bool ALAudio::load_sndfile(std::string const& filename, EASYRPG_SHARED_PTR<buffer> const& buf) {
SF_INFO info;
EASYRPG_SHARED_PTR<SNDFILE> file(sf_open(filename.c_str(), SFM_READ, &info), sf_close);
if(! file) { return false; }
// load data
std::vector<int16_t> data;
EASYRPG_ARRAY<int16_t, 4096> read_buf;
size_t read_size = 0;
while((read_size = sf_read_short(file.get(), read_buf.data(), read_buf.size())) != 0) {
data.insert(data.end(), read_buf.begin(), read_buf.begin() + read_size);
}
// channel check
ALsizei const channels =
(info.channels == 1)? AL_FORMAT_MONO16:
(info.channels == 2)? AL_FORMAT_STEREO16:
AL_INVALID_VALUE;
if(channels == AL_INVALID_VALUE) { return false; }
alBufferData(buf->get(), channels, &data.front(),
data.size() * sizeof(int16_t), info.samplerate);
return true;
}
void ALAudio::SE_Play(std::string const &file, int volume, int pitch) {
SET_CONTEXT(ctx_);
EASYRPG_SHARED_PTR<source> src = create_source(false);
alSourcef(src->get(), AL_PITCH, pitch * 0.01f);
src->set_volume(volume * 0.01f);
src->set_buffer_loader(getSound(*src, file));
se_src_.push_back(src);
}
bool Bitmap::WritePNG(std::ostream& os) const {
size_t const width = GetWidth(), height = GetHeight();
size_t const stride = width * 4;
std::vector<uint32_t> data(width * height);
EASYRPG_SHARED_PTR<pixman_image_t> dst
(pixman_image_create_bits(PIXMAN_a8r8g8b8, width, height, &data.front(), stride),
pixman_image_unref);
pixman_image_composite32(PIXMAN_OP_SRC, bitmap, NULL, dst.get(),
0, 0, 0, 0, 0, 0, width, height);
return ImagePNG::WritePNG(os, width, height, &data.front());
}
void ALAudio::source::play_buffer(EASYRPG_SHARED_PTR<buffer> const& buf) {
SET_CONTEXT(ctx_);
buf_ = buf;
ALenum state = AL_INVALID_VALUE;
alGetSourcei(src_, AL_SOURCE_STATE, &state);
if(state != AL_STOPPED) {
alSourceStop(src_);
}
if(buf_) {
alSourcei(src_, AL_BUFFER, buf->get());
alSourcei(src_, AL_SAMPLE_OFFSET, 0);
alSourcePlay(src_);
} else {
alSourcei(src_, AL_BUFFER, AL_NONE);
}
}
