[Bug 10731] Memory usage much higher than in Wndows

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=10731

Raymond <superquad.vortex2 at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |superquad.vortex2 at gmail.com

--- Comment #16 from Raymond <superquad.vortex2 at gmail.com> 2010-09-17 22:40:21 CDT ---
trace:wave:OSS_WaveOutInit /dev/mixer: PulseAudio Virtual OSS
trace:wave:OSS_Info Formats=0000003b ( AFMT_MU_LAW AFMT_A_LAW AFMT_U8
AFMT_S16_LE AFMT_S16_BE )
trace:wave:OSS_Info Caps=00005100
trace:wave:OSS_Info     Revision: 0
trace:wave:OSS_Info     Duplex: true
trace:wave:OSS_Info     Realtime: false
trace:wave:OSS_Info     Batch: false
trace:wave:OSS_Info     Coproc: false
trace:wave:OSS_Info     Trigger: true
trace:wave:OSS_Info     Mmap: false
trace:wave:OSS_Info     Multi: true
trace:wave:OSS_Info     Bind: false



wineoss.drv assume that sound card support hardware mixing when DSP_CAP_MULTI:
true  ( support multi open )



#ifdef DSP_CAP_MULTI    /* not every oss has this */
         /* check for hardware secondary buffer support (multi open) */
         if ((arg & DSP_CAP_MULTI) &&
             (ossdev->out_caps.dwSupport & WAVECAPS_DIRECTSOUND)) {
             TRACE("hardware secondary buffer support available\n");

             ossdev->ds_caps.dwMaxHwMixingAllBuffers = 16;
             ossdev->ds_caps.dwMaxHwMixingStaticBuffers = 0;
             ossdev->ds_caps.dwMaxHwMixingStreamingBuffers = 16;

             ossdev->ds_caps.dwFreeHwMixingAllBuffers = 16;
             ossdev->ds_caps.dwFreeHwMixingStaticBuffers = 0;
             ossdev->ds_caps.dwFreeHwMixingStreamingBuffers = 16;
         }
#endif




For ALSA OSS emulation , this mean that your ALSA sound card driver has multi
subdevices


static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res)
{
    if (substream == NULL) {
        res &= ~DSP_CAP_DUPLEX;
        return res;
    }
#ifdef DSP_CAP_MULTI
    if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
        if (substream->pstr->substream_count > 1)
            res |= DSP_CAP_MULTI;
#endif

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