C++ (Cpp) chrome_convert Examples

Example #1

File: test_libjpeg-ex.c Project: buaaqbh/libraries

void get_chroma_buffer(void *output, struct yuv *yuv)
{
#if 0
    int width = 0;
    int height = 0;
    int pitch = 0;
    struct yuv_neon_arg yuv_neon;
    if (yuv->format == YUV_FORMAT_YUV420) {
      width = yuv->width / 2;
      height = yuv->height / 2;
      pitch = yuv->pitch / 2;
      yuv_neon.in = yuv->uv_addr_offset;
      yuv_neon.row = height;
      yuv_neon.col = yuv->width;
      yuv_neon.pitch = yuv->pitch;
      if (yuv->sub_format == YUV420_YV12) {
        // YV12 format (YYYYYYYYVVUU)
        yuv_neon.u = output + width * height;
        yuv_neon.v = output;
        chrome_convert(&yuv_neon);
      } else if (yuv->sub_format == YUV420_IYUV) {
        // IYUV (I420) format (YYYYYYYYUUVV)
        yuv_neon.u = output;
        yuv_neon.v = output + width * height;
        chrome_convert(&yuv_neon);
      } else {
        if (yuv->sub_format != YUV420_NV12) {
          INFO("Change output format back to NV12 for encode!\n");
          yuv->sub_format = YUV420_NV12;
        }
        // NV12 format (YYYYYYYYUVUV)
        input = yuv->uv_addr_offset;
        for (i = 0; i < height; ++i) {
          memcpy(output + i * width * 2, input + i * pitch * 2, width * 2);
        }
      }
    } else if (yuv->format == YUV422) {
      width = yuv->width / 2;
      height = yuv->height;
      pitch = yuv->pitch / 2;
      yuv_neon.in = yuv->uv_addr_offset;
      yuv_neon.row = height;
      yuv_neon.col = yuv->width;
      yuv_neon.pitch = yuv->pitch;
      if (yuv->sub_format == YUV422_YU16) {
        yuv_neon.u = output;
        yuv_neon.v = output + width * height;
      } else {
        if (yuv->sub_format != YUV422_YV16) {
          printf("Change output format back to YV16 for preview!\n");
          yuv->sub_format = YUV422_YV16;
        }
        yuv_neon.u = output + width * height;
        yuv_neon.v = output;
      }
      chrome_convert(&yuv_neon);
    } else {
      printf("Error: Unsupported YUV input format!\n");
    }
#endif
}

Example #2

File: jpg_enc.c Project: ShawnOfMisfit/ambarella

static int init_image_mem(char *file_input, int width, int height)
{
	int fd_input = -1;
	int size_input = 0;
	int u_offset = 0;
	int size_u = 0,size_v = 0;
	int read_input = 0;
	u8 *image_chrome = NULL;
	struct timeval time1, time2;
	yuv_neon_arg yuv_arg;
	if ((filename_yuv[0] == '\0') || (width <= 0) ||(height <= 0) ) {
		printf("Please set right yuv file, width, height\n");
		return -1;
	}

	size_input = width * height * 3/2;
	u_offset = width * height;
	size_u = width * height / 4;
	size_v = size_u;
	if ((fd_input = open(file_input, O_RDONLY )) < 0) {
		printf("Failed to open file [%s].\n", file_input);
		return -1;
	}

	do {
		image_data.buffer = (u8*) malloc(size_input);
		if (!image_data.buffer) {
			printf("Not enough memory for image buffer.\n");
			break;
		}
		memset(image_data.buffer, 0, size_input);
		read_input = read(fd_input, image_data.buffer, size_input);
		if (read_input != size_input) {
			printf("Read %s error\n", file_input);
			read_input = -1;
		}
		if (image_data.format == NV12) {
			image_chrome = (u8*)malloc(size_u + size_v);
			if (image_chrome == NULL) {
				printf("Not enough memory for image_u or image_v.\n");
				return -1;;
			}
			if (verbose) {
				gettimeofday(&time1, NULL);
			}
			yuv_arg.in = image_data.buffer + u_offset;
			yuv_arg.u = image_chrome;
			yuv_arg.v = image_chrome + size_u;
			yuv_arg.row = height / 2;
			yuv_arg.col = width;
			yuv_arg.pitch = width;
			chrome_convert(&yuv_arg);
			memcpy(image_data.buffer + u_offset, yuv_arg.u, size_u + size_v);
			if (verbose) {
				gettimeofday(&time2, NULL);
				printf("NV12 to IYUV takes time %ld ms\n",(time2.tv_usec - time1.tv_usec)/1000L +(time2.tv_sec - time1.tv_sec) * 1000L);
			}
		}

	} while(0);
	if (image_chrome != NULL) {
		free(image_chrome);
		image_chrome = NULL;
	}
	close(fd_input);
	fd_input = -1;
	return read_input;
}