Add v0.7 source

src/soundopenal.c

@@ -0,0 +1,143 @@
+#define USE_OPENAL
+#include <stdio.h>
+#include <string.h>
+#ifdef USE_OPENAL
+#include <AL/al.h>
+#include <AL/alut.h>
+#endif
+#include "ibm.h"
+
+FILE *allog;
+#ifdef USE_OPENAL
+ALuint buffers[4]; // front and back buffers
+ALuint source;     // audio source
+ALenum format;     // internal format
+#endif
+#define FREQ 48000
+#define BUFLEN SOUNDBUFLEN
+
+void closeal();
+
+void initalmain(int argc, char *argv[])
+{
+#ifdef USE_OPENAL
+        alutInit(0,0);
+//        printf("AlutInit\n");
+        atexit(closeal);
+//        printf("AlutInit\n");
+#endif
+}
+
+void closeal()
+{
+#ifdef USE_OPENAL
+        alutExit();
+#endif
+}
+
+void check()
+{
+#ifdef USE_OPENAL
+        ALenum error;
+        if ((error = alGetError()) != AL_NO_ERROR)
+        {
+//                printf("Error : %08X\n", error);
+//                exit(-1);
+        }
+#endif
+}
+
+void inital()
+{
+#ifdef USE_OPENAL
+        int c;
+        int16_t buf[BUFLEN*2];
+        format = AL_FORMAT_STEREO16;
+//        printf("1\n");
+        check();
+
+//        printf("2\n");
+        alGenBuffers(4, buffers);
+        check();
+        
+//        printf("3\n");
+        alGenSources(1, &source);
+        check();
+
+//        printf("4\n");
+        alSource3f(source, AL_POSITION,        0.0, 0.0, 0.0);
+        alSource3f(source, AL_VELOCITY,        0.0, 0.0, 0.0);
+        alSource3f(source, AL_DIRECTION,       0.0, 0.0, 0.0);
+        alSourcef (source, AL_ROLLOFF_FACTOR,  0.0          );
+        alSourcei (source, AL_SOURCE_RELATIVE, AL_TRUE      );
+        check();
+
+        memset(buf,0,BUFLEN*4);
+
+//        printf("5\n");
+        for (c=0;c<4;c++)
+            alBufferData(buffers[c], AL_FORMAT_STEREO16, buf, BUFLEN*2*2, FREQ);
+        alSourceQueueBuffers(source, 4, buffers);
+        check();
+//        printf("6 %08X\n",source);
+        alSourcePlay(source);
+        check();
+//        printf("InitAL!!! %08X\n",source);
+#endif
+}
+
+void givealbuffer(int16_t *buf)
+{
+#ifdef USE_OPENAL
+        int processed;
+        int state;
+        int c;
+        
+        //return;
+        
+//        printf("Start\n");
+        check();
+        
+//        printf("GiveALBuffer %08X\n",source);
+        
+        alGetSourcei(source, AL_SOURCE_STATE, &state);
+
+        check();
+        
+        if (state==0x1014)
+        {
+                alSourcePlay(source);
+//                printf("Resetting sound\n");
+        }
+//        printf("State - %i %08X\n",state,state);
+        alGetSourcei(source, AL_BUFFERS_PROCESSED, &processed);
+
+//        printf("P ");
+        check();
+//        printf("Processed - %i\n",processed);
+
+        if (processed>=1)
+        {
+                ALuint buffer;
+
+                alSourceUnqueueBuffers(source, 1, &buffer);
+//                printf("U ");
+                check();
+
+//                for (c=0;c<BUFLEN*2;c++) buf[c]^=0x8000;
+                alBufferData(buffer, AL_FORMAT_STEREO16, buf, BUFLEN*2*2, FREQ);
+//                printf("B ");
+               check();
+
+                alSourceQueueBuffers(source, 1, &buffer);
+//                printf("Q ");
+                check();
+                
+//                printf("\n");
+
+//                if (!allog) allog=fopen("al.pcm","wb");
+//                fwrite(buf,BUFLEN*2,1,allog);
+        }
+//        printf("\n");
+#endif
+}