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axmol/cocos/audio/openal/OpenALDecoder.cpp

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#include "audio/openal/OpenALDecoder.h"
#include <sys/mman.h>
#include <sys/stat.h>
#include <AL/alut.h>
#if CC_TARGET_PLATFORM == CC_PLATFORM_TIZEN
#include <FBase.h>
#include <FBaseCol.h>
#include <FMedia.h>
using namespace Tizen::Base;
using namespace Tizen::Base::Collection;
using namespace Tizen::Media;
#endif
#ifndef DISABLE_VORBIS
#include <vorbis/vorbisfile.h>
#endif
#ifdef ENABLE_MPG123
#include <mpg123.h>
#endif
namespace CocosDenshion {
static int checkALError(const char *funcName)
{
int err = alGetError();
if (err != AL_NO_ERROR)
{
switch (err)
{
case AL_INVALID_NAME:
fprintf(stderr, "AL_INVALID_NAME in %s\n", funcName);
break;
case AL_INVALID_ENUM:
fprintf(stderr, "AL_INVALID_ENUM in %s\n", funcName);
break;
case AL_INVALID_VALUE:
fprintf(stderr, "AL_INVALID_VALUE in %s\n", funcName);
break;
case AL_INVALID_OPERATION:
fprintf(stderr, "AL_INVALID_OPERATION in %s\n", funcName);
break;
case AL_OUT_OF_MEMORY:
fprintf(stderr, "AL_OUT_OF_MEMORY in %s\n", funcName);
break;
}
}
return err;
}
class AlutDecoder : public OpenALDecoder
{
bool decode(OpenALFile &file, ALuint &result)
{
if (!file.mapToMemory())
return false;
result = alutCreateBufferFromFileImage(file.mappedFile, file.fileSize);
if (AL_NONE == result)
return false;
return true;
}
bool acceptsFormat(Format format) const
{
return Wav == format || Raw == format;
}
};
class DataRaii
{
public:
char *data;
size_t size;
DataRaii() : data(0), size(0) {}
~DataRaii() { delete [] data; }
};
#ifdef ENABLE_MPG123
class Mpg123Decoder : public OpenALDecoder
{
private:
mpg123_handle *handle;
public:
class MpgOpenRaii
{
public:
mpg123_handle *handle;
MpgOpenRaii(mpg123_handle *handle) : handle(handle) {}
~MpgOpenRaii() { mpg123_close(handle); }
};
bool getInfo(ALenum &format, ALsizei &freq, ALsizei &size) const
{
int channels = 0;
int encoding = 0;
long rate = 0;
if (MPG123_OK != mpg123_getformat(handle, &rate, &channels, &encoding))
return false;
size = mpg123_length(handle);
if (size == MPG123_ERR)
return false;
freq = rate;
if (encoding == MPG123_ENC_UNSIGNED_8) {
if (channels == 1)
format = AL_FORMAT_MONO8;
else
format = AL_FORMAT_STEREO8;
} else {
if (channels == 1)
format = AL_FORMAT_MONO16;
else
format = AL_FORMAT_STEREO16;
}
return true;
}
bool decode(OpenALFile &file, ALuint &result)
{
if (MPG123_OK != mpg123_open_fd(handle, fileno(file.file)))
return false;
MpgOpenRaii raii(handle);
ALenum format = AL_NONE;
ALsizei freq = 0;
ALsizei size = 0;
if (!getInfo(format, freq, size))
return false;
DataRaii pcm;
pcm.size = size;
if (format == AL_FORMAT_MONO16 || format == AL_FORMAT_STEREO16)
pcm.size *= 2;
pcm.data = new char[pcm.size];
size_t done = 0;
if (MPG123_DONE != mpg123_read(handle, (unsigned char*)pcm.data, pcm.size, &done))
return false;
CCLOG("MP3 BUFFER SIZE: %ld, FORMAT %i.", (long)done, (int)format);
return initALBuffer(result, format, pcm.data, done, freq);
}
bool acceptsFormat(Format format) const
{
return Mp3 == format;
}
Mpg123Decoder()
: handle(mpg123_new(NULL, NULL))
{
if (MPG123_OK != mpg123_format(handle, 44100, MPG123_MONO | MPG123_STEREO,
MPG123_ENC_UNSIGNED_8 | MPG123_ENC_SIGNED_16))
CCLOG("ERROR (CocosDenshion): cannot set specified mpg123 format.");
}
~Mpg123Decoder()
{
mpg123_delete(handle);
}
};
#endif
#ifndef DISABLE_VORBIS
class VorbisDecoder : public OpenALDecoder
{
class OggRaii
{
public:
OggVorbis_File file;
~OggRaii() { ov_clear(&file); }
};
public:
bool decode(OpenALFile &file, ALuint &result)
{
OggRaii ogg;
int status = ov_test(file.file, &ogg.file, 0, 0);
if (status != 0) {
ov_clear(&ogg.file);
return false;
}
status = ov_test_open(&ogg.file);
if (status != 0) {
fprintf(stderr, "Could not open OGG file '%s'\n", file.debugName.c_str());
return false;
}
// As vorbis documentation says, we should not fclose() file
// after successful opening by vorbis functions.
file.file = NULL;
vorbis_info *info = ov_info(&ogg.file, -1);
ALenum format = (info->channels == 1) ? AL_FORMAT_MONO16 : AL_FORMAT_STEREO16;
DataRaii pcm;
pcm.size = ov_pcm_total(&ogg.file, -1) * info->channels * 2;
pcm.data = new char[pcm.size];
size_t size = 0;
int section = 0;
while (size < pcm.size) {
status = ov_read(&ogg.file, pcm.data + size, pcm.size - size, 0, 2, 1, &section);
if (status > 0) {
size += status;
} else if (status < 0) {
fprintf(stderr, "OGG file decoding stopped, file '%s'\n", file.debugName.c_str());
return false;
} else {
break;
}
}
if (size == 0) {
fprintf(stderr, "Unable to read OGG data from '%s'\n", file.debugName.c_str());
return false;
}
return initALBuffer(result, format, pcm.data, pcm.size, info->rate);
}
bool acceptsFormat(Format format) const
{
return Vorbis == format;
}
};
#endif
#if CC_TARGET_PLATFORM == CC_PLATFORM_TIZEN
class TizenDecoder : public OpenALDecoder
{
public:
static TizenDecoder *create(Format format)
{
TizenDecoder *decoder = new TizenDecoder(format);
if (decoder && !decoder->init()) {
delete decoder;
decoder = NULL;
}
return decoder;
}
bool decode(OpenALFile &file, ALuint &result)
{
if (!file.mapToMemory())
return false;
ByteBuffer inputBuffer;
inputBuffer.Construct(/*capacity*/ file.fileSize);
inputBuffer.SetArray((const byte*)file.mappedFile, 0, file.fileSize);
inputBuffer.Flip();
ByteBuffer pcm;
pcm.Construct(/*capacity*/ 2 * file.fileSize);
AudioSampleType sampleType = AUDIO_TYPE_NONE;
AudioChannelType channelType = AUDIO_CHANNEL_TYPE_NONE;
int sampleRate = 0;
if (E_SUCCESS != _decoder.Probe(inputBuffer, sampleType, channelType, sampleRate))
return false;
while (inputBuffer.GetRemaining()) {
auto ret = _decoder.Decode(inputBuffer, pcm);
if (ret == E_OUT_OF_MEMORY) {
pcm.ExpandCapacity(2 * pcm.GetCapacity());
} else if (IsFailed(ret)) {
AppLogTag("CocosDenshion(TizenDecoder)", "failed to decode file '%s', supported format is %s.", file.debugName.c_str(), getCodecName());
return false;
}
}
return initALBuffer(result, getALFormat(sampleType, channelType),
pcm.GetPointer(), pcm.GetPosition(), sampleRate);
}
bool acceptsFormat(Format format) const
{
return _format == format;
}
private:
TizenDecoder(Format format)
: _format(format)
{
}
bool init()
{
HashMap option;
option.Construct();
option.Add(*(new Integer(MEDIA_PROPERTY_AUDIO_CHANNEL_TYPE)), *(new Integer(AUDIO_CHANNEL_TYPE_NONE)));
option.Add(*(new Integer(MEDIA_PROPERTY_AUDIO_SAMPLE_RATE)), *(new Integer(44100)));
result r = _decoder.Construct(getCodecType());
if (IsFailed(r))
return false;
else
AppLogTag("CocosDenshion", "Tizen device supports audio format %s.", getCodecName());
return true;
}
ALenum getALFormat(AudioSampleType sampleType, AudioChannelType channelType)
{
if (sampleType == AUDIO_TYPE_PCM_U8) {
if (channelType == AUDIO_CHANNEL_TYPE_MONO)
return AL_FORMAT_MONO8;
return AL_FORMAT_STEREO8;
}
if (sampleType == AUDIO_TYPE_PCM_S16_LE) {
if (channelType == AUDIO_CHANNEL_TYPE_MONO)
return AL_FORMAT_MONO16;
return AL_FORMAT_STEREO16;
}
AppLogTag("CocosDenshion(TizenDecoder)", "unsuppored sampleType=%d.", sampleType, channelType);
return AL_NONE;
}
CodecType getCodecType() const
{
switch (_format) {
case Mp3:
return CODEC_MP3;
case Vorbis:
return CODEC_VORBIS;
case Flac:
return CODEC_FLAC;
case Midi:
return CODEC_MIDI;
case Aac:
return CODEC_AAC;
default:
break;
}
return CODEC_UNKNOWN;
}
const char *getCodecName() const
{
switch (_format) {
case Mp3:
return "mp3";
case Vorbis:
return "vorbis";
case Flac:
return "flac";
case Midi:
return "midi";
case Aac:
return "aac";
default:
break;
}
return "unknown";
}
Format _format;
AudioDecoder _decoder;
};
#endif
std::vector<OpenALDecoder *> OpenALDecoder::_decoders;
void OpenALDecoder::installDecoders()
{
#if CC_TARGET_PLATFORM == CC_PLATFORM_TIZEN
addDecoder(TizenDecoder::create(Mp3));
addDecoder(TizenDecoder::create(Vorbis));
addDecoder(TizenDecoder::create(Flac));
addDecoder(TizenDecoder::create(Midi));
addDecoder(TizenDecoder::create(Aac));
#else
#if !defined(DISABLE_VORBIS)
addDecoder(new VorbisDecoder());
#endif
#if defined(ENABLE_MPG123)
addDecoder(new Mpg123Decoder());
#endif
#endif
addDecoder(new AlutDecoder());
}
void OpenALDecoder::addDecoder(OpenALDecoder *decoder)
{
if (decoder)
_decoders.push_back(decoder);
}
bool OpenALDecoder::initALBuffer(ALuint &result, ALenum format,
const ALvoid *data, ALsizei size, ALsizei freq)
{
// Load audio data into a buffer.
alGenBuffers(1, &result);
if (checkALError("initALBuffer:alGenBuffers") != AL_NO_ERROR)
{
fprintf(stderr, "Couldn't generate OpenAL buffer\n");
return false;
}
alBufferData(result, format, data, size, freq);
checkALError("initALBuffer:alBufferData");
return true;
}
const std::vector<OpenALDecoder *> &OpenALDecoder::getDecoders()
{
return _decoders;
}
void OpenALFile::clear()
{
if (mappedFile) {
::munmap(mappedFile, fileSize);
mappedFile = 0;
fileSize = 0;
}
if (file) {
fclose(file);
file = 0;
}
}
bool OpenALFile::mapToMemory()
{
if (!file)
return false;
if (mappedFile != NULL)
return true;
const int fd = fileno(file);
struct stat fileStats;
if (0 != fstat(fd, &fileStats))
return false;
fileSize = fileStats.st_size;
mappedFile = ::mmap(NULL, fileSize, PROT_READ, MAP_PRIVATE, fd, 0);
if (mappedFile != MAP_FAILED)
return true;
mappedFile = NULL;
return false;
}
} // namespace CocosDenshion
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