ref: 92c85b124cb91b239b40bb970db2af1357772dd2
dir: /src/io/source_apple_audio.c/
/*
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/>.
*/
#include "aubio_priv.h"
#ifdef HAVE_SOURCE_APPLE_AUDIO
#include "fvec.h"
#include "fmat.h"
#include "io/source_apple_audio.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; //< requested samplerate
uint_t source_samplerate; //< actual source samplerate
uint_t block_size;
char_t *path;
ExtAudioFileRef audioFile;
AudioBufferList bufferList;
};
extern int createAubioBufferList(AudioBufferList *bufferList, int channels, int max_source_samples);
extern void freeAudioBufferList(AudioBufferList *bufferList);
extern CFURLRef createURLFromPath(const char * path);
char_t *getPrintableOSStatusError(char_t *str, OSStatus error);
uint_t aubio_source_apple_audio_open (aubio_source_apple_audio_t *s, const char_t * path);
aubio_source_apple_audio_t * new_aubio_source_apple_audio(const char_t * path, uint_t samplerate, uint_t block_size)
{
aubio_source_apple_audio_t * s = AUBIO_NEW(aubio_source_apple_audio_t);
if (path == NULL) {
AUBIO_ERROR("source_apple_audio: Aborted opening null path\n");
goto beach;
}
if ( (sint_t)block_size <= 0 ) {
AUBIO_ERROR("source_apple_audio: Can not open %s with null or negative block_size %d\n",
path, block_size);
goto beach;
}
if ( (sint_t)samplerate < 0 ) {
AUBIO_ERROR("source_apple_audio: Can not open %s with negative samplerate %d\n",
path, samplerate);
goto beach;
}
s->block_size = block_size;
s->samplerate = samplerate;
if ( aubio_source_apple_audio_open ( s, path ) ) {
goto beach;
}
return s;
beach:
AUBIO_FREE(s);
return NULL;
}
uint_t aubio_source_apple_audio_open (aubio_source_apple_audio_t *s, const char_t * path)
{
OSStatus err = noErr;
UInt32 propSize;
if (s->path) AUBIO_FREE(s->path);
s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
// open the resource url
CFURLRef fileURL = createURLFromPath(s->path);
err = ExtAudioFileOpenURL(fileURL, &s->audioFile);
CFRelease(fileURL);
if (err == -43) {
AUBIO_ERR("source_apple_audio: Failed opening %s, "
"file not found, or no read access\n", s->path);
goto beach;
} else if (err) {
char_t errorstr[20];
AUBIO_ERR("source_apple_audio: Failed opening %s, "
"error in ExtAudioFileOpenURL (%s)\n", s->path,
getPrintableOSStatusError(errorstr, 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) {
char_t errorstr[20];
AUBIO_ERROR("source_apple_audio: Failed opening %s, "
"error in ExtAudioFileGetProperty (%s)\n", s->path,
getPrintableOSStatusError(errorstr, err));
goto beach;
}
if (s->samplerate == 0) {
s->samplerate = fileFormat.mSampleRate;
//AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
}
s->source_samplerate = fileFormat.mSampleRate;
s->channels = fileFormat.mChannelsPerFrame;
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;
// set the client format description
err = ExtAudioFileSetProperty(s->audioFile, kExtAudioFileProperty_ClientDataFormat,
propSize, &clientFormat);
if (err) {
char_t errorstr[20];
AUBIO_ERROR("source_apple_audio: Failed opening %s, "
"error in ExtAudioFileSetProperty (%s)\n", s->path,
getPrintableOSStatusError(errorstr, err));
#if 0
// 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);
#endif
goto beach;
}
smpl_t ratio = s->source_samplerate * 1. / s->samplerate;
if (ratio < 1.) {
AUBIO_WRN("source_apple_audio: up-sampling %s from %0dHz to %0dHz\n",
s->path, s->source_samplerate, s->samplerate);
}
// allocate the AudioBufferList
freeAudioBufferList(&s->bufferList);
if (createAubioBufferList(&s->bufferList, s->channels, s->block_size * s->channels)) {
AUBIO_ERR("source_apple_audio: failed creating bufferList\n");
goto beach;
}
beach:
return err;
}
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) {
char_t errorstr[20];
AUBIO_ERROR("source_apple_audio: error while reading %s "
"with ExtAudioFileRead (%s)\n", s->path,
getPrintableOSStatusError(errorstr, err));
goto beach;
}
short *data = (short*)s->bufferList.mBuffers[0].mData;
smpl_t *buf = read_to->data;
for (v = 0; v < loadedPackets; v++) {
buf[v] = 0.;
for (c = 0; c < s->channels; c++) {
buf[v] += SHORT_TO_FLOAT(data[ v * s->channels + c]);
}
buf[v] /= (smpl_t)s->channels;
}
// short read, fill with zeros
if (loadedPackets < s->block_size) {
for (v = loadedPackets; v < s->block_size; v++) {
buf[v] = 0.;
}
}
*read = (uint_t)loadedPackets;
return;
beach:
*read = 0;
return;
}
void aubio_source_apple_audio_do_multi(aubio_source_apple_audio_t *s, fmat_t * read_to, uint_t * read) {
UInt32 c, v, loadedPackets = s->block_size;
OSStatus err = ExtAudioFileRead(s->audioFile, &loadedPackets, &s->bufferList);
if (err) {
char_t errorstr[20];
AUBIO_ERROR("source_apple_audio: error while reading %s "
"with ExtAudioFileRead (%s)\n", s->path,
getPrintableOSStatusError(errorstr, err));
goto beach;
}
short *data = (short*)s->bufferList.mBuffers[0].mData;
smpl_t **buf = read_to->data;
for (v = 0; v < loadedPackets; v++) {
for (c = 0; c < read_to->height; c++) {
buf[c][v] = SHORT_TO_FLOAT(data[ v * s->channels + c]);
}
}
// if read_data has more channels than the file
if (read_to->height > s->channels) {
// copy last channel to all additional channels
for (v = 0; v < loadedPackets; v++) {
for (c = s->channels; c < read_to->height; c++) {
buf[c][v] = SHORT_TO_FLOAT(data[ v * s->channels + (s->channels - 1)]);
}
}
}
// short read, fill with zeros
if (loadedPackets < s->block_size) {
for (v = loadedPackets; v < s->block_size; v++) {
for (c = 0; c < read_to->height; c++) {
buf[c][v] = 0.;
}
}
}
*read = (uint_t)loadedPackets;
return;
beach:
*read = 0;
return;
}
uint_t aubio_source_apple_audio_close (aubio_source_apple_audio_t *s)
{
OSStatus err = noErr;
if (!s->audioFile) { return AUBIO_OK; }
err = ExtAudioFileDispose(s->audioFile);
s->audioFile = NULL;
if (err) {
char_t errorstr[20];
AUBIO_ERROR("source_apple_audio: error while closing %s "
"in ExtAudioFileDispose (%s)\n", s->path,
getPrintableOSStatusError(errorstr, err));
return err;
}
return AUBIO_OK;
}
void del_aubio_source_apple_audio(aubio_source_apple_audio_t * s){
aubio_source_apple_audio_close (s);
if (s->path) AUBIO_FREE(s->path);
freeAudioBufferList(&s->bufferList);
AUBIO_FREE(s);
return;
}
uint_t aubio_source_apple_audio_seek (aubio_source_apple_audio_t * s, uint_t pos) {
OSStatus err = noErr;
if ((sint_t)pos < 0) {
AUBIO_ERROR("source_apple_audio: error while seeking in %s "
"(can not seek at negative position %d)\n",
s->path, pos);
err = -1;
goto beach;
}
// check if we are not seeking out of the file
uint_t fileLengthFrames = aubio_source_apple_audio_get_duration(s);
// compute position in the source file, before resampling
smpl_t ratio = s->source_samplerate * 1. / s->samplerate;
SInt64 resampled_pos = (SInt64)ROUND( pos * ratio );
if (resampled_pos > fileLengthFrames) {
AUBIO_ERR("source_apple_audio: trying to seek in %s at pos %d, "
"but file has only %d frames\n",
s->path, pos, (uint_t)(fileLengthFrames / ratio));
err = -1;
goto beach;
}
// after a short read, the bufferList size needs to resetted to prepare for a full read
AudioBufferList *bufferList = &s->bufferList;
bufferList->mBuffers[0].mDataByteSize = s->block_size * s->channels * sizeof (short);
// do the actual seek
err = ExtAudioFileSeek(s->audioFile, resampled_pos);
if (err) {
char_t errorstr[20];
AUBIO_ERROR("source_apple_audio: error while seeking %s at %d "
"in ExtAudioFileSeek (%s)\n", s->path, pos,
getPrintableOSStatusError(errorstr, err));
}
#if 0
// check position after seek
{
SInt64 outFrameOffset = 0;
err = ExtAudioFileTell(s->audioFile, &outFrameOffset);
if (err) {
char_t errorstr[20];
AUBIO_ERROR("source_apple_audio: error while seeking %s at %d "
"in ExtAudioFileTell (%s)\n", s->path, pos,
getPrintableOSStatusError(errorstr, err));
}
AUBIO_DBG("source_apple_audio: asked seek at %d, tell got %d\n",
pos, (uint_t)(outFrameOffset / ratio + .5));
}
#endif
beach:
return err;
}
uint_t aubio_source_apple_audio_get_samplerate(const aubio_source_apple_audio_t * s) {
return s->samplerate;
}
uint_t aubio_source_apple_audio_get_channels(const aubio_source_apple_audio_t * s) {
return s->channels;
}
uint_t aubio_source_apple_audio_get_duration(const aubio_source_apple_audio_t * s) {
SInt64 fileLengthFrames = 0;
UInt32 propSize = sizeof(fileLengthFrames);
OSStatus err = ExtAudioFileGetProperty(s->audioFile,
kExtAudioFileProperty_FileLengthFrames, &propSize, &fileLengthFrames);
if (err) {
char_t errorstr[20];
AUBIO_ERROR("source_apple_audio: Failed getting %s duration, "
"error in ExtAudioFileGetProperty (%s)\n", s->path,
getPrintableOSStatusError(errorstr, err));
return err;
}
return (uint_t)fileLengthFrames;
}
#endif /* HAVE_SOURCE_APPLE_AUDIO */