cpp/openttd-patchpack/source Files · sound/win32_s.c

Files @ r4574:26f71b3f860b

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Location: cpp/openttd-patchpack/source/sound/win32_s.c

r4574:26f71b3f860b 2.0 KiB text/x-c Show Annotation Show as Raw Download as Raw

bjarni

(svn r6424) -Codechange: [autoreplace] removed a loop though all vehicles from each time the window is redrawn
To do this, the player struct contains an array, that contains the count of each engine type that the player owns
Those arrays are updated each time a vehicle is build or deleted and is calculated on load (it's not saved)
It's possible to access the arrays outside of the autoreplace GUI, so feel free to read from them in other patches as well

/* $Id$ */

#include "../stdafx.h"
#include "../openttd.h"
#include "../driver.h"
#include "../functions.h"
#include "../mixer.h"
#include "win32_s.h"
#include <windows.h>
#include <mmsystem.h>

static HWAVEOUT _waveout;
static WAVEHDR _wave_hdr[2];
static int _bufsize;

static void PrepareHeader(WAVEHDR *hdr)
{
	hdr->dwBufferLength = _bufsize * 4;
	hdr->dwFlags = 0;
	hdr->lpData = malloc(_bufsize * 4);
	if (hdr->lpData == NULL ||
			waveOutPrepareHeader(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
		error("waveOutPrepareHeader failed");
}

static void FillHeaders(void)
{
	WAVEHDR *hdr;

	for (hdr = _wave_hdr; hdr != endof(_wave_hdr); hdr++) {
		if (!(hdr->dwFlags & WHDR_INQUEUE)) {
			MxMixSamples(hdr->lpData, hdr->dwBufferLength / 4);
			if (waveOutWrite(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
				error("waveOutWrite failed");
		}
	}
}

static void CALLBACK waveOutProc(HWAVEOUT hwo, UINT uMsg, DWORD_PTR dwInstance,
	DWORD dwParam1, DWORD dwParam2)
{
	switch (uMsg) {
		case WOM_DONE:
			if (_waveout) FillHeaders();
			break;

		default:
			break;
	}
}

static const char *Win32SoundStart(const char* const* parm)
{
	WAVEFORMATEX wfex;
	int hz;

	_bufsize = GetDriverParamInt(parm, "bufsize", 1024);
	hz = GetDriverParamInt(parm, "hz", 11025);
	wfex.wFormatTag = WAVE_FORMAT_PCM;
	wfex.nChannels = 2;
	wfex.nSamplesPerSec = hz;
	wfex.nAvgBytesPerSec = hz * 2 * 2;
	wfex.nBlockAlign = 4;
	wfex.wBitsPerSample = 16;
	if (waveOutOpen(&_waveout, WAVE_MAPPER, &wfex, (DWORD_PTR)&waveOutProc, 0, CALLBACK_FUNCTION) != MMSYSERR_NOERROR)
		return "waveOutOpen failed";
	PrepareHeader(&_wave_hdr[0]);
	PrepareHeader(&_wave_hdr[1]);
	FillHeaders();
	return NULL;
}

static void Win32SoundStop(void)
{
	HWAVEOUT waveout = _waveout;

	_waveout = NULL;
	waveOutReset(waveout);
	waveOutUnprepareHeader(waveout, &_wave_hdr[0], sizeof(WAVEHDR));
	waveOutUnprepareHeader(waveout, &_wave_hdr[1], sizeof(WAVEHDR));
	waveOutClose(waveout);
}

const HalSoundDriver _win32_sound_driver = {
	Win32SoundStart,
	Win32SoundStop,
};