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1 | 85571bc7 | bellard | /*
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2 | 1d14ffa9 | bellard | * QEMU WAV audio driver
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3 | 1d14ffa9 | bellard | *
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4 | 1d14ffa9 | bellard | * Copyright (c) 2004-2005 Vassili Karpov (malc)
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5 | 1d14ffa9 | bellard | *
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6 | 85571bc7 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 85571bc7 | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | 85571bc7 | bellard | * in the Software without restriction, including without limitation the rights
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9 | 85571bc7 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 85571bc7 | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | 85571bc7 | bellard | * furnished to do so, subject to the following conditions:
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12 | 85571bc7 | bellard | *
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13 | 85571bc7 | bellard | * The above copyright notice and this permission notice shall be included in
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14 | 85571bc7 | bellard | * all copies or substantial portions of the Software.
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15 | 85571bc7 | bellard | *
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16 | 85571bc7 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 85571bc7 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 85571bc7 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 85571bc7 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 85571bc7 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 85571bc7 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 85571bc7 | bellard | * THE SOFTWARE.
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23 | 85571bc7 | bellard | */
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24 | 85571bc7 | bellard | #include "vl.h" |
25 | 85571bc7 | bellard | |
26 | 1d14ffa9 | bellard | #define AUDIO_CAP "wav" |
27 | 1d14ffa9 | bellard | #include "audio_int.h" |
28 | fb065187 | bellard | |
29 | 1d14ffa9 | bellard | typedef struct WAVVoiceOut { |
30 | 1d14ffa9 | bellard | HWVoiceOut hw; |
31 | fb065187 | bellard | QEMUFile *f; |
32 | fb065187 | bellard | int64_t old_ticks; |
33 | fb065187 | bellard | void *pcm_buf;
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34 | fb065187 | bellard | int total_samples;
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35 | 1d14ffa9 | bellard | } WAVVoiceOut; |
36 | 85571bc7 | bellard | |
37 | 85571bc7 | bellard | static struct { |
38 | c0fe3827 | bellard | audsettings_t settings; |
39 | 85571bc7 | bellard | const char *wav_path; |
40 | 85571bc7 | bellard | } conf = { |
41 | c0fe3827 | bellard | { |
42 | c0fe3827 | bellard | 44100,
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43 | c0fe3827 | bellard | 2,
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44 | c0fe3827 | bellard | AUD_FMT_S16 |
45 | c0fe3827 | bellard | }, |
46 | c0fe3827 | bellard | "qemu.wav"
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47 | 85571bc7 | bellard | }; |
48 | 85571bc7 | bellard | |
49 | 1d14ffa9 | bellard | static int wav_run_out (HWVoiceOut *hw) |
50 | 85571bc7 | bellard | { |
51 | 1d14ffa9 | bellard | WAVVoiceOut *wav = (WAVVoiceOut *) hw; |
52 | 85571bc7 | bellard | int rpos, live, decr, samples;
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53 | 85571bc7 | bellard | uint8_t *dst; |
54 | 85571bc7 | bellard | st_sample_t *src; |
55 | 85571bc7 | bellard | int64_t now = qemu_get_clock (vm_clock); |
56 | 85571bc7 | bellard | int64_t ticks = now - wav->old_ticks; |
57 | 1d14ffa9 | bellard | int64_t bytes = (ticks * hw->info.bytes_per_second) / ticks_per_sec; |
58 | 85571bc7 | bellard | |
59 | 1d14ffa9 | bellard | if (bytes > INT_MAX) {
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60 | 1d14ffa9 | bellard | samples = INT_MAX >> hw->info.shift; |
61 | 1d14ffa9 | bellard | } |
62 | 1d14ffa9 | bellard | else {
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63 | 1d14ffa9 | bellard | samples = bytes >> hw->info.shift; |
64 | 1d14ffa9 | bellard | } |
65 | 85571bc7 | bellard | |
66 | 1d14ffa9 | bellard | live = audio_pcm_hw_get_live_out (hw); |
67 | 1d14ffa9 | bellard | if (!live) {
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68 | 1d14ffa9 | bellard | return 0; |
69 | 1d14ffa9 | bellard | } |
70 | 85571bc7 | bellard | |
71 | 7372f88d | bellard | wav->old_ticks = now; |
72 | 85571bc7 | bellard | decr = audio_MIN (live, samples); |
73 | 85571bc7 | bellard | samples = decr; |
74 | 85571bc7 | bellard | rpos = hw->rpos; |
75 | 85571bc7 | bellard | while (samples) {
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76 | 85571bc7 | bellard | int left_till_end_samples = hw->samples - rpos;
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77 | 85571bc7 | bellard | int convert_samples = audio_MIN (samples, left_till_end_samples);
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78 | 85571bc7 | bellard | |
79 | 1d14ffa9 | bellard | src = hw->mix_buf + rpos; |
80 | 1d14ffa9 | bellard | dst = advance (wav->pcm_buf, rpos << hw->info.shift); |
81 | 85571bc7 | bellard | |
82 | 85571bc7 | bellard | hw->clip (dst, src, convert_samples); |
83 | 1d14ffa9 | bellard | qemu_put_buffer (wav->f, dst, convert_samples << hw->info.shift); |
84 | 1d14ffa9 | bellard | mixeng_clear (src, convert_samples); |
85 | 85571bc7 | bellard | |
86 | 85571bc7 | bellard | rpos = (rpos + convert_samples) % hw->samples; |
87 | 85571bc7 | bellard | samples -= convert_samples; |
88 | 85571bc7 | bellard | wav->total_samples += convert_samples; |
89 | 85571bc7 | bellard | } |
90 | 85571bc7 | bellard | |
91 | 85571bc7 | bellard | hw->rpos = rpos; |
92 | 1d14ffa9 | bellard | return decr;
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93 | 85571bc7 | bellard | } |
94 | 85571bc7 | bellard | |
95 | 1d14ffa9 | bellard | static int wav_write_out (SWVoiceOut *sw, void *buf, int len) |
96 | 85571bc7 | bellard | { |
97 | 1d14ffa9 | bellard | return audio_pcm_sw_write (sw, buf, len);
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98 | 85571bc7 | bellard | } |
99 | 85571bc7 | bellard | |
100 | 85571bc7 | bellard | /* VICE code: Store number as little endian. */
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101 | 85571bc7 | bellard | static void le_store (uint8_t *buf, uint32_t val, int len) |
102 | 85571bc7 | bellard | { |
103 | 85571bc7 | bellard | int i;
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104 | 85571bc7 | bellard | for (i = 0; i < len; i++) { |
105 | 85571bc7 | bellard | buf[i] = (uint8_t) (val & 0xff);
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106 | 85571bc7 | bellard | val >>= 8;
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107 | 85571bc7 | bellard | } |
108 | 85571bc7 | bellard | } |
109 | 85571bc7 | bellard | |
110 | c0fe3827 | bellard | static int wav_init_out (HWVoiceOut *hw, audsettings_t *as) |
111 | 85571bc7 | bellard | { |
112 | 1d14ffa9 | bellard | WAVVoiceOut *wav = (WAVVoiceOut *) hw; |
113 | c0fe3827 | bellard | int bits16 = 0, stereo = 0; |
114 | 85571bc7 | bellard | uint8_t hdr[] = { |
115 | 85571bc7 | bellard | 0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, |
116 | 85571bc7 | bellard | 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00, |
117 | 85571bc7 | bellard | 0x02, 0x00, 0x44, 0xac, 0x00, 0x00, 0x10, 0xb1, 0x02, 0x00, 0x04, |
118 | 85571bc7 | bellard | 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00 |
119 | 85571bc7 | bellard | }; |
120 | c0fe3827 | bellard | audsettings_t wav_as = conf.settings; |
121 | 85571bc7 | bellard | |
122 | c0fe3827 | bellard | (void) as;
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123 | 1d14ffa9 | bellard | |
124 | c0fe3827 | bellard | stereo = wav_as.nchannels == 2;
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125 | c0fe3827 | bellard | switch (wav_as.fmt) {
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126 | 85571bc7 | bellard | case AUD_FMT_S8:
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127 | 85571bc7 | bellard | case AUD_FMT_U8:
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128 | 1d14ffa9 | bellard | bits16 = 0;
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129 | 85571bc7 | bellard | break;
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130 | 85571bc7 | bellard | |
131 | 85571bc7 | bellard | case AUD_FMT_S16:
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132 | 85571bc7 | bellard | case AUD_FMT_U16:
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133 | 85571bc7 | bellard | bits16 = 1;
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134 | 85571bc7 | bellard | break;
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135 | 85571bc7 | bellard | } |
136 | 85571bc7 | bellard | |
137 | 85571bc7 | bellard | hdr[34] = bits16 ? 0x10 : 0x08; |
138 | c0fe3827 | bellard | |
139 | c0fe3827 | bellard | audio_pcm_init_info (&hw->info, &wav_as, audio_need_to_swap_endian (0));
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140 | c0fe3827 | bellard | |
141 | c0fe3827 | bellard | hw->samples = 1024;
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142 | c0fe3827 | bellard | wav->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
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143 | 1d14ffa9 | bellard | if (!wav->pcm_buf) {
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144 | c0fe3827 | bellard | dolog ("Could not allocate buffer (%d bytes)\n",
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145 | c0fe3827 | bellard | hw->samples << hw->info.shift); |
146 | 85571bc7 | bellard | return -1; |
147 | 1d14ffa9 | bellard | } |
148 | 85571bc7 | bellard | |
149 | 1d14ffa9 | bellard | le_store (hdr + 22, hw->info.nchannels, 2); |
150 | 1d14ffa9 | bellard | le_store (hdr + 24, hw->info.freq, 4); |
151 | c0fe3827 | bellard | le_store (hdr + 28, hw->info.freq << (bits16 + stereo), 4); |
152 | c0fe3827 | bellard | le_store (hdr + 32, 1 << (bits16 + stereo), 2); |
153 | 85571bc7 | bellard | |
154 | 85571bc7 | bellard | wav->f = fopen (conf.wav_path, "wb");
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155 | 85571bc7 | bellard | if (!wav->f) {
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156 | 1d14ffa9 | bellard | dolog ("Failed to open wave file `%s'\nReason: %s\n",
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157 | 85571bc7 | bellard | conf.wav_path, strerror (errno)); |
158 | 7372f88d | bellard | qemu_free (wav->pcm_buf); |
159 | 7372f88d | bellard | wav->pcm_buf = NULL;
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160 | 85571bc7 | bellard | return -1; |
161 | 85571bc7 | bellard | } |
162 | 85571bc7 | bellard | |
163 | 85571bc7 | bellard | qemu_put_buffer (wav->f, hdr, sizeof (hdr));
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164 | 85571bc7 | bellard | return 0; |
165 | 85571bc7 | bellard | } |
166 | 85571bc7 | bellard | |
167 | 1d14ffa9 | bellard | static void wav_fini_out (HWVoiceOut *hw) |
168 | 85571bc7 | bellard | { |
169 | 1d14ffa9 | bellard | WAVVoiceOut *wav = (WAVVoiceOut *) hw; |
170 | 85571bc7 | bellard | uint8_t rlen[4];
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171 | 85571bc7 | bellard | uint8_t dlen[4];
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172 | 50903530 | bellard | uint32_t datalen = wav->total_samples << hw->info.shift; |
173 | 50903530 | bellard | uint32_t rifflen = datalen + 36;
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174 | 85571bc7 | bellard | |
175 | c0fe3827 | bellard | if (!wav->f) {
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176 | 85571bc7 | bellard | return;
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177 | 1d14ffa9 | bellard | } |
178 | 85571bc7 | bellard | |
179 | 85571bc7 | bellard | le_store (rlen, rifflen, 4);
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180 | 85571bc7 | bellard | le_store (dlen, datalen, 4);
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181 | 85571bc7 | bellard | |
182 | 85571bc7 | bellard | qemu_fseek (wav->f, 4, SEEK_SET);
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183 | 85571bc7 | bellard | qemu_put_buffer (wav->f, rlen, 4);
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184 | 85571bc7 | bellard | |
185 | 85571bc7 | bellard | qemu_fseek (wav->f, 32, SEEK_CUR);
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186 | 85571bc7 | bellard | qemu_put_buffer (wav->f, dlen, 4);
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187 | 85571bc7 | bellard | |
188 | 85571bc7 | bellard | fclose (wav->f); |
189 | 85571bc7 | bellard | wav->f = NULL;
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190 | 7372f88d | bellard | |
191 | 7372f88d | bellard | qemu_free (wav->pcm_buf); |
192 | 7372f88d | bellard | wav->pcm_buf = NULL;
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193 | 85571bc7 | bellard | } |
194 | 85571bc7 | bellard | |
195 | 1d14ffa9 | bellard | static int wav_ctl_out (HWVoiceOut *hw, int cmd, ...) |
196 | 85571bc7 | bellard | { |
197 | 85571bc7 | bellard | (void) hw;
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198 | 85571bc7 | bellard | (void) cmd;
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199 | 85571bc7 | bellard | return 0; |
200 | 85571bc7 | bellard | } |
201 | 85571bc7 | bellard | |
202 | 85571bc7 | bellard | static void *wav_audio_init (void) |
203 | 85571bc7 | bellard | { |
204 | 85571bc7 | bellard | return &conf;
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205 | 85571bc7 | bellard | } |
206 | 85571bc7 | bellard | |
207 | 85571bc7 | bellard | static void wav_audio_fini (void *opaque) |
208 | 85571bc7 | bellard | { |
209 | 1d14ffa9 | bellard | (void) opaque;
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210 | 85571bc7 | bellard | ldebug ("wav_fini");
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211 | 85571bc7 | bellard | } |
212 | 85571bc7 | bellard | |
213 | 1d14ffa9 | bellard | struct audio_option wav_options[] = {
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214 | c0fe3827 | bellard | {"FREQUENCY", AUD_OPT_INT, &conf.settings.freq,
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215 | c0fe3827 | bellard | "Frequency", NULL, 0}, |
216 | c0fe3827 | bellard | |
217 | c0fe3827 | bellard | {"FORMAT", AUD_OPT_FMT, &conf.settings.fmt,
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218 | c0fe3827 | bellard | "Format", NULL, 0}, |
219 | c0fe3827 | bellard | |
220 | c0fe3827 | bellard | {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.settings.nchannels,
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221 | c0fe3827 | bellard | "Number of channels (1 - mono, 2 - stereo)", NULL, 0}, |
222 | c0fe3827 | bellard | |
223 | 1d14ffa9 | bellard | {"PATH", AUD_OPT_STR, &conf.wav_path,
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224 | 1d14ffa9 | bellard | "Path to wave file", NULL, 0}, |
225 | 1d14ffa9 | bellard | {NULL, 0, NULL, NULL, NULL, 0} |
226 | 1d14ffa9 | bellard | }; |
227 | 1d14ffa9 | bellard | |
228 | 1d14ffa9 | bellard | struct audio_pcm_ops wav_pcm_ops = {
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229 | 1d14ffa9 | bellard | wav_init_out, |
230 | 1d14ffa9 | bellard | wav_fini_out, |
231 | 1d14ffa9 | bellard | wav_run_out, |
232 | 1d14ffa9 | bellard | wav_write_out, |
233 | 1d14ffa9 | bellard | wav_ctl_out, |
234 | 1d14ffa9 | bellard | |
235 | 1d14ffa9 | bellard | NULL,
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236 | 1d14ffa9 | bellard | NULL,
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237 | 1d14ffa9 | bellard | NULL,
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238 | 1d14ffa9 | bellard | NULL,
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239 | 1d14ffa9 | bellard | NULL
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240 | 85571bc7 | bellard | }; |
241 | 85571bc7 | bellard | |
242 | 1d14ffa9 | bellard | struct audio_driver wav_audio_driver = {
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243 | 1d14ffa9 | bellard | INIT_FIELD (name = ) "wav",
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244 | 1d14ffa9 | bellard | INIT_FIELD (descr = ) |
245 | 1d14ffa9 | bellard | "WAV renderer http://wikipedia.org/wiki/WAV",
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246 | 1d14ffa9 | bellard | INIT_FIELD (options = ) wav_options, |
247 | 1d14ffa9 | bellard | INIT_FIELD (init = ) wav_audio_init, |
248 | 1d14ffa9 | bellard | INIT_FIELD (fini = ) wav_audio_fini, |
249 | 1d14ffa9 | bellard | INIT_FIELD (pcm_ops = ) &wav_pcm_ops, |
250 | 1d14ffa9 | bellard | INIT_FIELD (can_be_default = ) 0,
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251 | 1d14ffa9 | bellard | INIT_FIELD (max_voices_out = ) 1,
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252 | 1d14ffa9 | bellard | INIT_FIELD (max_voices_in = ) 0,
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253 | 1d14ffa9 | bellard | INIT_FIELD (voice_size_out = ) sizeof (WAVVoiceOut),
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254 | 1d14ffa9 | bellard | INIT_FIELD (voice_size_in = ) 0
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255 | 85571bc7 | bellard | }; |