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make OSS detect blocking, adjust audio API

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@898 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2010-09-18 16:40:13 +00:00
parent d40231e29a
commit a4edca53b4
11 changed files with 92 additions and 99 deletions
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39
platform/pandora/plat.c
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@ -240,51 +240,22 @@ static void make_bg(int no_scale)
void pemu_forced_frame(int no_scale, int do_emu)
{
int po_old = PicoOpt;
memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
PicoOpt |= POPT_ACC_SPRITES;
if (!no_scale)
PicoOpt |= POPT_EN_SOFTSCALE;
PicoDrawSetOutFormat(PDF_RGB555, 1);
Pico.m.dirtyPal = 1;
doing_bg_frame = 1;
if (do_emu)
PicoFrame();
else
PicoFrameDrawOnly();
emu_cmn_forced_frame(no_scale, do_emu);
doing_bg_frame = 0;
// making a copy because enabling the layer clears it's mem
memcpy32((void *)fb_copy, g_screen_ptr, sizeof(fb_copy) / 4);
make_bg(no_scale);
PicoOpt = po_old;
}
static void updateSound(int len)
static void oss_write_nonblocking(int len)
{
unsigned int t;
len <<= 1;
if (PicoOpt & POPT_EN_STEREO)
len <<= 1;
// sndout_oss_can_write() not reliable..
// sndout_oss_can_write() is not reliable, only use with no_frmlimit
if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))
return;
/* avoid writing audio when lagging behind to prevent audio lag */
if (PicoSkipFrame == 2)
return;
t = plat_get_ticks_ms();
sndout_oss_write(PsndOut, len);
t = plat_get_ticks_ms() - t;
if (t > 1)
printf("audio lag %u\n", t);
sndout_oss_write_nb(PsndOut, len);
}
void pemu_sound_start(void)
@ -308,7 +279,7 @@ void pemu_sound_start(void)
PsndRate, PsndLen, is_stereo, Pico.m.pal);
sndout_oss_start(PsndRate, is_stereo, 2);
//sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
PicoWriteSound = updateSound;
PicoWriteSound = oss_write_nonblocking;
plat_update_volume(0, 0);
memset(sndBuffer, 0, sizeof(sndBuffer));
PsndOut = sndBuffer;