//bpp == the resulting bits per pixel
//bpp == the source image bits per pixel
//req_bpp == use this instead of the source
bool load_info(
QuickVec<unsigned char> &out_buffer,
const char* _id,
int* w, int* h, int* bpp, int* bpp_source, int req_bpp = 4
) {
//get a io file pointer to the image
snow::io::iosrc* src = snow::io::iosrc_from_file(_id, "rb");
if(!src) {
snow::log(1, "/ snow / cannot open image file from %s", _id);
return false;
}
//always use callbacks because we use snow abstracted IO
stbi_io_callbacks stbi_snow_callbacks = {
snow_stbi_read,
snow_stbi_skip,
snow_stbi_eof
};
unsigned char *data = stbi_load_from_callbacks(&stbi_snow_callbacks, src, w, h, bpp_source, req_bpp);
//we are done with the src
snow::io::close(src);
snow::log(2, "/ snow / image / w:%d h:%d source bpp:%d bpp:%d\n", *w, *h, *bpp_source, req_bpp);
if(data != NULL) {
int _w = *w;
int _h = *h;
int _bpp = *bpp_source;
//if a requested bpp was given, override it
if(req_bpp != 0) {
_bpp = req_bpp;
}
//actual used bpp
*bpp = _bpp;
//work out the total length of the buffer
unsigned int length = _w * _h * _bpp;
//store it
out_buffer.Set(data, length);
//clean up used memory
stbi_image_free(data);
} else { //data != NULL
snow::log(1, "/ snow / image unable to be loaded by snow: %s reason: %s", _id, stbi_failure_reason());
return false;
}
return true;
} //load_info
//bpp == the resulting bits per pixel
//bpp == the source image bits per pixel
//req_bpp == use this instead of the source
bool info_from_bytes(
QuickVec<unsigned char> &out_buffer,
const unsigned char* bytes, int byteOffset, int byteLength,
const char* _id, int *w, int *h, int* bpp, int* bpp_source, int req_bpp = 4
) {
//get a io file pointer to the image
snow::io::iosrc* src = snow::io::iosrc_from_mem( (void*)(bytes + byteOffset), byteLength );
if(!src) {
snow::log(1, "/ snow / cannot open bytes from %s", _id);
return false;
}
//always use callbacks because we use snow abstracted IO
stbi_io_callbacks stbi_snow_callbacks = {
snow_stbi_read,
snow_stbi_skip,
snow_stbi_eof
};
unsigned char *data = stbi_load_from_callbacks(&stbi_snow_callbacks, src, w, h, bpp_source, req_bpp);
//we are done with the src
snow::io::close(src);
snow::log(2, "/ snow / image / w:%d h:%d source bpp:%d bpp:%d\n", *w, *h, *bpp_source, req_bpp);
if(data != NULL) {
int _w = *w;
int _h = *h;
int _bpp = *bpp_source;
//if a requested bpp was given, override it
if(req_bpp != 0) {
_bpp = req_bpp;
}
//actual used bpp
*bpp = _bpp;
//work out the total length of the output buffer
unsigned int length = _w * _h * _bpp;
//store it
out_buffer.Set(data, length);
//clean up used memory
stbi_image_free(data);
} //data != NULL
return true;
} //info_from_bytes
bool loadWavSampleFromFile(const char *inFileURL, QuickVec<unsigned char> &outBuffer, int *channels, int *bitsPerSample, int* outSampleRate)
{
//http://www.dunsanyinteractive.com/blogs/oliver/?p=72
//Local Declarations
FILE* f = NULL;
WAVE_Format wave_format;
RIFF_Header riff_header;
WAVE_Data wave_data;
unsigned char* data;
#ifdef ANDROID
FileInfo info = AndroidGetAssetFD(inFileURL);
f = fdopen(info.fd, "rb");
fseek(f, info.offset, 0);
#else
f = fopen(inFileURL, "rb");
#endif
if (!f)
{
LOG_SOUND("FAILED to read sound file, file pointer as null?\n");
return false;
}
// Read in the first chunk into the struct
fread(&riff_header, sizeof(RIFF_Header), 1, f);
//check for RIFF and WAVE tag in memeory
if ((riff_header.chunkID[0] != 'R' ||
riff_header.chunkID[1] != 'I' ||
riff_header.chunkID[2] != 'F' ||
riff_header.chunkID[3] != 'F') ||
(riff_header.format[0] != 'W' ||
riff_header.format[1] != 'A' ||
riff_header.format[2] != 'V' ||
riff_header.format[3] != 'E'))
{
LOG_SOUND("Invalid RIFF or WAVE Header!\n");
return false;
}
//Read in the 2nd chunk for the wave info
fread(&wave_format, sizeof(WAVE_Format), 1, f);
//check for fmt tag in memory
if (wave_format.subChunkID[0] != 'f' ||
wave_format.subChunkID[1] != 'm' ||
wave_format.subChunkID[2] != 't' ||
wave_format.subChunkID[3] != ' ')
{
LOG_SOUND("Invalid Wave Format!\n");
return false;
}
//check for extra parameters;
if (wave_format.subChunkSize > 16)
{
fseek(f, sizeof(short), SEEK_CUR);
}
//Read in the the last byte of data before the sound file
fread(&wave_data, sizeof(WAVE_Data), 1, f);
//check for data tag in memory
if (wave_data.subChunkID[0] != 'd' ||
wave_data.subChunkID[1] != 'a' ||
wave_data.subChunkID[2] != 't' ||
wave_data.subChunkID[3] != 'a')
{
LOG_SOUND("Invalid Wav Data Header!\n");
return false;
}
//Allocate memory for data
data = new unsigned char[wave_data.subChunkSize];
// Read in the sound data into the soundData variable
if (!fread(data, wave_data.subChunkSize, 1, f))
{
LOG_SOUND("error loading WAVE data into struct!\n");
return false;
}
//Store in the outbuffer
outBuffer.Set(data, wave_data.subChunkSize);
//Now we set the variables that we passed in with the
//data from the structs
*outSampleRate = (int)wave_format.sampleRate;
//The format is worked out by looking at the number of
//channels and the bits per sample.
*channels = wave_format.numChannels;
*bitsPerSample = wave_format.bitsPerSample;
//clean up and return true if successful
fclose(f);
delete[] data;
return true;
}
bool loadWavSampleFromBytes(const float *inData, int len, QuickVec<unsigned char> &outBuffer, int *channels, int *bitsPerSample, int* outSampleRate)
{
const char* start = (const char*)inData;
const char* end = start + len;
const char* ptr = start;
WAVE_Format wave_format;
RIFF_Header riff_header;
WAVE_Data wave_data;
unsigned char* data;
// Read in the first chunk into the struct
memcpy(&riff_header, ptr, sizeof(RIFF_Header));
ptr += sizeof(RIFF_Header);
//check for RIFF and WAVE tag in memeory
if ((riff_header.chunkID[0] != 'R' ||
riff_header.chunkID[1] != 'I' ||
riff_header.chunkID[2] != 'F' ||
riff_header.chunkID[3] != 'F') ||
(riff_header.format[0] != 'W' ||
riff_header.format[1] != 'A' ||
riff_header.format[2] != 'V' ||
riff_header.format[3] != 'E'))
{
LOG_SOUND("Invalid RIFF or WAVE Header!\n");
return false;
}
//Read in the 2nd chunk for the wave info
ptr = find_chunk(ptr, end, "fmt ");
if (!ptr) {
return false;
}
readStruct(wave_format, ptr);
//check for fmt tag in memory
if (wave_format.subChunkID[0] != 'f' ||
wave_format.subChunkID[1] != 'm' ||
wave_format.subChunkID[2] != 't' ||
wave_format.subChunkID[3] != ' ')
{
LOG_SOUND("Invalid Wave Format!\n");
return false;
}
ptr = find_chunk(ptr, end, "data");
if (!ptr) {
return false;
}
const char* base = readStruct(wave_data, ptr);
//check for data tag in memory
if (wave_data.subChunkID[0] != 'd' ||
wave_data.subChunkID[1] != 'a' ||
wave_data.subChunkID[2] != 't' ||
wave_data.subChunkID[3] != 'a')
{
LOG_SOUND("Invalid Wav Data Header!\n");
return false;
}
//Allocate memory for data
//data = new unsigned char[wave_data.subChunk2Size];
// Read in the sound data into the soundData variable
size_t size = wave_data.subChunkSize;
if (size > (end - base)) {
return false;
}
/*mlChannels = wave_format.numChannels;
if (mlChannels == 2)
{
if (wave_format.bitsPerSample == 8)
{
mFormat = AL_FORMAT_STEREO8;
mlSamples = size / 2;
}
else //if (wave_format.bitsPerSample == 16)
{
mlSamples = size / 4;
mFormat = AL_FORMAT_STEREO16;
}
} else //if (mlChannels == 1)
{
if (wave_format.bitsPerSample == 8)
{
mlSamples = size;
mFormat = AL_FORMAT_MONO8;
}
else //if (wave_format.bitsPerSample == 16)
{
mlSamples = size / 2;
mFormat = AL_FORMAT_MONO16;
}
}
mlFrequency = wave_format.sampleRate;
mfTotalTime = float(mlSamples) / float(mlFrequency);*/
//Store in the outbuffer
outBuffer.Set((unsigned char*)base, size);
//Now we set the variables that we passed in with the
//data from the structs
*outSampleRate = (int)wave_format.sampleRate;
//The format is worked out by looking at the number of
//channels and the bits per sample.
*channels = wave_format.numChannels;
*bitsPerSample = wave_format.bitsPerSample;
//clean up and return true if successful
//fclose(f);
//delete[] data;
return true;
}
