 | 127 | bits16 = 0; |
85571bc7 FB |
128 | break; |
129 | ||
130 | case AUD_FMT_S16: | |
131 | case AUD_FMT_U16: | |
132 | bits16 = 1; | |
133 | break; | |
134 | } | |
135 | ||
136 | hdr[34] = bits16 ? 0x10 : 0x08; | |
c0fe3827 FB |
137 | |
138 | audio_pcm_init_info (&hw->info, &wav_as, audio_need_to_swap_endian (0)); | |
139 | ||
140 | hw->samples = 1024; | |
141 | wav->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); | |
1d14ffa9 | 142 | if (!wav->pcm_buf) { |
c0fe3827 FB |
143 | dolog ("Could not allocate buffer (%d bytes)\n", |
144 | hw->samples << hw->info.shift); | |
85571bc7 | 145 | return -1; |
1d14ffa9 | 146 | } |
85571bc7 | 147 | |
1d14ffa9 FB |
148 | le_store (hdr + 22, hw->info.nchannels, 2); |
149 | le_store (hdr + 24, hw->info.freq, 4); | |
c0fe3827 FB |
150 | le_store (hdr + 28, hw->info.freq << (bits16 + stereo), 4); |
151 | le_store (hdr + 32, 1 << (bits16 + stereo), 2); | |
85571bc7 FB |
152 | |
153 | wav->f = fopen (conf.wav_path, "wb"); | |
154 | if (!wav->f) { | |
1d14ffa9 | 155 | dolog ("Failed to open wave file `%s'\nReason: %s\n", |
85571bc7 | 156 | conf.wav_path, strerror (errno)); |
7372f88d FB |
157 | qemu_free (wav->pcm_buf); |
158 | wav->pcm_buf = NULL; | |
85571bc7 FB |
159 | return -1; |
160 | } | |
161 | ||
162 | qemu_put_buffer (wav->f, hdr, sizeof (hdr)); | |
163 | return 0; | |
164 | } | |
165 | ||
1d14ffa9 | 166 | static void wav_fini_out (HWVoiceOut *hw) |
85571bc7 | 167 | { |
1d14ffa9 | 168 | WAVVoiceOut *wav = (WAVVoiceOut *) hw; |
85571bc7 FB |
169 | uint8_t rlen[4]; |
170 | uint8_t dlen[4]; | |
50903530 FB |
171 | uint32_t datalen = wav->total_samples << hw->info.shift; |
172 | uint32_t rifflen = datalen + 36; | |
85571bc7 | 173 | |
c0fe3827 | 174 | if (!wav->f) { |
85571bc7 | 175 | return; |
1d14ffa9 | 176 | } |
85571bc7 FB |
177 | |
178 | le_store (rlen, rifflen, 4); | |
179 | le_store (dlen, datalen, 4); | |
180 | ||
181 | qemu_fseek (wav->f, 4, SEEK_SET); | |
182 | qemu_put_buffer (wav->f, rlen, 4); | |
183 | ||
184 | qemu_fseek (wav->f, 32, SEEK_CUR); | |
185 | qemu_put_buffer (wav->f, dlen, 4); | |
186 | ||
187 | fclose (wav->f); | |
188 | wav->f = NULL; | |
7372f88d FB |
189 | |
190 | qemu_free (wav->pcm_buf); | |
191 | wav->pcm_buf = NULL; | |
85571bc7 FB |
192 | } |
193 | ||
1d14ffa9 | 194 | static int wav_ctl_out (HWVoiceOut *hw, int cmd, ...) |
85571bc7 FB |
195 | { |
196 | (void) hw; | |
197 | (void) cmd; | |
198 | return 0; | |
199 | } | |
200 | ||
201 | static void *wav_audio_init (void) | |
202 | { | |
203 | return &conf; | |
204 | } | |
205 | ||
206 | static void wav_audio_fini (void *opaque) | |
207 | { | |
1d14ffa9 | 208 | (void) opaque; |
85571bc7 FB |
209 | ldebug ("wav_fini"); |
210 | } | |
211 | ||
1d14ffa9 | 212 | struct audio_option wav_options[] = { |
c0fe3827 FB |
213 | {"FREQUENCY", AUD_OPT_INT, &conf.settings.freq, |
214 | "Frequency", NULL, 0}, | |
215 | ||
216 | {"FORMAT", AUD_OPT_FMT, &conf.settings.fmt, | |
217 | "Format", NULL, 0}, | |
218 | ||
219 | {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.settings.nchannels, | |
220 | "Number of channels (1 - mono, 2 - stereo)", NULL, 0}, | |
221 | ||
1d14ffa9 FB |
222 | {"PATH", AUD_OPT_STR, &conf.wav_path, |
223 | "Path to wave file", NULL, 0}, | |
224 | {NULL, 0, NULL, NULL, NULL, 0} | |
225 | }; | |
226 | ||
227 | struct audio_pcm_ops wav_pcm_ops = { | |
228 | wav_init_out, | |
229 | wav_fini_out, | |
230 | wav_run_out, | |
231 | wav_write_out, | |
232 | wav_ctl_out, | |
233 | ||
234 | NULL, | |
235 | NULL, | |
236 | NULL, | |
237 | NULL, | |
238 | NULL | |
85571bc7 FB |
239 | }; |
240 | ||
1d14ffa9 FB |
241 | struct audio_driver wav_audio_driver = { |
242 | INIT_FIELD (name = ) "wav", | |
243 | INIT_FIELD (descr = ) | |
244 | "WAV renderer http://wikipedia.org/wiki/WAV", | |
245 | INIT_FIELD (options = ) wav_options, | |
246 | INIT_FIELD (init = ) wav_audio_init, | |
247 | INIT_FIELD (fini = ) wav_audio_fini, | |
248 | INIT_FIELD (pcm_ops = ) &wav_pcm_ops, | |
249 | INIT_FIELD (can_be_default = ) 0, | |
250 | INIT_FIELD (max_voices_out = ) 1, | |
251 | INIT_FIELD (max_voices_in = ) 0, | |
252 | INIT_FIELD (voice_size_out = ) sizeof (WAVVoiceOut), | |
253 | INIT_FIELD (voice_size_in = ) 0 | |
85571bc7 | 254 | }; |