+
+void pemu_sound_start(void)
+{
+ static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
+ int ret, stereo;
+
+ samples_made = samples_done = 0;
+
+ if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
+ PsndRerate(Pico.m.frame_count ? 1 : 0);
+ }
+ stereo=(PicoOpt&8)>>3;
+
+ samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
+ if (PsndRate <= 22050) samples_block /= 2;
+ sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
+
+ lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
+ PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
+
+ // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
+ // sceAudio_5C37C0AE();
+ ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
+ if (ret < 0) {
+ lprintf("sceAudio_38553111() failed: %i\n", ret);
+ emu_status_msg("sound init failed (%i), snd disabled", ret);
+ currentConfig.EmuOpt &= ~EOPT_EN_SOUND;
+ } else {
+ PicoWriteSound = writeSound;
+ memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
+ snd_playptr = sndBuffer_endptr - samples_block;
+ samples_made = samples_block; // send 1 empty block first..
+ PsndOut = sndBuffer;
+ PsndRate_old = PsndRate;
+ PicoOpt_old = PicoOpt;
+ pal_old = Pico.m.pal;
+ }
+}
+
+void pemu_sound_stop(void)
+{
+ int i;
+ if (samples_done == 0)
+ {
+ // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
+ // we get a deadlock on next sceAudio_38553111 call
+ // so this is yet another workaround:
+ memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
+ samples_made = samples_block * 3;
+ sceKernelSignalSema(sound_sem, 1);
+ }
+ sceKernelDelayThread(100*1000);
+ samples_made = samples_done = 0;
+ for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
+ psp_msleep(100);
+ sceAudio_5C37C0AE();
+}
+
+/* wait until we can write more sound */
+void pemu_sound_wait(void)
+{
+ // TODO: test this
+ while (!sound_thread_exit && samples_made - samples_done > samples_block * 4)
+ psp_msleep(10);
+}
+
+static void sound_deinit(void)
+{
+ sound_thread_exit = 1;
+ sceKernelSignalSema(sound_sem, 1);
+ sceKernelDeleteSema(sound_sem);
+ sound_sem = -1;
+}
+
+static void writeSound(int len)
+{
+ int ret;
+
+ PsndOut += len / 2;
+ /*if (PsndOut > sndBuffer_endptr) {
+ memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
+ PsndOut = &sndBuffer[PsndOut - endptr];
+ lprintf("mov\n");
+ }
+ else*/
+ if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
+ if (PsndOut >= sndBuffer_endptr)
+ PsndOut = sndBuffer;
+
+ // signal the snd thread
+ samples_made += len / 2;
+ if (samples_made - samples_done > samples_block*2) {
+ // lprintf("signal, %i/%i\n", samples_done, samples_made);
+ ret = sceKernelSignalSema(sound_sem, 1);
+ //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
+ }
+}
+