From a3ec0cf49e00d018236821bafd430fbffc036eec Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Mon, 2 Mar 2020 17:27:00 +0100
Subject: [PATCH] examples: improve some debug

---
 src/examples/audio-src.c       | 4 +++-
 src/examples/video-dsp-play.c  | 5 +++--
 src/examples/video-play.c      | 5 +++--
 src/examples/video-src-alloc.c | 2 +-
 src/examples/video-src.c       | 2 +-
 5 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/src/examples/audio-src.c b/src/examples/audio-src.c
index 5753ee6f5..95ee54fa9 100644
--- a/src/examples/audio-src.c
+++ b/src/examples/audio-src.c
@@ -79,8 +79,10 @@ static void on_process(void *userdata)
 	int n_frames, stride;
 	uint8_t *p;
 
-	if ((b = pw_stream_dequeue_buffer(data->stream)) == NULL)
+	if ((b = pw_stream_dequeue_buffer(data->stream)) == NULL) {
+		pw_log_warn("out of buffers: %m");
 		return;
+	}
 
 	buf = b->buffer;
 	if ((p = buf->datas[0].data) == NULL)
diff --git a/src/examples/video-dsp-play.c b/src/examples/video-dsp-play.c
index 585af7d83..42c19064f 100644
--- a/src/examples/video-dsp-play.c
+++ b/src/examples/video-dsp-play.c
@@ -100,9 +100,10 @@ on_process(void *_data, struct spa_io_position *position)
 	uint32_t i, j;
 	uint8_t *src, *dst;
 
-	b = pw_filter_dequeue_buffer(data->in_port);
-	if (b == NULL)
+	if ((b = pw_filter_dequeue_buffer(data->in_port)) == NULL) {
+		pw_log_warn("out of buffers: %m");
 		return;
+	}
 
 	buf = b->buffer;
 
diff --git a/src/examples/video-play.c b/src/examples/video-play.c
index 8747195a5..46ef446f5 100644
--- a/src/examples/video-play.c
+++ b/src/examples/video-play.c
@@ -104,9 +104,10 @@ on_process(void *_data)
 	uint8_t *src, *dst;
 	bool render_cursor = false;
 
-	b = pw_stream_dequeue_buffer(stream);
-	if (b == NULL)
+	if ((b = pw_stream_dequeue_buffer(stream)) == NULL) {
+		pw_log_warn("out of buffers: %m");
 		return;
+	}
 
 	buf = b->buffer;
 
diff --git a/src/examples/video-src-alloc.c b/src/examples/video-src-alloc.c
index c82265bf6..68332fe82 100644
--- a/src/examples/video-src-alloc.c
+++ b/src/examples/video-src-alloc.c
@@ -96,7 +96,7 @@ static void on_timeout(void *userdata, uint64_t expirations)
 	pw_log_trace("timeout");
 
 	if ((b = pw_stream_dequeue_buffer(data->stream)) == NULL) {
-		pw_log_warn("out of buffers");
+		pw_log_warn("out of buffers: %m");
 		return;
 	}
 
diff --git a/src/examples/video-src.c b/src/examples/video-src.c
index 2fe056f65..2fe7c4e5b 100644
--- a/src/examples/video-src.c
+++ b/src/examples/video-src.c
@@ -95,7 +95,7 @@ static void on_timeout(void *userdata, uint64_t expirations)
 	pw_log_trace("timeout");
 
 	if ((b = pw_stream_dequeue_buffer(data->stream)) == NULL) {
-		pw_log_warn("out of buffers");
+		pw_log_warn("out of buffers: %m");
 		return;
 	}