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// Copyright (c) 2010 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 "remoting/base/encoder_verbatim.h"
#include "gfx/rect.h"
#include "media/base/data_buffer.h"
#include "remoting/base/capture_data.h"
#include "remoting/base/protocol_util.h"
#include "remoting/base/protocol/chromotocol.pb.h"
namespace remoting {
using media::DataBuffer;
void EncoderVerbatim::Encode(scoped_refptr<CaptureData> capture_data,
bool key_frame,
DataAvailableCallback* data_available_callback) {
const InvalidRects& rects = capture_data->dirty_rects();
int num_rects = rects.size();
int index = 0;
for (InvalidRects::const_iterator r = rects.begin();
r != rects.end(); ++r, ++index) {
const gfx::Rect& dirty_rect = *r;
ChromotingHostMessage* msg = new ChromotingHostMessage();
UpdateStreamPacketMessage* packet = msg->mutable_update_stream_packet();
if (EncodeRect(dirty_rect.x(), dirty_rect.y(), dirty_rect.width(),
dirty_rect.height(), capture_data, packet)) {
// Prepare the end rect content.
packet->mutable_end_rect();
EncodingState state = EncodingInProgress;
if (index == 0) {
state |= EncodingStarting;
}
if (index == num_rects - 1) {
state |= EncodingEnded;
}
data_available_callback->Run(msg, state);
}
}
delete data_available_callback;
}
bool EncoderVerbatim::EncodeRect(
int x, int y, int width, int height,
const scoped_refptr<CaptureData>& capture_data,
UpdateStreamPacketMessage* packet) {
// Prepare the begin rect content.
packet->mutable_begin_rect()->set_x(x);
packet->mutable_begin_rect()->set_y(y);
packet->mutable_begin_rect()->set_width(width);
packet->mutable_begin_rect()->set_height(height);
packet->mutable_begin_rect()->set_encoding(EncodingNone);
packet->mutable_begin_rect()->set_pixel_format(capture_data->pixel_format());
// Calculate the size of output.
int bytes_per_pixel = GetBytesPerPixel(capture_data->pixel_format());
int row_size = bytes_per_pixel * width;
int output_size = 0;
for (int i = 0; i < DataPlanes::kPlaneCount; ++i) {
// TODO(hclam): Handle YUV since the height would be different.
const uint8* in = capture_data->data_planes().data[i];
if (!in) continue;
output_size += row_size * height;
}
// Resize the output data buffer.
packet->mutable_rect_data()->mutable_data()->resize(output_size);
uint8* out = (uint8*)packet->mutable_rect_data()->mutable_data()->data();
for (int i = 0; i < DataPlanes::kPlaneCount; ++i) {
// Skip over planes that don't have data.
if (!capture_data->data_planes().data[i])
continue;
const uint8* in = capture_data->data_planes().data[i] +
y * capture_data->data_planes().strides[i] +
x * bytes_per_pixel;
// TODO(hclam): Handle YUV since the height would be different.
for (int j = 0; j < height; ++j) {
DCHECK_LE(row_size, capture_data->data_planes().strides[i]);
memcpy(out, in, width * bytes_per_pixel);
in += capture_data->data_planes().strides[i];
out += row_size;
}
}
return true;
}
} // namespace remoting
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