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// Copyright 2016 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_GPU_VIDEO_DECODE_ACCELERATOR_HELPERS_H_
#define MEDIA_GPU_GPU_VIDEO_DECODE_ACCELERATOR_HELPERS_H_
#include "base/callback.h"
#include "base/memory/weak_ptr.h"
#include "media/base/supported_video_decoder_config.h"
#include "media/gpu/media_gpu_export.h"
#include "media/video/video_decode_accelerator.h"
namespace gl {
class GLContext;
class GLImage;
}
namespace gpu {
namespace gles2 {
class AbstractTexture;
class ContextGroup;
}
}
namespace media {
// Helpers/defines for specific VideoDecodeAccelerator implementations in GPU
// process. Which callbacks are required depends on the implementation.
//
// Note that these callbacks may be called more than once, and so must own/share
// ownership of any objects bound to them.
//
// Unless specified otherwise, these callbacks must be executed on the GPU Child
// thread (i.e. the thread which the VDAs are initialized on).
// Return current GLContext.
using GetGLContextCallback = base::RepeatingCallback<gl::GLContext*(void)>;
// Make the applicable GL context current. To be called by VDAs before
// executing any GL calls. Return true on success, false otherwise.
using MakeGLContextCurrentCallback = base::RepeatingCallback<bool(void)>;
// Bind |image| to |client_texture_id| given |texture_target|. If
// |can_bind_to_sampler| is true, then the image may be used as a sampler
// directly, otherwise a copy to a staging buffer is required.
// Return true on success, false otherwise.
using BindGLImageCallback =
base::RepeatingCallback<bool(uint32_t client_texture_id,
uint32_t texture_target,
const scoped_refptr<gl::GLImage>& image,
bool can_bind_to_sampler)>;
// Return a ContextGroup*, if one is available.
using GetContextGroupCallback =
base::RepeatingCallback<gpu::gles2::ContextGroup*(void)>;
// Create and return an AbstractTexture, if possible.
using CreateAbstractTextureCallback =
base::RepeatingCallback<std::unique_ptr<gpu::gles2::AbstractTexture>(
unsigned /* GLenum */ target,
unsigned /* GLenum */ internal_format,
int /* GLsizei */ width,
int /* GLsizei */ height,
int /* GLsizei */ depth,
int /* GLint */ border,
unsigned /* GLenum */ format,
unsigned /* GLenum */ type)>;
// OpenGL callbacks made by VideoDecodeAccelerator sub-classes.
struct MEDIA_GPU_EXPORT GpuVideoDecodeGLClient {
GpuVideoDecodeGLClient();
~GpuVideoDecodeGLClient();
GpuVideoDecodeGLClient(const GpuVideoDecodeGLClient&);
GpuVideoDecodeGLClient& operator=(const GpuVideoDecodeGLClient&);
// Return current GLContext.
using GetGLContextCallback = base::RepeatingCallback<gl::GLContext*(void)>;
// Make the applicable GL context current. To be called by VDAs before
// executing any GL calls. Return true on success, false otherwise.
using MakeGLContextCurrentCallback = base::RepeatingCallback<bool(void)>;
// Bind |image| to |client_texture_id| given |texture_target|. If
// |can_bind_to_sampler| is true, then the image may be used as a sampler
// directly, otherwise a copy to a staging buffer is required.
// Return true on success, false otherwise.
using BindGLImageCallback =
base::RepeatingCallback<bool(uint32_t client_texture_id,
uint32_t texture_target,
const scoped_refptr<gl::GLImage>& image,
bool can_bind_to_sampler)>;
// Return a ContextGroup*, if one is available.
using GetContextGroupCallback =
base::RepeatingCallback<gpu::gles2::ContextGroup*(void)>;
// Callback to return current GLContext, if available.
GetGLContextCallback get_context;
// Callback for making the relevant context current for GL calls.
MakeGLContextCurrentCallback make_context_current;
// Callback to bind a GLImage to a given texture id and target.
BindGLImageCallback bind_image;
// Callback to return a ContextGroup*.
GetContextGroupCallback get_context_group;
// Callback to return a DecoderContext*.
CreateAbstractTextureCallback create_abstract_texture;
// Whether or not the command buffer is passthrough.
bool is_passthrough = false;
// Whether or not ARB_texture_rectangle is present.
bool supports_arb_texture_rectangle = false;
};
// Convert vector of VDA::SupportedProfile to vector of
// SupportedVideoDecoderConfig.
MEDIA_GPU_EXPORT SupportedVideoDecoderConfigs ConvertFromSupportedProfiles(
const VideoDecodeAccelerator::SupportedProfiles& profiles,
bool allow_encrypted);
} // namespace media
#endif // MEDIA_GPU_GPU_VIDEO_DECODE_ACCELERATOR_HELPERS_H_