From 8d8b3c04015201aaf08e2bcbc33913af81095698 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Tue, 11 Mar 2014 14:24:59 +0100
Subject: [PATCH] atdec: Always try to pull one decoded frame out of the queue

... instead of doing magic calculations with the buffer duration.
---
 sys/applemedia/atdec.c | 6 +++---
 sys/applemedia/atdec.h | 1 +
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/sys/applemedia/atdec.c b/sys/applemedia/atdec.c
index fae15c9..f4d1f3d 100644
--- a/sys/applemedia/atdec.c
+++ b/sys/applemedia/atdec.c
@@ -300,6 +300,8 @@ gst_atdec_set_format (GstAudioDecoder * decoder, GstCaps * caps)
 
   /* configure input_format from caps */
   gst_caps_to_at_format (caps, &input_format);
+  /* Remember the number of samples per frame */
+  atdec->spf = input_format.mFramesPerPacket;
 
   /* negotiate output caps */
   output_caps = gst_pad_get_allowed_caps (GST_AUDIO_DECODER_SRC_PAD (atdec));
@@ -411,9 +413,7 @@ gst_atdec_handle_frame (GstAudioDecoder * decoder, GstBuffer * buffer)
     goto enqueue_buffer_failed;
 
   /* figure out how many frames we need to pull out of the queue */
-  out_frames = GST_CLOCK_TIME_TO_FRAMES (GST_BUFFER_DURATION (buffer),
-      audio_info->rate);
-  size = out_frames * audio_info->bpf;
+  size = atdec->spf * audio_info->bpf;
   AudioQueueAllocateBuffer (atdec->queue, size, &output_buffer);
   if (status)
     goto allocate_output_failed;
diff --git a/sys/applemedia/atdec.h b/sys/applemedia/atdec.h
index 5284906..9994554 100644
--- a/sys/applemedia/atdec.h
+++ b/sys/applemedia/atdec.h
@@ -38,6 +38,7 @@ struct _GstATDec
 {
   GstAudioDecoder decoder;
   AudioQueueRef queue;
+  gint spf;
 };
 
 struct _GstATDecClass
-- 
2.7.4