#include "qemu/osdep.h" #include "monitor/monitor.h" #include "qapi/error.h" #include "qemu/error-report.h" #include "audio.h" typedef struct { FILE *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); if (fseek (wav->f, 4, SEEK_SET)) { error_report("wav_destroy: rlen fseek failed: %s", strerror(errno)); goto doclose; } if (fwrite (rlen, 4, 1, wav->f) != 1) { error_report("wav_destroy: rlen fwrite failed: %s", strerror(errno)); goto doclose; } if (fseek (wav->f, 32, SEEK_CUR)) { error_report("wav_destroy: dlen fseek failed: %s", strerror(errno)); goto doclose; } if (fwrite (dlen, 1, 4, wav->f) != 4) { error_report("wav_destroy: dlen fwrite failed: %s", strerror(errno)); goto doclose; } doclose: if (fclose (wav->f)) { error_report("wav_destroy: fclose failed: %s", strerror(errno)); } } g_free (wav->path); } static void wav_capture (void *opaque, void *buf, int size) { WAVState *wav = opaque; if (fwrite (buf, size, 1, wav->f) != 1) { error_report("wav_capture: fwrite error: %s", strerror(errno)); } wav->bytes += size; } static void wav_capture_destroy (void *opaque) { WAVState *wav = opaque; AUD_del_capture (wav->cap, wav); g_free (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(AudioState *state, 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 }; struct audsettings as; struct audio_capture_ops ops; int stereo, bits16, shift; CaptureVoiceOut *cap; if (bits != 8 && bits != 16) { error_report("incorrect bit count %d, must be 8 or 16", bits); return -1; } if (nchannels != 1 && nchannels != 2) { error_report("incorrect channel count %d, must be 1 or 2", nchannels); return -1; } stereo = nchannels == 2; bits16 = bits == 16; as.freq = freq; as.nchannels = 1 << stereo; as.fmt = bits16 ? AUDIO_FORMAT_S16 : AUDIO_FORMAT_U8; as.endianness = 0; ops.notify = wav_notify; ops.capture = wav_capture; ops.destroy = wav_destroy; wav = g_malloc0 (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 = fopen (path, "wb"); if (!wav->f) { error_report("Failed to open wave file `%s': %s", path, strerror(errno)); g_free (wav); return -1; } wav->path = g_strdup (path); wav->bits = bits; wav->nchannels = nchannels; wav->freq = freq; if (fwrite (hdr, sizeof (hdr), 1, wav->f) != 1) { error_report("Failed to write header: %s", strerror(errno)); goto error_free; } cap = AUD_add_capture(state, &as, &ops, wav); if (!cap) { error_report("Failed to add audio capture"); goto error_free; } wav->cap = cap; s->opaque = wav; s->ops = wav_capture_ops; return 0; error_free: g_free (wav->path); if (fclose (wav->f)) { error_report("Failed to close wave file: %s", strerror(errno)); } g_free (wav); return -1; }