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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 | */ | |
87ecb68b PB |
24 | #include "hw/hw.h" |
25 | #include "qemu-timer.h" | |
26 | #include "audio.h" | |
85571bc7 | 27 | |
1d14ffa9 FB |
28 | #define AUDIO_CAP "wav" |
29 | #include "audio_int.h" | |
fb065187 | 30 | |
1d14ffa9 FB |
31 | typedef struct WAVVoiceOut { |
32 | HWVoiceOut hw; | |
fb065187 FB |
33 | QEMUFile *f; |
34 | int64_t old_ticks; | |
35 | void *pcm_buf; | |
36 | int total_samples; | |
1d14ffa9 | 37 | } WAVVoiceOut; |
85571bc7 FB |
38 | |
39 | static struct { | |
1ea879e5 | 40 | struct audsettings settings; |
85571bc7 FB |
41 | const char *wav_path; |
42 | } conf = { | |
1a40d5e2 JQ |
43 | .settings.freq = 44100, |
44 | .settings.nchannels = 2, | |
45 | .settings.fmt = AUD_FMT_S16, | |
46 | .wav_path = "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; | |
1ea879e5 | 54 | struct st_sample *src; |
85571bc7 FB |
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 | ||
1ea879e5 | 109 | static int wav_init_out (HWVoiceOut *hw, struct audsettings *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 | }; | |
1ea879e5 | 119 | struct audsettings 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; | |
f941aa25 TS |
134 | |
135 | case AUD_FMT_S32: | |
136 | case AUD_FMT_U32: | |
137 | dolog ("WAVE files can not handle 32bit formats\n"); | |
138 | return -1; | |
85571bc7 FB |
139 | } |
140 | ||
141 | hdr[34] = bits16 ? 0x10 : 0x08; | |
c0fe3827 | 142 | |
d929eba5 FB |
143 | wav_as.endianness = 0; |
144 | audio_pcm_init_info (&hw->info, &wav_as); | |
c0fe3827 FB |
145 | |
146 | hw->samples = 1024; | |
147 | wav->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); | |
1d14ffa9 | 148 | if (!wav->pcm_buf) { |
c0fe3827 FB |
149 | dolog ("Could not allocate buffer (%d bytes)\n", |
150 | hw->samples << hw->info.shift); | |
85571bc7 | 151 | return -1; |
1d14ffa9 | 152 | } |
85571bc7 | 153 | |
1d14ffa9 FB |
154 | le_store (hdr + 22, hw->info.nchannels, 2); |
155 | le_store (hdr + 24, hw->info.freq, 4); | |
c0fe3827 FB |
156 | le_store (hdr + 28, hw->info.freq << (bits16 + stereo), 4); |
157 | le_store (hdr + 32, 1 << (bits16 + stereo), 2); | |
85571bc7 | 158 | |
e70332b3 | 159 | wav->f = qemu_fopen (conf.wav_path, "wb"); |
85571bc7 | 160 | if (!wav->f) { |
1d14ffa9 | 161 | dolog ("Failed to open wave file `%s'\nReason: %s\n", |
85571bc7 | 162 | conf.wav_path, strerror (errno)); |
7372f88d FB |
163 | qemu_free (wav->pcm_buf); |
164 | wav->pcm_buf = NULL; | |
85571bc7 FB |
165 | return -1; |
166 | } | |
167 | ||
168 | qemu_put_buffer (wav->f, hdr, sizeof (hdr)); | |
169 | return 0; | |
170 | } | |
171 | ||
1d14ffa9 | 172 | static void wav_fini_out (HWVoiceOut *hw) |
85571bc7 | 173 | { |
1d14ffa9 | 174 | WAVVoiceOut *wav = (WAVVoiceOut *) hw; |
85571bc7 FB |
175 | uint8_t rlen[4]; |
176 | uint8_t dlen[4]; | |
50903530 FB |
177 | uint32_t datalen = wav->total_samples << hw->info.shift; |
178 | uint32_t rifflen = datalen + 36; | |
85571bc7 | 179 | |
c0fe3827 | 180 | if (!wav->f) { |
85571bc7 | 181 | return; |
1d14ffa9 | 182 | } |
85571bc7 FB |
183 | |
184 | le_store (rlen, rifflen, 4); | |
185 | le_store (dlen, datalen, 4); | |
186 | ||
187 | qemu_fseek (wav->f, 4, SEEK_SET); | |
188 | qemu_put_buffer (wav->f, rlen, 4); | |
189 | ||
190 | qemu_fseek (wav->f, 32, SEEK_CUR); | |
191 | qemu_put_buffer (wav->f, dlen, 4); | |
192 | ||
e70332b3 | 193 | qemu_fclose (wav->f); |
85571bc7 | 194 | wav->f = NULL; |
7372f88d FB |
195 | |
196 | qemu_free (wav->pcm_buf); | |
197 | wav->pcm_buf = NULL; | |
85571bc7 FB |
198 | } |
199 | ||
1d14ffa9 | 200 | static int wav_ctl_out (HWVoiceOut *hw, int cmd, ...) |
85571bc7 FB |
201 | { |
202 | (void) hw; | |
203 | (void) cmd; | |
204 | return 0; | |
205 | } | |
206 | ||
207 | static void *wav_audio_init (void) | |
208 | { | |
209 | return &conf; | |
210 | } | |
211 | ||
212 | static void wav_audio_fini (void *opaque) | |
213 | { | |
1d14ffa9 | 214 | (void) opaque; |
85571bc7 FB |
215 | ldebug ("wav_fini"); |
216 | } | |
217 | ||
8869defe | 218 | static struct audio_option wav_options[] = { |
2700efa3 JQ |
219 | {.name = "FREQUENCY", |
220 | .tag = AUD_OPT_INT, | |
221 | .valp = &conf.settings.freq, | |
222 | .descr = "Frequency"}, | |
223 | {.name = "FORMAT", | |
224 | .tag = AUD_OPT_FMT, | |
225 | .valp = &conf.settings.fmt, | |
226 | .descr = "Format"}, | |
227 | {.name = "DAC_FIXED_CHANNELS", | |
228 | .tag = AUD_OPT_INT, | |
229 | .valp = &conf.settings.nchannels, | |
230 | .descr = "Number of channels (1 - mono, 2 - stereo)"}, | |
231 | {.name = "PATH", | |
232 | .tag = AUD_OPT_STR, | |
233 | .valp = &conf.wav_path, | |
234 | .descr = "Path to wave file"}, | |
235 | { /* End of list */ } | |
1d14ffa9 FB |
236 | }; |
237 | ||
35f4b58c | 238 | static struct audio_pcm_ops wav_pcm_ops = { |
1dd3e4d1 JQ |
239 | .init_out = wav_init_out, |
240 | .fini_out = wav_fini_out, | |
241 | .run_out = wav_run_out, | |
242 | .write = wav_write_out, | |
243 | .ctl_out = wav_ctl_out, | |
85571bc7 FB |
244 | }; |
245 | ||
1d14ffa9 | 246 | struct audio_driver wav_audio_driver = { |
bee37f32 JQ |
247 | .name = "wav", |
248 | .descr = "WAV renderer http://wikipedia.org/wiki/WAV", | |
249 | .options = wav_options, | |
250 | .init = wav_audio_init, | |
251 | .fini = wav_audio_fini, | |
252 | .pcm_ops = &wav_pcm_ops, | |
253 | .can_be_default = 0, | |
254 | .max_voices_out = 1, | |
255 | .max_voices_in = 0, | |
256 | .voice_size_out = sizeof (WAVVoiceOut), | |
257 | .voice_size_in = 0 | |
85571bc7 | 258 | }; |