mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-12-15 23:21:46 +00:00
152 lines
3.8 KiB
C++
152 lines
3.8 KiB
C++
#ifdef _WIN32
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#include <windows.h>
|
|
#define USE_WINDOWS_DWORD
|
|
#endif
|
|
|
|
#include "sndfile_decoder.h"
|
|
#include "templates.h"
|
|
#include "files.h"
|
|
#include "xs_Float.h"
|
|
#include "except.h"
|
|
|
|
#ifdef HAVE_SNDFILE
|
|
|
|
sf_count_t SndFileDecoder::file_get_filelen(void *user_data)
|
|
{
|
|
FileReader *reader = reinterpret_cast<SndFileDecoder*>(user_data)->Reader;
|
|
return reader->GetLength();
|
|
}
|
|
|
|
sf_count_t SndFileDecoder::file_seek(sf_count_t offset, int whence, void *user_data)
|
|
{
|
|
FileReader *reader = reinterpret_cast<SndFileDecoder*>(user_data)->Reader;
|
|
|
|
if(reader->Seek((long)offset, whence) != 0)
|
|
return -1;
|
|
return reader->Tell();
|
|
}
|
|
|
|
sf_count_t SndFileDecoder::file_read(void *ptr, sf_count_t count, void *user_data)
|
|
{
|
|
FileReader *reader = reinterpret_cast<SndFileDecoder*>(user_data)->Reader;
|
|
return reader->Read(ptr, (long)count);
|
|
}
|
|
|
|
sf_count_t SndFileDecoder::file_write(const void *ptr, sf_count_t count, void *user_data)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
sf_count_t SndFileDecoder::file_tell(void *user_data)
|
|
{
|
|
FileReader *reader = reinterpret_cast<SndFileDecoder*>(user_data)->Reader;
|
|
return reader->Tell();
|
|
}
|
|
|
|
|
|
SndFileDecoder::~SndFileDecoder()
|
|
{
|
|
if(SndFile)
|
|
sf_close(SndFile);
|
|
SndFile = 0;
|
|
}
|
|
|
|
bool SndFileDecoder::open(FileReader *reader)
|
|
{
|
|
__try
|
|
{
|
|
SF_VIRTUAL_IO sfio = { file_get_filelen, file_seek, file_read, file_write, file_tell };
|
|
|
|
Reader = reader;
|
|
SndFile = sf_open_virtual(&sfio, SFM_READ, &SndInfo, this);
|
|
if (SndFile)
|
|
{
|
|
if (SndInfo.channels == 1 || SndInfo.channels == 2)
|
|
return true;
|
|
|
|
sf_close(SndFile);
|
|
SndFile = 0;
|
|
}
|
|
}
|
|
__except (CheckException(GetExceptionCode()))
|
|
{
|
|
// this means that the delay loaded decoder DLL was not found.
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void SndFileDecoder::getInfo(int *samplerate, ChannelConfig *chans, SampleType *type)
|
|
{
|
|
*samplerate = SndInfo.samplerate;
|
|
|
|
if(SndInfo.channels == 2)
|
|
*chans = ChannelConfig_Stereo;
|
|
else
|
|
*chans = ChannelConfig_Mono;
|
|
|
|
*type = SampleType_Int16;
|
|
}
|
|
|
|
size_t SndFileDecoder::read(char *buffer, size_t bytes)
|
|
{
|
|
short *out = (short*)buffer;
|
|
size_t frames = bytes / SndInfo.channels / 2;
|
|
size_t total = 0;
|
|
|
|
// It seems libsndfile has a bug with converting float samples from Vorbis
|
|
// to the 16-bit shorts we use, which causes some PCM samples to overflow
|
|
// and wrap, creating static. So instead, read the samples as floats and
|
|
// convert to short ourselves.
|
|
// Use a loop to convert a handful of samples at a time, avoiding a heap
|
|
// allocation for temporary storage. 64 at a time works, though maybe it
|
|
// could be more.
|
|
while(total < frames)
|
|
{
|
|
size_t todo = MIN<size_t>(frames-total, 64/SndInfo.channels);
|
|
float tmp[64];
|
|
|
|
size_t got = (size_t)sf_readf_float(SndFile, tmp, todo);
|
|
if(got < todo) frames = total + got;
|
|
|
|
for(size_t i = 0;i < got*SndInfo.channels;i++)
|
|
*out++ = (short)xs_CRoundToInt(clamp(tmp[i] * 32767.f, -32768.f, 32767.f));
|
|
total += got;
|
|
}
|
|
return total * SndInfo.channels * 2;
|
|
}
|
|
|
|
TArray<char> SndFileDecoder::readAll()
|
|
{
|
|
if(SndInfo.frames <= 0)
|
|
return SoundDecoder::readAll();
|
|
|
|
int framesize = 2 * SndInfo.channels;
|
|
TArray<char> output;
|
|
|
|
output.Resize((unsigned)(SndInfo.frames * framesize));
|
|
size_t got = read(&output[0], output.Size());
|
|
output.Resize(got);
|
|
|
|
return output;
|
|
}
|
|
|
|
bool SndFileDecoder::seek(size_t ms_offset)
|
|
{
|
|
size_t smp_offset = (size_t)((double)ms_offset / 1000. * SndInfo.samplerate);
|
|
if(sf_seek(SndFile, smp_offset, SEEK_SET) < 0)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
size_t SndFileDecoder::getSampleOffset()
|
|
{
|
|
return (size_t)sf_seek(SndFile, 0, SEEK_CUR);
|
|
}
|
|
|
|
size_t SndFileDecoder::getSampleLength()
|
|
{
|
|
return (size_t)((SndInfo.frames > 0) ? SndInfo.frames : 0);
|
|
}
|
|
|
|
#endif
|