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Merge branch 'topic/timestamp' into for-next

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This commit is contained in:
Takashi Iwai
2015-02-23 09:15:02 +01:00
parent 0eee62e08c c72638bdaa
commit 72f770c6ac
7 changed files with 443 additions and 54 deletions
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28
sound/core/pcm_compat.c
View File

@@ -194,18 +194,30 @@ struct snd_pcm_status32 {
u32 avail_max;
u32 overrange;
s32 suspended_state;
u32 reserved_alignment;
u32 audio_tstamp_data;
struct compat_timespec audio_tstamp;
unsigned char reserved[56-sizeof(struct compat_timespec)];
struct compat_timespec driver_tstamp;
u32 audio_tstamp_accuracy;
unsigned char reserved[52-2*sizeof(struct compat_timespec)];
} __attribute__((packed));
static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
struct snd_pcm_status32 __user *src)
struct snd_pcm_status32 __user *src,
bool ext)
{
struct snd_pcm_status status;
int err;
memset(&status, 0, sizeof(status));
/*
* with extension, parameters are read/write,
* get audio_tstamp_data from user,
* ignore rest of status structure
*/
if (ext && get_user(status.audio_tstamp_data,
(u32 __user *)(&src->audio_tstamp_data)))
return -EFAULT;
err = snd_pcm_status(substream, &status);
if (err < 0)
return err;
@@ -222,7 +234,10 @@ static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
put_user(status.avail_max, &src->avail_max) ||
put_user(status.overrange, &src->overrange) ||
put_user(status.suspended_state, &src->suspended_state) ||
compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp))
put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
compat_put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
return -EFAULT;
return err;
@@ -457,6 +472,7 @@ enum {
SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32),
SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32),
SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct snd_pcm_status32),
SNDRV_PCM_IOCTL_STATUS_EXT32 = _IOWR('A', 0x24, struct snd_pcm_status32),
SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32),
SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32),
SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32),
@@ -517,7 +533,9 @@ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned l
case SNDRV_PCM_IOCTL_SW_PARAMS32:
return snd_pcm_ioctl_sw_params_compat(substream, argp);
case SNDRV_PCM_IOCTL_STATUS32:
return snd_pcm_status_user_compat(substream, argp);
return snd_pcm_status_user_compat(substream, argp, false);
case SNDRV_PCM_IOCTL_STATUS_EXT32:
return snd_pcm_status_user_compat(substream, argp, true);
case SNDRV_PCM_IOCTL_SYNC_PTR32:
return snd_pcm_ioctl_sync_ptr_compat(substream, argp);
case SNDRV_PCM_IOCTL_CHANNEL_INFO32:

86
sound/core/pcm_lib.c
View File

@@ -232,6 +232,49 @@ int snd_pcm_update_state(struct snd_pcm_substream *substream,
return 0;
}
static void update_audio_tstamp(struct snd_pcm_substream *substream,
struct timespec *curr_tstamp,
struct timespec *audio_tstamp)
{
struct snd_pcm_runtime *runtime = substream->runtime;
u64 audio_frames, audio_nsecs;
struct timespec driver_tstamp;
if (runtime->tstamp_mode != SNDRV_PCM_TSTAMP_ENABLE)
return;
if (!(substream->ops->get_time_info) ||
(runtime->audio_tstamp_report.actual_type ==
SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT)) {
/*
* provide audio timestamp derived from pointer position
* add delay only if requested
*/
audio_frames = runtime->hw_ptr_wrap + runtime->status->hw_ptr;
if (runtime->audio_tstamp_config.report_delay) {
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
audio_frames -= runtime->delay;
else
audio_frames += runtime->delay;
}
audio_nsecs = div_u64(audio_frames * 1000000000LL,
runtime->rate);
*audio_tstamp = ns_to_timespec(audio_nsecs);
}
runtime->status->audio_tstamp = *audio_tstamp;
runtime->status->tstamp = *curr_tstamp;
/*
* re-take a driver timestamp to let apps detect if the reference tstamp
* read by low-level hardware was provided with a delay
*/
snd_pcm_gettime(substream->runtime, (struct timespec *)&driver_tstamp);
runtime->driver_tstamp = driver_tstamp;
}
static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
unsigned int in_interrupt)
{
@@ -256,11 +299,18 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
pos = substream->ops->pointer(substream);
curr_jiffies = jiffies;
if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) {
snd_pcm_gettime(runtime, (struct timespec *)&curr_tstamp);
if ((substream->ops->get_time_info) &&
(runtime->audio_tstamp_config.type_requested != SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT)) {
substream->ops->get_time_info(substream, &curr_tstamp,
&audio_tstamp,
&runtime->audio_tstamp_config,
&runtime->audio_tstamp_report);
if ((runtime->hw.info & SNDRV_PCM_INFO_HAS_WALL_CLOCK) &&
(substream->ops->wall_clock))
substream->ops->wall_clock(substream, &audio_tstamp);
/* re-test in case tstamp type is not supported in hardware and was demoted to DEFAULT */
if (runtime->audio_tstamp_report.actual_type == SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT)
snd_pcm_gettime(runtime, (struct timespec *)&curr_tstamp);
} else
snd_pcm_gettime(runtime, (struct timespec *)&curr_tstamp);
}
if (pos == SNDRV_PCM_POS_XRUN) {
@@ -403,8 +453,10 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
}
no_delta_check:
if (runtime->status->hw_ptr == new_hw_ptr)
if (runtime->status->hw_ptr == new_hw_ptr) {
update_audio_tstamp(substream, &curr_tstamp, &audio_tstamp);
return 0;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
runtime->silence_size > 0)
@@ -426,30 +478,8 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
snd_BUG_ON(crossed_boundary != 1);
runtime->hw_ptr_wrap += runtime->boundary;
}
if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) {
runtime->status->tstamp = curr_tstamp;
if (!(runtime->hw.info & SNDRV_PCM_INFO_HAS_WALL_CLOCK)) {
/*
* no wall clock available, provide audio timestamp
* derived from pointer position+delay
*/
u64 audio_frames, audio_nsecs;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
audio_frames = runtime->hw_ptr_wrap
+ runtime->status->hw_ptr
- runtime->delay;
else
audio_frames = runtime->hw_ptr_wrap
+ runtime->status->hw_ptr
+ runtime->delay;
audio_nsecs = div_u64(audio_frames * 1000000000LL,
runtime->rate);
audio_tstamp = ns_to_timespec(audio_nsecs);
}
runtime->status->audio_tstamp = audio_tstamp;
}
update_audio_tstamp(substream, &curr_tstamp, &audio_tstamp);
return snd_pcm_update_state(substream, runtime);
}

41
sound/core/pcm_native.c
View File

@@ -707,6 +707,23 @@ int snd_pcm_status(struct snd_pcm_substream *substream,
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_stream_lock_irq(substream);
snd_pcm_unpack_audio_tstamp_config(status->audio_tstamp_data,
&runtime->audio_tstamp_config);
/* backwards compatible behavior */
if (runtime->audio_tstamp_config.type_requested ==
SNDRV_PCM_AUDIO_TSTAMP_TYPE_COMPAT) {
if (runtime->hw.info & SNDRV_PCM_INFO_HAS_WALL_CLOCK)
runtime->audio_tstamp_config.type_requested =
SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK;
else
runtime->audio_tstamp_config.type_requested =
SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT;
runtime->audio_tstamp_report.valid = 0;
} else
runtime->audio_tstamp_report.valid = 1;
status->state = runtime->status->state;
status->suspended_state = runtime->status->suspended_state;
if (status->state == SNDRV_PCM_STATE_OPEN)
@@ -716,8 +733,15 @@ int snd_pcm_status(struct snd_pcm_substream *substream,
snd_pcm_update_hw_ptr(substream);
if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) {
status->tstamp = runtime->status->tstamp;
status->driver_tstamp = runtime->driver_tstamp;
status->audio_tstamp =
runtime->status->audio_tstamp;
if (runtime->audio_tstamp_report.valid == 1)
/* backwards compatibility, no report provided in COMPAT mode */
snd_pcm_pack_audio_tstamp_report(&status->audio_tstamp_data,
&status->audio_tstamp_accuracy,
&runtime->audio_tstamp_report);
goto _tstamp_end;
}
} else {
@@ -753,12 +777,21 @@ int snd_pcm_status(struct snd_pcm_substream *substream,
}
static int snd_pcm_status_user(struct snd_pcm_substream *substream,
struct snd_pcm_status __user * _status)
struct snd_pcm_status __user * _status,
bool ext)
{
struct snd_pcm_status status;
int res;
memset(&status, 0, sizeof(status));
/*
* with extension, parameters are read/write,
* get audio_tstamp_data from user,
* ignore rest of status structure
*/
if (ext && get_user(status.audio_tstamp_data,
(u32 __user *)(&_status->audio_tstamp_data)))
return -EFAULT;
res = snd_pcm_status(substream, &status);
if (res < 0)
return res;
@@ -2723,7 +2756,9 @@ static int snd_pcm_common_ioctl1(struct file *file,
case SNDRV_PCM_IOCTL_SW_PARAMS:
return snd_pcm_sw_params_user(substream, arg);
case SNDRV_PCM_IOCTL_STATUS:
return snd_pcm_status_user(substream, arg);
return snd_pcm_status_user(substream, arg, false);
case SNDRV_PCM_IOCTL_STATUS_EXT:
return snd_pcm_status_user(substream, arg, true);
case SNDRV_PCM_IOCTL_CHANNEL_INFO:
return snd_pcm_channel_info_user(substream, arg);
case SNDRV_PCM_IOCTL_PREPARE: