diff options
Diffstat (limited to 'third_party/libwebrtc/test/gl/gl_renderer.cc')
-rw-r--r-- | third_party/libwebrtc/test/gl/gl_renderer.cc | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/gl/gl_renderer.cc b/third_party/libwebrtc/test/gl/gl_renderer.cc new file mode 100644 index 0000000000..10162ee056 --- /dev/null +++ b/third_party/libwebrtc/test/gl/gl_renderer.cc @@ -0,0 +1,112 @@ +/* + * 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 "test/gl/gl_renderer.h" + +#include <string.h> + +#include "common_video/libyuv/include/webrtc_libyuv.h" +#include "rtc_base/checks.h" + +namespace webrtc { +namespace test { + +GlRenderer::GlRenderer() + : is_init_(false), buffer_(NULL), width_(0), height_(0) {} + +void GlRenderer::Init() { + RTC_DCHECK(!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) { + RTC_DCHECK(is_init_); + width_ = width; + height_ = height; + + buffer_size_ = width * height * 4; // BGRA + + delete[] buffer_; + buffer_ = new uint8_t[buffer_size_]; + RTC_DCHECK(buffer_); + 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) { + RTC_DCHECK(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, VideoType::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(); +} +} // namespace test +} // namespace webrtc |