213 lines
7.4 KiB
C++
213 lines
7.4 KiB
C++
/**************************************************************************/
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/* buffer_decoder.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "buffer_decoder.h"
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#include "servers/camera/camera_feed.h"
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#include <linux/videodev2.h>
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BufferDecoder::BufferDecoder(CameraFeed *p_camera_feed) {
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camera_feed = p_camera_feed;
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width = camera_feed->get_format().width;
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height = camera_feed->get_format().height;
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image.instantiate();
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}
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AbstractYuyvBufferDecoder::AbstractYuyvBufferDecoder(CameraFeed *p_camera_feed) :
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BufferDecoder(p_camera_feed) {
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switch (camera_feed->get_format().pixel_format) {
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case V4L2_PIX_FMT_YYUV:
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component_indexes = new int[4]{ 0, 1, 2, 3 };
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break;
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case V4L2_PIX_FMT_YVYU:
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component_indexes = new int[4]{ 0, 2, 3, 1 };
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break;
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case V4L2_PIX_FMT_UYVY:
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component_indexes = new int[4]{ 1, 3, 0, 2 };
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break;
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case V4L2_PIX_FMT_VYUY:
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component_indexes = new int[4]{ 1, 3, 2, 0 };
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break;
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default:
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component_indexes = new int[4]{ 0, 2, 1, 3 };
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}
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}
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AbstractYuyvBufferDecoder::~AbstractYuyvBufferDecoder() {
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delete[] component_indexes;
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}
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SeparateYuyvBufferDecoder::SeparateYuyvBufferDecoder(CameraFeed *p_camera_feed) :
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AbstractYuyvBufferDecoder(p_camera_feed) {
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y_image_data.resize(width * height);
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cbcr_image_data.resize(width * height);
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y_image.instantiate();
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cbcr_image.instantiate();
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}
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void SeparateYuyvBufferDecoder::decode(StreamingBuffer p_buffer) {
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uint8_t *y_dst = (uint8_t *)y_image_data.ptrw();
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uint8_t *uv_dst = (uint8_t *)cbcr_image_data.ptrw();
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uint8_t *src = (uint8_t *)p_buffer.start;
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uint8_t *y0_src = src + component_indexes[0];
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uint8_t *y1_src = src + component_indexes[1];
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uint8_t *u_src = src + component_indexes[2];
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uint8_t *v_src = src + component_indexes[3];
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for (int i = 0; i < width * height; i += 2) {
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*y_dst++ = *y0_src;
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*y_dst++ = *y1_src;
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*uv_dst++ = *u_src;
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*uv_dst++ = *v_src;
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y0_src += 4;
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y1_src += 4;
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u_src += 4;
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v_src += 4;
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}
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if (y_image.is_valid()) {
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y_image->set_data(width, height, false, Image::FORMAT_L8, y_image_data);
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} else {
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y_image.instantiate(width, height, false, Image::FORMAT_RGB8, y_image_data);
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}
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if (cbcr_image.is_valid()) {
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cbcr_image->set_data(width, height, false, Image::FORMAT_L8, cbcr_image_data);
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} else {
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cbcr_image.instantiate(width, height, false, Image::FORMAT_RGB8, cbcr_image_data);
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}
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camera_feed->set_YCbCr_imgs(y_image, cbcr_image);
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}
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YuyvToGrayscaleBufferDecoder::YuyvToGrayscaleBufferDecoder(CameraFeed *p_camera_feed) :
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AbstractYuyvBufferDecoder(p_camera_feed) {
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image_data.resize(width * height);
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}
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void YuyvToGrayscaleBufferDecoder::decode(StreamingBuffer p_buffer) {
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uint8_t *dst = (uint8_t *)image_data.ptrw();
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uint8_t *src = (uint8_t *)p_buffer.start;
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uint8_t *y0_src = src + component_indexes[0];
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uint8_t *y1_src = src + component_indexes[1];
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for (int i = 0; i < width * height; i += 2) {
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*dst++ = *y0_src;
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*dst++ = *y1_src;
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y0_src += 4;
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y1_src += 4;
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}
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if (image.is_valid()) {
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image->set_data(width, height, false, Image::FORMAT_L8, image_data);
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} else {
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image.instantiate(width, height, false, Image::FORMAT_RGB8, image_data);
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}
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camera_feed->set_RGB_img(image);
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}
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YuyvToRgbBufferDecoder::YuyvToRgbBufferDecoder(CameraFeed *p_camera_feed) :
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AbstractYuyvBufferDecoder(p_camera_feed) {
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image_data.resize(width * height * 3);
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}
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void YuyvToRgbBufferDecoder::decode(StreamingBuffer p_buffer) {
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uint8_t *src = (uint8_t *)p_buffer.start;
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uint8_t *y0_src = src + component_indexes[0];
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uint8_t *y1_src = src + component_indexes[1];
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uint8_t *u_src = src + component_indexes[2];
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uint8_t *v_src = src + component_indexes[3];
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uint8_t *dst = (uint8_t *)image_data.ptrw();
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for (int i = 0; i < width * height; i += 2) {
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int u = *u_src;
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int v = *v_src;
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int u1 = (((u - 128) << 7) + (u - 128)) >> 6;
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int rg = (((u - 128) << 1) + (u - 128) + ((v - 128) << 2) + ((v - 128) << 1)) >> 3;
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int v1 = (((v - 128) << 1) + (v - 128)) >> 1;
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*dst++ = CLAMP(*y0_src + v1, 0, 255);
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*dst++ = CLAMP(*y0_src - rg, 0, 255);
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*dst++ = CLAMP(*y0_src + u1, 0, 255);
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*dst++ = CLAMP(*y1_src + v1, 0, 255);
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*dst++ = CLAMP(*y1_src - rg, 0, 255);
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*dst++ = CLAMP(*y1_src + u1, 0, 255);
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y0_src += 4;
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y1_src += 4;
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u_src += 4;
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v_src += 4;
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}
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if (image.is_valid()) {
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image->set_data(width, height, false, Image::FORMAT_RGB8, image_data);
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} else {
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image.instantiate(width, height, false, Image::FORMAT_RGB8, image_data);
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}
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camera_feed->set_RGB_img(image);
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}
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CopyBufferDecoder::CopyBufferDecoder(CameraFeed *p_camera_feed, bool p_rgba) :
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BufferDecoder(p_camera_feed) {
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rgba = p_rgba;
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image_data.resize(width * height * (rgba ? 4 : 2));
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}
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void CopyBufferDecoder::decode(StreamingBuffer p_buffer) {
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uint8_t *dst = (uint8_t *)image_data.ptrw();
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memcpy(dst, p_buffer.start, p_buffer.length);
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if (image.is_valid()) {
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image->set_data(width, height, false, rgba ? Image::FORMAT_RGBA8 : Image::FORMAT_LA8, image_data);
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} else {
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image.instantiate(width, height, false, rgba ? Image::FORMAT_RGBA8 : Image::FORMAT_LA8, image_data);
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}
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camera_feed->set_RGB_img(image);
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}
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JpegBufferDecoder::JpegBufferDecoder(CameraFeed *p_camera_feed) :
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BufferDecoder(p_camera_feed) {
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}
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void JpegBufferDecoder::decode(StreamingBuffer p_buffer) {
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image_data.resize(p_buffer.length);
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uint8_t *dst = (uint8_t *)image_data.ptrw();
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memcpy(dst, p_buffer.start, p_buffer.length);
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if (image->load_jpg_from_buffer(image_data) == OK) {
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camera_feed->set_RGB_img(image);
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}
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}
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