| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef MEDIA_GPU_GLES2_DECODER_HELPER_H_ |
| #define MEDIA_GPU_GLES2_DECODER_HELPER_H_ |
| |
| #include <stdint.h> |
| |
| #include <memory> |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/optional.h" |
| #include "media/gpu/media_gpu_export.h" |
| #include "ui/gl/gl_bindings.h" |
| |
| namespace gpu { |
| class DecoderContext; |
| struct Mailbox; |
| namespace gles2 { |
| class TextureRef; |
| } // namespace gles2 |
| } // namespace gpu |
| |
| namespace media { |
| |
| // Utility methods to simplify working with a gpu::DecoderContext from |
| // inside VDAs. |
| class MEDIA_GPU_EXPORT GLES2DecoderHelper { |
| public: |
| static std::unique_ptr<GLES2DecoderHelper> Create( |
| gpu::DecoderContext* decoder); |
| |
| virtual ~GLES2DecoderHelper() {} |
| |
| // TODO(sandersd): Provide scoped version? |
| virtual bool MakeContextCurrent() = 0; |
| |
| // Creates a texture and configures it as a video frame (linear filtering, |
| // clamp to edge, no mipmaps). The context must be current. |
| // |
| // See glTexImage2D() for parameter definitions. |
| // |
| // Returns nullptr on failure, but there are currently no failure paths. |
| virtual scoped_refptr<gpu::gles2::TextureRef> CreateTexture( |
| GLenum target, |
| GLenum internal_format, |
| GLsizei width, |
| GLsizei height, |
| GLenum format, |
| GLenum type) = 0; |
| |
| // Creates a mailbox for a texture. |
| virtual gpu::Mailbox CreateMailbox(gpu::gles2::TextureRef* texture_ref) = 0; |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_GPU_GLES2_DECODER_HELPER_H_ |