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rhubarb-lip-sync/lib/webrtc-8d2248ff/webrtc/common_video/video_frame_buffer.cc

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/*
* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <algorithm>
#include "webrtc/common_video/include/video_frame_buffer.h"
#include "webrtc/base/checks.h"
#include "webrtc/base/keep_ref_until_done.h"
#include "libyuv/convert.h"
#include "libyuv/scale.h"
// Aligning pointer to 64 bytes for improved performance, e.g. use SIMD.
static const int kBufferAlignment = 64;
namespace webrtc {
namespace {
int I420DataSize(int height, int stride_y, int stride_u, int stride_v) {
return stride_y * height + (stride_u + stride_v) * ((height + 1) / 2);
}
} // namespace
uint8_t* VideoFrameBuffer::MutableDataY() {
RTC_NOTREACHED();
return nullptr;
}
uint8_t* VideoFrameBuffer::MutableDataU() {
RTC_NOTREACHED();
return nullptr;
}
uint8_t* VideoFrameBuffer::MutableDataV() {
RTC_NOTREACHED();
return nullptr;
}
VideoFrameBuffer::~VideoFrameBuffer() {}
I420Buffer::I420Buffer(int width, int height)
: I420Buffer(width, height, width, (width + 1) / 2, (width + 1) / 2) {
}
I420Buffer::I420Buffer(int width,
int height,
int stride_y,
int stride_u,
int stride_v)
: width_(width),
height_(height),
stride_y_(stride_y),
stride_u_(stride_u),
stride_v_(stride_v),
data_(static_cast<uint8_t*>(AlignedMalloc(
I420DataSize(height, stride_y, stride_u, stride_v),
kBufferAlignment))) {
RTC_DCHECK_GT(width, 0);
RTC_DCHECK_GT(height, 0);
RTC_DCHECK_GE(stride_y, width);
RTC_DCHECK_GE(stride_u, (width + 1) / 2);
RTC_DCHECK_GE(stride_v, (width + 1) / 2);
}
I420Buffer::~I420Buffer() {
}
rtc::scoped_refptr<I420Buffer> I420Buffer::Create(int width, int height) {
return new rtc::RefCountedObject<I420Buffer>(width, height);
}
rtc::scoped_refptr<I420Buffer> I420Buffer::Create(int width,
int height,
int stride_y,
int stride_u,
int stride_v) {
return new rtc::RefCountedObject<I420Buffer>(
width, height, stride_y, stride_u, stride_v);
}
void I420Buffer::InitializeData() {
memset(data_.get(), 0,
I420DataSize(height_, stride_y_, stride_u_, stride_v_));
}
int I420Buffer::width() const {
return width_;
}
int I420Buffer::height() const {
return height_;
}
const uint8_t* I420Buffer::DataY() const {
return data_.get();
}
const uint8_t* I420Buffer::DataU() const {
return data_.get() + stride_y_ * height_;
}
const uint8_t* I420Buffer::DataV() const {
return data_.get() + stride_y_ * height_ + stride_u_ * ((height_ + 1) / 2);
}
uint8_t* I420Buffer::MutableDataY() {
return const_cast<uint8_t*>(DataY());
}
uint8_t* I420Buffer::MutableDataU() {
return const_cast<uint8_t*>(DataU());
}
uint8_t* I420Buffer::MutableDataV() {
return const_cast<uint8_t*>(DataV());
}
int I420Buffer::StrideY() const {
return stride_y_;
}
int I420Buffer::StrideU() const {
return stride_u_;
}
int I420Buffer::StrideV() const {
return stride_v_;
}
void* I420Buffer::native_handle() const {
return nullptr;
}
rtc::scoped_refptr<VideoFrameBuffer> I420Buffer::NativeToI420Buffer() {
RTC_NOTREACHED();
return nullptr;
}
rtc::scoped_refptr<I420Buffer> I420Buffer::Copy(
const rtc::scoped_refptr<VideoFrameBuffer>& source) {
int width = source->width();
int height = source->height();
rtc::scoped_refptr<I420Buffer> target = I420Buffer::Create(width, height);
RTC_CHECK(libyuv::I420Copy(source->DataY(), source->StrideY(),
source->DataU(), source->StrideU(),
source->DataV(), source->StrideV(),
target->MutableDataY(), target->StrideY(),
target->MutableDataU(), target->StrideU(),
target->MutableDataV(), target->StrideV(),
width, height) == 0);
return target;
}
void I420Buffer::SetToBlack() {
RTC_CHECK(libyuv::I420Rect(MutableDataY(), StrideY(),
MutableDataU(), StrideU(),
MutableDataV(), StrideV(),
0, 0, width(), height(),
0, 128, 128) == 0);
}
void I420Buffer::CropAndScaleFrom(
const rtc::scoped_refptr<VideoFrameBuffer>& src,
int offset_x,
int offset_y,
int crop_width,
int crop_height) {
RTC_CHECK_LE(crop_width, src->width());
RTC_CHECK_LE(crop_height, src->height());
RTC_CHECK_LE(crop_width + offset_x, src->width());
RTC_CHECK_LE(crop_height + offset_y, src->height());
RTC_CHECK_GE(offset_x, 0);
RTC_CHECK_GE(offset_y, 0);
// Make sure offset is even so that u/v plane becomes aligned.
const int uv_offset_x = offset_x / 2;
const int uv_offset_y = offset_y / 2;
offset_x = uv_offset_x * 2;
offset_y = uv_offset_y * 2;
const uint8_t* y_plane =
src->DataY() + src->StrideY() * offset_y + offset_x;
const uint8_t* u_plane =
src->DataU() + src->StrideU() * uv_offset_y + uv_offset_x;
const uint8_t* v_plane =
src->DataV() + src->StrideV() * uv_offset_y + uv_offset_x;
int res = libyuv::I420Scale(y_plane, src->StrideY(),
u_plane, src->StrideU(),
v_plane, src->StrideV(),
crop_width, crop_height,
MutableDataY(), StrideY(),
MutableDataU(), StrideU(),
MutableDataV(), StrideV(),
width(), height(), libyuv::kFilterBox);
RTC_DCHECK_EQ(res, 0);
}
void I420Buffer::CropAndScaleFrom(
const rtc::scoped_refptr<VideoFrameBuffer>& src) {
const int crop_width =
std::min(src->width(), width() * src->height() / height());
const int crop_height =
std::min(src->height(), height() * src->width() / width());
CropAndScaleFrom(
src,
(src->width() - crop_width) / 2, (src->height() - crop_height) / 2,
crop_width, crop_height);
}
void I420Buffer::ScaleFrom(const rtc::scoped_refptr<VideoFrameBuffer>& src) {
CropAndScaleFrom(src, 0, 0, src->width(), src->height());
}
rtc::scoped_refptr<I420Buffer> I420Buffer::CopyKeepStride(
const rtc::scoped_refptr<VideoFrameBuffer>& source) {
int width = source->width();
int height = source->height();
int stride_y = source->StrideY();
int stride_u = source->StrideU();
int stride_v = source->StrideV();
rtc::scoped_refptr<I420Buffer> target =
I420Buffer::Create(width, height, stride_y, stride_u, stride_v);
RTC_CHECK(libyuv::I420Copy(source->DataY(), stride_y,
source->DataU(), stride_u,
source->DataV(), stride_v,
target->MutableDataY(), stride_y,
target->MutableDataU(), stride_u,
target->MutableDataV(), stride_v,
width, height) == 0);
return target;
}
NativeHandleBuffer::NativeHandleBuffer(void* native_handle,
int width,
int height)
: native_handle_(native_handle), width_(width), height_(height) {
RTC_DCHECK(native_handle != nullptr);
RTC_DCHECK_GT(width, 0);
RTC_DCHECK_GT(height, 0);
}
int NativeHandleBuffer::width() const {
return width_;
}
int NativeHandleBuffer::height() const {
return height_;
}
const uint8_t* NativeHandleBuffer::DataY() const {
RTC_NOTREACHED(); // Should not be called.
return nullptr;
}
const uint8_t* NativeHandleBuffer::DataU() const {
RTC_NOTREACHED(); // Should not be called.
return nullptr;
}
const uint8_t* NativeHandleBuffer::DataV() const {
RTC_NOTREACHED(); // Should not be called.
return nullptr;
}
int NativeHandleBuffer::StrideY() const {
RTC_NOTREACHED(); // Should not be called.
return 0;
}
int NativeHandleBuffer::StrideU() const {
RTC_NOTREACHED(); // Should not be called.
return 0;
}
int NativeHandleBuffer::StrideV() const {
RTC_NOTREACHED(); // Should not be called.
return 0;
}
void* NativeHandleBuffer::native_handle() const {
return native_handle_;
}
WrappedI420Buffer::WrappedI420Buffer(int width,
int height,
const uint8_t* y_plane,
int y_stride,
const uint8_t* u_plane,
int u_stride,
const uint8_t* v_plane,
int v_stride,
const rtc::Callback0<void>& no_longer_used)
: width_(width),
height_(height),
y_plane_(y_plane),
u_plane_(u_plane),
v_plane_(v_plane),
y_stride_(y_stride),
u_stride_(u_stride),
v_stride_(v_stride),
no_longer_used_cb_(no_longer_used) {
}
WrappedI420Buffer::~WrappedI420Buffer() {
no_longer_used_cb_();
}
int WrappedI420Buffer::width() const {
return width_;
}
int WrappedI420Buffer::height() const {
return height_;
}
const uint8_t* WrappedI420Buffer::DataY() const {
return y_plane_;
}
const uint8_t* WrappedI420Buffer::DataU() const {
return u_plane_;
}
const uint8_t* WrappedI420Buffer::DataV() const {
return v_plane_;
}
int WrappedI420Buffer::StrideY() const {
return y_stride_;
}
int WrappedI420Buffer::StrideU() const {
return u_stride_;
}
int WrappedI420Buffer::StrideV() const {
return v_stride_;
}
void* WrappedI420Buffer::native_handle() const {
return nullptr;
}
rtc::scoped_refptr<VideoFrameBuffer> WrappedI420Buffer::NativeToI420Buffer() {
RTC_NOTREACHED();
return nullptr;
}
} // namespace webrtc
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