int raw2jpg(uint8_t* data, int width,int height )
{
    if(android_jpeg_encoder)
	return jpeg_encode(android_jpeg_encoder,75,width,height,data,width*4,&android_show_display.data);
    else
    {
	SPICE_DEBUG("no android_jpeg_encoder found!");
	return 0;
    }
}
int imencodeJPEG(const Mat& src, std::vector<uchar>& buff, int q, int DCT_MODE, bool isOpt)
{
	buff.clear();
	buff.resize(src.size().area()*src.channels());
	uchar* dst = &buff[0];
	int s = jpeg_encode(src.data, src.cols,src.rows,src.channels(),dst,q,DCT_MODE,isOpt);

	buff.resize(s);
	//buff.clear();
	return s;
}
int imencodeJPEG(const Mat& src, uchar* buff, int q, int DCT_MODE, bool isOpt)
{
	int s = jpeg_encode(src.data, src.cols,src.rows,src.channels(),buff,q,DCT_MODE,isOpt);
	return s;
}
示例#4
0
文件: jpegcapt_vaio.c 项目: emon/emon
int
capt_capt(opt_t *opt)
{
	int frame_size;
	unsigned int frame_num;
	unsigned char *frame_buf_yuv, *frame_buf_rgb, *jpeg_buf;
	struct timeval start;
	const int fps = opt->fps_opt;
	const int wait_flag = (opt->fps_opt < opt->fps_dev);
	const int w = opt->width, h = opt->height;
	int q = 75;		/* jpeg compress quality */
	int len;
	char mh[PIPE_HEADER_LEN]; /* EMON system Message Header */
	unsigned int ts;	/* timestamp in Message Header */

	frame_size = mchip_hsize() * mchip_vsize() * 3;
	frame_buf_yuv = (unsigned char*)malloc(frame_size);
	frame_buf_rgb = (unsigned char*)malloc(frame_size);
	jpeg_buf = (unsigned char*)malloc(frame_size);
		/* allocate enougth memory for jpeg_buf */
	if (frame_buf_yuv == NULL || frame_buf_rgb == NULL ||jpeg_buf == NULL){
		e_printf("cannot malloc for frame_buf or jpeg_buf\n");
		return -1;
	}

	stat_init(&STAT);
	ts = rand() * opt->freq;
	mchip_continuous_start();
	gettimeofday(&start, NULL);
	STAT.start = start;	/* copy struct timeval */

	d2_printf("\njpegcapt: %ld.%06ld: wait_flag=%d",
		  start.tv_sec, start.tv_usec, wait_flag);
	
	for (frame_num = 0; opt->max_frame == 0 || frame_num < opt->max_frame; frame_num++, ts += opt->freq){
		struct timeval c, b, a; /* capture, before(encoding), after */
		int d1, d2;

		if (debug_level > 0 && (frame_num % opt->stat_freq)== 0){
			stat_print(&STAT, frame_num);
		}

		if (wait_proper_time(&start, fps, frame_num, 1) < 0){
			STAT.skip_count++;
			continue; /* skip capture because it's too late */
		}
		STAT.capt_count++;
		gettimeofday(&c, NULL);
		mchip_continuous_read(frame_buf_yuv,
				      mchip_hsize()*mchip_vsize()*2);
		yuv_convert(frame_buf_yuv, frame_buf_rgb,
			    mchip_hsize(), mchip_vsize());
		gettimeofday(&b, NULL);
		len = jpeg_encode(frame_buf_rgb, jpeg_buf, w, h, q);
		gettimeofday(&a, NULL);
		d1 = timeval_diff_usec(&b, &c);
		d2 = timeval_diff_usec(&a, &b);
		timeval_add_usec(&STAT.capt_total, d1);
		timeval_add_usec(&STAT.jpgenc_total, d2);
		d3_printf("\n frame=%d, ts=%d, jpg_len=%d, q=%d"
			  ", t1=%d, t2=%d",
			  frame_num, ts, len, q, d1, d2);

		if (len > opt->dsize ){
			q *= 0.75;
			continue; /* skip this picture */
		}else if (len < opt->dsize * 0.9 && q < 90) {
			q++;
		}
		bzero(&mh, PIPE_HEADER_LEN);
		pipe_set_version(&mh, 1);
		pipe_set_marker(&mh, 1);
		pipe_set_length(&mh, len);
		pipe_set_timestamp(&mh, ts);
		if (pipe_blocked_write_block(STDOUT, &mh, jpeg_buf)
		    ==PIPE_ERROR){
			d1_printf("\npipe_blocked_write_block error!!"
				  "len=%d, ts=%ud", len, ts);
		} else {
			STAT.out_count++;
		}
	}
	if (debug_level > 0){
		stat_print(&STAT, frame_num);
	}
	return 0;
}