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// Copyright (c) 2011 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_util.h"
#include "base/logging.h"
#include "media/base/video_frame.h"
namespace media {
static void CopyPlane(size_t plane, const uint8* source, int stride, int rows,
VideoFrame* frame) {
uint8* dest = frame->data(plane);
int dest_stride = frame->stride(plane);
// Clamp in case source frame has smaller stride.
int bytes_to_copy_per_row = std::min(frame->row_bytes(plane), stride);
// Clamp in case source frame has smaller height.
int rows_to_copy = std::min(frame->rows(plane), rows);
// Copy!
for (int row = 0; row < rows_to_copy; ++row) {
memcpy(dest, source, bytes_to_copy_per_row);
source += stride;
dest += dest_stride;
}
}
void CopyYPlane(const uint8* source, int stride, int rows, VideoFrame* frame) {
CopyPlane(VideoFrame::kYPlane, source, stride, rows, frame);
}
void CopyUPlane(const uint8* source, int stride, int rows, VideoFrame* frame) {
CopyPlane(VideoFrame::kUPlane, source, stride, rows, frame);
}
void CopyVPlane(const uint8* source, int stride, int rows, VideoFrame* frame) {
CopyPlane(VideoFrame::kVPlane, source, stride, rows, frame);
}
} // namespace media
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