pbos@webrtc.org | 2a9108f | 2013-05-16 12:08:03 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
pbos@webrtc.org | 24e2089 | 2013-10-28 16:32:01 +0000 | [diff] [blame] | 11 | #include "webrtc/test/gl/gl_renderer.h" |
pbos@webrtc.org | 2a9108f | 2013-05-16 12:08:03 +0000 | [diff] [blame] | 12 | |
pbos@webrtc.org | 3f45c2e | 2013-08-05 16:22:53 +0000 | [diff] [blame] | 13 | #include <string.h> |
pbos@webrtc.org | 2a9108f | 2013-05-16 12:08:03 +0000 | [diff] [blame] | 14 | |
| 15 | #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h" |
| 16 | |
| 17 | namespace webrtc { |
| 18 | namespace test { |
| 19 | |
| 20 | GlRenderer::GlRenderer() |
| 21 | : is_init_(false), buffer_(NULL), width_(0), height_(0) {} |
| 22 | |
| 23 | void GlRenderer::Init() { |
| 24 | assert(!is_init_); |
| 25 | is_init_ = true; |
| 26 | |
| 27 | glGenTextures(1, &texture_); |
| 28 | } |
| 29 | |
| 30 | void GlRenderer::Destroy() { |
| 31 | if (!is_init_) { |
| 32 | return; |
| 33 | } |
| 34 | |
| 35 | is_init_ = false; |
| 36 | |
| 37 | delete[] buffer_; |
| 38 | buffer_ = NULL; |
| 39 | |
| 40 | glDeleteTextures(1, &texture_); |
| 41 | } |
| 42 | |
| 43 | void GlRenderer::ResizeViewport(size_t width, size_t height) { |
| 44 | // TODO(pbos): Aspect ratio, letterbox the video. |
| 45 | glViewport(0, 0, width, height); |
| 46 | |
| 47 | glMatrixMode(GL_PROJECTION); |
| 48 | glLoadIdentity(); |
| 49 | glClearColor(0.0f, 0.0f, 0.0f, 1.0f); |
| 50 | glOrtho(0.0f, 1.0f, 1.0f, 0.0f, -1.0f, 1.0f); |
| 51 | glMatrixMode(GL_MODELVIEW); |
| 52 | } |
| 53 | |
| 54 | void GlRenderer::ResizeVideo(size_t width, size_t height) { |
| 55 | assert(is_init_); |
| 56 | width_ = width; |
| 57 | height_ = height; |
| 58 | |
| 59 | buffer_size_ = width * height * 4; // BGRA |
| 60 | |
| 61 | delete[] buffer_; |
| 62 | buffer_ = new uint8_t[buffer_size_]; |
| 63 | assert(buffer_ != NULL); |
| 64 | memset(buffer_, 0, buffer_size_); |
| 65 | glBindTexture(GL_TEXTURE_2D, texture_); |
| 66 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0); |
| 67 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0); |
| 68 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_BGRA, |
| 69 | GL_UNSIGNED_INT_8_8_8_8, static_cast<GLvoid*>(buffer_)); |
| 70 | } |
| 71 | |
| 72 | void GlRenderer::RenderFrame(const webrtc::I420VideoFrame& frame, |
| 73 | int /*render_delay_ms*/) { |
| 74 | assert(is_init_); |
| 75 | |
| 76 | if (static_cast<size_t>(frame.width()) != width_ || |
| 77 | static_cast<size_t>(frame.height()) != height_) { |
| 78 | ResizeVideo(frame.width(), frame.height()); |
| 79 | } |
| 80 | |
| 81 | webrtc::ConvertFromI420(frame, kBGRA, 0, buffer_); |
| 82 | |
| 83 | glEnable(GL_TEXTURE_2D); |
| 84 | glBindTexture(GL_TEXTURE_2D, texture_); |
| 85 | glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width_, height_, GL_BGRA, |
| 86 | GL_UNSIGNED_INT_8_8_8_8, buffer_); |
| 87 | |
| 88 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
| 89 | |
| 90 | glLoadIdentity(); |
| 91 | |
| 92 | glBegin(GL_QUADS); |
| 93 | { |
| 94 | glTexCoord2f(0.0f, 0.0f); |
| 95 | glVertex3f(0.0f, 0.0f, 0.0f); |
| 96 | |
| 97 | glTexCoord2f(0.0f, 1.0f); |
| 98 | glVertex3f(0.0f, 1.0f, 0.0f); |
| 99 | |
| 100 | glTexCoord2f(1.0f, 1.0f); |
| 101 | glVertex3f(1.0f, 1.0f, 0.0f); |
| 102 | |
| 103 | glTexCoord2f(1.0f, 0.0f); |
| 104 | glVertex3f(1.0f, 0.0f, 0.0f); |
| 105 | } |
| 106 | glEnd(); |
| 107 | |
| 108 | glBindTexture(GL_TEXTURE_2D, 0); |
| 109 | glFlush(); |
| 110 | } |
| 111 | } // test |
| 112 | } // webrtc |