root / audio / wavcapture.c @ ea785922
History | View | Annotate | Download (3.9 kB)
1 | 8ead62cf | bellard | #include "vl.h" |
---|---|---|---|
2 | 8ead62cf | bellard | |
3 | 8ead62cf | bellard | typedef struct { |
4 | 8ead62cf | bellard | QEMUFile *f; |
5 | 8ead62cf | bellard | int bytes;
|
6 | ec36b695 | bellard | char *path;
|
7 | ec36b695 | bellard | int freq;
|
8 | ec36b695 | bellard | int bits;
|
9 | ec36b695 | bellard | int nchannels;
|
10 | ec36b695 | bellard | CaptureVoiceOut *cap; |
11 | 8ead62cf | bellard | } WAVState; |
12 | 8ead62cf | bellard | |
13 | 8ead62cf | bellard | /* VICE code: Store number as little endian. */
|
14 | 8ead62cf | bellard | static void le_store (uint8_t *buf, uint32_t val, int len) |
15 | 8ead62cf | bellard | { |
16 | 8ead62cf | bellard | int i;
|
17 | 8ead62cf | bellard | for (i = 0; i < len; i++) { |
18 | 8ead62cf | bellard | buf[i] = (uint8_t) (val & 0xff);
|
19 | 8ead62cf | bellard | val >>= 8;
|
20 | 8ead62cf | bellard | } |
21 | 8ead62cf | bellard | } |
22 | 8ead62cf | bellard | |
23 | ec36b695 | bellard | static void wav_notify (void *opaque, audcnotification_e cmd) |
24 | 8ead62cf | bellard | { |
25 | ec36b695 | bellard | (void) opaque;
|
26 | ec36b695 | bellard | (void) cmd;
|
27 | ec36b695 | bellard | } |
28 | 8ead62cf | bellard | |
29 | ec36b695 | bellard | static void wav_destroy (void *opaque) |
30 | ec36b695 | bellard | { |
31 | ec36b695 | bellard | WAVState *wav = opaque; |
32 | ec36b695 | bellard | uint8_t rlen[4];
|
33 | ec36b695 | bellard | uint8_t dlen[4];
|
34 | ec36b695 | bellard | uint32_t datalen = wav->bytes; |
35 | ec36b695 | bellard | uint32_t rifflen = datalen + 36;
|
36 | 8ead62cf | bellard | |
37 | e84a4fed | bellard | if (wav->f) {
|
38 | e84a4fed | bellard | le_store (rlen, rifflen, 4);
|
39 | e84a4fed | bellard | le_store (dlen, datalen, 4);
|
40 | e84a4fed | bellard | |
41 | e84a4fed | bellard | qemu_fseek (wav->f, 4, SEEK_SET);
|
42 | e84a4fed | bellard | qemu_put_buffer (wav->f, rlen, 4);
|
43 | e84a4fed | bellard | |
44 | e84a4fed | bellard | qemu_fseek (wav->f, 32, SEEK_CUR);
|
45 | e84a4fed | bellard | qemu_put_buffer (wav->f, dlen, 4);
|
46 | e84a4fed | bellard | qemu_fclose (wav->f); |
47 | 8ead62cf | bellard | } |
48 | e84a4fed | bellard | |
49 | e84a4fed | bellard | qemu_free (wav->path); |
50 | 8ead62cf | bellard | } |
51 | 8ead62cf | bellard | |
52 | ec36b695 | bellard | static void wav_capture (void *opaque, void *buf, int size) |
53 | 8ead62cf | bellard | { |
54 | 8ead62cf | bellard | WAVState *wav = opaque; |
55 | 8ead62cf | bellard | |
56 | 8ead62cf | bellard | qemu_put_buffer (wav->f, buf, size); |
57 | 8ead62cf | bellard | wav->bytes += size; |
58 | 8ead62cf | bellard | } |
59 | 8ead62cf | bellard | |
60 | ec36b695 | bellard | static void wav_capture_destroy (void *opaque) |
61 | ec36b695 | bellard | { |
62 | ec36b695 | bellard | WAVState *wav = opaque; |
63 | ec36b695 | bellard | |
64 | ec36b695 | bellard | AUD_del_capture (wav->cap, wav); |
65 | ec36b695 | bellard | } |
66 | ec36b695 | bellard | |
67 | ec36b695 | bellard | static void wav_capture_info (void *opaque) |
68 | ec36b695 | bellard | { |
69 | ec36b695 | bellard | WAVState *wav = opaque; |
70 | ec36b695 | bellard | char *path = wav->path;
|
71 | ec36b695 | bellard | |
72 | ec36b695 | bellard | term_printf ("Capturing audio(%d,%d,%d) to %s: %d bytes\n",
|
73 | ec36b695 | bellard | wav->freq, wav->bits, wav->nchannels, |
74 | ec36b695 | bellard | path ? path : "<not available>", wav->bytes);
|
75 | ec36b695 | bellard | } |
76 | ec36b695 | bellard | |
77 | ec36b695 | bellard | static struct capture_ops wav_capture_ops = { |
78 | ec36b695 | bellard | .destroy = wav_capture_destroy, |
79 | ec36b695 | bellard | .info = wav_capture_info |
80 | ec36b695 | bellard | }; |
81 | ec36b695 | bellard | |
82 | ec36b695 | bellard | int wav_start_capture (CaptureState *s, const char *path, int freq, |
83 | ec36b695 | bellard | int bits, int nchannels) |
84 | 8ead62cf | bellard | { |
85 | 8ead62cf | bellard | WAVState *wav; |
86 | 8ead62cf | bellard | uint8_t hdr[] = { |
87 | 8ead62cf | bellard | 0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, |
88 | 8ead62cf | bellard | 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00, |
89 | 8ead62cf | bellard | 0x02, 0x00, 0x44, 0xac, 0x00, 0x00, 0x10, 0xb1, 0x02, 0x00, 0x04, |
90 | 8ead62cf | bellard | 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00 |
91 | 8ead62cf | bellard | }; |
92 | 8ead62cf | bellard | audsettings_t as; |
93 | 8ead62cf | bellard | struct audio_capture_ops ops;
|
94 | ec36b695 | bellard | int stereo, bits16, shift;
|
95 | ec36b695 | bellard | CaptureVoiceOut *cap; |
96 | ec36b695 | bellard | |
97 | ec36b695 | bellard | if (bits != 8 && bits != 16) { |
98 | ec36b695 | bellard | term_printf ("incorrect bit count %d, must be 8 or 16\n", bits);
|
99 | ec36b695 | bellard | return -1; |
100 | ec36b695 | bellard | } |
101 | ec36b695 | bellard | |
102 | ec36b695 | bellard | if (nchannels != 1 && nchannels != 2) { |
103 | 47dbd1f3 | bellard | term_printf ("incorrect channel count %d, must be 1 or 2\n",
|
104 | 47dbd1f3 | bellard | nchannels); |
105 | ec36b695 | bellard | return -1; |
106 | ec36b695 | bellard | } |
107 | 8ead62cf | bellard | |
108 | ec36b695 | bellard | stereo = nchannels == 2;
|
109 | ec36b695 | bellard | bits16 = bits == 16;
|
110 | 8ead62cf | bellard | |
111 | 8ead62cf | bellard | as.freq = freq; |
112 | 8ead62cf | bellard | as.nchannels = 1 << stereo;
|
113 | 8ead62cf | bellard | as.fmt = bits16 ? AUD_FMT_S16 : AUD_FMT_U8; |
114 | d929eba5 | bellard | as.endianness = 0;
|
115 | 8ead62cf | bellard | |
116 | ec36b695 | bellard | ops.notify = wav_notify; |
117 | ec36b695 | bellard | ops.capture = wav_capture; |
118 | ec36b695 | bellard | ops.destroy = wav_destroy; |
119 | 8ead62cf | bellard | |
120 | 8ead62cf | bellard | wav = qemu_mallocz (sizeof (*wav));
|
121 | 8ead62cf | bellard | if (!wav) {
|
122 | a3c25997 | bellard | term_printf ("Could not allocate memory for wav capture (%zu bytes)",
|
123 | a3c25997 | bellard | sizeof (*wav));
|
124 | ec36b695 | bellard | return -1; |
125 | 8ead62cf | bellard | } |
126 | 8ead62cf | bellard | |
127 | 8ead62cf | bellard | shift = bits16 + stereo; |
128 | 8ead62cf | bellard | hdr[34] = bits16 ? 0x10 : 0x08; |
129 | 8ead62cf | bellard | |
130 | 8ead62cf | bellard | le_store (hdr + 22, as.nchannels, 2); |
131 | 8ead62cf | bellard | le_store (hdr + 24, freq, 4); |
132 | 8ead62cf | bellard | le_store (hdr + 28, freq << shift, 4); |
133 | 8ead62cf | bellard | le_store (hdr + 32, 1 << shift, 2); |
134 | 8ead62cf | bellard | |
135 | e70332b3 | bellard | wav->f = qemu_fopen (path, "wb");
|
136 | 8ead62cf | bellard | if (!wav->f) {
|
137 | ec36b695 | bellard | term_printf ("Failed to open wave file `%s'\nReason: %s\n",
|
138 | ec36b695 | bellard | path, strerror (errno)); |
139 | 8ead62cf | bellard | qemu_free (wav); |
140 | ec36b695 | bellard | return -1; |
141 | 8ead62cf | bellard | } |
142 | 8ead62cf | bellard | |
143 | ec36b695 | bellard | wav->path = qemu_strdup (path); |
144 | ec36b695 | bellard | wav->bits = bits; |
145 | ec36b695 | bellard | wav->nchannels = nchannels; |
146 | ec36b695 | bellard | wav->freq = freq; |
147 | ec36b695 | bellard | |
148 | 8ead62cf | bellard | qemu_put_buffer (wav->f, hdr, sizeof (hdr));
|
149 | ec36b695 | bellard | |
150 | ec36b695 | bellard | cap = AUD_add_capture (NULL, &as, &ops, wav);
|
151 | ec36b695 | bellard | if (!cap) {
|
152 | ec36b695 | bellard | term_printf ("Failed to add audio capture\n");
|
153 | e84a4fed | bellard | qemu_free (wav->path); |
154 | e84a4fed | bellard | qemu_fclose (wav->f); |
155 | ec36b695 | bellard | qemu_free (wav); |
156 | ec36b695 | bellard | return -1; |
157 | ec36b695 | bellard | } |
158 | ec36b695 | bellard | |
159 | ec36b695 | bellard | wav->cap = cap; |
160 | ec36b695 | bellard | s->opaque = wav; |
161 | ec36b695 | bellard | s->ops = wav_capture_ops; |
162 | ec36b695 | bellard | return 0; |
163 | 8ead62cf | bellard | } |