| /* |
| * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "webrtc/test/gl/gl_renderer.h" |
| |
| #include <string.h> |
| |
| #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h" |
| |
| namespace webrtc { |
| namespace test { |
| |
| GlRenderer::GlRenderer() |
| : is_init_(false), buffer_(NULL), width_(0), height_(0) {} |
| |
| void GlRenderer::Init() { |
| assert(!is_init_); |
| is_init_ = true; |
| |
| glGenTextures(1, &texture_); |
| } |
| |
| void GlRenderer::Destroy() { |
| if (!is_init_) { |
| return; |
| } |
| |
| is_init_ = false; |
| |
| delete[] buffer_; |
| buffer_ = NULL; |
| |
| glDeleteTextures(1, &texture_); |
| } |
| |
| void GlRenderer::ResizeViewport(size_t width, size_t height) { |
| // TODO(pbos): Aspect ratio, letterbox the video. |
| glViewport(0, 0, width, height); |
| |
| glMatrixMode(GL_PROJECTION); |
| glLoadIdentity(); |
| glClearColor(0.0f, 0.0f, 0.0f, 1.0f); |
| glOrtho(0.0f, 1.0f, 1.0f, 0.0f, -1.0f, 1.0f); |
| glMatrixMode(GL_MODELVIEW); |
| } |
| |
| void GlRenderer::ResizeVideo(size_t width, size_t height) { |
| assert(is_init_); |
| width_ = width; |
| height_ = height; |
| |
| buffer_size_ = width * height * 4; // BGRA |
| |
| delete[] buffer_; |
| buffer_ = new uint8_t[buffer_size_]; |
| assert(buffer_ != NULL); |
| memset(buffer_, 0, buffer_size_); |
| glBindTexture(GL_TEXTURE_2D, texture_); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_BGRA, |
| GL_UNSIGNED_INT_8_8_8_8, static_cast<GLvoid*>(buffer_)); |
| } |
| |
| void GlRenderer::OnFrame(const webrtc::VideoFrame& frame) { |
| assert(is_init_); |
| |
| if (static_cast<size_t>(frame.width()) != width_ || |
| static_cast<size_t>(frame.height()) != height_) { |
| ResizeVideo(frame.width(), frame.height()); |
| } |
| |
| webrtc::ConvertFromI420(frame, kBGRA, 0, buffer_); |
| |
| glEnable(GL_TEXTURE_2D); |
| glBindTexture(GL_TEXTURE_2D, texture_); |
| glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width_, height_, GL_BGRA, |
| GL_UNSIGNED_INT_8_8_8_8, buffer_); |
| |
| glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
| |
| glLoadIdentity(); |
| |
| glBegin(GL_QUADS); |
| { |
| glTexCoord2f(0.0f, 0.0f); |
| glVertex3f(0.0f, 0.0f, 0.0f); |
| |
| glTexCoord2f(0.0f, 1.0f); |
| glVertex3f(0.0f, 1.0f, 0.0f); |
| |
| glTexCoord2f(1.0f, 1.0f); |
| glVertex3f(1.0f, 1.0f, 0.0f); |
| |
| glTexCoord2f(1.0f, 0.0f); |
| glVertex3f(1.0f, 0.0f, 0.0f); |
| } |
| glEnd(); |
| |
| glBindTexture(GL_TEXTURE_2D, 0); |
| glFlush(); |
| } |
| } // test |
| } // webrtc |