289 lines
8.1 KiB
C++
289 lines
8.1 KiB
C++
// ==============================================================
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// This file is part of Glest Shared Library (www.glest.org)
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//
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// Copyright (C) 2001-2008 Martiño Figueroa
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//
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// You can redistribute this code and/or modify it under
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// the terms of the GNU General Public License as published
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// by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version
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// ==============================================================
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#include "sound_file_loader.h"
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#include <vorbis/codec.h>
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#include <vorbis/vorbisfile.h>
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#include "sound.h"
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#include "util.h"
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#include "platform_util.h"
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#include "byte_order.h"
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#include "leak_dumper.h"
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using namespace Shared::Platform;
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using namespace std;
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using namespace Shared::Util;
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namespace Shared{ namespace Sound{
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// =====================================================
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// class WavSoundFileLoader
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// =====================================================
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void WavSoundFileLoader::open(const string &path, SoundInfo *soundInfo){
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char chunkId[]={'-', '-', '-', '-', '\0'};
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uint32 size32= 0;
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uint16 size16= 0;
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int count;
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fileName = path;
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f.open(path.c_str(), ios_base::in | ios_base::binary);
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if(!f.is_open()){
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throw megaglest_runtime_error("Error opening wav file: "+ string(path),true);
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}
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//RIFF chunk - Id
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f.read(chunkId, 4);
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static bool bigEndianSystem = Shared::PlatformByteOrder::isBigEndian();
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if(bigEndianSystem == true) {
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for(unsigned int i = 0; i < 4; ++i) {
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chunkId[i] = Shared::PlatformByteOrder::fromCommonEndian(chunkId[i]);
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}
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}
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if(strcmp(chunkId, "RIFF")!=0){
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throw megaglest_runtime_error("Not a valid wav file (first four bytes are not RIFF):" + path,true);
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}
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//RIFF chunk - Size
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f.read((char*) &size32, 4);
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if(bigEndianSystem == true) {
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size32 = Shared::PlatformByteOrder::fromCommonEndian(size32);
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}
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//RIFF chunk - Data (WAVE string)
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f.read(chunkId, 4);
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if(bigEndianSystem == true) {
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for(unsigned int i = 0; i < 4; ++i) {
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chunkId[i] = Shared::PlatformByteOrder::fromCommonEndian(chunkId[i]);
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}
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}
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if(strcmp(chunkId, "WAVE")!=0){
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throw megaglest_runtime_error("Not a valid wav file (wave data don't start by WAVE): " + path,true);
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}
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// === HEADER ===
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//first sub-chunk (header) - Id
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f.read(chunkId, 4);
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if(bigEndianSystem == true) {
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for(unsigned int i = 0; i < 4; ++i) {
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chunkId[i] = Shared::PlatformByteOrder::fromCommonEndian(chunkId[i]);
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}
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}
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if(strcmp(chunkId, "fmt ")!=0){
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throw megaglest_runtime_error("Not a valid wav file (first sub-chunk Id is not fmt): "+ path,true);
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}
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//first sub-chunk (header) - Size
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f.read((char*) &size32, 4);
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if(bigEndianSystem == true) {
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size32 = Shared::PlatformByteOrder::fromCommonEndian(size32);
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}
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//first sub-chunk (header) - Data (encoding type) - Ignore
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f.read((char*) &size16, 2);
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if(bigEndianSystem == true) {
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size16 = Shared::PlatformByteOrder::fromCommonEndian(size16);
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}
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//first sub-chunk (header) - Data (nChannels)
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f.read((char*) &size16, 2);
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if(bigEndianSystem == true) {
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size16 = Shared::PlatformByteOrder::fromCommonEndian(size16);
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}
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soundInfo->setChannels(size16);
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//first sub-chunk (header) - Data (nsamplesPerSecond)
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f.read((char*) &size32, 4);
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if(bigEndianSystem == true) {
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size32 = Shared::PlatformByteOrder::fromCommonEndian(size32);
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}
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soundInfo->setsamplesPerSecond(size32);
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//first sub-chunk (header) - Data (nAvgBytesPerSec) - Ignore
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f.read((char*) &size32, 4);
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if(bigEndianSystem == true) {
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size32 = Shared::PlatformByteOrder::fromCommonEndian(size32);
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}
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//first sub-chunk (header) - Data (blockAlign) - Ignore
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f.read((char*) &size16, 2);
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if(bigEndianSystem == true) {
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size16 = Shared::PlatformByteOrder::fromCommonEndian(size16);
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}
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//first sub-chunk (header) - Data (nsamplesPerSecond)
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f.read((char*) &size16, 2);
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if(bigEndianSystem == true) {
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size16 = Shared::PlatformByteOrder::fromCommonEndian(size16);
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}
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soundInfo->setBitsPerSample(size16);
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soundInfo->setBitRate(soundInfo->getSamplesPerSecond() * soundInfo->getChannels() * soundInfo->getBitsPerSample() / 8);
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if (soundInfo->getBitsPerSample() != 8 && soundInfo->getBitsPerSample()!=16){
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throw megaglest_runtime_error("Bits per sample must be 8 or 16: " + path,true);
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}
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bytesPerSecond= soundInfo->getBitsPerSample()*8*soundInfo->getSamplesPerSecond()*soundInfo->getChannels();
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count=0;
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do{
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count++;
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// === DATA ===
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//second sub-chunk (samples) - Id
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f.read(chunkId, 4);
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if(bigEndianSystem == true) {
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for(unsigned int i = 0; i < 4; ++i) {
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chunkId[i] = Shared::PlatformByteOrder::fromCommonEndian(chunkId[i]);
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}
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}
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if(strncmp(chunkId, "data", 4)!=0){
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continue;
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}
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//second sub-chunk (samples) - Size
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f.read((char*) &size32, 4);
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if(bigEndianSystem == true) {
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size32 = Shared::PlatformByteOrder::fromCommonEndian(size32);
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}
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dataSize= size32;
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soundInfo->setSize(dataSize);
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}
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while(strncmp(chunkId, "data", 4)!=0 && count<maxDataRetryCount);
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if(f.bad() || count==maxDataRetryCount){
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throw megaglest_runtime_error("Error reading samples: "+ path,true);
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}
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dataOffset= (uint32)f.tellg();
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}
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uint32 WavSoundFileLoader::read(int8 *samples, uint32 size){
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f.read(reinterpret_cast<char*> (samples), size);
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static bool bigEndianSystem = Shared::PlatformByteOrder::isBigEndian();
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if(bigEndianSystem == true) {
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Shared::PlatformByteOrder::toEndianTypeArray<int8>(samples,size);
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}
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return (uint32)f.gcount();
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}
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void WavSoundFileLoader::close(){
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f.close();
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}
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void WavSoundFileLoader::restart(){
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f.seekg(dataOffset, ios_base::beg);
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}
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// =======================================
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// Ogg Sound File Loader
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// =======================================
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OggSoundFileLoader::OggSoundFileLoader() {
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vf = NULL;
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f = NULL;
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}
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void OggSoundFileLoader::open(const string &path, SoundInfo *soundInfo){
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fileName = path;
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#ifdef WIN32
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f = _wfopen(utf8_decode(path).c_str(), L"rb");
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#else
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f= fopen(path.c_str(), "rb");
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#endif
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if(f==NULL){
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throw megaglest_runtime_error("Can't open ogg file: "+path,true);
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}
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vf= new OggVorbis_File();
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if(vf==NULL) {
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throw megaglest_runtime_error("Can't create ogg object for file: "+path,true);
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}
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ov_open(f, vf, NULL, 0);
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vorbis_info *vi= ov_info(vf, -1);
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if(vi==NULL) {
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throw megaglest_runtime_error("Can't read ogg header info for file: "+path,true);
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}
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uint32 samples = static_cast<uint32>(ov_pcm_total(vf, -1));
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if(SystemFlags::getSystemSettingType(SystemFlags::debugSound).enabled) SystemFlags::OutputDebug(SystemFlags::debugSound,"In [%s::%s Line: %d] path = [%s] vi->version = %d, vi->channels = %d, vi->rate = %ld, vi->bitrate_upper = %ld, vi->bitrate_nominal = %ld, vi->bitrate_lower = %ld, vi->bitrate_window = %ld, samples = " MG_SIZE_T_SPECIFIER "\n",__FILE__,__FUNCTION__,__LINE__,path.c_str(),vi->version,vi->channels,vi->rate,vi->bitrate_upper,vi->bitrate_nominal,vi->bitrate_lower,vi->bitrate_window,samples);
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soundInfo->setChannels(vi->channels);
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soundInfo->setsamplesPerSecond(vi->rate);
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soundInfo->setBitsPerSample(16);
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soundInfo->setSize(samples * 2 * vi->channels);
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soundInfo->setBitRate(vi->bitrate_nominal);
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}
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uint32 OggSoundFileLoader::read(int8 *samples, uint32 size){
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int section;
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int totalBytesRead= 0;
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while(size>0) {
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int bytesRead= ov_read(vf, reinterpret_cast<char*> (samples), size,
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0, 2, 1, §ion);
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if(bytesRead==0) {
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break;
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}
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size-= bytesRead;
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samples+= bytesRead;
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totalBytesRead+= bytesRead;
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}
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return totalBytesRead;
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}
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void OggSoundFileLoader::close() {
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if(vf != NULL) {
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ov_clear(vf);
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delete vf;
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vf= 0;
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}
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//fclose(f);
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}
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void OggSoundFileLoader::restart(){
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ov_raw_seek(vf, 0);
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}
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// =====================================================
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// class SoundFileLoaderFactory
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// =====================================================
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SoundFileLoaderFactory::SoundFileLoaderFactory(){
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registerClass<WavSoundFileLoader>("wav");
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registerClass<OggSoundFileLoader>("ogg");
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}
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SoundFileLoaderFactory *SoundFileLoaderFactory::getInstance(){
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static SoundFileLoaderFactory soundFileLoaderFactory;
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return &soundFileLoaderFactory;
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}
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}}//end namespace
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