along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
-
#include <math.h>
#include <SDL.h>
#include "quakedef.h"
+
#include "snd_main.h"
static unsigned int sdlaudiotime = 0;
+static int audio_device = 0;
// Note: SDL calls SDL_LockAudio() right before this function, so no need to lock the audio data here
RequestedFrames = (unsigned int)len / factor;
- // Transfert up to a chunk of samples from snd_renderbuffer to stream
- MaxFrames = snd_renderbuffer->endframe - snd_renderbuffer->startframe;
- if (MaxFrames > RequestedFrames)
- FrameCount = RequestedFrames;
- else
- FrameCount = MaxFrames;
- StartOffset = snd_renderbuffer->startframe % snd_renderbuffer->maxframes;
- EndOffset = (snd_renderbuffer->startframe + FrameCount) % snd_renderbuffer->maxframes;
- if (StartOffset > EndOffset) // if the buffer wraps
+ if (SndSys_LockRenderBuffer())
{
- unsigned int PartialLength1, PartialLength2;
+ if (snd_usethreadedmixing)
+ {
+ S_MixToBuffer(stream, RequestedFrames);
+ if (snd_blocked)
+ memset(stream, snd_renderbuffer->format.width == 1 ? 0x80 : 0, len);
+ SndSys_UnlockRenderBuffer();
+ return;
+ }
- PartialLength1 = (snd_renderbuffer->maxframes - StartOffset) * factor;
- memcpy(stream, &snd_renderbuffer->ring[StartOffset * factor], PartialLength1);
+ // Transfert up to a chunk of samples from snd_renderbuffer to stream
+ MaxFrames = snd_renderbuffer->endframe - snd_renderbuffer->startframe;
+ if (MaxFrames > RequestedFrames)
+ FrameCount = RequestedFrames;
+ else
+ FrameCount = MaxFrames;
+ StartOffset = snd_renderbuffer->startframe % snd_renderbuffer->maxframes;
+ EndOffset = (snd_renderbuffer->startframe + FrameCount) % snd_renderbuffer->maxframes;
+ if (StartOffset > EndOffset) // if the buffer wraps
+ {
+ unsigned int PartialLength1, PartialLength2;
- PartialLength2 = FrameCount * factor - PartialLength1;
- memcpy(&stream[PartialLength1], &snd_renderbuffer->ring[0], PartialLength2);
- }
- else
- memcpy(stream, &snd_renderbuffer->ring[StartOffset * factor], FrameCount * factor);
+ PartialLength1 = (snd_renderbuffer->maxframes - StartOffset) * factor;
+ memcpy(stream, &snd_renderbuffer->ring[StartOffset * factor], PartialLength1);
- snd_renderbuffer->startframe += FrameCount;
+ PartialLength2 = FrameCount * factor - PartialLength1;
+ memcpy(&stream[PartialLength1], &snd_renderbuffer->ring[0], PartialLength2);
+ }
+ else
+ memcpy(stream, &snd_renderbuffer->ring[StartOffset * factor], FrameCount * factor);
+
+ snd_renderbuffer->startframe += FrameCount;
+
+ if (FrameCount < RequestedFrames && developer_insane.integer && vid_activewindow)
+ Con_DPrintf("SDL sound: %u sample frames missing\n", RequestedFrames - FrameCount);
- if (FrameCount < RequestedFrames && developer.integer >= 200)
- Con_DPrintf("SDL sound: %u sample frames missing\n", RequestedFrames - FrameCount);
+ sdlaudiotime += RequestedFrames;
- sdlaudiotime += RequestedFrames;
+ SndSys_UnlockRenderBuffer();
+ }
}
SDL_AudioSpec wantspec;
SDL_AudioSpec obtainspec;
- Con_Print ("SndSys_Init: using the SDL module\n");
+ snd_threaded = false;
+
+ Con_DPrint ("SndSys_Init: using the SDL module\n");
// Init the SDL Audio subsystem
if( SDL_InitSubSystem( SDL_INIT_AUDIO ) ) {
return false;
}
- buffersize = (unsigned int)ceil((double)requested->speed / 20.0);
+ buffersize = (unsigned int)ceil((double)requested->speed / 25.0); // 2048 bytes on 24kHz to 48kHz
// Init the SDL Audio subsystem
wantspec.callback = Buffer_Callback;
wantspec.channels = requested->channels;
wantspec.samples = CeilPowerOf2(buffersize); // needs to be a power of 2 on some platforms.
- Con_DPrintf("Wanted audio Specification:\n"
+ Con_Printf("Wanted audio Specification:\n"
"\tChannels : %i\n"
"\tFormat : 0x%X\n"
"\tFrequency : %i\n"
"\tSamples : %i\n",
wantspec.channels, wantspec.format, wantspec.freq, wantspec.samples);
- if( SDL_OpenAudio( &wantspec, &obtainspec ) )
+ if ((audio_device = SDL_OpenAudioDevice(NULL, 0, &wantspec, &obtainspec, 0)) == 0)
{
Con_Printf( "Failed to open the audio device! (%s)\n", SDL_GetError() );
return false;
}
- Con_DPrintf("Obtained audio specification:\n"
+ Con_Printf("Obtained audio specification:\n"
"\tChannels : %i\n"
"\tFormat : 0x%X\n"
"\tFrequency : %i\n"
wantspec.format != obtainspec.format ||
wantspec.channels != obtainspec.channels)
{
- SDL_CloseAudio();
+ SDL_CloseAudioDevice(audio_device);
// Pass the obtained format as a suggested format
if (suggested != NULL)
return false;
}
+ snd_threaded = true;
+
snd_renderbuffer = Snd_CreateRingBuffer(requested, 0, NULL);
if (snd_channellayout.integer == SND_CHANNELLAYOUT_AUTO)
- {
- int newlayout;
-
-#ifdef __linux__
- newlayout = SND_CHANNELLAYOUT_ALSA;
-#else
- newlayout = SND_CHANNELLAYOUT_STANDARD;
-#endif
- Cvar_SetValueQuick (&snd_channellayout, newlayout);
- }
+ Cvar_SetValueQuick (&snd_channellayout, SND_CHANNELLAYOUT_STANDARD);
sdlaudiotime = 0;
- SDL_PauseAudio( false );
+ SDL_PauseAudioDevice(audio_device, 0);
return true;
}
*/
void SndSys_Shutdown(void)
{
- SDL_CloseAudio();
-
+ if (audio_device > 0) {
+ SDL_CloseAudioDevice(audio_device);
+ audio_device = 0;
+ }
if (snd_renderbuffer != NULL)
{
Mem_Free(snd_renderbuffer->ring);
*/
qboolean SndSys_LockRenderBuffer (void)
{
- SDL_LockAudio();
+ SDL_LockAudioDevice(audio_device);
return true;
}
*/
void SndSys_UnlockRenderBuffer (void)
{
- SDL_UnlockAudio();
+ SDL_UnlockAudioDevice(audio_device);
+}
+
+/*
+====================
+SndSys_SendKeyEvents
+
+Send keyboard events originating from the sound system (e.g. MIDI)
+====================
+*/
+void SndSys_SendKeyEvents(void)
+{
+ // not supported
}
projects / xonotic / darkplaces.git / blobdiff