diff --git a/source/snd_alsa_0_6.c b/source/snd_alsa_0_6.c index 23c971b..77aab89 100644 --- a/source/snd_alsa_0_6.c +++ b/source/snd_alsa_0_6.c @@ -66,7 +66,6 @@ static int snd_inited; static snd_pcm_t *pcm_handle; -static snd_pcm_info_t cinfo; static snd_pcm_params_info_t cpinfo; static snd_pcm_params_t params; static snd_pcm_setup_t setup; @@ -75,6 +74,10 @@ static snd_pcm_mmap_status_t *mmap_status = NULL; static char *mmap_data = NULL; static int card=-1,dev=-1,subdev=-1;; +//XXX ugh, not defined in asoundlib.h +int snd_pcm_mmap_status(snd_pcm_t *pcm, snd_pcm_mmap_status_t **status); +int snd_pcm_mmap_control(snd_pcm_t *pcm, snd_pcm_mmap_control_t **control); + int check_card(int card) { snd_ctl_t *handle; @@ -116,7 +119,7 @@ qboolean SNDDMA_Init(void) { int rc=0,i; char *err_msg=""; - int rate,format,bps,stereo,frag_size,frame_size; + int rate=-1,format=-1,bps,stereo=-1,frag_size,frame_size; unsigned int mask; mask = snd_cards_mask(); @@ -130,6 +133,27 @@ qboolean SNDDMA_Init(void) if ((i=COM_CheckParm("-snddev"))!=0) { dev=atoi(com_argv[i+1]); } + if ((i=COM_CheckParm("-sndbits")) != 0) { + i = atoi(com_argv[i+1]); + if (i==16) { + format = SND_PCM_SFMT_S16_LE; + } else if (i==8) { + format = SND_PCM_SFMT_U8; + } else { + Con_Printf("Error: invalid sample bits: %d\n", i); + return 0; + } + } + if ((i=COM_CheckParm("-sndspeed")) != 0) { + rate = atoi(com_argv[i+1]); + if (rate!=44100 && rate!=22050 && rate!=11025) { + Con_Printf("Error: invalid sample rate: %d\n", rate); + return 0; + } + } + if ((i=COM_CheckParm("-sndmono")) != 0) { + stereo=0; + } if (card==-1) { for (card=0; card=2) { + //XXX can't support non-interleaved stereo + if (stereo && (cpinfo.flags & SND_PCM_INFO_INTERLEAVED) && cpinfo.max_channels>=2) { stereo=1; frame_size*=2; } else { @@ -200,48 +223,55 @@ qboolean SNDDMA_Init(void) } memset(¶ms, 0, sizeof(params)); - params.mode = SND_PCM_MODE_FRAME; - params.format.interleave=1; - params.format.format=format; + //XXX can't support non-interleaved stereo + params.xfer_mode = stereo ? SND_PCM_XFER_INTERLEAVED + : SND_PCM_XFER_NONINTERLEAVED; + params.format.sfmt=format; params.format.rate=rate; params.format.channels=stereo+1; - params.start_mode = SND_PCM_START_GO; - params.xrun_mode = SND_PCM_XRUN_RESTART; + params.start_mode = SND_PCM_START_EXPLICIT; + params.xrun_mode = SND_PCM_XRUN_NONE; params.buffer_size = (2<<16) / frame_size; params.frag_size=frag_size; params.avail_min = frag_size; - params.align = frag_size; params.xrun_max = 1024; - params.fill_mode = SND_PCM_FILL_SILENCE; - params.fill_max = 1024; params.boundary = params.buffer_size; - err_msg="audio params"; - if ((rc=snd_pcm_params(pcm_handle, ¶ms))<0) - goto error; + while (1) { + err_msg="audio params"; + if ((rc=snd_pcm_params(pcm_handle, ¶ms))<0) + goto error; + + memset(&setup, 0, sizeof(setup)); + err_msg="audio setup"; + if ((rc=snd_pcm_setup(pcm_handle, &setup))<0) + goto error; + if (setup.buffer_size == params.buffer_size) + break; + params.boundary = params.buffer_size = setup.buffer_size; + } err_msg="audio mmap"; - if ((rc=snd_pcm_mmap(pcm_handle, &mmap_status, &mmap_control, (void **)&mmap_data))<0) + if ((rc=snd_pcm_mmap(pcm_handle, (void**)&mmap_data))<0) + goto error; + if ((rc=snd_pcm_mmap_status(pcm_handle, &mmap_status))<0) + goto error; + if ((rc=snd_pcm_mmap_control(pcm_handle, &mmap_control))<0) goto error; err_msg="audio prepare"; if ((rc=snd_pcm_prepare(pcm_handle))<0) goto error; - memset(&setup, 0, sizeof(setup)); - err_msg="audio setup"; - if ((rc=snd_pcm_setup(pcm_handle, &setup))<0) - goto error; - shm=&sn; memset((dma_t*)shm,0,sizeof(*shm)); shm->splitbuffer = 0; shm->channels=setup.format.channels; shm->submission_chunk=frag_size; // don't mix less than this # shm->samplepos=0; // in mono samples - shm->samplebits=setup.format.format==SND_PCM_SFMT_S16_LE?16:8; - shm->samples=setup.buffer_size*frame_size/(shm->samplebits/8); // mono samples in buffer + shm->samplebits=setup.format.sfmt==SND_PCM_SFMT_S16_LE?16:8; + shm->samples=setup.buffer_size*shm->channels; // mono samples in buffer shm->speed=setup.format.rate; shm->buffer=(unsigned char*)mmap_data; Con_Printf("%5d stereo\n", shm->channels - 1); @@ -266,7 +296,7 @@ int SNDDMA_GetDMAPos(void) { size_t hw_ptr; if (!snd_inited) return 0; - hw_ptr = snd_pcm_hw_ptr (pcm_handle, 1); + hw_ptr = mmap_status->hw_ptr; //printf("%7d %7d\n", mmap_control->appl_ptr, hw_ptr); hw_ptr *= shm->channels; shm->samplepos = hw_ptr; @@ -297,7 +327,7 @@ void SNDDMA_Submit(void) mmap_control->appl_ptr=mmap_status->hw_ptr+count; switch (mmap_status->state) { case SND_PCM_STATE_PREPARED: - if ((rc=snd_pcm_go(pcm_handle))<0) { + if ((rc=snd_pcm_start(pcm_handle))<0) { fprintf(stderr, "unable to start playback. %s\n", snd_strerror(rc)); exit(1);