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-rw-r--r--sound/core/pcm_compat.c20
-rw-r--r--sound/core/pcm_lib.c57
-rw-r--r--sound/core/pcm_native.c2
3 files changed, 64 insertions, 15 deletions
diff --git a/sound/core/pcm_compat.c b/sound/core/pcm_compat.c
index 91cdf9435fec..af49721ba0e3 100644
--- a/sound/core/pcm_compat.c
+++ b/sound/core/pcm_compat.c
@@ -190,7 +190,9 @@ struct snd_pcm_status32 {
u32 avail_max;
u32 overrange;
s32 suspended_state;
- unsigned char reserved[60];
+ u32 reserved_alignment;
+ struct compat_timespec audio_tstamp;
+ unsigned char reserved[56-sizeof(struct compat_timespec)];
} __attribute__((packed));
@@ -205,17 +207,16 @@ static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
return err;
if (put_user(status.state, &src->state) ||
- put_user(status.trigger_tstamp.tv_sec, &src->trigger_tstamp.tv_sec) ||
- put_user(status.trigger_tstamp.tv_nsec, &src->trigger_tstamp.tv_nsec) ||
- put_user(status.tstamp.tv_sec, &src->tstamp.tv_sec) ||
- put_user(status.tstamp.tv_nsec, &src->tstamp.tv_nsec) ||
+ compat_put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
+ compat_put_timespec(&status.tstamp, &src->tstamp) ||
put_user(status.appl_ptr, &src->appl_ptr) ||
put_user(status.hw_ptr, &src->hw_ptr) ||
put_user(status.delay, &src->delay) ||
put_user(status.avail, &src->avail) ||
put_user(status.avail_max, &src->avail_max) ||
put_user(status.overrange, &src->overrange) ||
- put_user(status.suspended_state, &src->suspended_state))
+ put_user(status.suspended_state, &src->suspended_state) ||
+ compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp))
return -EFAULT;
return err;
@@ -364,6 +365,7 @@ struct snd_pcm_mmap_status32 {
u32 hw_ptr;
struct compat_timespec tstamp;
s32 suspended_state;
+ struct compat_timespec audio_tstamp;
} __attribute__((packed));
struct snd_pcm_mmap_control32 {
@@ -426,12 +428,14 @@ static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
sstatus.hw_ptr = status->hw_ptr % boundary;
sstatus.tstamp = status->tstamp;
sstatus.suspended_state = status->suspended_state;
+ sstatus.audio_tstamp = status->audio_tstamp;
snd_pcm_stream_unlock_irq(substream);
if (put_user(sstatus.state, &src->s.status.state) ||
put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
- put_user(sstatus.tstamp.tv_sec, &src->s.status.tstamp.tv_sec) ||
- put_user(sstatus.tstamp.tv_nsec, &src->s.status.tstamp.tv_nsec) ||
+ compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
+ compat_put_timespec(&sstatus.audio_tstamp,
+ &src->s.status.audio_tstamp) ||
put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
put_user(scontrol.avail_min, &src->c.control.avail_min))
return -EFAULT;
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index f42c10a43315..c4840ff75d00 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -316,6 +316,8 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
unsigned long jdelta;
unsigned long curr_jiffies;
struct timespec curr_tstamp;
+ struct timespec audio_tstamp;
+ int crossed_boundary = 0;
old_hw_ptr = runtime->status->hw_ptr;
@@ -327,9 +329,14 @@ 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)
+ if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) {
snd_pcm_gettime(runtime, (struct timespec *)&curr_tstamp);
+ if ((runtime->hw.info & SNDRV_PCM_INFO_HAS_WALL_CLOCK) &&
+ (substream->ops->wall_clock))
+ substream->ops->wall_clock(substream, &audio_tstamp);
+ }
+
if (pos == SNDRV_PCM_POS_XRUN) {
xrun(substream);
return -EPIPE;
@@ -360,8 +367,10 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
hdelta = curr_jiffies - runtime->hw_ptr_jiffies;
if (hdelta > runtime->hw_ptr_buffer_jiffies/2) {
hw_base += runtime->buffer_size;
- if (hw_base >= runtime->boundary)
+ if (hw_base >= runtime->boundary) {
hw_base = 0;
+ crossed_boundary++;
+ }
new_hw_ptr = hw_base + pos;
goto __delta;
}
@@ -371,8 +380,10 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
/* pointer crosses the end of the ring buffer */
if (new_hw_ptr < old_hw_ptr) {
hw_base += runtime->buffer_size;
- if (hw_base >= runtime->boundary)
+ if (hw_base >= runtime->boundary) {
hw_base = 0;
+ crossed_boundary++;
+ }
new_hw_ptr = hw_base + pos;
}
__delta:
@@ -410,8 +421,10 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
while (hdelta > xrun_threshold) {
delta += runtime->buffer_size;
hw_base += runtime->buffer_size;
- if (hw_base >= runtime->boundary)
+ if (hw_base >= runtime->boundary) {
hw_base = 0;
+ crossed_boundary++;
+ }
new_hw_ptr = hw_base + pos;
hdelta -= runtime->hw_ptr_buffer_jiffies;
}
@@ -456,8 +469,10 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
/* the delta value is small or zero in most cases */
while (delta > 0) {
new_hw_ptr += runtime->period_size;
- if (new_hw_ptr >= runtime->boundary)
+ if (new_hw_ptr >= runtime->boundary) {
new_hw_ptr -= runtime->boundary;
+ crossed_boundary--;
+ }
delta--;
}
/* align hw_base to buffer_size */
@@ -507,9 +522,35 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
runtime->hw_ptr_base = hw_base;
runtime->status->hw_ptr = new_hw_ptr;
runtime->hw_ptr_jiffies = curr_jiffies;
- if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE)
+ if (crossed_boundary) {
+ 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;
+ }
+
return snd_pcm_update_state(substream, runtime);
}
@@ -1661,8 +1702,10 @@ static int snd_pcm_lib_ioctl_reset(struct snd_pcm_substream *substream,
if (snd_pcm_running(substream) &&
snd_pcm_update_hw_ptr(substream) >= 0)
runtime->status->hw_ptr %= runtime->buffer_size;
- else
+ else {
runtime->status->hw_ptr = 0;
+ runtime->hw_ptr_wrap = 0;
+ }
snd_pcm_stream_unlock_irqrestore(substream, flags);
return 0;
}
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 6e8872de5ba0..b329ca58e63c 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -602,6 +602,8 @@ 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->audio_tstamp =
+ runtime->status->audio_tstamp;
goto _tstamp_end;
}
}
generated by cgit v1.2.3 (git 2.51.0) at 2025-09-20 12:17:41 +0000