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Diffstat (limited to 'src/io/sink_apple_audio.c')
-rw-r--r--src/io/sink_apple_audio.c260
1 files changed, 260 insertions, 0 deletions
diff --git a/src/io/sink_apple_audio.c b/src/io/sink_apple_audio.c
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+++ b/src/io/sink_apple_audio.c
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+/*
+ 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 "config.h"
+
+#ifdef HAVE_SINK_APPLE_AUDIO
+
+#include "aubio_priv.h"
+#include "fvec.h"
+#include "fmat.h"
+#include "io/sink_apple_audio.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) {
+ 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;
+
+ // negative samplerate given, abort
+ if ((sint_t)samplerate < 0) goto beach;
+ // zero samplerate given. do not open yet
+ if ((sint_t)samplerate == 0) return s;
+
+ 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 ((sint_t)(samplerate) <= 0) 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 ((sint_t)(channels) <= 0) 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 */
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