root / audio / wavcapture.c @ 678803ab
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1 | 87ecb68b | pbrook | #include "hw/hw.h" |
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2 | 87ecb68b | pbrook | #include "console.h" |
3 | 87ecb68b | pbrook | #include "audio.h" |
4 | 8ead62cf | bellard | |
5 | 8ead62cf | bellard | typedef struct { |
6 | 8ead62cf | bellard | QEMUFile *f; |
7 | 8ead62cf | bellard | int bytes;
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8 | ec36b695 | bellard | char *path;
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9 | ec36b695 | bellard | int freq;
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10 | ec36b695 | bellard | int bits;
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11 | ec36b695 | bellard | int nchannels;
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12 | ec36b695 | bellard | CaptureVoiceOut *cap; |
13 | 8ead62cf | bellard | } WAVState; |
14 | 8ead62cf | bellard | |
15 | 8ead62cf | bellard | /* VICE code: Store number as little endian. */
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16 | 8ead62cf | bellard | static void le_store (uint8_t *buf, uint32_t val, int len) |
17 | 8ead62cf | bellard | { |
18 | 8ead62cf | bellard | int i;
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19 | 8ead62cf | bellard | for (i = 0; i < len; i++) { |
20 | 8ead62cf | bellard | buf[i] = (uint8_t) (val & 0xff);
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21 | 8ead62cf | bellard | val >>= 8;
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22 | 8ead62cf | bellard | } |
23 | 8ead62cf | bellard | } |
24 | 8ead62cf | bellard | |
25 | ec36b695 | bellard | static void wav_notify (void *opaque, audcnotification_e cmd) |
26 | 8ead62cf | bellard | { |
27 | ec36b695 | bellard | (void) opaque;
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28 | ec36b695 | bellard | (void) cmd;
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29 | ec36b695 | bellard | } |
30 | 8ead62cf | bellard | |
31 | ec36b695 | bellard | static void wav_destroy (void *opaque) |
32 | ec36b695 | bellard | { |
33 | ec36b695 | bellard | WAVState *wav = opaque; |
34 | ec36b695 | bellard | uint8_t rlen[4];
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35 | ec36b695 | bellard | uint8_t dlen[4];
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36 | ec36b695 | bellard | uint32_t datalen = wav->bytes; |
37 | ec36b695 | bellard | uint32_t rifflen = datalen + 36;
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38 | 8ead62cf | bellard | |
39 | e84a4fed | bellard | if (wav->f) {
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40 | e84a4fed | bellard | le_store (rlen, rifflen, 4);
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41 | e84a4fed | bellard | le_store (dlen, datalen, 4);
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42 | f941aa25 | ths | |
43 | e84a4fed | bellard | qemu_fseek (wav->f, 4, SEEK_SET);
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44 | e84a4fed | bellard | qemu_put_buffer (wav->f, rlen, 4);
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45 | f941aa25 | ths | |
46 | e84a4fed | bellard | qemu_fseek (wav->f, 32, SEEK_CUR);
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47 | e84a4fed | bellard | qemu_put_buffer (wav->f, dlen, 4);
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48 | e84a4fed | bellard | qemu_fclose (wav->f); |
49 | 8ead62cf | bellard | } |
50 | f941aa25 | ths | |
51 | e84a4fed | bellard | qemu_free (wav->path); |
52 | 8ead62cf | bellard | } |
53 | 8ead62cf | bellard | |
54 | ec36b695 | bellard | static void wav_capture (void *opaque, void *buf, int size) |
55 | 8ead62cf | bellard | { |
56 | 8ead62cf | bellard | WAVState *wav = opaque; |
57 | 8ead62cf | bellard | |
58 | 8ead62cf | bellard | qemu_put_buffer (wav->f, buf, size); |
59 | 8ead62cf | bellard | wav->bytes += size; |
60 | 8ead62cf | bellard | } |
61 | 8ead62cf | bellard | |
62 | ec36b695 | bellard | static void wav_capture_destroy (void *opaque) |
63 | ec36b695 | bellard | { |
64 | ec36b695 | bellard | WAVState *wav = opaque; |
65 | ec36b695 | bellard | |
66 | ec36b695 | bellard | AUD_del_capture (wav->cap, wav); |
67 | ec36b695 | bellard | } |
68 | ec36b695 | bellard | |
69 | ec36b695 | bellard | static void wav_capture_info (void *opaque) |
70 | ec36b695 | bellard | { |
71 | ec36b695 | bellard | WAVState *wav = opaque; |
72 | ec36b695 | bellard | char *path = wav->path;
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73 | ec36b695 | bellard | |
74 | ec36b695 | bellard | term_printf ("Capturing audio(%d,%d,%d) to %s: %d bytes\n",
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75 | ec36b695 | bellard | wav->freq, wav->bits, wav->nchannels, |
76 | ec36b695 | bellard | path ? path : "<not available>", wav->bytes);
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77 | ec36b695 | bellard | } |
78 | ec36b695 | bellard | |
79 | ec36b695 | bellard | static struct capture_ops wav_capture_ops = { |
80 | ec36b695 | bellard | .destroy = wav_capture_destroy, |
81 | ec36b695 | bellard | .info = wav_capture_info |
82 | ec36b695 | bellard | }; |
83 | ec36b695 | bellard | |
84 | ec36b695 | bellard | int wav_start_capture (CaptureState *s, const char *path, int freq, |
85 | ec36b695 | bellard | int bits, int nchannels) |
86 | 8ead62cf | bellard | { |
87 | 8ead62cf | bellard | WAVState *wav; |
88 | 8ead62cf | bellard | uint8_t hdr[] = { |
89 | 8ead62cf | bellard | 0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, |
90 | 8ead62cf | bellard | 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00, |
91 | 8ead62cf | bellard | 0x02, 0x00, 0x44, 0xac, 0x00, 0x00, 0x10, 0xb1, 0x02, 0x00, 0x04, |
92 | 8ead62cf | bellard | 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00 |
93 | 8ead62cf | bellard | }; |
94 | 8ead62cf | bellard | audsettings_t as; |
95 | 8ead62cf | bellard | struct audio_capture_ops ops;
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96 | ec36b695 | bellard | int stereo, bits16, shift;
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97 | ec36b695 | bellard | CaptureVoiceOut *cap; |
98 | ec36b695 | bellard | |
99 | ec36b695 | bellard | if (bits != 8 && bits != 16) { |
100 | ec36b695 | bellard | term_printf ("incorrect bit count %d, must be 8 or 16\n", bits);
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101 | ec36b695 | bellard | return -1; |
102 | ec36b695 | bellard | } |
103 | ec36b695 | bellard | |
104 | ec36b695 | bellard | if (nchannels != 1 && nchannels != 2) { |
105 | 47dbd1f3 | bellard | term_printf ("incorrect channel count %d, must be 1 or 2\n",
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106 | 47dbd1f3 | bellard | nchannels); |
107 | ec36b695 | bellard | return -1; |
108 | ec36b695 | bellard | } |
109 | 8ead62cf | bellard | |
110 | ec36b695 | bellard | stereo = nchannels == 2;
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111 | ec36b695 | bellard | bits16 = bits == 16;
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112 | 8ead62cf | bellard | |
113 | 8ead62cf | bellard | as.freq = freq; |
114 | 8ead62cf | bellard | as.nchannels = 1 << stereo;
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115 | 8ead62cf | bellard | as.fmt = bits16 ? AUD_FMT_S16 : AUD_FMT_U8; |
116 | d929eba5 | bellard | as.endianness = 0;
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117 | 8ead62cf | bellard | |
118 | ec36b695 | bellard | ops.notify = wav_notify; |
119 | ec36b695 | bellard | ops.capture = wav_capture; |
120 | ec36b695 | bellard | ops.destroy = wav_destroy; |
121 | 8ead62cf | bellard | |
122 | 8ead62cf | bellard | wav = qemu_mallocz (sizeof (*wav));
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123 | 8ead62cf | bellard | if (!wav) {
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124 | a3c25997 | bellard | term_printf ("Could not allocate memory for wav capture (%zu bytes)",
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125 | a3c25997 | bellard | sizeof (*wav));
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126 | ec36b695 | bellard | return -1; |
127 | 8ead62cf | bellard | } |
128 | 8ead62cf | bellard | |
129 | 8ead62cf | bellard | shift = bits16 + stereo; |
130 | 8ead62cf | bellard | hdr[34] = bits16 ? 0x10 : 0x08; |
131 | 8ead62cf | bellard | |
132 | 8ead62cf | bellard | le_store (hdr + 22, as.nchannels, 2); |
133 | 8ead62cf | bellard | le_store (hdr + 24, freq, 4); |
134 | 8ead62cf | bellard | le_store (hdr + 28, freq << shift, 4); |
135 | 8ead62cf | bellard | le_store (hdr + 32, 1 << shift, 2); |
136 | 8ead62cf | bellard | |
137 | e70332b3 | bellard | wav->f = qemu_fopen (path, "wb");
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138 | 8ead62cf | bellard | if (!wav->f) {
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139 | ec36b695 | bellard | term_printf ("Failed to open wave file `%s'\nReason: %s\n",
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140 | ec36b695 | bellard | path, strerror (errno)); |
141 | 8ead62cf | bellard | qemu_free (wav); |
142 | ec36b695 | bellard | return -1; |
143 | 8ead62cf | bellard | } |
144 | 8ead62cf | bellard | |
145 | ec36b695 | bellard | wav->path = qemu_strdup (path); |
146 | ec36b695 | bellard | wav->bits = bits; |
147 | ec36b695 | bellard | wav->nchannels = nchannels; |
148 | ec36b695 | bellard | wav->freq = freq; |
149 | ec36b695 | bellard | |
150 | 8ead62cf | bellard | qemu_put_buffer (wav->f, hdr, sizeof (hdr));
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151 | ec36b695 | bellard | |
152 | ec36b695 | bellard | cap = AUD_add_capture (NULL, &as, &ops, wav);
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153 | ec36b695 | bellard | if (!cap) {
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154 | ec36b695 | bellard | term_printf ("Failed to add audio capture\n");
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155 | e84a4fed | bellard | qemu_free (wav->path); |
156 | e84a4fed | bellard | qemu_fclose (wav->f); |
157 | ec36b695 | bellard | qemu_free (wav); |
158 | ec36b695 | bellard | return -1; |
159 | ec36b695 | bellard | } |
160 | ec36b695 | bellard | |
161 | ec36b695 | bellard | wav->cap = cap; |
162 | ec36b695 | bellard | s->opaque = wav; |
163 | ec36b695 | bellard | s->ops = wav_capture_ops; |
164 | ec36b695 | bellard | return 0; |
165 | 8ead62cf | bellard | } |