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audio fix (malc)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1137 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard
parent
9e89a4be8e
commit
15b6147000
65
hw/sb16.c
65
hw/sb16.c
@ -26,15 +26,16 @@
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#define LENOFA(a) ((int) (sizeof(a)/sizeof(a[0])))
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#define dolog(...) AUD_log ("sb16", __VA_ARGS__)
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/* #define DEBUG */
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/* #define DEBUG_SB16_MOST */
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#ifdef DEBUG
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#define ldebug(...) dolog (__VA_ARGS__)
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#else
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#define ldebug(...)
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#endif
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/* #define DEBUG */
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/* #define DEBUG_SB16_MOST */
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#define IO_READ_PROTO(name) \
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uint32_t name (void *opaque, uint32_t nport)
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#define IO_WRITE_PROTO(name) \
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@ -206,8 +207,18 @@ static void dma_cmd8 (SB16State *s, int mask, int dma_len)
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s->freq = (1000000 + (tmp / 2)) / tmp;
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}
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if (-1 != dma_len)
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s->block_size = dma_len + 1;
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if (dma_len != -1)
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s->block_size = dma_len << s->fmt_stereo;
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else {
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/* This is apparently the only way to make both Act1/PL
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and SecondReality/FC work
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Act1 sets block size via command 0x48 and it's an odd number
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SR does the same with even number
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Both use stereo, and Creatives own documentation states that
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0x48 sets block size in bytes less one.. go figure */
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s->block_size &= ~s->fmt_stereo;
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}
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s->freq >>= s->fmt_stereo;
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s->left_till_irq = s->block_size;
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@ -216,6 +227,9 @@ static void dma_cmd8 (SB16State *s, int mask, int dma_len)
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s->dma_auto = (mask & DMA8_AUTO) != 0;
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s->align = (1 << s->fmt_stereo) - 1;
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if (s->block_size & s->align)
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dolog ("warning: unaligned buffer\n");
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ldebug ("freq %d, stereo %d, sign %d, bits %d, "
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"dma %d, auto %d, fifo %d, high %d\n",
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s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits,
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@ -260,8 +274,13 @@ static void dma_cmd (SB16State *s, uint8_t cmd, uint8_t d0, int dma_len)
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s->block_size = dma_len + 1;
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s->block_size <<= (s->fmt_bits == 16);
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if (!s->dma_auto) /* Miles Sound System ? */
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if (!s->dma_auto) {
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/* It is clear that for DOOM and auto-init this value
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shouldn't take stereo into account, while Miles Sound Systems
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setsound.exe with single transfer mode wouldn't work without it
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wonders of SB16 yet again */
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s->block_size <<= s->fmt_stereo;
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}
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ldebug ("freq %d, stereo %d, sign %d, bits %d, "
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"dma %d, auto %d, fifo %d, high %d\n",
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@ -290,6 +309,8 @@ static void dma_cmd (SB16State *s, uint8_t cmd, uint8_t d0, int dma_len)
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s->bytes_per_second = (s->freq << s->fmt_stereo) << (s->fmt_bits == 16);
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s->highspeed = 0;
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s->align = (1 << (s->fmt_stereo + (s->fmt_bits == 16))) - 1;
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if (s->block_size & s->align)
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dolog ("warning: unaligned buffer\n");
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if (s->freq)
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s->voice = AUD_open (s->voice, "sb16", s->freq,
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@ -373,6 +394,10 @@ static void command (SB16State *s, uint8_t cmd)
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s->block_size = 0;
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break;
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case 0x1c: /* Auto-Initialize DMA DAC, 8-bit */
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control (s, 1);
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break;
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case 0x20: /* Direct ADC, Juice/PL */
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dsp_out_data (s, 0xff);
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goto warn;
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@ -607,9 +632,7 @@ static void complete (SB16State *s)
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break;
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case 0x14:
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dma_cmd8 (s, 0, dsp_get_lohi (s));
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/* s->can_write = 0; */
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/* qemu_mod_timer (s->aux_ts, qemu_get_clock (vm_clock) + (ticks_per_sec * 320) / 1000000); */
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dma_cmd8 (s, 0, dsp_get_lohi (s) + 1);
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break;
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case 0x40:
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@ -626,22 +649,20 @@ static void complete (SB16State *s)
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break;
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case 0x48:
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s->block_size = dsp_get_lohi (s);
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/* s->highspeed = 1; */
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s->block_size = dsp_get_lohi (s) + 1;
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ldebug ("set dma block len %d\n", s->block_size);
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break;
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case 0x80:
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{
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int samples, bytes;
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int freq, samples, bytes;
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int64_t ticks;
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if (-1 == s->freq)
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s->freq = 11025;
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samples = dsp_get_lohi (s);
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freq = s->freq > 0 ? s->freq : 11025;
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samples = dsp_get_lohi (s) + 1;
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bytes = samples << s->fmt_stereo << (s->fmt_bits == 16);
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ticks = bytes ? (ticks_per_sec / (s->freq / bytes)) : 0;
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if (!bytes || ticks < ticks_per_sec / 1024)
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ticks = (bytes * ticks_per_sec) / freq;
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if (ticks < ticks_per_sec / 1024)
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pic_set_irq (s->irq, 1);
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else
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qemu_mod_timer (s->aux_ts, qemu_get_clock (vm_clock) + ticks);
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@ -658,7 +679,7 @@ static void complete (SB16State *s)
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case 0xe2:
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d0 = dsp_get_data (s);
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dolog ("E2 = %#x\n", d0);
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ldebug ("E2 = %#x\n", d0);
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break;
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case 0xe4:
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@ -967,6 +988,9 @@ static IO_WRITE_PROTO(mixer_write_indexw)
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static IO_READ_PROTO(mixer_read)
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{
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SB16State *s = opaque;
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#ifndef DEBUG_SB16_MOST
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if (s->mixer_nreg != 0x82)
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#endif
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ldebug ("mixer_read[%#x] -> %#x\n",
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s->mixer_nreg, s->mixer_regs[s->mixer_nreg]);
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return s->mixer_regs[s->mixer_nreg];
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@ -1049,8 +1073,9 @@ static int SB_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len)
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}
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#ifdef DEBUG_SB16_MOST
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ldebug ("pos %5d free %5d size %5d till % 5d copy %5d dma size %5d\n",
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dma_pos, free, dma_len, s->left_till_irq, copy, s->block_size);
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ldebug ("pos %5d free %5d size %5d till % 5d copy %5d written %5d size %5d\n",
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dma_pos, free, dma_len, s->left_till_irq, copy, written,
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s->block_size);
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#endif
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while (s->left_till_irq <= 0) {
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