path: root/v4l2_vdin.h (plain)
blob: 0db756ea3212b07fabb051207e3fc3a3b956c3b5

1	/*
2	* Copyright (C) 2013 The Android Open Source Project
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16	#include <signal.h>
17	#include <stdio.h>
18	#include <stdlib.h>
19	#include <string.h>
20	#include <fcntl.h>
21	#include <unistd.h>
22	#include <errno.h>
23	#include <sys/ioctl.h>
24	#include <sys/mman.h>
25	#include <sys/select.h>
26	#include <linux/videodev2.h>
27	#include <sys/time.h>
28
29	#include <utils/KeyedVector.h>
30	#include <cutils/properties.h>
31	#include <sys/types.h>
32	#include <sys/stat.h>
33	#include <utils/threads.h>
34	#include <android/native_window.h>
35	#include <gralloc_priv.h>
36
37	#include <hardware/aml_screen.h>
38
39	namespace android {
40
41	#define NB_BUFFER 6
42
43	struct VideoInfo {
44	struct v4l2_capability cap;
45	struct v4l2_format format;
46	struct v4l2_buffer buf;
47	struct v4l2_requestbuffers rb;
48	void *mem[NB_BUFFER];
49	unsigned canvas[NB_BUFFER];
50	unsigned refcount[NB_BUFFER];
51	bool isStreaming;
52	int width;
53	int height;
54	int formatIn;
55	int framesizeIn;
56	};
57	enum State{
58	START,
59	PAUSE,
60	STOPING,
61	STOP,
62	};
63
64	enum FrameType{
65	NATIVE_WINDOW_DATA = 0x1,
66	CALL_BACK_DATA = 0x2,
67	};
68
69	typedef void (*olStateCB)(int state);
70
71	typedef void (*app_data_callback)(void *user, aml_screen_buffer_info_t *buff_info);
72
73	#define SCREENSOURCE_GRALLOC_USAGE GRALLOC_USAGE_HW_TEXTURE | \
74	GRALLOC_USAGE_HW_RENDER | \
75	GRALLOC_USAGE_SW_READ_RARELY | \
76	GRALLOC_USAGE_SW_WRITE_NEVER
77
78	class vdin_screen_source {
79	public:
80	vdin_screen_source();
81	~vdin_screen_source();
82	int init();
83	int start();
84	int stop();
85	int pause();
86	int get_format();
87	int set_format(int width = 640, int height = 480, int color_format = V4L2_PIX_FMT_NV21);
88	int set_rotation(int degree);
89	int set_crop(int x, int y, int width, int height);
90	int aquire_buffer(aml_screen_buffer_info_t *buff_info);
91	// int inc_buffer_refcount(int* ptr);
92	int release_buffer(void* ptr);
93	int set_state_callback(olStateCB callback);
94	int set_data_callback(app_data_callback callback, void* user);
95	int set_preview_window(ANativeWindow* window);
96	int set_frame_rate(int frameRate);
97	int set_source_type(int sourceType);
98	int get_source_type();
99	private:
100	int init_native_window();
101	int start_v4l2_device();
102	int workThread();
103	private:
104	class WorkThread : public Thread {
105	vdin_screen_source* mSource;
106	public:
107	WorkThread(vdin_screen_source* source) :
108	Thread(false), mSource(source) { }
109	virtual void onFirstRef() {
110	run("vdin screen source work thread", PRIORITY_URGENT_DISPLAY);
111	}
112	virtual bool threadLoop() {
113	mSource->workThread();
114	// loop until we need to quit
115	return true;
116	}
117	};
118	private:
119	int mCurrentIndex;
120	KeyedVector<void *, int> mBufs;
121	int mBufferCount;
122	int mFrameWidth;
123	int mFrameHeight;
124	int mBufferSize;
125	volatile int mState;
126	olStateCB mSetStateCB;
127	int mPixelFormat;
128	int mNativeWindowPixelFormat;
129	sp<ANativeWindow> mANativeWindow;
130	sp<WorkThread> mWorkThread;
131	mutable Mutex mLock;
132	int mCameraHandle;
133	struct VideoInfo *mVideoInfo;
134	int mFrameType;
135	app_data_callback mDataCB;
136	bool mOpen;
137	void *mUser;
138	};
139
140	}
141