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