]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - snd_win.c
implemented Shadow Volume BSP based culling of lit surfaces, this is slightly better...
[xonotic/darkplaces.git] / snd_win.c
index 89b333d54b2c18b2e75baf6428e919eca4bea007..06aed2bbe03dcb4f358b4aa67d50853aa6302bb1 100644 (file)
--- a/snd_win.c
+++ b/snd_win.c
@@ -27,18 +27,70 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include <mmsystem.h>
 #include <dsound.h>
 
+// ==============================================================================
+
+#ifndef _WAVEFORMATEXTENSIBLE_
+#define _WAVEFORMATEXTENSIBLE_
+typedef struct
+{
+       WAVEFORMATEX Format;
+       union
+       {
+               WORD wValidBitsPerSample;       // bits of precision
+               WORD wSamplesPerBlock;          // valid if wBitsPerSample==0
+               WORD wReserved;                         // If neither applies, set to zero
+       } Samples;
+    DWORD dwChannelMask;                       // which channels are present in stream
+    GUID SubFormat;
+} WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
+#endif
+
+#if !defined(WAVE_FORMAT_EXTENSIBLE)
+#      define WAVE_FORMAT_EXTENSIBLE 0xFFFE
+#endif
+
+// Some speaker positions
+#ifndef SPEAKER_FRONT_LEFT
+#      define SPEAKER_FRONT_LEFT                               0x1
+#      define SPEAKER_FRONT_RIGHT                              0x2
+#      define SPEAKER_FRONT_CENTER                             0x4
+#      define SPEAKER_LOW_FREQUENCY                    0x8
+#      define SPEAKER_BACK_LEFT                                0x10
+#      define SPEAKER_BACK_RIGHT                               0x20
+#      define SPEAKER_FRONT_LEFT_OF_CENTER             0x40
+#      define SPEAKER_FRONT_RIGHT_OF_CENTER    0x80
+// ... we never use the other values
+#endif
+
+// KSDATAFORMAT_SUBTYPE_PCM = GUID "00000001-0000-0010-8000-00aa00389b71"
+static const GUID MY_KSDATAFORMAT_SUBTYPE_PCM =
+{
+       0x00000001,
+       0x0000,
+       0x0010,
+       {
+               0x80, 0x00,
+               0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71
+       }
+};
+
+
+// ==============================================================================
+
 extern HWND mainwindow;
 
 HRESULT (WINAPI *pDirectSoundCreate)(GUID FAR *lpGUID, LPDIRECTSOUND FAR *lplpDS, IUnknown FAR *pUnkOuter);
 
 // Wave output: 64KB in 64 buffers of 1KB
 // (64KB is > 1 sec at 16-bit 22050 Hz mono, and is 1/3 sec at 16-bit 44100 Hz stereo)
-#define        WAV_BUFFERS                             64
-#define        WAV_MASK                                (WAV_BUFFERS - 1)
-#define        WAV_BUFFER_SIZE                 1024
+#define        WAV_BUFFERS             64
+#define        WAV_MASK                (WAV_BUFFERS - 1)
+static unsigned int wav_buffer_size;
 
 // DirectSound output: 64KB in 1 buffer
-#define SECONDARY_BUFFER_SIZE  (64 * 1024)
+//#define SECONDARY_BUFFER_SIZE(fmt_ptr) ((fmt_ptr)->width * (fmt_ptr)->channels * (fmt_ptr)->speed / 2)
+// LordHavoc: changed this to be a multiple of 32768
+#define SECONDARY_BUFFER_SIZE(fmt_ptr) ((fmt_ptr)->channels * 32768)
 
 typedef enum sndinitstat_e {SIS_SUCCESS, SIS_FAILURE, SIS_NOTAVAIL} sndinitstat;
 
@@ -82,6 +134,65 @@ qboolean SNDDMA_InitWav (void);
 sndinitstat SNDDMA_InitDirect (void);
 
 
+/*
+==================
+SndSys_BuildWaveFormat
+==================
+*/
+static qboolean SndSys_BuildWaveFormat (const snd_format_t* requested, WAVEFORMATEXTENSIBLE* fmt_ptr)
+{
+       WAVEFORMATEX* pfmtex;
+
+       memset (fmt_ptr, 0, sizeof(*fmt_ptr));
+
+       pfmtex = &fmt_ptr->Format;
+       pfmtex->nChannels = requested->channels;
+    pfmtex->wBitsPerSample = requested->width * 8;
+    pfmtex->nSamplesPerSec = requested->speed;
+       pfmtex->nBlockAlign = pfmtex->nChannels * pfmtex->wBitsPerSample / 8;
+       pfmtex->nAvgBytesPerSec = pfmtex->nSamplesPerSec * pfmtex->nBlockAlign;
+
+       // LordHavoc: disabled this WAVE_FORMAT_EXTENSIBLE support because it does not seem to be working
+#if 0
+       if (requested->channels <= 2)
+       {
+#endif
+               pfmtex->wFormatTag = WAVE_FORMAT_PCM;
+               pfmtex->cbSize = 0;
+#if 0
+       }
+       else
+       {
+               pfmtex->wFormatTag = WAVE_FORMAT_EXTENSIBLE;
+               pfmtex->cbSize = sizeof(*fmt_ptr) - sizeof(fmt_ptr->Format);
+               fmt_ptr->Samples.wValidBitsPerSample = fmt_ptr->Format.wBitsPerSample;
+               fmt_ptr->SubFormat = MY_KSDATAFORMAT_SUBTYPE_PCM;
+
+               // Build the channel mask
+               fmt_ptr->dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
+               switch (requested->channels)
+               {
+                       case 8:
+                               fmt_ptr->dwChannelMask |= SPEAKER_FRONT_LEFT_OF_CENTER | SPEAKER_FRONT_RIGHT_OF_CENTER;
+                               // no break
+                       case 6:
+                               fmt_ptr->dwChannelMask |= SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY;
+                               // no break
+                       case 4:
+                               fmt_ptr->dwChannelMask |= SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
+                               break;
+
+                       default:
+                               Con_Printf("SndSys_BuildWaveFormat: invalid number of channels (%hu)\n", requested->channels);
+                               return false;
+               }
+       }
+#endif
+
+       return true;
+}
+
+
 /*
 ==================
 SndSys_InitDirectSound
@@ -89,24 +200,18 @@ SndSys_InitDirectSound
 DirectSound 5 support
 ==================
 */
-static sndinitstat SndSys_InitDirectSound (const snd_format_t* requested, snd_format_t* suggested)
+static sndinitstat SndSys_InitDirectSound (const snd_format_t* requested)
 {
-       DSBUFFERDESC    dsbuf;
-       DSBCAPS                 dsbcaps;
-       DWORD                   dwSize;
-       DSCAPS                  dscaps;
-       WAVEFORMATEX    format, pformat;
-       HRESULT                 hresult;
-       int                             reps;
-
-       memset (&format, 0, sizeof(format));
-       format.wFormatTag = WAVE_FORMAT_PCM;
-    format.nChannels = requested->channels;
-    format.wBitsPerSample = requested->width * 8;
-    format.nSamplesPerSec = requested->speed;
-    format.nBlockAlign = format.nChannels * format.wBitsPerSample / 8;
-    format.nAvgBytesPerSec = format.nSamplesPerSec * format.nBlockAlign;
-    format.cbSize = 0;
+       DSBUFFERDESC                    dsbuf;
+       DSBCAPS                                 dsbcaps;
+       DWORD                                   dwSize;
+       DSCAPS                                  dscaps;
+       WAVEFORMATEXTENSIBLE    format, pformat;
+       HRESULT                                 hresult;
+       int                                             reps;
+
+       if (! SndSys_BuildWaveFormat(requested, &format))
+               return SIS_FAILURE;
 
        if (!hInstDS)
        {
@@ -186,7 +291,7 @@ static sndinitstat SndSys_InitDirectSound (const snd_format_t* requested, snd_fo
                {
                        pformat = format;
 
-                       if (DS_OK != IDirectSoundBuffer_SetFormat (pDSPBuf, &pformat))
+                       if (DS_OK != IDirectSoundBuffer_SetFormat (pDSPBuf, (WAVEFORMATEX*)&pformat))
                        {
                                Con_Print("Set primary sound buffer format: no\n");
                        }
@@ -208,20 +313,20 @@ static sndinitstat SndSys_InitDirectSound (const snd_format_t* requested, snd_fo
                memset (&dsbuf, 0, sizeof(dsbuf));
                dsbuf.dwSize = sizeof(DSBUFFERDESC);
                dsbuf.dwFlags = DSBCAPS_CTRLFREQUENCY | DSBCAPS_LOCSOFTWARE;
-               dsbuf.dwBufferBytes = SECONDARY_BUFFER_SIZE;
-               dsbuf.lpwfxFormat = &format;
+               dsbuf.dwBufferBytes = SECONDARY_BUFFER_SIZE(requested);
+               dsbuf.lpwfxFormat = (WAVEFORMATEX*)&format;
 
                memset(&dsbcaps, 0, sizeof(dsbcaps));
                dsbcaps.dwSize = sizeof(dsbcaps);
 
                result = IDirectSound_CreateSoundBuffer(pDS, &dsbuf, &pDSBuf, NULL);
                if (result != DS_OK ||
-                       requested->channels != format.nChannels ||
-                       requested->width != format.wBitsPerSample / 8 ||
-                       requested->speed != format.nSamplesPerSec)
+                       requested->channels != format.Format.nChannels ||
+                       requested->width != format.Format.wBitsPerSample / 8 ||
+                       requested->speed != format.Format.nSamplesPerSec)
                {
                        Con_Printf("DS:CreateSoundBuffer Failed (%d): channels=%u, width=%u, speed=%u\n",
-                                          result, format.nChannels, format.wBitsPerSample / 8, format.nSamplesPerSec);
+                                          (int)result, (unsigned)format.Format.nChannels, (unsigned)format.Format.wBitsPerSample / 8, (unsigned)format.Format.nSamplesPerSec);
                        SndSys_Shutdown ();
                        return SIS_FAILURE;
                }
@@ -308,24 +413,17 @@ SndSys_InitMmsystem
 Crappy windows multimedia base
 ==================
 */
-static qboolean SndSys_InitMmsystem (const snd_format_t* requested, snd_format_t* suggested)
+static qboolean SndSys_InitMmsystem (const snd_format_t* requested)
 {
-       WAVEFORMATEX  format;
+       WAVEFORMATEXTENSIBLE format;
        int                             i;
        HRESULT                 hr;
 
-       memset (&format, 0, sizeof(format));
-       format.wFormatTag = WAVE_FORMAT_PCM;
-    format.nChannels = requested->channels;
-    format.wBitsPerSample = requested->width * 8;
-    format.nSamplesPerSec = requested->speed;
-    format.nBlockAlign = format.nChannels * format.wBitsPerSample / 8;
-    format.nAvgBytesPerSec = format.nSamplesPerSec * format.nBlockAlign;
-    format.cbSize = 0;
+       if (! SndSys_BuildWaveFormat(requested, &format))
+               return false;
 
        // Open a waveform device for output using window callback
-       while ((hr = waveOutOpen((LPHWAVEOUT)&hWaveOut, WAVE_MAPPER,
-                                       &format,
+       while ((hr = waveOutOpen((LPHWAVEOUT)&hWaveOut, WAVE_MAPPER, (WAVEFORMATEX*)&format,
                                        0, 0L, CALLBACK_NULL)) != MMSYSERR_NOERROR)
        {
                if (hr != MMSYSERR_ALLOCATED)
@@ -345,12 +443,14 @@ static qboolean SndSys_InitMmsystem (const snd_format_t* requested, snd_format_t
                }
        }
 
+       wav_buffer_size = (requested->speed / 2 / WAV_BUFFERS) * requested->channels * requested->width;
+
        /*
         * Allocate and lock memory for the waveform data. The memory
         * for waveform data must be globally allocated with
         * GMEM_MOVEABLE and GMEM_SHARE flags.
         */
-       gSndBufSize = WAV_BUFFERS*WAV_BUFFER_SIZE;
+       gSndBufSize = WAV_BUFFERS * wav_buffer_size;
        hData = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, gSndBufSize);
        if (!hData)
        {
@@ -372,8 +472,7 @@ static qboolean SndSys_InitMmsystem (const snd_format_t* requested, snd_format_t
         * also be globally allocated with GMEM_MOVEABLE and
         * GMEM_SHARE flags.
         */
-       hWaveHdr = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
-               (DWORD) sizeof(WAVEHDR) * WAV_BUFFERS);
+       hWaveHdr = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, (DWORD) sizeof(WAVEHDR) * WAV_BUFFERS);
 
        if (hWaveHdr == NULL)
        {
@@ -396,11 +495,10 @@ static qboolean SndSys_InitMmsystem (const snd_format_t* requested, snd_format_t
        // After allocation, set up and prepare headers
        for (i=0 ; i<WAV_BUFFERS ; i++)
        {
-               lpWaveHdr[i].dwBufferLength = WAV_BUFFER_SIZE;
-               lpWaveHdr[i].lpData = lpData + i*WAV_BUFFER_SIZE;
+               lpWaveHdr[i].dwBufferLength = wav_buffer_size;
+               lpWaveHdr[i].lpData = lpData + i * wav_buffer_size;
 
-               if (waveOutPrepareHeader(hWaveOut, lpWaveHdr+i, sizeof(WAVEHDR)) !=
-                               MMSYSERR_NOERROR)
+               if (waveOutPrepareHeader(hWaveOut, lpWaveHdr+i, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
                {
                        Con_Print("Sound: failed to prepare wave headers\n");
                        SndSys_Shutdown ();
@@ -447,7 +545,7 @@ qboolean SndSys_Init (const snd_format_t* requested, snd_format_t* suggested)
        // Init DirectSound
        if (!wavonly)
        {
-               stat = SndSys_InitDirectSound (requested, suggested);
+               stat = SndSys_InitDirectSound (requested);
 
                if (stat == SIS_SUCCESS)
                        Con_Print("DirectSound initialized\n");
@@ -461,7 +559,7 @@ qboolean SndSys_Init (const snd_format_t* requested, snd_format_t* suggested)
        // to have sound)
        if (!dsound_init && (stat != SIS_NOTAVAIL))
        {
-               if (SndSys_InitMmsystem (requested, suggested))
+               if (SndSys_InitMmsystem (requested))
                        Con_Print("Wave sound (MMSYSTEM) initialized\n");
                else
                        Con_Print("Wave sound failed to init\n");
@@ -561,12 +659,12 @@ void SndSys_Submit (void)
                return;
 
        paintpot += (snd_renderbuffer->endframe - prev_painted) * snd_renderbuffer->format.channels * snd_renderbuffer->format.width;
-       if (paintpot > WAV_BUFFERS * WAV_BUFFER_SIZE)
-               paintpot = WAV_BUFFERS * WAV_BUFFER_SIZE;
+       if (paintpot > WAV_BUFFERS * wav_buffer_size)
+               paintpot = WAV_BUFFERS * wav_buffer_size;
        prev_painted = snd_renderbuffer->endframe;
 
        // submit new sound blocks
-       while (paintpot > WAV_BUFFER_SIZE)
+       while (paintpot > wav_buffer_size)
        {
                h = lpWaveHdr + (snd_sent & WAV_MASK);
 
@@ -585,7 +683,7 @@ void SndSys_Submit (void)
                        return;
                }
 
-               paintpot -= WAV_BUFFER_SIZE;
+               paintpot -= wav_buffer_size;
        }
 
 }
@@ -600,17 +698,20 @@ Returns the number of sample frames consumed since the sound started
 */
 unsigned int SndSys_GetSoundTime (void)
 {
-       unsigned int s;
+       unsigned int factor;
+
+       factor = snd_renderbuffer->format.width * snd_renderbuffer->format.channels;
 
        if (dsound_init)
        {
                DWORD dwTime;
+               unsigned int diff;
 
                IDirectSoundBuffer_GetCurrentPosition(pDSBuf, &dwTime, NULL);
-               s = (dwTime - dwStartTime) & (gSndBufSize - 1);
+               diff = (unsigned int)(dwTime - dwStartTime) % (unsigned int)gSndBufSize;
                dwStartTime = dwTime;
 
-               dsound_time += s / (snd_renderbuffer->format.width * snd_renderbuffer->format.channels);
+               dsound_time += diff / factor;
                return dsound_time;
        }
 
@@ -631,9 +732,7 @@ unsigned int SndSys_GetSoundTime (void)
                        snd_completed++;        // this buffer has been played
                }
 
-               s = snd_completed * WAV_BUFFER_SIZE;
-
-               return s / (snd_renderbuffer->format.width * snd_renderbuffer->format.channels);
+               return (snd_completed * wav_buffer_size) / factor;
        }
 
        return 0;