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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:30:32 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:30:32 -0800 |
commit | 8b23a6c7e1aee255004dd19098d4c2462b61b849 (patch) | |
tree | 7a4d682ba51f0ff0364c5ca2509f515bdaf96de9 /audio/wavcapture.c | |
parent | f721e3ac031f892af46f255a47d7f54a91317b30 (diff) | |
download | external_qemu-8b23a6c7e1aee255004dd19098d4c2462b61b849.zip external_qemu-8b23a6c7e1aee255004dd19098d4c2462b61b849.tar.gz external_qemu-8b23a6c7e1aee255004dd19098d4c2462b61b849.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'audio/wavcapture.c')
-rw-r--r-- | audio/wavcapture.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/audio/wavcapture.c b/audio/wavcapture.c new file mode 100644 index 0000000..d6f733e --- /dev/null +++ b/audio/wavcapture.c @@ -0,0 +1,166 @@ +#include "audio/audio.h" +#include "qemu_file.h" +#include "console.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) { + 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); + qemu_fclose (wav->f); + if (wav->path) { + 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", 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.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 -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; +} |