From b93428400f3c3c38f44450d58a6f10f07bac3355 Mon Sep 17 00:00:00 2001 From: notaz Date: Thu, 1 Nov 2007 09:39:56 +0000 Subject: [PATCH] psp snd output improved git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@288 be3aeb3a-fb24-0410-a615-afba39da0efa --- psp/emu.c | 28 +++++++++++++++++----------- 1 file changed, 17 insertions(+), 11 deletions(-) diff --git a/psp/emu.c b/psp/emu.c index 3a3ef4b..0e64f2a 100644 --- a/psp/emu.c +++ b/psp/emu.c @@ -469,8 +469,8 @@ static void vidResetMode(void) /* sound stuff */ -#define SOUND_BLOCK_SIZE_NTSC (2940*2) // 1024 // 1152 -#define SOUND_BLOCK_SIZE_PAL (3528*2) +#define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152 +#define SOUND_BLOCK_SIZE_PAL (1764*2) #define SOUND_BLOCK_COUNT 4 static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2]; @@ -490,9 +490,10 @@ static int sound_thread(SceSize args, void *argp) while (!sound_thread_exit) { if (samples_made - samples_done < samples_block) { - // wait for data... - //lprintf("sthr: wait... (%i/%i)\n", samples_done, samples_made); - ret = sceKernelWaitSema(sound_sem, 1, 0); + // wait for data (use at least 2 blocks) + //lprintf("sthr: wait... (%i)\n", samples_made - samples_done); + while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit) + ret = sceKernelWaitSema(sound_sem, 1, 0); //lprintf("sthr: sceKernelWaitSema: %i\n", ret); continue; } @@ -507,6 +508,14 @@ static int sound_thread(SceSize args, void *argp) snd_playptr = sndBuffer; if (ret) lprintf("sthr: outf: %i; pos %i/%i\n", ret, samples_done, samples_made); + + // shouln't happen, but just in case + if (samples_made - samples_done >= samples_block*3) { + //lprintf("block skip (%i)\n", samples_made - samples_done); + samples_done += samples_block; // skip + snd_playptr += samples_block; + } + } lprintf("sthr: exit\n"); @@ -546,8 +555,7 @@ static void sound_prepare(void) stereo=(PicoOpt&8)>>3; samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC; - if (PsndRate == 22050) samples_block /= 2; - else if (PsndRate == 11025) samples_block /= 4; + 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", @@ -606,7 +614,7 @@ static void writeSound(int len) // signal the snd thread samples_made += len; - if (samples_made - samples_done >= samples_block) { + if (samples_made - samples_done > samples_block*2) { // lprintf("signal, %i/%i\n", samples_done, samples_made); ret = sceKernelSignalSema(sound_sem, 1); // lprintf("signal ret %i\n", ret); @@ -938,12 +946,10 @@ void emu_Loop(void) int tval_diff; tval = sceKernelGetSystemTimeLow(); tval_diff = (int)(tval - tval_thissec) << 8; - if (tval_diff > lim_time) + if (tval_diff > lim_time && (frames_done/16 < frames_shown)) { // no time left for this frame - skip if (tval_diff - lim_time >= (300000<<8)) { - /* something caused a slowdown for us (disk access? cache flush?) - * try to recover by resetting timing... */ reset_timing = 1; continue; } -- 2.39.2