#include "vl.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; term_printf ("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) { 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 }; audsettings_t as; struct audio_capture_ops ops; int stereo, bits16, shift; CaptureVoiceOut *cap; if (bits != 8 && bits != 16) { term_printf ("incorrect bit count %d, must be 8 or 16\n", bits); return -1; } if (nchannels != 1 && nchannels != 2) { term_printf ("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)); if (!wav) { term_printf ("Could not allocate memory for wav capture (%zu bytes)", sizeof (*wav)); return -1; } 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) { term_printf ("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) { term_printf ("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; }