From 1edb19130f3025498e387e385e6692546d1287eb Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Tue, 26 Apr 2016 13:02:56 +0300
Subject: kmscapture: separate step to enable streaming

---
 tests/kmscapture.cpp | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/tests/kmscapture.cpp b/tests/kmscapture.cpp
index 965d32e..ff62678 100644
--- a/tests/kmscapture.cpp
+++ b/tests/kmscapture.cpp
@@ -37,6 +37,7 @@ public:
 
 	void show_next_frame(AtomicReq &req);
 	int fd() const { return m_fd; }
+	void start_streaming();
 private:
 	ExtFramebuffer* GetExtFrameBuffer(Card& card, uint32_t i, PixelFormat pixfmt);
 	int m_fd;	/* camera file descriptor */
@@ -186,11 +187,6 @@ CameraPipeline::CameraPipeline(int cam_fd, Card& card, Crtc *crtc, Plane* plane,
 			m_fb.push_back(fb);
 	}
 
-	enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-	r = ioctl(m_fd, VIDIOC_STREAMON, &type);
-	ASSERT(r == 0);
-
 	m_plane = plane;
 
 	// Do initial plane setup with first fb, so that we only need to
@@ -220,7 +216,6 @@ CameraPipeline::CameraPipeline(int cam_fd, Card& card, Crtc *crtc, Plane* plane,
 	FAIL_IF(r, "initial plane setup failed");
 }
 
-
 CameraPipeline::~CameraPipeline()
 {
 	for (unsigned i = 0; i < m_fb.size(); i++)
@@ -232,6 +227,14 @@ CameraPipeline::~CameraPipeline()
 	::close(m_fd);
 }
 
+void CameraPipeline::start_streaming()
+{
+	enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+	int r = ioctl(m_fd, VIDIOC_STREAMON, &type);
+	FAIL_IF(r, "Failed to enable camera stream: %d", r);
+}
+
 void CameraPipeline::show_next_frame(AtomicReq& req)
 {
 	int r;
@@ -402,6 +405,9 @@ int main(int argc, char** argv)
 	fds[nr_cameras].fd = 0;
 	fds[nr_cameras].events =  POLLIN;
 
+	for (auto cam : cameras)
+		cam->start_streaming();
+
 	while (true) {
 		int r = poll(fds.data(), nr_cameras + 1, -1);
 		ASSERT(r > 0);
-- 
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