--- /dev/null
+/*
+ Copyright (C) 2012 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/>.
+
+*/
+
+#ifdef __APPLE__
+#include "config.h"
+#include "aubio_priv.h"
+#include "fvec.h"
+#include "io/source_apple_audio.h"
+
+// CFURLRef, CFURLCreateWithFileSystemPath, ...
+#include <CoreFoundation/CoreFoundation.h>
+// ExtAudioFileRef, AudioStreamBasicDescription, AudioBufferList, ...
+#include <AudioToolbox/AudioToolbox.h>
+
+#define RT_BYTE1( a ) ( (a) & 0xff )
+#define RT_BYTE2( a ) ( ((a) >> 8) & 0xff )
+#define RT_BYTE3( a ) ( ((a) >> 16) & 0xff )
+#define RT_BYTE4( a ) ( ((a) >> 24) & 0xff )
+
+#define SHORT_TO_FLOAT(x) (smpl_t)(x * 3.0517578125e-05)
+
+struct _aubio_source_apple_audio_t {
+ uint_t channels;
+ uint_t samplerate;
+ uint_t block_size;
+
+ char_t *path;
+
+ ExtAudioFileRef audioFile;
+ AudioStreamBasicDescription fileFormat;
+ AudioBufferList bufferList;
+};
+
+static int createAubioBufferList(AudioBufferList *bufferList, int channels, int segmentSize);
+static void freeAudioBufferList(AudioBufferList *bufferList);
+static CFURLRef getURLFromPath(const char * path);
+
+aubio_source_apple_audio_t * new_aubio_source_apple_audio(char_t * path, uint_t samplerate, uint_t block_size)
+{
+ aubio_source_apple_audio_t * s = AUBIO_NEW(aubio_source_apple_audio_t);
+
+ s->path = path;
+ s->samplerate = samplerate;
+ s->block_size = block_size;
+ s->channels = 1;
+
+ OSStatus err = noErr;
+ UInt32 propSize;
+
+ AudioStreamBasicDescription clientFormat;
+ propSize = sizeof(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;
+
+ // open the resource url
+ CFURLRef fileURL = getURLFromPath(path);
+ err = ExtAudioFileOpenURL(fileURL, &s->audioFile);
+ if (err) { AUBIO_ERR("error when trying to access %s, in ExtAudioFileOpenURL, %d\n", s->path, (int)err); goto beach;}
+
+ // create an empty AudioStreamBasicDescription
+ AudioStreamBasicDescription fileFormat;
+ propSize = sizeof(fileFormat);
+ memset(&fileFormat, 0, sizeof(AudioStreamBasicDescription));
+
+ // fill it with the file description
+ err = ExtAudioFileGetProperty(s->audioFile,
+ kExtAudioFileProperty_FileDataFormat, &propSize, &fileFormat);
+ if (err) { AUBIO_ERROR("error in ExtAudioFileGetProperty, %d\n", (int)err); goto beach;}
+
+ // set the client format description
+ err = ExtAudioFileSetProperty(s->audioFile, kExtAudioFileProperty_ClientDataFormat,
+ propSize, &clientFormat);
+ if (err) { fprintf(stderr, "error in ExtAudioFileSetProperty, %d\n", (int)err); goto beach;}
+
+ // print client and format descriptions
+ AUBIO_DBG("Opened %s\n", s->path);
+ AUBIO_DBG("file/client Format.mFormatID: : %3c%c%c%c / %c%c%c%c\n",
+ (int)RT_BYTE4(fileFormat.mFormatID), (int)RT_BYTE3(fileFormat.mFormatID), (int)RT_BYTE2(fileFormat.mFormatID), (int)RT_BYTE1(fileFormat.mFormatID),
+ (int)RT_BYTE4(clientFormat.mFormatID), (int)RT_BYTE3(clientFormat.mFormatID), (int)RT_BYTE2(clientFormat.mFormatID), (int)RT_BYTE1(clientFormat.mFormatID)
+ );
+
+ AUBIO_DBG("file/client Format.mSampleRate : %6.0f / %.0f\n", fileFormat.mSampleRate , clientFormat.mSampleRate);
+ AUBIO_DBG("file/client Format.mFormatFlags : %6d / %d\n", (int)fileFormat.mFormatFlags , (int)clientFormat.mFormatFlags);
+ AUBIO_DBG("file/client Format.mChannelsPerFrame : %6d / %d\n", (int)fileFormat.mChannelsPerFrame, (int)clientFormat.mChannelsPerFrame);
+ AUBIO_DBG("file/client Format.mBitsPerChannel : %6d / %d\n", (int)fileFormat.mBitsPerChannel , (int)clientFormat.mBitsPerChannel);
+ AUBIO_DBG("file/client Format.mFramesPerPacket : %6d / %d\n", (int)fileFormat.mFramesPerPacket , (int)clientFormat.mFramesPerPacket);
+ AUBIO_DBG("file/client Format.mBytesPerFrame : %6d / %d\n", (int)fileFormat.mBytesPerFrame , (int)clientFormat.mBytesPerFrame);
+ AUBIO_DBG("file/client Format.mBytesPerPacket : %6d / %d\n", (int)fileFormat.mBytesPerPacket , (int)clientFormat.mBytesPerPacket);
+ AUBIO_DBG("file/client Format.mReserved : %6d / %d\n", (int)fileFormat.mReserved , (int)clientFormat.mReserved);
+
+ // compute the size of the segments needed to read the input file
+ UInt32 samples = s->block_size * clientFormat.mChannelsPerFrame;
+ Float64 rateRatio = clientFormat.mSampleRate / fileFormat.mSampleRate;
+ uint_t segmentSize= (uint_t)(samples * rateRatio + .5);
+ if (rateRatio < 1.) {
+ segmentSize = (uint_t)(samples / rateRatio + .5);
+ } else if (rateRatio > 1.) {
+ AUBIO_WRN("up-sampling %s from %0.2fHz to %0.2fHz\n", s->path, fileFormat.mSampleRate, clientFormat.mSampleRate);
+ } else {
+ assert (segmentSize == samples );
+ //AUBIO_DBG("not resampling, segmentSize %d, block_size %d\n", segmentSize, s->block_size);
+ }
+
+ // allocate the AudioBufferList
+ if (createAubioBufferList(&s->bufferList, s->channels, segmentSize)) err = -1;
+
+ return s;
+
+beach:
+ AUBIO_FREE(s);
+ return NULL;
+}
+
+void aubio_source_apple_audio_do(aubio_source_apple_audio_t *s, fvec_t * read_to, uint_t * read) {
+ UInt32 c, v, loadedPackets = s->block_size;
+ OSStatus err = ExtAudioFileRead(s->audioFile, &loadedPackets, &s->bufferList);
+ if (err) { AUBIO_ERROR("error in ExtAudioFileRead, %d\n", (int)err); goto beach;}
+
+ smpl_t *buf = read_to->data;
+
+ short *data = (short*)s->bufferList.mBuffers[0].mData;
+
+ if (buf) {
+ for (c = 0; c < s->channels; c++) {
+ for (v = 0; v < s->block_size; v++) {
+ if (v < loadedPackets) {
+ buf[v * s->channels + c] =
+ SHORT_TO_FLOAT(data[ v * s->channels + c]);
+ } else {
+ buf[v * s->channels + c] = 0.f;
+ }
+ }
+ }
+ }
+ //if (loadedPackets < s->block_size) return EOF;
+ *read = (uint_t)loadedPackets;
+ return;
+beach:
+ *read = 0;
+ return;
+}
+
+static int createAubioBufferList(AudioBufferList * bufferList, int channels, int segmentSize) {
+ bufferList->mNumberBuffers = 1;
+ bufferList->mBuffers[0].mNumberChannels = channels;
+ bufferList->mBuffers[0].mData = (short *)malloc(segmentSize * sizeof(short));
+ bufferList->mBuffers[0].mDataByteSize = segmentSize * sizeof(short);
+ return 0;
+}
+
+static void freeAudioBufferList(AudioBufferList *bufferList) {
+ UInt32 i = 0;
+ if (!bufferList) return;
+ for (i = 0; i < bufferList->mNumberBuffers; i++) {
+ if (bufferList->mBuffers[i].mData) {
+ free (bufferList->mBuffers[i].mData);
+ bufferList->mBuffers[i].mData = NULL;
+ }
+ }
+ bufferList = NULL;
+}
+
+static CFURLRef getURLFromPath(const char * path) {
+ CFStringRef cfTotalPath = CFStringCreateWithCString (kCFAllocatorDefault,
+ path, kCFStringEncodingUTF8);
+
+ return CFURLCreateWithFileSystemPath(kCFAllocatorDefault, cfTotalPath,
+ kCFURLPOSIXPathStyle, false);
+}
+
+
+void del_aubio_source_apple_audio(aubio_source_apple_audio_t * s){
+ OSStatus err = noErr;
+ if (!s || !s->audioFile) { return; }
+ err = ExtAudioFileDispose(s->audioFile);
+ if (err) AUBIO_ERROR("error in ExtAudioFileDispose, %d\n", (int)err);
+ s->audioFile = NULL;
+ freeAudioBufferList(&s->bufferList);
+ AUBIO_FREE(s);
+ return;
+}
+
+#endif /* __APPLE__ */
projects / aubio.git / commitdiff