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// Copyright 2017 The Chromium Authors
// 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 "media/gpu/media_gpu_export.h"
#include "ui/gl/gl_bindings.h"
namespace gpu {
class DecoderContext;
struct Mailbox;
namespace gles2 {
class AbstractTexture;
} // namespace gles2
} // namespace gpu
namespace gl {
class GLContext;
} // namespace gl
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). The context must be current. It is up to the caller to
// ensure that the entire texture is initialized before providing it to the
// renderer. For th
//
// See glTexImage2D() for parameter definitions.
//
// Returns nullptr on failure, but there are currently no failure paths.
virtual std::unique_ptr<gpu::gles2::AbstractTexture> CreateTexture(
GLenum target,
GLenum internal_format,
GLsizei width,
GLsizei height,
GLenum format,
GLenum type) = 0;
// Gets the associated GLContext.
virtual gl::GLContext* GetGLContext() = 0;
// Creates a mailbox for a texture.
virtual gpu::Mailbox CreateMailbox(
gpu::gles2::AbstractTexture* texture_ref) = 0;
};
} // namespace media
#endif // MEDIA_GPU_GLES2_DECODER_HELPER_H_
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