| #include "hw/hw.h" |
| #include "monitor.h" |
| #include "audio.h" |
| |
| typedef struct { |
| QEMUFile *f; |
| int bytes; |
| char *path; |
| int freq; |
| int bits; |
| int nchannels; |
| CaptureVoiceOut *cap; |
| } WAVState; |
| |
| /* VICE code: Store number as little endian. */ |
| static void le_store (uint8_t *buf, uint32_t val, int len) |
| { |
| int i; |
| for (i = 0; i < len; i++) { |
| buf[i] = (uint8_t) (val & 0xff); |
| val >>= 8; |
| } |
| } |
| |
| static void wav_notify (void *opaque, audcnotification_e cmd) |
| { |
| (void) opaque; |
| (void) cmd; |
| } |
| |
| static void wav_destroy (void *opaque) |
| { |
| WAVState *wav = opaque; |
| uint8_t rlen[4]; |
| uint8_t dlen[4]; |
| uint32_t datalen = wav->bytes; |
| uint32_t rifflen = datalen + 36; |
| |
| if (wav->f) { |
| le_store (rlen, rifflen, 4); |
| le_store (dlen, datalen, 4); |
| |
| qemu_fseek (wav->f, 4, SEEK_SET); |
| qemu_put_buffer (wav->f, rlen, 4); |
| |
| qemu_fseek (wav->f, 32, SEEK_CUR); |
| qemu_put_buffer (wav->f, dlen, 4); |
| qemu_fclose (wav->f); |
| } |
| |
| qemu_free (wav->path); |
| } |
| |
| static void wav_capture (void *opaque, void *buf, int size) |
| { |
| WAVState *wav = opaque; |
| |
| qemu_put_buffer (wav->f, buf, size); |
| wav->bytes += size; |
| } |
| |
| static void wav_capture_destroy (void *opaque) |
| { |
| WAVState *wav = opaque; |
| |
| AUD_del_capture (wav->cap, wav); |
| } |
| |
| static void wav_capture_info (void *opaque) |
| { |
| WAVState *wav = opaque; |
| char *path = wav->path; |
| |
| monitor_printf(cur_mon, "Capturing audio(%d,%d,%d) to %s: %d bytes\n", |
| wav->freq, wav->bits, wav->nchannels, |
| path ? path : "<not available>", wav->bytes); |
| } |
| |
| static struct capture_ops wav_capture_ops = { |
| .destroy = wav_capture_destroy, |
| .info = wav_capture_info |
| }; |
| |
| int wav_start_capture (CaptureState *s, const char *path, int freq, |
| int bits, int nchannels) |
| { |
| Monitor *mon = cur_mon; |
| WAVState *wav; |
| uint8_t hdr[] = { |
| 0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, |
| 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00, |
| 0x02, 0x00, 0x44, 0xac, 0x00, 0x00, 0x10, 0xb1, 0x02, 0x00, 0x04, |
| 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00 |
| }; |
| struct audsettings as; |
| struct audio_capture_ops ops; |
| int stereo, bits16, shift; |
| CaptureVoiceOut *cap; |
| |
| if (bits != 8 && bits != 16) { |
| monitor_printf(mon, "incorrect bit count %d, must be 8 or 16\n", bits); |
| return -1; |
| } |
| |
| if (nchannels != 1 && nchannels != 2) { |
| monitor_printf(mon, "incorrect channel count %d, must be 1 or 2\n", |
| nchannels); |
| return -1; |
| } |
| |
| stereo = nchannels == 2; |
| bits16 = bits == 16; |
| |
| as.freq = freq; |
| as.nchannels = 1 << stereo; |
| as.fmt = bits16 ? AUD_FMT_S16 : AUD_FMT_U8; |
| as.endianness = 0; |
| |
| ops.notify = wav_notify; |
| ops.capture = wav_capture; |
| ops.destroy = wav_destroy; |
| |
| wav = qemu_mallocz (sizeof (*wav)); |
| |
| shift = bits16 + stereo; |
| hdr[34] = bits16 ? 0x10 : 0x08; |
| |
| le_store (hdr + 22, as.nchannels, 2); |
| le_store (hdr + 24, freq, 4); |
| le_store (hdr + 28, freq << shift, 4); |
| le_store (hdr + 32, 1 << shift, 2); |
| |
| wav->f = qemu_fopen (path, "wb"); |
| if (!wav->f) { |
| monitor_printf(mon, "Failed to open wave file `%s'\nReason: %s\n", |
| path, strerror (errno)); |
| qemu_free (wav); |
| return -1; |
| } |
| |
| wav->path = qemu_strdup (path); |
| wav->bits = bits; |
| wav->nchannels = nchannels; |
| wav->freq = freq; |
| |
| qemu_put_buffer (wav->f, hdr, sizeof (hdr)); |
| |
| cap = AUD_add_capture (NULL, &as, &ops, wav); |
| if (!cap) { |
| monitor_printf(mon, "Failed to add audio capture\n"); |
| qemu_free (wav->path); |
| qemu_fclose (wav->f); |
| qemu_free (wav); |
| return -1; |
| } |
| |
| wav->cap = cap; |
| s->opaque = wav; |
| s->ops = wav_capture_ops; |
| return 0; |
| } |