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// Copyright 2014 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.
//
// This file contains the implementation of TegraV4L2Device used on
// Tegra platform.
#ifndef MEDIA_GPU_TEGRA_V4L2_DEVICE_H_
#define MEDIA_GPU_TEGRA_V4L2_DEVICE_H_
#include <stddef.h>
#include <stdint.h>
#include "base/macros.h"
#include "media/gpu/v4l2_device.h"
#include "ui/gl/gl_bindings.h"
namespace media {
// This class implements the V4L2Device interface for Tegra platform.
// It interfaces with libtegrav4l2 library which provides API that exhibit the
// V4L2 specification via the library API instead of system calls.
class TegraV4L2Device : public V4L2Device {
public:
TegraV4L2Device();
// V4L2Device implementation.
bool Open(Type type, uint32_t v4l2_pixfmt) override;
int Ioctl(int flags, void* arg) override;
bool Poll(bool poll_device, bool* event_pending) override;
bool SetDevicePollInterrupt() override;
bool ClearDevicePollInterrupt() override;
void* Mmap(void* addr,
unsigned int len,
int prot,
int flags,
unsigned int offset) override;
void Munmap(void* addr, unsigned int len) override;
std::vector<base::ScopedFD> GetDmabufsForV4L2Buffer(
int index,
size_t num_planes,
enum v4l2_buf_type buf_type) override;
bool CanCreateEGLImageFrom(uint32_t v4l2_pixfmt) override;
EGLImageKHR CreateEGLImage(
EGLDisplay egl_display,
EGLContext egl_context,
GLuint texture_id,
const gfx::Size& size,
unsigned int buffer_index,
uint32_t v4l2_pixfmt,
const std::vector<base::ScopedFD>& dmabuf_fds) override;
EGLBoolean DestroyEGLImage(EGLDisplay egl_display,
EGLImageKHR egl_image) override;
GLenum GetTextureTarget() override;
uint32_t PreferredInputFormat(Type type) override;
std::vector<uint32_t> GetSupportedImageProcessorPixelformats(
v4l2_buf_type buf_type) override;
VideoDecodeAccelerator::SupportedProfiles GetSupportedDecodeProfiles(
const size_t num_formats,
const uint32_t pixelformats[]) override;
VideoEncodeAccelerator::SupportedProfiles GetSupportedEncodeProfiles()
override;
bool IsImageProcessingSupported() override;
bool IsJpegDecodingSupported() override;
private:
~TegraV4L2Device() override;
bool Initialize() override;
bool OpenInternal(Type type);
void Close();
// The actual device fd.
int device_fd_ = -1;
DISALLOW_COPY_AND_ASSIGN(TegraV4L2Device);
};
} // namespace media
#endif // MEDIA_GPU_TEGRA_V4L2_DEVICE_H_
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