diff options
Diffstat (limited to 'loopback/loopback.c')
| -rw-r--r-- | loopback/loopback.c | 56 |
1 files changed, 48 insertions, 8 deletions
diff --git a/loopback/loopback.c b/loopback/loopback.c index 6f2a5d9..215ed5d 100644 --- a/loopback/loopback.c +++ b/loopback/loopback.c @@ -16,6 +16,20 @@ MODULE_AUTHOR("MFARRUGI <mark.farrugia@fiberdyne.com.au>"); MODULE_DESCRIPTION("Sample Audio Path Module Interface"); MODULE_LICENSE("GPL v2"); +#define AP_LOGNAME "LOOPAP" + +#define DERROR(fmt, args...) \ + printk(KERN_ERR "[%s] %d:%s " fmt "\n", AP_LOGNAME, __LINE__, \ + __func__, ##args) + +#define DINFO(fmt, args...) \ + printk(KERN_INFO "[%s] %d:%s " fmt "\n", AP_LOGNAME, __LINE__, \ + __func__, ##args) + +#define DPRINT(fmt, args...) \ + printk(KERN_DEBUG "[%s] %d:%s " fmt "\n", AP_LOGNAME, __LINE__, \ + __func__, ##args) + static struct avirt_coreinfo *coreinfo; struct loopback_pcm { @@ -148,6 +162,7 @@ void systimer_update(struct loopback_pcm *dpcm) * Loopback Timer Callback *******/ +// void loopback_callback(struct timer_list *tlist) { struct loopback_pcm *dpcm = from_timer(dpcm, tlist, timer); @@ -172,7 +187,15 @@ void loopback_callback(struct timer_list *tlist) ******************************************************************************/ static int loopback_pcm_open(struct snd_pcm_substream *substream) { - int err = systimer_create(substream); + int err; + + struct snd_pcm_runtime *runtime = substream->runtime; + struct loopback_pcm *dpcm = runtime->private_data; + + DINFO("Open\n%s\nrate: %d\nch: %d", substream->pcm->name, runtime->rate, + runtime->channels); + + err = systimer_create(substream); if (err < 0) return err; @@ -181,6 +204,11 @@ static int loopback_pcm_open(struct snd_pcm_substream *substream) static int loopback_pcm_close(struct snd_pcm_substream *substream) { + struct snd_pcm_runtime *runtime = substream->runtime; + struct loopback_pcm *dpcm = runtime->private_data; + + DINFO("Close"); + systimer_free(substream); return 0; } @@ -188,11 +216,15 @@ static int loopback_pcm_close(struct snd_pcm_substream *substream) static snd_pcm_uframes_t loopback_pcm_pointer(struct snd_pcm_substream *substream) { + DINFO("Pointer"); + return systimer_pointer(substream); } static int loopback_pcm_trigger(struct snd_pcm_substream *substream, int cmd) { + DINFO("Trigger"); + switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: @@ -206,6 +238,12 @@ static int loopback_pcm_trigger(struct snd_pcm_substream *substream, int cmd) static int loopback_pcm_prepare(struct snd_pcm_substream *substream) { + struct snd_pcm_runtime *runtime = substream->runtime; + struct loopback_pcm *dpcm = runtime->private_data; + + DINFO("Prepare"); + DINFO("Runtime\nrate: %d\nch: %d", runtime->rate, runtime->channels); + return systimer_prepare(substream); } @@ -225,14 +263,16 @@ static struct snd_pcm_hardware loopbackap_hw = { .info = (SNDRV_PCM_INFO_INTERLEAVED // Channel interleaved audio | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID), - .rates = SNDRV_PCM_RATE_48000, - .rate_min = 2000, + .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | + SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | + SNDRV_PCM_RATE_48000, + .rate_min = 8000, .rate_max = 48000, .channels_min = 1, .channels_max = 8, - .buffer_bytes_max = 32768, + //.buffer_bytes_max = 32768, .periods_min = 1, - .periods_max = 1024, + .periods_max = 8, }; static struct avirt_audiopath loopbackap_module = { @@ -248,11 +288,11 @@ static int __init loopback_init(void) { int err = 0; - pr_info("init()\n"); + DINFO("init()\n"); err = avirt_register_audiopath(&loopbackap_module, &coreinfo); if ((err < 0) || (!coreinfo)) { - pr_err("%s: coreinfo is NULL!\n", __func__); + DERROR("%s: coreinfo is NULL!\n", __func__); return err; } @@ -261,7 +301,7 @@ static int __init loopback_init(void) static void __exit loopback_exit(void) { - pr_info("exit()\n"); + DINFO("exit()\n"); avirt_deregister_audiopath(&loopbackap_module); } |