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// Copyright 2018 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.
#include "media/base/video_frame_layout.h"
#include <string.h>
#include <numeric>
#include <sstream>
#include "base/logging.h"
namespace media {
namespace {
template <class T>
std::string VectorToString(const std::vector<T>& vec) {
std::ostringstream result;
std::string delim;
result << "[";
for (auto& v : vec) {
result << delim;
result << v;
if (delim.size() == 0)
delim = ", ";
}
result << "]";
return result.str();
}
std::vector<ColorPlaneLayout> PlanesFromStrides(
const std::vector<int32_t> strides) {
std::vector<ColorPlaneLayout> planes(strides.size());
for (size_t i = 0; i < strides.size(); i++) {
planes[i].stride = strides[i];
}
return planes;
}
} // namespace
// static
size_t VideoFrameLayout::NumPlanes(VideoPixelFormat format) {
switch (format) {
case PIXEL_FORMAT_YUY2:
case PIXEL_FORMAT_ARGB:
case PIXEL_FORMAT_BGRA:
case PIXEL_FORMAT_XRGB:
case PIXEL_FORMAT_RGB24:
case PIXEL_FORMAT_MJPEG:
case PIXEL_FORMAT_Y16:
case PIXEL_FORMAT_ABGR:
case PIXEL_FORMAT_XBGR:
case PIXEL_FORMAT_XR30:
case PIXEL_FORMAT_XB30:
return 1;
case PIXEL_FORMAT_NV12:
case PIXEL_FORMAT_NV21:
case PIXEL_FORMAT_P016LE:
return 2;
case PIXEL_FORMAT_I420:
case PIXEL_FORMAT_YV12:
case PIXEL_FORMAT_I422:
case PIXEL_FORMAT_I444:
case PIXEL_FORMAT_YUV420P9:
case PIXEL_FORMAT_YUV422P9:
case PIXEL_FORMAT_YUV444P9:
case PIXEL_FORMAT_YUV420P10:
case PIXEL_FORMAT_YUV422P10:
case PIXEL_FORMAT_YUV444P10:
case PIXEL_FORMAT_YUV420P12:
case PIXEL_FORMAT_YUV422P12:
case PIXEL_FORMAT_YUV444P12:
return 3;
case PIXEL_FORMAT_I420A:
return 4;
case PIXEL_FORMAT_UNKNOWN:
// Note: PIXEL_FORMAT_UNKNOWN is used for end-of-stream frame.
// Set its NumPlanes() to zero to avoid NOTREACHED().
return 0;
}
NOTREACHED() << "Unsupported video frame format: " << format;
return 0;
}
// static
base::Optional<VideoFrameLayout> VideoFrameLayout::Create(
VideoPixelFormat format,
const gfx::Size& coded_size) {
return CreateWithStrides(format, coded_size,
std::vector<int32_t>(NumPlanes(format), 0));
}
// static
base::Optional<VideoFrameLayout> VideoFrameLayout::CreateWithStrides(
VideoPixelFormat format,
const gfx::Size& coded_size,
std::vector<int32_t> strides) {
return CreateWithPlanes(format, coded_size, PlanesFromStrides(strides));
}
// static
base::Optional<VideoFrameLayout> VideoFrameLayout::CreateWithPlanes(
VideoPixelFormat format,
const gfx::Size& coded_size,
std::vector<ColorPlaneLayout> planes,
size_t buffer_addr_align,
uint64_t modifier) {
// NOTE: Even if format is UNKNOWN, it is valid if coded_sizes is not Empty().
// TODO(crbug.com/896135): Return base::nullopt,
// if (format != PIXEL_FORMAT_UNKNOWN || !coded_sizes.IsEmpty())
// TODO(crbug.com/896135): Return base::nullopt,
// if (planes.size() != NumPlanes(format))
return VideoFrameLayout(format, coded_size, std::move(planes),
false /*is_multi_planar */, buffer_addr_align,
modifier);
}
base::Optional<VideoFrameLayout> VideoFrameLayout::CreateMultiPlanar(
VideoPixelFormat format,
const gfx::Size& coded_size,
std::vector<ColorPlaneLayout> planes,
size_t buffer_addr_align,
uint64_t modifier) {
// NOTE: Even if format is UNKNOWN, it is valid if coded_sizes is not Empty().
// TODO(crbug.com/896135): Return base::nullopt,
// if (format != PIXEL_FORMAT_UNKNOWN || !coded_sizes.IsEmpty())
// TODO(crbug.com/896135): Return base::nullopt,
// if (planes.size() != NumPlanes(format))
return VideoFrameLayout(format, coded_size, std::move(planes),
true /*is_multi_planar */, buffer_addr_align,
modifier);
}
VideoFrameLayout::VideoFrameLayout(VideoPixelFormat format,
const gfx::Size& coded_size,
std::vector<ColorPlaneLayout> planes,
bool is_multi_planar,
size_t buffer_addr_align,
uint64_t modifier)
: format_(format),
coded_size_(coded_size),
planes_(std::move(planes)),
is_multi_planar_(is_multi_planar),
buffer_addr_align_(buffer_addr_align),
modifier_(modifier) {}
VideoFrameLayout::~VideoFrameLayout() = default;
VideoFrameLayout::VideoFrameLayout(const VideoFrameLayout&) = default;
VideoFrameLayout::VideoFrameLayout(VideoFrameLayout&&) = default;
VideoFrameLayout& VideoFrameLayout::operator=(const VideoFrameLayout&) =
default;
bool VideoFrameLayout::operator==(const VideoFrameLayout& rhs) const {
return format_ == rhs.format_ && coded_size_ == rhs.coded_size_ &&
planes_ == rhs.planes_ && is_multi_planar_ == rhs.is_multi_planar_ &&
buffer_addr_align_ == rhs.buffer_addr_align_ &&
modifier_ == rhs.modifier_;
}
bool VideoFrameLayout::operator!=(const VideoFrameLayout& rhs) const {
return !(*this == rhs);
}
std::ostream& operator<<(std::ostream& ostream,
const VideoFrameLayout& layout) {
ostream << "VideoFrameLayout(format: " << layout.format()
<< ", coded_size: " << layout.coded_size().ToString()
<< ", planes (stride, offset, size): "
<< VectorToString(layout.planes())
<< ", is_multi_planar: " << layout.is_multi_planar()
<< ", buffer_addr_align: " << layout.buffer_addr_align()
<< ", modifier: " << layout.modifier() << ")";
return ostream;
}
} // namespace media
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