s5pv210 linux hdmi tv输出

男娘i 2022-08-06 10:23 207阅读 0赞

原来本来说是不公开源码的　现在发现也没什么价值了　以下公布的源码支持linux3.0 linux2.6内核　linux3.1内核v4l2构架发生了变化　同时支持hdmi输出与tv输出　使用的板子是　斯道icool210

源码是根据android里的libhdmi库进行整理的 这里是基于linux2.6.35内核测试成功

/*
     * hidmitest.c
     *
     * hclydao<hclydao@163.com>
     *
     * This program is free software; you can redistribute it and/or modify
     * it under the terms of the GNU General Public License version 2 as
     * published by the Free Software Foundation.
     */
    
    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    #include <assert.h>
    #include <getopt.h>  
    #include <fcntl.h>  
    #include <unistd.h>
    #include <errno.h>
    #include <sys/stat.h>
    #include <sys/types.h>
    #include <sys/time.h>
    #include <sys/mman.h>
    #include <sys/ioctl.h>
    #include <asm/types.h>
    #include <linux/videodev2.h>
    #include <linux/fb.h>
    #include "videodev2_samsung.h"
    
    #define HDMI_DEV	"/dev/video14"
    #define TVOUT_DEV0	"/dev/video22"
    #define FIMC_DEV	"/dev/video2"
    
    #define CLEAR(x) memset (&(x), 0, sizeof (x))
    #define ALIGN(x, a)    (((x) + (a) - 1) & ~((a) - 1))
    static int fd = -1;
    v4l2_std_id std_id = 0;
    static int m_width = 0;
    static int m_height = 0;
    #define LCD_DEV		"/dev/fb0"
    #define S3CFB_GET_LCD_ADDR              _IOR ('F', 311, int)
    
    unsigned int phyLCDAddr = 0;
    unsigned int physYAddr = 0;
    static int lcd_fd = -1;
    static int ov_fd = -1;
    static int fimc_fd = -1;
    unsigned int mFimcRrvedPhysMemAddr;
    unsigned int hwver;
    static int out_w = 0;
    static int out_h = 0;
    
    struct overlay_param {
    	struct v4l2_framebuffer 		overlay_frame;
    	struct v4l2_window_s5p_tvout 	overlay_rect;
    	struct v4l2_rect				overlay_dst;
    };
    
    typedef unsigned int dma_addr_t;
    struct fimc_buf {
    	dma_addr_t	base[3];
     	size_t		length[3];
    };
    
    int lcd_open()
    {
    	lcd_fd = open(LCD_DEV,O_RDWR, 0);
    	if(lcd_fd < 0) {
    		printf("++++++open tvout dev error\n");
    		return -1;
    	}
    	return lcd_fd;
    }
    
    int lcd_getaddr()
    {
    	struct fb_var_screeninfo info;
    	if (ioctl(lcd_fd, S3CFB_GET_LCD_ADDR, &phyLCDAddr) == -1) {
    		printf("%s:ioctl(S3CFB_GET_LCD_ADDR) fail\n", __func__);
    		return -1;
    	}
    	if(phyLCDAddr == 0) {
    		printf("%s::S3CFB_GET_LCD_ADDR fail \n", __func__);
    		return -1;
    	}
               
        if (ioctl(lcd_fd, FBIOGET_VSCREENINFO, &info) == -1) {
        	printf("%s:ioctl(FBIOGET_VSCREENINFO) fail\n", __func__);
            return -1;
        } 
        m_width   =  info.xres;
        m_height  =  info.yres;
    	return 0;
    }
    
    int hdmi_open()
    {
    	fd = open(HDMI_DEV, O_RDWR);
    	if(fd < 0) {
    		printf("++++++open tvout dev error\n");
    		return fd;
    	}
    	return fd;
    }
    
    int tvout_v4l2_querycap(void)
    {
        struct v4l2_capability cap;
        int ret;
    
        ret = ioctl(fd, VIDIOC_QUERYCAP, &cap);
    
        if (ret < 0) {
    	    printf("tvout_v4l2_querycap VIDIOC_QUERYCAP failed %d\n", errno);
    	    return ret;
        }
    
        //printf("tvout_v4l2_querycap DRIVER : %s, CARD : %s, CAP.: 0x%08x\n",
    		//    cap.driver, cap.card, cap.capabilities);
        return ret;
    }
    
    int tvout_v4l2_s_std(void)
    {
        int ret;
    
        ret = ioctl(fd, VIDIOC_S_STD, &std_id);
        if (ret < 0) {
    	    printf("tvout_v4l2_s_std" "VIDIOC_S_STD failed %d\n", errno);
    	    return ret;
        }
        return ret;
    }
    
    int tvout_v4l2_enum_output(struct v4l2_output *output)
    {
        int ret;
    
        ret = ioctl(fd, VIDIOC_ENUMOUTPUT, output);
    
        return ret;
    }
    
    int tvout_v4l2_s_output(int index)
    {
        int ret;
    
        ret = ioctl(fd, VIDIOC_S_OUTPUT, &index);
        if (ret < 0) {
    	    printf("tvout_v4l2_s_output" "VIDIOC_S_OUTPUT failed %d\n", errno);
    	    return ret;
        }
    
        return ret;
    }
    
    int overlay_open()
    {
    	ov_fd = open(TVOUT_DEV0, O_RDWR);
    	if(ov_fd < 0) {
    		printf("++++++open tv out 0 dev error\n");
    		return ov_fd;
    	}
    	return ov_fd;
    }
    
    int tvout_ov_s_parm(int fp, int buf_type, void *ptr)
    {
        struct v4l2_streamparm parm;
        struct v4l2_window_s5p_tvout *vparm = (struct v4l2_window_s5p_tvout*)ptr;
        int ret;
    
        parm.type = (enum v4l2_buf_type)buf_type;
        memcpy(parm.parm.raw_data, vparm, sizeof(struct v4l2_window_s5p_tvout));
    
        ret = ioctl(fp, VIDIOC_S_PARM, &parm);
        if (ret < 0) {
    	    printf("tvout_v4l2_s_parm" "VIDIOC_S_PARM failed %d\n", errno);
    	    return ret;
        }
    
        return 0;
    }
    
    int tvout_v4l2_s_fbuf(int fp, struct v4l2_framebuffer *frame)
    {
        int ret;
    
        ret = ioctl(fp, VIDIOC_S_FBUF, frame);
        if (ret < 0) {
    	    printf("tvout_v4l2_s_fbuf" "VIDIOC_STREAMON failed %d\n", errno);
    	    return ret;
        }
        return 0;
    }
    
    int tvout_v4l2_cropcap(int fp, struct v4l2_cropcap *a)
    {
        struct v4l2_cropcap *cropcap = a;
        int ret;
    
        ret = ioctl(fp, VIDIOC_CROPCAP, cropcap);
    
        if (ret < 0) {
            printf("tvout_v4l2_cropcap" "VIDIOC_CROPCAP failed %d\n", errno);
            return ret;
        }
    
        printf("tvout_v4l2_cropcap" "bound width : %d, bound height : %d,\n",
    		    cropcap->bounds.width, cropcap->bounds.height);
        return ret;
    }
    
    int tvout_ov_s_crop(int fp, unsigned int type, struct v4l2_rect *rect)
    {
        struct v4l2_crop crop;
        int ret;
    
        crop.type 	= (enum v4l2_buf_type)type;
    
        crop.c.left 	= rect->left;
        crop.c.top 	    = rect->top;
        crop.c.width 	= rect->width;
        crop.c.height 	= rect->height;
    
        ret = ioctl(fp, VIDIOC_S_CROP, &crop);
        if (ret < 0) {
    	    printf("tvout_v4l2_s_crop" "VIDIOC_S_CROP failed %d\n", errno);
    	    return ret;
        }
    
        return 0;
    }
    
    int tvout_v4l2_set_overlay(int fp)
    {
        struct overlay_param ov_param;
    	struct v4l2_cropcap cropcap;
    
    	int dst_w,dst_h;
    
    	dst_w = out_w;
    	dst_h = out_h;
    
        ov_param.overlay_frame.fmt.pixelformat = V4L2_PIX_FMT_RGB32;
        ov_param.overlay_frame.base            = (void *)mFimcRrvedPhysMemAddr;
    
        ov_param.overlay_rect.flags            = 0;
        ov_param.overlay_rect.priority         = 0x02;
        ov_param.overlay_rect.win.w.left       = 0;
        ov_param.overlay_rect.win.w.top        = 0;
        ov_param.overlay_rect.win.w.width      = dst_w;
        ov_param.overlay_rect.win.w.height     = dst_h;
        ov_param.overlay_rect.win.global_alpha = 0;
    
    	ov_param.overlay_dst.left   = 0;
        ov_param.overlay_dst.top    = 0;
    
        ov_param.overlay_dst.width  = dst_w;
        ov_param.overlay_dst.height = dst_h;
    
    	tvout_v4l2_s_fbuf(fp, &(ov_param.overlay_frame));
    	tvout_ov_s_parm(fp,V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY, &(ov_param.overlay_rect));
    
        cropcap.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY;
        tvout_v4l2_cropcap(fp, &cropcap);
    
        if(    ov_param.overlay_dst.width  <= cropcap.bounds.width
            && ov_param.overlay_dst.height <= cropcap.bounds.height)
        {
    	    tvout_ov_s_crop(fp, V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY,&(ov_param.overlay_dst));
        }
        else
        {
    	    printf("[%s] invalid crop size dst.w=%d dst.h=%d bounds.w=%d bounds.h=%d\n", __func__,
                    ov_param.overlay_dst.width,
                    ov_param.overlay_dst.height,
                    cropcap.bounds.width,
                    cropcap.bounds.height);
    	    return -1;
        }
    
    	return 0;
    }
    
    int tvout_v4l2_streamon(int fp, unsigned int type)
    {
        int ret;
    
        ret = ioctl(fp, VIDIOC_STREAMON, &type);
        if (ret < 0) {
    	    printf("tvout_v4l2_streamon" "VIDIOC_STREAMON failed %d\n", errno);
    	    return ret;
        }
    
        return 0;
    }
    
    int tvout_v4l2_start_overlay(int fp)
    {
        int ret, start = 1;
    
        ret = ioctl(fp, VIDIOC_OVERLAY, &start);
        if (ret < 0) {
    	    printf("tvout_v4l2_start_overlay" "VIDIOC_OVERLAY failed\n");
    	    return ret;
        }
    
        return ret;
    }
    
    int fimc_open()
    {
    	fimc_fd = open(FIMC_DEV, O_RDWR);
    	if(fimc_fd < 0) {
    		printf("++++++open tvout dev error\n");
    		return -1;
    	}
    	return fimc_fd;
    }
    
    int fimc_querycap(int fp)
    {
        struct v4l2_capability cap;
        int ret;
    
        ret = ioctl(fp, VIDIOC_QUERYCAP, &cap);
    
        if (ret < 0) {
    	    printf("%s VIDIOC_QUERYCAP failed %d\n",__func__, errno);
    	    return ret;
        }
    
        if (!(cap.capabilities & V4L2_CAP_STREAMING)) {
            printf("%s::%s has no streaming support\n", __func__, FIMC_DEV);
            return -1;
        }
    
        if (!(cap.capabilities & V4L2_CAP_VIDEO_OUTPUT)) {
            printf("%s::%s is no video output\n", __func__, FIMC_DEV);
            return -1;
        }
        return ret;
    }
    
    int fimc_gfmt(int fp)
    {
    	struct v4l2_format fmt;
    	int ret;
        fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
        ret = ioctl(fp, VIDIOC_G_FMT, &fmt);
        if (ret < 0) {
            printf("%s:: Error in video VIDIOC_G_FMT\n", __func__);
            return -1;
        }
    	return ret;
    }
    
    int fimc_gctrl(int fp)
    {
    	struct v4l2_control vc;
    	int ret;
        vc.id = V4L2_CID_RESERVED_MEM_BASE_ADDR;
        vc.value = 0;
    
        ret = ioctl(fp, VIDIOC_G_CTRL, &vc);
        if (ret < 0) {
            printf("Error in video VIDIOC_G_CTRL - V4L2_CID_RESERVED_MEM_BAES_ADDR (%d)\n", ret);
            return -1;
        }
    	mFimcRrvedPhysMemAddr = (unsigned int)vc.value;
    
        vc.id = V4L2_CID_FIMC_VERSION;
        vc.value = 0;
        ret = ioctl(fp, VIDIOC_G_CTRL, &vc);
        if (ret < 0) {
            printf("Error in video VIDIOC_G_CTRL - V4L2_CID_FIMC_VERSION (%d), FIMC version is set with default\n", ret);
            vc.value = 0x43;
    		return -1;
        }
    	hwver = vc.value;
    	return ret;
    }
    
    int fimc_sctrl(int fp)
    {
    	struct v4l2_control vc;
    	int ret;
        vc.id = V4L2_CID_OVLY_MODE;
        vc.value = 0x3;
        ret = ioctl(fp, VIDIOC_S_CTRL, &vc);
        if (ret < 0) {
            printf("Error in video VIDIOC_S_CTRL - V4L2_CID_OVLY_MODE (%d)\n",ret);
            return -1;
        }
    	return ret;
    }
    
    int fimc_v4l2_set_src(int fd, unsigned int hw_ver)
    {
    	struct v4l2_format		fmt;
    	struct v4l2_crop		crop;
    	int				ret_val;
    
    	fmt.type                = V4L2_BUF_TYPE_VIDEO_OUTPUT;
    	fmt.fmt.pix.width       = m_width;
    	fmt.fmt.pix.height      = m_height;
    	fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB32;
    	fmt.fmt.pix.field       = V4L2_FIELD_NONE;
    
    	ret_val = ioctl (fd, VIDIOC_S_FMT, &fmt);
    	if (ret_val < 0) {
    		printf("VIDIOC_S_FMT failed : ret=%d\n", ret_val);
    		return -1;
    	}
    
    	crop.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
    
    	if(hw_ver == 0x50) {
    		crop.c.left = 0;
    		crop.c.top = 0;
    	} else {
    		crop.c.left   = 0;
    		crop.c.top    = 0;
    	}
    
    	crop.c.width  = m_width;
    	crop.c.height = m_height;
    
    	ret_val = ioctl(fd, VIDIOC_S_CROP, &crop);
    	if (ret_val < 0) {
    		printf("Error in video VIDIOC_S_CROP (%d)\n",ret_val);
    		return -1;
    	}
    
    	return ret_val;
    }
    
    int fimc_v4l2_req_buf(int fd, int num_bufs, int cacheable_buffers)
    {
        struct v4l2_requestbuffers reqbuf;
        int ret;
        reqbuf.type   = V4L2_BUF_TYPE_VIDEO_OUTPUT;
        reqbuf.memory = V4L2_MEMORY_USERPTR;
        reqbuf.count  = num_bufs;
    
        ret = ioctl(fd, VIDIOC_REQBUFS, &reqbuf);
        if (ret < 0) {
            printf("+++++reqbuf ioctl error");
            return ret;
        }
    
        if (reqbuf.count > num_bufs) {
            printf("++Not enough buffer structs passed to get_buffers");
            return -ENOMEM;
        }
        return 0;
    }
    
    int fimc_v4l2_set_dst(int fd,int rotation, unsigned int addr)
    {
    	struct v4l2_format      sFormat;
    	struct v4l2_control     vc;
    	struct v4l2_framebuffer fbuf;
    	int                     ret_val;
    
    	/*
    	 * set rotation configuration
    	 */
    
    	vc.id = V4L2_CID_ROTATION;
    	vc.value = rotation;
    
    	ret_val = ioctl(fd, VIDIOC_S_CTRL, &vc);
    	if (ret_val < 0) {
    		printf("Error in video VIDIOC_S_CTRL - rotation (%d)\n",ret_val);
    		return -1;
    	}
    
    	/*
    	 * set size, format & address for destination image (DMA-OUTPUT)
    	 */
    	ret_val = ioctl(fd, VIDIOC_G_FBUF, &fbuf);
    	if (ret_val < 0) {
    		printf("Error in video VIDIOC_G_FBUF (%d)\n", ret_val);
    		return -1;
    	}
    
    	fbuf.base 			= (void *)addr;
    	fbuf.fmt.width 			= out_w;
    	fbuf.fmt.height 		= out_h;
    	fbuf.fmt.pixelformat 		= V4L2_PIX_FMT_RGB32;
    
    	ret_val = ioctl (fd, VIDIOC_S_FBUF, &fbuf);
    	if (ret_val < 0) {
    		printf("Error in video VIDIOC_S_FBUF (%d)\n",ret_val);
    		return -1;
    	}
    
    	/*
    	 * set destination window
    	 */
    
    	sFormat.type 			= V4L2_BUF_TYPE_VIDEO_OVERLAY;
    	sFormat.fmt.win.w.left 		= 0;
    	sFormat.fmt.win.w.top 		= 0;
    	sFormat.fmt.win.w.width 	= out_w;
    	sFormat.fmt.win.w.height 	= out_h;
    
    	ret_val = ioctl(fd, VIDIOC_S_FMT, &sFormat);
    	if (ret_val < 0) {
    		printf("Error in video VIDIOC_S_FMT (%d)\n",ret_val);
    		return -1;
    	}
    
    	return 0;
    }
    
    int fimc_v4l2_queue(int fd, struct fimc_buf *fimc_buf, int index)
    {
    	struct v4l2_buffer	buf;
    	int			ret_val;
    
    	buf.type	= V4L2_BUF_TYPE_VIDEO_OUTPUT;
    	buf.memory	= V4L2_MEMORY_USERPTR;
    	buf.m.userptr	= (unsigned long)fimc_buf;
    	buf.length	= 0;
    	buf.index	= index;
    
    	ret_val = ioctl (fd, VIDIOC_QBUF, &buf);
    	if (ret_val < 0) {
    		printf("Error in VIDIOC_QBUF : (%d) \n", ret_val);
    		return -1;
    	}
    
    	return 0;
    }
    
    int fimc_v4l2_stream_on(int fd, enum v4l2_buf_type type)
    {
    	if (ioctl (fd, VIDIOC_STREAMON, &type) < 0) {
    		printf("Error in VIDIOC_STREAMON\n");
    		return -1;
    	}
    
    	return 0;
    }
    
    int fimc_v4l2_dequeue(int fd)
    {
    	struct v4l2_buffer	buf;
    
    	buf.type        = V4L2_BUF_TYPE_VIDEO_OUTPUT;
    	buf.memory      = V4L2_MEMORY_USERPTR;
    
    	if (ioctl (fd, VIDIOC_DQBUF, &buf) < 0) {
    		printf("Error in VIDIOC_DQBUF\n");
    		return -1;
    	}
    
    	return buf.index;
    }
    
    int main(int argc, char *argv[])
    {
    	struct v4l2_output output;
    	unsigned int i=0,ret=0,index;
    	struct fimc_buf fimc_sbuf;
    	unsigned int mode  = 0;
    	unsigned int hdmi_mode = 0;
    	unsigned int  y_size = 0;
    	if(argc != 2) {
    		printf("usage %s mode\n",argv[0]);
    		printf("mode is 1080,720,480,tv\n");
    		printf("example %s 1080\n",argv[0]);
    		return 0;
    	}
    
    	mode = strtol(argv[1],NULL,10);
    
    	switch(mode) {
    		case 1080:
    			std_id = V4L2_STD_1080P_60;
    			hdmi_mode = V4L2_OUTPUT_TYPE_DIGITAL;
    			out_w = 1920;
    			out_h = 1080;
    			break;
    		case 720:
    			std_id = V4L2_STD_720P_60;
    			hdmi_mode = V4L2_OUTPUT_TYPE_DIGITAL;
    			out_w = 1280;
    			out_h = 720;
    			break;
    		case 480:
    			std_id = V4L2_STD_480P_60_16_9;
    			hdmi_mode = V4L2_OUTPUT_TYPE_DIGITAL;
    			out_w = 720;
    			out_h = 480;
    			break;
    		default:
    			std_id = V4L2_STD_PAL_BDGHI;
    			hdmi_mode = V4L2_OUTPUT_TYPE_COMPOSITE;
    			out_w = 720;
    			out_h = 576;
    			break;
    	}
    	y_size =  ALIGN(ALIGN(out_w,128) * ALIGN(out_h, 32), 8*1024);
    	lcd_open();
    	lcd_getaddr();
    	physYAddr = phyLCDAddr;
    
    	hdmi_open();
    
    	tvout_v4l2_querycap();
    	tvout_v4l2_s_std();
        do
        {
    	    output.index = i;
    	    ret = tvout_v4l2_enum_output(&output);
    	    if(output.type == hdmi_mode)
    			break;
    	    i++;
    
        }while(ret >=0);
    	tvout_v4l2_s_output(output.index);
    
    	fimc_open();
    	fimc_querycap(fimc_fd);
    	fimc_gfmt(fimc_fd);
    	fimc_gctrl(fimc_fd);
    	fimc_sctrl(fimc_fd);
    	fimc_v4l2_set_src(fimc_fd,hwver);
    	fimc_v4l2_set_dst(fimc_fd,0,mFimcRrvedPhysMemAddr);
    	fimc_v4l2_req_buf(fimc_fd,1,0);
    
    	fimc_v4l2_stream_on(fimc_fd,V4L2_BUF_TYPE_VIDEO_OUTPUT);
    	fimc_sbuf.base[0] = phyLCDAddr;
    	fimc_sbuf.base[1] = phyLCDAddr + y_size;
    	fimc_sbuf.base[2] = 0;
    	fimc_v4l2_queue(fimc_fd,&fimc_sbuf,0);
    	overlay_open();
    	tvout_v4l2_set_overlay(ov_fd);
    	tvout_v4l2_start_overlay(ov_fd);
    
    	while(1) {
    			index = fimc_v4l2_dequeue(fimc_fd);
    		    fimc_sbuf.base[0] = phyLCDAddr;
        		fimc_sbuf.base[1] = phyLCDAddr + y_size;
        		fimc_sbuf.base[2] = 0;
    			fimc_v4l2_queue(fimc_fd,&fimc_sbuf,0);
    	}
    
    	return 1;
    }

编译生成二进制后　执行

hdmitest 480是输出480p

hdmitest 720输出720p

hdmitest 1080输出1080p

hdmitest tv是tv输出　这是默认就是tv输出

时间过的比较久了具体原理也没有完全整明白 大致原理就是获取fb数据后通过fimc转换然后进行overlay(希望没有说错)

整个源码下载地址:[http://download.csdn.net/detail/hclydao/8360065][http_download.csdn.net_detail_hclydao_8360065]

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