bool SoundBuffer::LoadWAV(const std::string & filename, const SoundInfo & sound_device_info, std::ostream & error_output)
{
if (loaded)
Unload();
name = filename;
FILE *fp;
unsigned int size;
fp = fopen(filename.c_str(), "rb");
if (fp)
{
char id[5]; //four bytes to hold 'RIFF'
if (fread(id,sizeof(char),4,fp) != 4) return false; //read in first four bytes
id[4] = '\0';
if (!strcmp(id,"RIFF"))
{ //we had 'RIFF' let's continue
if (fread(&size,sizeof(unsigned int),1,fp) != 1) return false; //read in 32bit size value
size = ENDIAN_SWAP_32(size);
if (fread(id,sizeof(char),4,fp)!= 4) return false; //read in 4 byte string now
if (!strcmp(id,"WAVE"))
{ //this is probably a wave file since it contained "WAVE"
if (fread(id,sizeof(char),4,fp)!= 4) return false; //read in 4 bytes "fmt ";
if (!strcmp(id,"fmt "))
{
unsigned int format_length, sample_rate, avg_bytes_sec;
short format_tag, channels, block_align, bits_per_sample;
if (fread(&format_length, sizeof(unsigned int),1,fp) != 1) return false;
format_length = ENDIAN_SWAP_32(format_length);
if (fread(&format_tag, sizeof(short), 1, fp) != 1) return false;
format_tag = ENDIAN_SWAP_16(format_tag);
if (fread(&channels, sizeof(short),1,fp) != 1) return false;
channels = ENDIAN_SWAP_16(channels);
if (fread(&sample_rate, sizeof(unsigned int), 1, fp) != 1) return false;
sample_rate = ENDIAN_SWAP_32(sample_rate);
if (fread(&avg_bytes_sec, sizeof(unsigned int), 1, fp) != 1) return false;
avg_bytes_sec = ENDIAN_SWAP_32(avg_bytes_sec);
if (fread(&block_align, sizeof(short), 1, fp) != 1) return false;
block_align = ENDIAN_SWAP_16(block_align);
if (fread(&bits_per_sample, sizeof(short), 1, fp) != 1) return false;
bits_per_sample = ENDIAN_SWAP_16(bits_per_sample);
//new wave seeking code
//find data chunk
bool found_data_chunk = false;
long filepos = format_length + 4 + 4 + 4 + 4 + 4;
int chunknum = 0;
while (!found_data_chunk && chunknum < 10)
{
fseek(fp, filepos, SEEK_SET); //seek to the next chunk
if (fread(id, sizeof(char), 4, fp) != 4) return false; //read in 'data'
if (fread(&size, sizeof(unsigned int), 1, fp) != 1) return false; //how many bytes of sound data we have
size = ENDIAN_SWAP_32(size);
if (!strcmp(id,"data"))
{
found_data_chunk = true;
}
else
{
filepos += size + 4 + 4;
}
chunknum++;
}
if (chunknum >= 10)
{
//cerr << __FILE__ << "," << __LINE__ << ": Sound file contains more than 10 chunks before the data chunk: " + filename << std::endl;
error_output << "Couldn't find wave data in first 10 chunks of " << filename << std::endl;
return false;
}
sound_buffer = new char[size];
if (fread(sound_buffer, sizeof(char), size, fp) != size) return false; //read in our whole sound data chunk
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
if (bits_per_sample == 16)
{
for (unsigned int i = 0; i < size/2; i++)
{
//cout << "preswap i: " << sound_buffer[i] << "preswap i+1: " << sound_buffer[i+1] << std::endl;
//short preswap = ((short *)sound_buffer)[i];
((short *)sound_buffer)[i] = ENDIAN_SWAP_16(((short *)sound_buffer)[i]);
//cout << "postswap i: " << sound_buffer[i] << "postswap i+1: " << sound_buffer[i+1] << std::endl;
//cout << (int) i << "/" << (int) size << std::endl;
//short postswap = ((short *)sound_buffer)[i];
//cout << preswap << "/" << postswap << std::endl;
}
}
//else if (bits_per_sample != 8)
else
{
error_output << "Sound file with " << bits_per_sample << " bits per sample not supported" << std::endl;
return false;
}
#endif
info = SoundInfo(size/(bits_per_sample/8), sample_rate, channels, bits_per_sample/8);
SoundInfo original_info(size/(bits_per_sample/8), sample_rate, channels, bits_per_sample/8);
loaded = true;
SoundInfo desired_info(original_info.samples, sound_device_info.frequency, original_info.channels, sound_device_info.bytespersample);
//ConvertTo(desired_info);
if (desired_info == original_info)
{
}
else
{
error_output << "SOUND FORMAT:" << std::endl;
original_info.DebugPrint(error_output);
error_output << "DESIRED FORMAT:" << std::endl;
desired_info.DebugPrint(error_output);
//throw EXCEPTION(__FILE__, __LINE__, "Sound file isn't in desired format: " + filename);
//cerr << __FILE__ << "," << __LINE__ << ": Sound file isn't in desired format: " + filename << std::endl;
error_output << "Sound file isn't in desired format: "+filename << std::endl;
return false;
}
}
else
{
//throw EXCEPTION(__FILE__, __LINE__, "Sound file doesn't have \"fmt \" header: " + filename);
//cerr << __FILE__ << "," << __LINE__ << ": Sound file doesn't have \"fmt \" header: " + filename << std::endl;
error_output << "Sound file doesn't have \"fmt\" header: "+filename << std::endl;
return false;
}
}
else
{
//throw EXCEPTION(__FILE__, __LINE__, "Sound file doesn't have WAVE header: " + filename);
//cerr << __FILE__ << "," << __LINE__ << ": Sound file doesn't have WAVE header: " + filename << std::endl;
error_output << "Sound file doesn't have WAVE header: "+filename << std::endl;
return false;
}
}
else
{
//throw EXCEPTION(__FILE__, __LINE__, "Sound file doesn't have RIFF header: " + filename);
//cerr << __FILE__ << "," << __LINE__ << ": Sound file doesn't have WAVE header: " + filename << std::endl;
error_output << "Sound file doesn't have RIFF header: "+filename << std::endl;
return false;
}
fclose(fp);
}
else
{
//throw EXCEPTION(__FILE__, __LINE__, "Can't open sound file: " + filename);
//cerr << __FILE__ << "," << __LINE__ << ": Can't open sound file: " + filename << std::endl;
error_output << "Can't open sound file: "+filename << std::endl;
return false;
}
//cout << size << std::endl;
return true;
}
bool SoundBuffer::LoadWAV(const std::string & filename, const SoundInfo & sound_device_info, std::ostream & error_output)
{
if (loaded)
Unload();
name = filename;
std::ifstream file(filename.c_str(), std::ifstream::binary);
if (!file)
{
error_output << "Failed to open sound file: " << filename << std::endl;
return false;
}
// read in first four bytes
char id[5] = {'\0'};
file.read(id, 4);
if (!file)
{
error_output << "Failed to read sound file RIFF header: " << filename << std::endl;
return false;
}
if (strcmp(id, "RIFF"))
{
error_output << "Sound file doesn't have RIFF header: " << filename << std::endl;
return false;
}
// read in 32bit size value
unsigned int size = 0;
file.read((char*)&size, sizeof(unsigned int));
size = ENDIAN_SWAP_32(size);
if (!file)
{
error_output << "Failed to read sound file size: " << filename << std::endl;
return false;
}
// read in 4 bytes "WAVE"
file.read(id, 4);
if (!file)
{
error_output << "Failed to read WAVE header: " << filename << std::endl;
return false;
}
if (strcmp(id, "WAVE"))
{
error_output << "Sound file doesn't have WAVE header: " << filename << std::endl;
return false;
}
// read in 4 bytes "fmt ";
file.read(id, 4);
if (!file)
{
error_output << "Failed to read \"fmt\" header: " << filename << std::endl;
return false;
}
if (strcmp(id, "fmt "))
{
error_output << "Sound file doesn't have \"fmt\" header: " << filename << std::endl;
return false;
}
// read sound format
unsigned int format_length, sample_rate, avg_bytes_sec;
short format_tag, channels, block_align, bits_per_sample;
file.read((char*)&format_length, sizeof(unsigned int));
file.read((char*)&format_tag, sizeof(short));
file.read((char*)&channels, sizeof(short));
file.read((char*)&sample_rate, sizeof(unsigned int));
file.read((char*)&avg_bytes_sec, sizeof(unsigned int));
file.read((char*)&block_align, sizeof(short));
file.read((char*)&bits_per_sample, sizeof(short));
if (!file)
{
error_output << "Failed to read sound format: " << filename << std::endl;
return false;
}
format_length = ENDIAN_SWAP_32(format_length);
format_tag = ENDIAN_SWAP_16(format_tag);
channels = ENDIAN_SWAP_16(channels);
sample_rate = ENDIAN_SWAP_32(sample_rate);
avg_bytes_sec = ENDIAN_SWAP_32(avg_bytes_sec);
block_align = ENDIAN_SWAP_16(block_align);
bits_per_sample = ENDIAN_SWAP_16(bits_per_sample);
// find data chunk
bool found_data_chunk = false;
long filepos = format_length + 4 + 4 + 4 + 4 + 4;
int chunknum = 0;
while (!found_data_chunk && chunknum < 10)
{
// seek to the next chunk
file.seekg(filepos);
// read in 'data'
file.read(id, 4);
if (!file) return false;
// how many bytes of sound data we have
file.read((char*)&size, sizeof(unsigned int));
if (!file) return false;
size = ENDIAN_SWAP_32(size);
if (!strcmp(id, "data"))
found_data_chunk = true;
else
filepos += size + 4 + 4;
chunknum++;
}
if (chunknum >= 10)
{
error_output << "Couldn't find wave data in first 10 chunks of " << filename << std::endl;
return false;
}
// read in our whole sound data chunk
sound_buffer = new char[size];
file.read(sound_buffer, size);
if (!file)
{
error_output << "Failed to read wave data " << filename << std::endl;
return false;
}
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
if (bits_per_sample == 16)
{
for (unsigned int i = 0; i < size / 2; i++)
{
((short *)sound_buffer)[i] = ENDIAN_SWAP_16(((short *)sound_buffer)[i]);
}
}
else
{
error_output << "Sound file with " << bits_per_sample << " bits per sample not supported" << std::endl;
return false;
}
#endif
info = SoundInfo(size/(bits_per_sample/8), sample_rate, channels, bits_per_sample/8);
loaded = true;
SoundInfo original_info(size/(bits_per_sample/8), sample_rate, channels, bits_per_sample/8);
SoundInfo desired_info(original_info.samples, sound_device_info.frequency, original_info.channels, sound_device_info.bytespersample);
if (!(desired_info == original_info))
{
error_output << "SOUND FORMAT:" << std::endl;
original_info.DebugPrint(error_output);
error_output << "DESIRED FORMAT:" << std::endl;
desired_info.DebugPrint(error_output);
error_output << "Sound file isn't in desired format: " << filename << std::endl;
return false;
}
return true;
}
