ref: a2b6523e921bb0e30812d73386b3ded412aaa648
dir: /src/io/sink_apple_audio.c/
/*
Copyright (C) 2012-2014 Paul Brossier <piem@aubio.org>
This file is part of aubio.
aubio is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
aubio is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with aubio. If not, see <http://www.gnu.org/licenses/>.
*/
#include "aubio_priv.h"
#ifdef HAVE_SINK_APPLE_AUDIO
#include "fvec.h"
#include "fmat.h"
#include "io/sink_apple_audio.h"
#include "io/ioutils.h"
// CFURLRef, CFURLCreateWithFileSystemPath, ...
#include <CoreFoundation/CoreFoundation.h>
// ExtAudioFileRef, AudioStreamBasicDescription, AudioBufferList, ...
#include <AudioToolbox/AudioToolbox.h>
#define FLOAT_TO_SHORT(x) (short)(x * 32768)
extern int createAubioBufferList(AudioBufferList *bufferList, int channels, int segmentSize);
extern void freeAudioBufferList(AudioBufferList *bufferList);
extern CFURLRef createURLFromPath(const char * path);
char_t *getPrintableOSStatusError(char_t *str, OSStatus error);
uint_t aubio_sink_apple_audio_open(aubio_sink_apple_audio_t *s);
#define MAX_SIZE 4096 // the maximum number of frames that can be written at a time
void aubio_sink_apple_audio_write(aubio_sink_apple_audio_t *s, uint_t write);
struct _aubio_sink_apple_audio_t {
uint_t samplerate;
uint_t channels;
char_t *path;
uint_t max_frames;
AudioBufferList bufferList;
ExtAudioFileRef audioFile;
bool async;
};
aubio_sink_apple_audio_t * new_aubio_sink_apple_audio(const char_t * uri, uint_t samplerate) {
aubio_sink_apple_audio_t * s = AUBIO_NEW(aubio_sink_apple_audio_t);
s->max_frames = MAX_SIZE;
s->async = false;
if ( (uri == NULL) || (strlen(uri) < 1) ) {
AUBIO_ERROR("sink_apple_audio: Aborted opening null path\n");
goto beach;
}
if (s->path != NULL) AUBIO_FREE(s->path);
s->path = AUBIO_ARRAY(char_t, strnlen(uri, PATH_MAX) + 1);
strncpy(s->path, uri, strnlen(uri, PATH_MAX) + 1);
s->samplerate = 0;
s->channels = 0;
// zero samplerate given. do not open yet
if ((sint_t)samplerate == 0) {
return s;
}
// invalid samplerate given, abort
if (aubio_io_validate_samplerate("sink_apple_audio", s->path, samplerate)) {
goto beach;
}
s->samplerate = samplerate;
s->channels = 1;
if (aubio_sink_apple_audio_open(s) != AUBIO_OK) {
// open failed, abort
goto beach;
}
return s;
beach:
AUBIO_FREE(s);
return NULL;
}
uint_t aubio_sink_apple_audio_preset_samplerate(aubio_sink_apple_audio_t *s, uint_t samplerate)
{
if (aubio_io_validate_samplerate("sink_apple_audio", s->path, samplerate)) {
return AUBIO_FAIL;
}
s->samplerate = samplerate;
// automatically open when both samplerate and channels have been set
if (s->samplerate != 0 && s->channels != 0) {
return aubio_sink_apple_audio_open(s);
}
return AUBIO_OK;
}
uint_t aubio_sink_apple_audio_preset_channels(aubio_sink_apple_audio_t *s, uint_t channels)
{
if (aubio_io_validate_channels("sink_apple_audio", s->path, channels)) {
return AUBIO_FAIL;
}
s->channels = channels;
// automatically open when both samplerate and channels have been set
if (s->samplerate != 0 && s->channels != 0) {
return aubio_sink_apple_audio_open(s);
}
return AUBIO_OK;
}
uint_t aubio_sink_apple_audio_get_samplerate(const aubio_sink_apple_audio_t *s)
{
return s->samplerate;
}
uint_t aubio_sink_apple_audio_get_channels(const aubio_sink_apple_audio_t *s)
{
return s->channels;
}
uint_t aubio_sink_apple_audio_open(aubio_sink_apple_audio_t *s) {
if (s->samplerate == 0 || s->channels == 0) return AUBIO_FAIL;
AudioStreamBasicDescription clientFormat;
memset(&clientFormat, 0, sizeof(AudioStreamBasicDescription));
clientFormat.mFormatID = kAudioFormatLinearPCM;
clientFormat.mSampleRate = (Float64)(s->samplerate);
clientFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
clientFormat.mChannelsPerFrame = s->channels;
clientFormat.mBitsPerChannel = sizeof(short) * 8;
clientFormat.mFramesPerPacket = 1;
clientFormat.mBytesPerFrame = clientFormat.mBitsPerChannel * clientFormat.mChannelsPerFrame / 8;
clientFormat.mBytesPerPacket = clientFormat.mFramesPerPacket * clientFormat.mBytesPerFrame;
clientFormat.mReserved = 0;
AudioFileTypeID fileType = kAudioFileWAVEType;
CFURLRef fileURL = createURLFromPath(s->path);
bool overwrite = true;
OSStatus err = noErr;
err = ExtAudioFileCreateWithURL(fileURL, fileType, &clientFormat, NULL,
overwrite ? kAudioFileFlags_EraseFile : 0, &s->audioFile);
CFRelease(fileURL);
if (err) {
char_t errorstr[20];
AUBIO_ERR("sink_apple_audio: error when trying to create %s with "
"ExtAudioFileCreateWithURL (%s)\n", s->path,
getPrintableOSStatusError(errorstr, err));
goto beach;
}
if (createAubioBufferList(&s->bufferList, s->channels, s->max_frames * s->channels)) {
AUBIO_ERR("sink_apple_audio: error when creating buffer list for %s, "
"out of memory? \n", s->path);
goto beach;
}
return AUBIO_OK;
beach:
return AUBIO_FAIL;
}
void aubio_sink_apple_audio_do(aubio_sink_apple_audio_t * s, fvec_t * write_data, uint_t write) {
UInt32 c, v;
short *data = (short*)s->bufferList.mBuffers[0].mData;
if (write > s->max_frames) {
AUBIO_WRN("sink_apple_audio: trying to write %d frames, max %d\n", write, s->max_frames);
write = s->max_frames;
}
smpl_t *buf = write_data->data;
if (buf) {
for (c = 0; c < s->channels; c++) {
for (v = 0; v < write; v++) {
data[v * s->channels + c] =
FLOAT_TO_SHORT(buf[ v * s->channels + c]);
}
}
}
aubio_sink_apple_audio_write(s, write);
}
void aubio_sink_apple_audio_do_multi(aubio_sink_apple_audio_t * s, fmat_t * write_data, uint_t write) {
UInt32 c, v;
short *data = (short*)s->bufferList.mBuffers[0].mData;
if (write > s->max_frames) {
AUBIO_WRN("sink_apple_audio: trying to write %d frames, max %d\n", write, s->max_frames);
write = s->max_frames;
}
smpl_t **buf = write_data->data;
if (buf) {
for (c = 0; c < s->channels; c++) {
for (v = 0; v < write; v++) {
data[v * s->channels + c] =
FLOAT_TO_SHORT(buf[c][v]);
}
}
}
aubio_sink_apple_audio_write(s, write);
}
void aubio_sink_apple_audio_write(aubio_sink_apple_audio_t *s, uint_t write) {
OSStatus err = noErr;
if (s->async) {
err = ExtAudioFileWriteAsync(s->audioFile, write, &s->bufferList);
if (err) {
char_t errorstr[20];
if (err == kExtAudioFileError_AsyncWriteBufferOverflow) {
sprintf(errorstr,"buffer overflow");
} else if (err == kExtAudioFileError_AsyncWriteTooLarge) {
sprintf(errorstr,"write too large");
} else {
// unknown error
getPrintableOSStatusError(errorstr, err);
}
AUBIO_ERROR("sink_apple_audio: error while writing %s "
"in ExtAudioFileWriteAsync (%s)\n", s->path, errorstr);
}
} else {
err = ExtAudioFileWrite(s->audioFile, write, &s->bufferList);
if (err) {
char_t errorstr[20];
AUBIO_ERROR("sink_apple_audio: error while writing %s "
"in ExtAudioFileWrite (%s)\n", s->path,
getPrintableOSStatusError(errorstr, err));
}
}
}
uint_t aubio_sink_apple_audio_close(aubio_sink_apple_audio_t * s) {
OSStatus err = noErr;
if (!s->audioFile) {
return AUBIO_FAIL;
}
err = ExtAudioFileDispose(s->audioFile);
if (err) {
char_t errorstr[20];
AUBIO_ERROR("sink_apple_audio: error while closing %s "
"in ExtAudioFileDispose (%s)\n", s->path,
getPrintableOSStatusError(errorstr, err));
}
s->audioFile = NULL;
return err;
}
void del_aubio_sink_apple_audio(aubio_sink_apple_audio_t * s) {
if (s->audioFile) aubio_sink_apple_audio_close (s);
if (s->path) AUBIO_FREE(s->path);
freeAudioBufferList(&s->bufferList);
AUBIO_FREE(s);
return;
}
#endif /* HAVE_SINK_APPLE_AUDIO */