Audiounit drift with c920 webcam (Bug 1329190) (#221)

* resampler: return unsed frames in all cases

* audiounit: Stop pushing silence if there are remaining frames

audiounit: Push linence based only on input length

* audiounit: Create async verbose log macro ALOGV

* audiounit: Create async normal log macro ALOG

* audiounit: Deregister alive listener (Bug 1321714)

* audiounit: Return listener on unexpected event

* audiounit: Initialize shutdown to true

* audiounit, resampler: apply review commnets

1 files changed, 4 insertions, 2 deletions

diff --git a/src/cubeb_resampler_internal.h b/src/cubeb_resampler_internal.h
index 9c17a51..bb5da05 100644
--- a/src/cubeb_resampler_internal.h
+++ b/src/cubeb_resampler_internal.h
@@ -222,7 +222,7 @@ public:
 
   /** Returns a buffer containing exactly `output_frame_count` resampled frames.
     * The consumer should not hold onto the pointer. */
-  T * output(size_t output_frame_count)
+  T * output(size_t output_frame_count, size_t * input_frames_used)
   {
     if (resampling_out_buffer.capacity() < frames_to_samples(output_frame_count)) {
       resampling_out_buffer.reserve(frames_to_samples(output_frame_count));
@@ -239,6 +239,7 @@ public:
     /* This shifts back any unresampled samples to the beginning of the input
        buffer. */
     resampling_in_buffer.pop(nullptr, frames_to_samples(in_len));
+    *input_frames_used = in_len;
 
     return resampling_out_buffer.data();
   }
@@ -376,7 +377,7 @@ public:
    * @parameter frames_needed the number of frames to be returned.
    * @return a buffer containing the delayed frames. The consumer should not
    * hold onto the pointer. */
-  T * output(uint32_t frames_needed)
+  T * output(uint32_t frames_needed, size_t * input_frames_used)
   {
     if (delay_output_buffer.capacity() < frames_to_samples(frames_needed)) {
       delay_output_buffer.reserve(frames_to_samples(frames_needed));
@@ -386,6 +387,7 @@ public:
     delay_output_buffer.push(delay_input_buffer.data(),
                              frames_to_samples(frames_needed));
     delay_input_buffer.pop(nullptr, frames_to_samples(frames_needed));
+    *input_frames_used = frames_needed;
 
     return delay_output_buffer.data();
   }