buffer_validation.cc | Explore in Territory

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "media/gpu/buffer_validation.h"

#include <algorithm>
#include <cstdint>

#include "base/logging.h"
#include "base/numerics/checked_math.h"
#include "base/numerics/safe_conversions.h"
#include "build/build_config.h"
#include "media/base/video_frame.h"
#include "media/media_buildflags.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/gpu_memory_buffer.h"

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#include <drm_fourcc.h>
#include <sys/types.h>
#include <unistd.h>
#endif  // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)

#if BUILDFLAG(IS_CHROMEOS)
#include "ui/gfx/switches.h"
#endif  // BUILDFLAG(IS_CHROMEOS)

namespace media {

namespace {
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#ifndef I915_FORMAT_MOD_4_TILED_MTL_MC_CCS
// TODO(b/271455200): Remove this definition once drm_fourcc.h contains it.
/*
 * Intel color control surfaces (CCS) for display ver 14 media compression
 *
 * The main surface is tile4 and at plane index 0, the CCS is linear and
 * at index 1. A 64B CCS cache line corresponds to an area of 4x1 tiles in
 * main surface. In other words, 4 bits in CCS map to a main surface cache
 * line pair. The main surface pitch is required to be a multiple of four
 * tile4 widths. For semi-planar formats like NV12, CCS planes follow the
 * Y and UV planes i.e., planes 0 and 1 are used for Y and UV surfaces,
 * planes 2 and 3 for the respective CCS.
 */
#define I915_FORMAT_MOD_4_TILED_MTL_MC_CCS …
#endif
// Returns true if |modifier| is known to correspond to the Intel media
// compression feature.
bool IsIntelMediaCompressedModifier(uint64_t modifier) { … }
#endif  // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
}  // namespace

bool GetFileSize(const int fd, size_t* size) { … }

bool VerifyGpuMemoryBufferHandle(
    media::VideoPixelFormat pixel_format,
    const gfx::Size& coded_size,
    const gfx::GpuMemoryBufferHandle& gmb_handle,
    GetFileSizeCBForTesting file_size_cb_for_testing) { … }

}  // namespace media
chromium/media/gpu/buffer_validation.cc
