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author | Takashi Iwai <tiwai@suse.de> | 2009-06-10 07:26:41 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2009-06-10 07:26:41 +0200 |
commit | 3b88bc522986ae853670fcba71bb3761c84f7867 (patch) | |
tree | 149a6239c963dfa1111e1ffa736e52edbeaa07bd | |
parent | eabaf0634a9034f2e487b0be347edc1460c026a4 (diff) | |
parent | c00701101b82f2bc61dfc259748ec6e5288af6a9 (diff) | |
download | linux-3b88bc522986ae853670fcba71bb3761c84f7867.tar.bz2 |
Merge branch 'topic/pcm-jiffies-check' into for-linus
* topic/pcm-jiffies-check:
ALSA: pcm - A helper function to compose PCM stream name for debug prints
ALSA: pcm - Fix update of runtime->hw_ptr_interrupt
ALSA: pcm - Fix a typo in hw_ptr update check
ALSA: PCM midlevel: lower jiffies check margin using runtime->delay value
ALSA: PCM midlevel: Do not update hw_ptr_jiffies when hw_ptr is not changed
ALSA: PCM midlevel: introduce mask for xrun_debug() macro
ALSA: PCM midlevel: improve fifo_size handling
-rw-r--r-- | include/sound/asound.h | 1 | ||||
-rw-r--r-- | include/sound/pcm.h | 1 | ||||
-rw-r--r-- | sound/core/pcm_lib.c | 89 | ||||
-rw-r--r-- | sound/core/pcm_native.c | 15 |
4 files changed, 84 insertions, 22 deletions
diff --git a/include/sound/asound.h b/include/sound/asound.h index 6add80fc2512..82aed3f47534 100644 --- a/include/sound/asound.h +++ b/include/sound/asound.h @@ -255,6 +255,7 @@ typedef int __bitwise snd_pcm_subformat_t; #define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */ #define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */ #define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */ +#define SNDRV_PCM_INFO_FIFO_IN_FRAMES 0x80000000 /* internal kernel flag - FIFO size is in frames */ typedef int __bitwise snd_pcm_state_t; #define SNDRV_PCM_STATE_OPEN ((__force snd_pcm_state_t) 0) /* stream is open */ diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 2092274212b9..23893523dc8c 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -98,6 +98,7 @@ struct snd_pcm_ops { #define SNDRV_PCM_IOCTL1_INFO 1 #define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2 #define SNDRV_PCM_IOCTL1_GSTATE 3 +#define SNDRV_PCM_IOCTL1_FIFO_SIZE 4 #define SNDRV_PCM_TRIGGER_STOP 0 #define SNDRV_PCM_TRIGGER_START 1 diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index a7482874c451..333e4dd29450 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -127,24 +127,37 @@ void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_ufram } #ifdef CONFIG_SND_PCM_XRUN_DEBUG -#define xrun_debug(substream) ((substream)->pstr->xrun_debug) +#define xrun_debug(substream, mask) ((substream)->pstr->xrun_debug & (mask)) #else -#define xrun_debug(substream) 0 +#define xrun_debug(substream, mask) 0 #endif -#define dump_stack_on_xrun(substream) do { \ - if (xrun_debug(substream) > 1) \ - dump_stack(); \ +#define dump_stack_on_xrun(substream) do { \ + if (xrun_debug(substream, 2)) \ + dump_stack(); \ } while (0) +static void pcm_debug_name(struct snd_pcm_substream *substream, + char *name, size_t len) +{ + snprintf(name, len, "pcmC%dD%d%c:%d", + substream->pcm->card->number, + substream->pcm->device, + substream->stream ? 'c' : 'p', + substream->number); +} + static void xrun(struct snd_pcm_substream *substream) { + struct snd_pcm_runtime *runtime = substream->runtime; + + if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) + snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp); snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); - if (xrun_debug(substream)) { - snd_printd(KERN_DEBUG "XRUN: pcmC%dD%d%c\n", - substream->pcm->card->number, - substream->pcm->device, - substream->stream ? 'c' : 'p'); + if (xrun_debug(substream, 1)) { + char name[16]; + pcm_debug_name(substream, name, sizeof(name)); + snd_printd(KERN_DEBUG "XRUN: %s\n", name); dump_stack_on_xrun(substream); } } @@ -155,16 +168,16 @@ snd_pcm_update_hw_ptr_pos(struct snd_pcm_substream *substream, { snd_pcm_uframes_t pos; - if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) - snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp); pos = substream->ops->pointer(substream); if (pos == SNDRV_PCM_POS_XRUN) return pos; /* XRUN */ if (pos >= runtime->buffer_size) { if (printk_ratelimit()) { - snd_printd(KERN_ERR "BUG: stream = %i, pos = 0x%lx, " + char name[16]; + pcm_debug_name(substream, name, sizeof(name)); + snd_printd(KERN_ERR "BUG: %s, pos = 0x%lx, " "buffer size = 0x%lx, period size = 0x%lx\n", - substream->stream, pos, runtime->buffer_size, + name, pos, runtime->buffer_size, runtime->period_size); } pos = 0; @@ -198,7 +211,7 @@ static int snd_pcm_update_hw_ptr_post(struct snd_pcm_substream *substream, #define hw_ptr_error(substream, fmt, args...) \ do { \ - if (xrun_debug(substream)) { \ + if (xrun_debug(substream, 1)) { \ if (printk_ratelimit()) { \ snd_printd("PCM: " fmt, ##args); \ } \ @@ -252,7 +265,7 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream) } /* Do jiffies check only in xrun_debug mode */ - if (!xrun_debug(substream)) + if (!xrun_debug(substream, 4)) goto no_jiffies_check; /* Skip the jiffies check for hardwares with BATCH flag. @@ -262,6 +275,9 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream) if (runtime->hw.info & SNDRV_PCM_INFO_BATCH) goto no_jiffies_check; hdelta = new_hw_ptr - old_hw_ptr; + if (hdelta < runtime->delay) + goto no_jiffies_check; + hdelta -= runtime->delay; jdelta = jiffies - runtime->hw_ptr_jiffies; if (((hdelta * HZ) / runtime->rate) > jdelta + HZ/100) { delta = jdelta / @@ -295,14 +311,20 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream) hw_ptr_interrupt = new_hw_ptr - new_hw_ptr % runtime->period_size; } + runtime->hw_ptr_interrupt = hw_ptr_interrupt; + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && runtime->silence_size > 0) snd_pcm_playback_silence(substream, new_hw_ptr); + if (runtime->status->hw_ptr == new_hw_ptr) + return 0; + runtime->hw_ptr_base = hw_base; runtime->status->hw_ptr = new_hw_ptr; runtime->hw_ptr_jiffies = jiffies; - runtime->hw_ptr_interrupt = hw_ptr_interrupt; + if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) + snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp); return snd_pcm_update_hw_ptr_post(substream, runtime); } @@ -343,8 +365,12 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream) new_hw_ptr = hw_base + pos; } /* Do jiffies check only in xrun_debug mode */ - if (xrun_debug(substream) && - ((delta * HZ) / runtime->rate) > jdelta + HZ/100) { + if (!xrun_debug(substream, 4)) + goto no_jiffies_check; + if (delta < runtime->delay) + goto no_jiffies_check; + delta -= runtime->delay; + if (((delta * HZ) / runtime->rate) > jdelta + HZ/100) { hw_ptr_error(substream, "hw_ptr skipping! " "(pos=%ld, delta=%ld, period=%ld, jdelta=%lu/%lu)\n", @@ -353,13 +379,19 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream) ((delta * HZ) / runtime->rate)); return 0; } + no_jiffies_check: if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && runtime->silence_size > 0) snd_pcm_playback_silence(substream, new_hw_ptr); + if (runtime->status->hw_ptr == new_hw_ptr) + return 0; + runtime->hw_ptr_base = hw_base; runtime->status->hw_ptr = new_hw_ptr; runtime->hw_ptr_jiffies = jiffies; + if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) + snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp); return snd_pcm_update_hw_ptr_post(substream, runtime); } @@ -1525,6 +1557,23 @@ static int snd_pcm_lib_ioctl_channel_info(struct snd_pcm_substream *substream, return 0; } +static int snd_pcm_lib_ioctl_fifo_size(struct snd_pcm_substream *substream, + void *arg) +{ + struct snd_pcm_hw_params *params = arg; + snd_pcm_format_t format; + int channels, width; + + params->fifo_size = substream->runtime->hw.fifo_size; + if (!(substream->runtime->hw.info & SNDRV_PCM_INFO_FIFO_IN_FRAMES)) { + format = params_format(params); + channels = params_channels(params); + width = snd_pcm_format_physical_width(format); + params->fifo_size /= width * channels; + } + return 0; +} + /** * snd_pcm_lib_ioctl - a generic PCM ioctl callback * @substream: the pcm substream instance @@ -1546,6 +1595,8 @@ int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream, return snd_pcm_lib_ioctl_reset(substream, arg); case SNDRV_PCM_IOCTL1_CHANNEL_INFO: return snd_pcm_lib_ioctl_channel_info(substream, arg); + case SNDRV_PCM_IOCTL1_FIFO_SIZE: + return snd_pcm_lib_ioctl_fifo_size(substream, arg); } return -ENXIO; } diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 45dc53fcfa2f..84da3ba17c86 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -312,9 +312,18 @@ int snd_pcm_hw_refine(struct snd_pcm_substream *substream, hw = &substream->runtime->hw; if (!params->info) - params->info = hw->info; - if (!params->fifo_size) - params->fifo_size = hw->fifo_size; + params->info = hw->info & ~SNDRV_PCM_INFO_FIFO_IN_FRAMES; + if (!params->fifo_size) { + if (snd_mask_min(¶ms->masks[SNDRV_PCM_HW_PARAM_FORMAT]) == + snd_mask_max(¶ms->masks[SNDRV_PCM_HW_PARAM_FORMAT]) && + snd_mask_min(¶ms->masks[SNDRV_PCM_HW_PARAM_CHANNELS]) == + snd_mask_max(¶ms->masks[SNDRV_PCM_HW_PARAM_CHANNELS])) { + changed = substream->ops->ioctl(substream, + SNDRV_PCM_IOCTL1_FIFO_SIZE, params); + if (params < 0) + return changed; + } + } params->rmask = 0; return 0; } |