static void copy_sample_data(running_machine &machine, const INT16 *data, int bytes_to_copy)
{
void *buffer1, *buffer2 = (void *)NULL;
long length1, length2;
int cur_bytes;
// attempt to lock the stream buffer
if (lock_buffer(machine, stream_buffer_in, bytes_to_copy, &buffer1, &length1, &buffer2, &length2) < 0)
{
buffer_underflows++;
return;
}
// adjust the input pointer
stream_buffer_in += bytes_to_copy;
if (stream_buffer_in >= stream_buffer_size)
{
stream_buffer_in -= stream_buffer_size;
stream_loop = 1;
if (LOG_SOUND)
fprintf(sound_log, "stream_loop set to 1 (stream_buffer_in looped)\n");
}
// copy the first chunk
cur_bytes = (bytes_to_copy > length1) ? length1 : bytes_to_copy;
att_memcpy(buffer1, data, cur_bytes);
// adjust for the number of bytes
bytes_to_copy -= cur_bytes;
data = (INT16 *)((UINT8 *)data + cur_bytes);
// copy the second chunk
if (bytes_to_copy != 0)
{
cur_bytes = (bytes_to_copy > length2) ? length2 : bytes_to_copy;
att_memcpy(buffer2, data, cur_bytes);
}
// unlock
unlock_buffer();
}
void osd_update_audio_stream(running_machine *machine, INT16 *buffer, int samples_this_frame)
{
static unsigned char bufferatt[882*2*2*10];
if (machine->sample_rate != 0 )
{
if(attenuation!=0)
{
att_memcpy(bufferatt, buffer, samples_this_frame * sizeof(INT16) * 2);
myosd_sound_play(bufferatt,samples_this_frame * sizeof(INT16) * 2);
}
else
{
myosd_sound_play(buffer,samples_this_frame * sizeof(INT16) * 2);
}
}
}
