long duh_render(
DUH_SIGRENDERER *sigrenderer,
int bits, int unsign,
float volume, float delta,
long size, void *sptr
)
{
long n;
sample_t **sampptr;
int n_channels;
ASSERT(bits == 8 || bits == 16);
ASSERT(sptr);
if (!sigrenderer)
return 0;
n_channels = duh_sigrenderer_get_n_channels(sigrenderer);
ASSERT(n_channels > 0);
/* This restriction will be removed when need be. At the moment, tightly
* optimised loops exist for exactly one or two channels.
*/
ASSERT(n_channels <= 2);
sampptr = allocate_sample_buffer(n_channels, size);
if (!sampptr)
return 0;
dumb_silence(sampptr[0], n_channels * size);
size = duh_sigrenderer_generate_samples(sigrenderer, volume, delta, size, sampptr);
if (bits == 16) {
int signconv = unsign ? 0x8000 : 0x0000;
for (n = 0; n < size * n_channels; n++) {
CONVERT16(sampptr[0][n], n, signconv);
}
} else {
char signconv = unsign ? 0x80 : 0x00;
for (n = 0; n < size * n_channels; n++) {
CONVERT8(sampptr[0][n], n, signconv);
}
}
destroy_sample_buffer(sampptr);
return size;
}
JNIEXPORT void JNICALL Java_jpcsp_memory_NativeMemoryUtils_write16(JNIEnv * env, jclass self, jlong memory, jint address, jint value) {
CONVERT16(value);
unsigned short *p16 = (void *) memory + (address & ~1);
*p16 = (unsigned short) value;
}
JNIEXPORT jint JNICALL Java_jpcsp_memory_NativeMemoryUtils_read16(JNIEnv * env, jclass self, jlong memory, jint address) {
unsigned short *p16 = (void *) memory + (address & ~1);
unsigned short value = *p16;
CONVERT16(value);
return value;
}
