path: root/hwc2/common/utils/AmVideo.cpp (plain)
blob: 15db0c96b1f6dd28eaeeb5e02b96dcfa36e94759

1	/*
2	// Copyright (c) 2017 Amlogic
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	*/
17
18	#define LOG_TAG "AmVideo"
19	//#define LOG_NDEBUG 0
20	#include <cutils/log.h>
21
22	#include <AmVideo.h>
23	#include <fcntl.h>
24	#include <sys/ioctl.h>
25	#include <errno.h>
26
27	//#define AMVIDEO_DEBUG
28
29	using namespace android;
30
31	#define AM_VIDEO_DEV "/dev/amvideo"
32
33	#define AMSTREAM_IOC_MAGIC 'S'
34	#define AMSTREAM_IOC_GLOBAL_GET_VIDEO_OUTPUT _IOR(AMSTREAM_IOC_MAGIC, 0x21, int)
35	#define AMSTREAM_IOC_GLOBAL_SET_VIDEO_OUTPUT _IOW(AMSTREAM_IOC_MAGIC, 0x22, int)
36
37	AmVideo* AmVideo::mInstance = NULL;
38	Mutex AmVideo::mLock;
39
40	AmVideo::AmVideo() {
41	mDevFd = open(AM_VIDEO_DEV, O_RDWR | O_NONBLOCK);
42	if (mDevFd < 0) {
43	ALOGE("Open %s Failed. ", AM_VIDEO_DEV);
44	}
45
46	if (getVideoPresent(mVideoPresent) != 0) {
47	ALOGE("Get video mute failed.");
48	mVideoPresent = true;
49	}
50	}
51
52	AmVideo::~AmVideo() {
53	if (mDevFd >= 0) {
54	close(mDevFd);
55	mDevFd = -1;
56	}
57	}
58
59	AmVideo* AmVideo::getInstance() {
60	if (mInstance == NULL) {
61	Mutex::Autolock _l(mLock);
62	if (mInstance == NULL) {
63	mInstance = new AmVideo();
64	}
65	}
66
67	return mInstance;
68	}
69
70	int AmVideo::presentVideo(bool bPresent) {
71	if (mDevFd < 0)
72	return -EBADF;
73
74	if (mVideoPresent != bPresent) {
75	ALOGD("muteVideo to %d", bPresent);
76	uint32_t val = bPresent ? 1 : 0;
77	if (ioctl(mDevFd, AMSTREAM_IOC_GLOBAL_SET_VIDEO_OUTPUT, val) != 0) {
78	ALOGE("AMSTREAM_SET_VIDEO_OUTPUT ioctl (%d) return(%d)", bPresent, errno);
79	return -EINVAL;
80	}
81	mVideoPresent = bPresent;
82	} else {
83	#ifdef AMVIDEO_DEBUG
84	bool val = true;
85	getVideoPresent(val);
86	if (mVideoPresent != val) {
87	ALOGE("presentVideo (%d) vs (%d)", mVideoPresent, val);
88	}
89	ALOGD("Already set video to (%d)", bPresent);
90	#endif
91	}
92
93	return 0;
94	}
95
96	int AmVideo::getVideoPresent(bool& output) {
97	if (mDevFd < 0)
98	return -EBADF;
99
100	uint32_t val = 1;
101	if (ioctl(mDevFd, AMSTREAM_IOC_GLOBAL_GET_VIDEO_OUTPUT, &val) != 0) {
102	ALOGE("AMSTREAM_GET_VIDEO_OUTPUT ioctl fail(%d)", errno);
103	return -EINVAL;
104	}
105
106	output = (val ==0) ? false : true;
107	return 0;
108	}
109
110