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