From: notaz <notasas@gmail.com>
Date: Sat, 8 Aug 2009 13:18:41 +0000 (+0000)
Subject: allow slightly deviated sound rates (for Wiz)
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f9dd0a6360f6486c196d9a463dc537c7081338be;p=libpicofe.git

allow slightly deviated sound rates (for Wiz)

git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@740 be3aeb3a-fb24-0410-a615-afba39da0efa
---

diff --git a/common/mp3_helix.c b/common/mp3_helix.c
index 5f58aa5..4a4931f 100644
--- a/common/mp3_helix.c
+++ b/common/mp3_helix.c
@@ -196,8 +196,14 @@ void mp3_update(int *buffer, int length, int stereo)
 		return; /* no file / EOF */
 
 	length_mp3 = length;
-	if (PsndRate == 22050) { mix_samples = mix_16h_to_32_s1; length_mp3 <<= 1; shr = 1; }
-	else if (PsndRate == 11025) { mix_samples = mix_16h_to_32_s2; length_mp3 <<= 2; shr = 2; }
+	if (PsndRate <= 11025 + 100) {
+		mix_samples = mix_16h_to_32_s2;
+		length_mp3 <<= 2; shr = 2;
+	}
+	else if (PsndRate <= 22050 + 100) {
+		mix_samples = mix_16h_to_32_s1;
+		length_mp3 <<= 1; shr = 1;
+	}
 
 	if (1152 - mp3_buffer_offs >= length_mp3) {
 		mix_samples(buffer, cdda_out_buffer + mp3_buffer_offs*2, length<<1);
diff --git a/gp2x/emu.c b/gp2x/emu.c
index 3245075..c608f32 100644
--- a/gp2x/emu.c
+++ b/gp2x/emu.c
@@ -33,7 +33,7 @@
 
 extern int crashed_940;
 
-static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
+static short __attribute__((aligned(4))) sndBuffer[2*(44100+100)/50];
 static unsigned char PicoDraw2FB_[(8+320) * (8+240+8)];
 unsigned char *PicoDraw2FB = PicoDraw2FB_;
 static int osd_fps_x;
@@ -205,7 +205,7 @@ static void draw_pico_ptr(void)
 	if (!(Pico.video.reg[12]&1) && !(PicoOpt & POPT_DIS_32C_BORDER))
 		x += 32;
 
-	if (EOPT_WIZ_TEAR_FIX) {
+	if (currentConfig.EmuOpt & EOPT_WIZ_TEAR_FIX) {
 		pitch = 240;
 		p += (319 - x) * pitch + y;
 	} else
@@ -614,9 +614,19 @@ void pemu_sound_start(void)
 		int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;
 		int target_fps = Pico.m.pal ? 50 : 60;
 		int frame_samples, snd_excess_add;
+		int snd_rate_oss = PsndRate;
 		gp2x_soc_t soc;
 
 		soc = soc_detect();
+		if (soc == SOCID_POLLUX) {
+			/* POLLUX pain: DPLL1 / mclk_div / bitclk_div / 4 */
+			switch (PsndRate) {
+			case 44100: PsndRate = 44171; break; // 44170.673077
+			case 22050: PsndRate = 22086; break; // 22085.336538
+			case 11025: PsndRate = 11043; break; // 11042.668269
+			default: break;
+			}
+		}
 
 		#define SOUND_RERATE_FLAGS (POPT_EN_FM|POPT_EN_PSG|POPT_EN_STEREO|POPT_EXT_FM|POPT_EN_MCD_CDDA)
 		if (PsndRate != PsndRate_old || Pico.m.pal != pal_old || ((PicoOpt & POPT_EXT_FM) && crashed_940) ||
@@ -642,7 +652,7 @@ void pemu_sound_start(void)
 		printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
 			PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);
 		sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
-		sndout_oss_start(PsndRate, frame_samples, is_stereo);
+		sndout_oss_start(snd_rate_oss, frame_samples, is_stereo);
 
 		/* Wiz's sound hardware needs more prebuffer */
 		if (soc == SOCID_POLLUX)
@@ -652,6 +662,13 @@ void pemu_sound_start(void)
 
 void pemu_sound_stop(void)
 {
+	/* get back from Wiz pain */
+	switch (PsndRate) {
+		case 44171: PsndRate = 44100; break;
+		case 22086: PsndRate = 22050; break;
+		case 11043: PsndRate = 11025; break;
+		default: break;
+	}
 }
 
 void pemu_sound_wait(void)
@@ -807,6 +824,8 @@ void pemu_loop_end(void)
 	int po_old = PicoOpt;
 	int eo_old = currentConfig.EmuOpt;
 
+	pemu_sound_stop();
+
 	/* do one more frame for menu bg */
 	PicoOpt &= ~POPT_ALT_RENDERER;
 	PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;