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