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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include <GLES2/gl2.h> | |
| 6 | |
| 7 #include "base/message_loop.h" | |
| 8 #include "chrome/renderer/ggl/ggl.h" | |
| 9 #include "chrome/renderer/media/gles2_video_decode_context.h" | |
| 10 | |
| 11 Gles2VideoDecodeContext::Gles2VideoDecodeContext( | |
| 12 MessageLoop* message_loop, bool memory_mapped, ggl::Context* context) | |
| 13 : message_loop_(message_loop), | |
| 14 memory_mapped_(memory_mapped), | |
| 15 context_(context) { | |
| 16 } | |
| 17 | |
| 18 Gles2VideoDecodeContext::~Gles2VideoDecodeContext() { | |
| 19 } | |
| 20 | |
| 21 void* Gles2VideoDecodeContext::GetDevice() { | |
| 22 // This decode context is used inside the renderer and so hardware decoder | |
| 23 // device handler should not be used. | |
| 24 return NULL; | |
| 25 } | |
| 26 | |
| 27 void Gles2VideoDecodeContext::AllocateVideoFrames( | |
| 28 int num_frames, size_t width, size_t height, | |
| 29 media::VideoFrame::Format format, | |
| 30 std::vector<scoped_refptr<media::VideoFrame> >* frames_out, Task* task) { | |
| 31 if (MessageLoop::current() != message_loop_) { | |
| 32 message_loop_->PostTask( | |
| 33 FROM_HERE, | |
| 34 NewRunnableMethod(this, &Gles2VideoDecodeContext::AllocateVideoFrames, | |
| 35 num_frames, width, height, format, frames_out, | |
| 36 task)); | |
| 37 return; | |
| 38 } | |
| 39 | |
| 40 // In this method we need to make the ggl context current and then generate | |
| 41 // textures for each video frame. We also need to allocate memory for each | |
| 42 // texture generated. | |
| 43 bool ret = ggl::MakeCurrent(context_); | |
| 44 CHECK(ret) << "Failed to switch context"; | |
| 45 | |
| 46 frames_.resize(num_frames); | |
| 47 for (int i = 0; i < num_frames; ++i) { | |
| 48 int planes = media::VideoFrame::GetNumberOfPlanes(format); | |
| 49 media::VideoFrame::GlTexture textures[media::VideoFrame::kMaxPlanes]; | |
| 50 | |
| 51 // Set the color format of the textures. | |
| 52 DCHECK(format == media::VideoFrame::RGBA || | |
| 53 format == media::VideoFrame::YV12); | |
| 54 int gl_format = format == media::VideoFrame::RGBA ? GL_RGBA : GL_LUMINANCE; | |
| 55 | |
| 56 glGenTextures(planes, textures); | |
| 57 for (int j = 0; j < planes; ++j) { | |
| 58 glBindTexture(GL_TEXTURE_2D, textures[j]); | |
| 59 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | |
| 60 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); | |
| 61 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | |
| 62 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | |
| 63 glTexImage2D(GL_TEXTURE_2D, 0, gl_format, width, height, 0, gl_format, | |
| 64 GL_UNSIGNED_BYTE, NULL); | |
| 65 } | |
| 66 glFlush(); | |
| 67 | |
| 68 scoped_refptr<media::VideoFrame> frame; | |
| 69 media::VideoFrame::CreateFrameGlTexture(format, width, height, textures, | |
| 70 &frame); | |
| 71 frames_[i] = frame; | |
| 72 } | |
| 73 *frames_out = frames_; | |
| 74 | |
| 75 task->Run(); | |
| 76 delete task; | |
| 77 } | |
| 78 | |
| 79 void Gles2VideoDecodeContext::ReleaseAllVideoFrames() { | |
| 80 if (MessageLoop::current() != message_loop_) { | |
| 81 message_loop_->PostTask( | |
| 82 FROM_HERE, | |
| 83 NewRunnableMethod(this, | |
| 84 &Gles2VideoDecodeContext::ReleaseAllVideoFrames)); | |
| 85 return; | |
| 86 } | |
| 87 | |
| 88 // Make the context current and then release the video frames. | |
| 89 bool ret = ggl::MakeCurrent(context_); | |
| 90 CHECK(ret) << "Failed to switch context"; | |
| 91 | |
| 92 for (size_t i = 0; i < frames_.size(); ++i) { | |
| 93 for (size_t j = 0; j < frames_[i]->planes(); ++j) { | |
| 94 media::VideoFrame::GlTexture texture = frames_[i]->gl_texture(j); | |
| 95 glDeleteTextures(1, &texture); | |
| 96 } | |
| 97 } | |
| 98 frames_.clear(); | |
| 99 } | |
| 100 | |
| 101 void Gles2VideoDecodeContext::ConvertToVideoFrame( | |
| 102 void* buffer, scoped_refptr<media::VideoFrame> frame, Task* task) { | |
| 103 DCHECK(memory_mapped_); | |
| 104 // TODO(hclam): Implement. | |
| 105 } | |
| 106 | |
| 107 void Gles2VideoDecodeContext::Destroy(Task* task) { | |
| 108 if (MessageLoop::current() != message_loop_) { | |
| 109 message_loop_->PostTask( | |
| 110 FROM_HERE, | |
| 111 NewRunnableMethod(this, &Gles2VideoDecodeContext::Destroy, task)); | |
| 112 return; | |
| 113 } | |
| 114 | |
| 115 ReleaseAllVideoFrames(); | |
| 116 DCHECK_EQ(0u, frames_.size()); | |
| 117 | |
| 118 task->Run(); | |
| 119 delete task; | |
| 120 } | |
| 121 | |
| 122 DISABLE_RUNNABLE_METHOD_REFCOUNT(Gles2VideoDecodeContext); | |
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