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audio capture to wab files (malc)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2059 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-07-16 18:57:03 +00:00
parent 6330126439
commit ec36b695b0
8 changed files with 321 additions and 93 deletions
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126
audio/wavcapture.c
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@ -3,6 +3,11 @@
typedef struct {
QEMUFile *f;
int bytes;
char *path;
int freq;
int bits;
int nchannels;
CaptureVoiceOut *cap;
} WAVState;
/* VICE code: Store number as little endian. */
@ -15,35 +20,39 @@ static void le_store (uint8_t *buf, uint32_t val, int len)
}
}
static void wav_state_cb (void *opaque, int enabled)
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 (!enabled) {
uint8_t rlen[4];
uint8_t dlen[4];
uint32_t datalen = wav->bytes;
uint32_t rifflen = datalen + 36;
if (!wav->f) {
return;
}
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);
if (!wav->f) {
return;
}
else {
qemu_fseek (wav->f, 0, SEEK_END);
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);
fclose (wav->f);
if (wav->path) {
qemu_free (wav->path);
}
}
static void wav_capture_cb (void *opaque, void *buf, int size)
static void wav_capture (void *opaque, void *buf, int size)
{
WAVState *wav = opaque;
@ -51,7 +60,30 @@ static void wav_capture_cb (void *opaque, void *buf, int size)
wav->bytes += size;
}
void wav_capture (const char *path, int freq, int bits16, int stereo)
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[] = {
@ -62,23 +94,35 @@ void wav_capture (const char *path, int freq, int bits16, int stereo)
};
audsettings_t as;
struct audio_capture_ops ops;
int shift;
int stereo, bits16, shift;
CaptureVoiceOut *cap;
stereo = !!stereo;
bits16 = !!bits16;
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", bits);
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.state = wav_state_cb;
ops.capture = wav_capture_cb;
ops.notify = wav_notify;
ops.capture = wav_capture;
ops.destroy = wav_destroy;
wav = qemu_mallocz (sizeof (*wav));
if (!wav) {
AUD_log ("wav", "Could not allocate memory (%zu bytes)", sizeof (*wav));
return;
return -1;
}
shift = bits16 + stereo;
@ -91,12 +135,28 @@ void wav_capture (const char *path, int freq, int bits16, int stereo)
wav->f = fopen (path, "wb");
if (!wav->f) {
AUD_log ("wav", "Failed to open wave file `%s'\nReason: %s\n",
path, strerror (errno));
term_printf ("Failed to open wave file `%s'\nReason: %s\n",
path, strerror (errno));
qemu_free (wav);
return;
return -1;
}
wav->path = qemu_strdup (path);
wav->bits = bits;
wav->nchannels = nchannels;
wav->freq = freq;
qemu_put_buffer (wav->f, hdr, sizeof (hdr));
AUD_add_capture (NULL, &as, &ops, wav);
cap = AUD_add_capture (NULL, &as, &ops, wav);
if (!cap) {
term_printf ("Failed to add audio capture\n");
qemu_free (wav);
return -1;
}
wav->cap = cap;
s->opaque = wav;
s->ops = wav_capture_ops;
return 0;
}