From 75db61b756baeb95547bb80775e07796de204810 Mon Sep 17 00:00:00 2001 From: kub Date: Sun, 21 Jul 2024 16:33:07 +0200 Subject: [PATCH] platform ps2, handle audio similar to psp --- platform/ps2/emu.c | 109 ++++++++++++++++++++++++++++++++++----------- platform/psp/emu.c | 2 +- 2 files changed, 85 insertions(+), 26 deletions(-) diff --git a/platform/ps2/emu.c b/platform/ps2/emu.c index 32c3d6c4..09e13d25 100644 --- a/platform/ps2/emu.c +++ b/platform/ps2/emu.c @@ -87,9 +87,10 @@ static uint8_t vsync; /* 0 (Disabled), 1 (Enabled), 2 (Dynamic) */ #define SOUND_BLOCK_COUNT 7 #define SOUND_BUFFER_CHUNK (2*54000/50) // max.rate/min.frames in stereo +static short sndBuffer_emu[SOUND_BUFFER_CHUNK+4]; // 4 for sample rounding overhang static short __attribute__((aligned(4))) sndBuffer[SOUND_BUFFER_CHUNK*SOUND_BLOCK_COUNT]; static short __attribute__((aligned(4))) nulBuffer[SOUND_BUFFER_CHUNK]; -static short *snd_playptr, *sndBuffer_endptr; +static short *snd_playptr, *sndBuffer_ptr, *sndBuffer_endptr; static int samples_made, samples_done, samples_block; static int sound_thread_exit = 0, sound_stopped = 1; @@ -122,24 +123,78 @@ static void writeSound(int len) if (samples_made - samples_done < samples_block * (SOUND_BLOCK_COUNT-2) - 4) { samples_made += len / 2; - PicoIn.sndOut += len / 2; + sndBuffer_ptr += len / 2; + l = sndBuffer_ptr - sndBuffer; + + if (sndBuffer_ptr > sndBuffer_endptr) + sndBuffer_endptr = sndBuffer_ptr; + if (l > sizeof(sndBuffer)/2) + lprintf("snd ovrn %d %d\n", len, sndBuffer_ptr - sndBuffer); + if (l > samples_block * (SOUND_BLOCK_COUNT-2)) { + sndBuffer_endptr = sndBuffer_ptr; + sndBuffer_ptr = sndBuffer; + } } else lprintf("ovfl %d\n", samples_made - samples_done); - if (sndBuffer_endptr < PicoIn.sndOut) - sndBuffer_endptr = PicoIn.sndOut; - - l = PicoIn.sndOut - sndBuffer; - if (l > sizeof(sndBuffer)/2) - lprintf("ovrn %d %d\n", len, PicoIn.sndOut - sndBuffer); - if (l > samples_block * (SOUND_BLOCK_COUNT-2)) { - sndBuffer_endptr = PicoIn.sndOut; - PicoIn.sndOut = sndBuffer; - } // signal the snd thread SignalSema(sound_sem); } +static void writeSound_44100(int len) +{ + writeSound(len); + PicoIn.sndOut = sndBuffer_ptr; +} + +static void writeSound_22050_stereo(int len) +{ + short *p = sndBuffer_ptr; + int i; + + for (i = 0; i < len / 2; i+=2, p+=4) { + p[0] = p[2] = PicoIn.sndOut[i]; + p[1] = p[3] = PicoIn.sndOut[i+1]; + } + writeSound(2*len); +} + +static void writeSound_22050_mono(int len) +{ + short *p = sndBuffer_ptr; + int i; + + for (i = 0; i < len / 2; i++, p+=2) { + p[0] = p[1] = PicoIn.sndOut[i]; + } + writeSound(2*len); +} + +static void writeSound_11025_stereo(int len) +{ + short *p = sndBuffer_ptr; + int i; + + for (i = 0; i < len / 2; i+=2, p+=8) { + p[0] = p[2] = p[4] = p[6] = PicoIn.sndOut[i]; + p[1] = p[3] = p[5] = p[7] = PicoIn.sndOut[i+1]; + } + writeSound(4*len); +} + +static void writeSound_11025_mono(int len) +{ + short *p = sndBuffer_ptr; + int i; + + for (i = 0; i < len / 2; i++, p+=4) { + p[0] = p[1] = p[2] = p[3] = PicoIn.sndOut[i]; + } + writeSound(4*len); +} + +#define PS2_RATE 44100 // PicoIn.sndRate + static void resetSound() { struct audsrv_fmt_t format; @@ -147,7 +202,7 @@ static void resetSound() int ret; format.bits = 16; - format.freq = PicoIn.sndRate; + format.freq = PS2_RATE; format.channels = stereo ? 2 : 1; ret = audsrv_set_format(&format); if (ret < 0) { @@ -170,14 +225,10 @@ static int sound_thread(void *argp) // if there aren't enough samples, queue silence int queued = audsrv_queued()/2; while (queued < 2*samples_block) { - short *sndOut = PicoIn.sndOut, *sndEnd = sndBuffer_endptr; - // compute sample chunk size - int buflen = sndEnd - snd_playptr; - if (sndOut >= snd_playptr) - buflen = sndOut - snd_playptr; - if (buflen > samples_made - samples_done) - buflen = samples_made - samples_done; + int buflen = samples_made - samples_done; + if (buflen > sndBuffer_endptr - snd_playptr) + buflen = sndBuffer_endptr - snd_playptr; if (buflen > 3*samples_block - queued) buflen = 3*samples_block - queued; @@ -241,7 +292,7 @@ static void sound_init(void) thread.initial_priority = 40; thid = CreateThread(&thread); - samples_block = 22050/50; // needs to be initialized before thread start + samples_block = PS2_RATE/60; // needs to be initialized before thread start if (thid >= 0) { ret = StartThread(thid, NULL); if (ret < 0) lprintf("sound_init: StartThread returned %08x\n", ret); @@ -255,7 +306,7 @@ static void sound_init(void) void pemu_sound_start(void) { static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0; static int mp3_init_done; - int ret, stereo; + int ret, stereo, factor; samples_made = samples_done = 0; @@ -279,14 +330,22 @@ void pemu_sound_start(void) { PsndRerate(Pico.m.frame_count ? 1 : 0); } stereo = (PicoIn.opt&8)>>3; - samples_block = (PicoIn.sndRate / (Pico.m.pal ? 50 : 60)) * (stereo ? 2 : 1); + + factor = PS2_RATE / PicoIn.sndRate; + samples_block = (PS2_RATE / (Pico.m.pal ? 50 : 60)) * (stereo ? 2 : 1); lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n", PicoIn.sndRate, Pico.snd.len, stereo, Pico.m.pal, samples_block); resetSound(); - PicoIn.writeSound = writeSound; - snd_playptr = PicoIn.sndOut = sndBuffer_endptr = sndBuffer; + switch (factor) { + case 1: PicoIn.writeSound = stereo ? writeSound_44100 :writeSound_44100 ; break; + case 2: PicoIn.writeSound = stereo ? writeSound_22050_stereo:writeSound_22050_mono; break; + case 4: PicoIn.writeSound = stereo ? writeSound_11025_stereo:writeSound_11025_mono; break; + } + sndBuffer_endptr = sndBuffer; + snd_playptr = sndBuffer_ptr = sndBuffer; + PicoIn.sndOut = (factor == 1 ? sndBuffer_ptr : sndBuffer_emu); PsndRate_old = PicoIn.sndRate; PicoOpt_old = PicoIn.opt; diff --git a/platform/psp/emu.c b/platform/psp/emu.c index a3e22571..41deba8d 100644 --- a/platform/psp/emu.c +++ b/platform/psp/emu.c @@ -450,7 +450,7 @@ static void writeSound(int len) if (samples_made - samples_done < samples_block * (SOUND_BLOCK_COUNT-2) - 4) { sndBuffer_ptr += len / 2; if (sndBuffer_ptr - sndBuffer > sizeof(sndBuffer)/2) - lprintf("snd ovrn %d %d\n", len, PicoIn.sndOut - sndBuffer); + lprintf("snd ovrn %d %d\n", len, sndBuffer_ptr - sndBuffer); if (sndBuffer_ptr >= sndBuffer_endptr) { int wrap = sndBuffer_ptr - sndBuffer_endptr; if (wrap > 0) -- 2.39.5