File: video_decoder_verbatim.cc

package info (click to toggle)
chromium 138.0.7204.183-1
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 6,071,908 kB
  • sloc: cpp: 34,937,088; ansic: 7,176,967; javascript: 4,110,704; python: 1,419,953; asm: 946,768; xml: 739,971; pascal: 187,324; sh: 89,623; perl: 88,663; objc: 79,944; sql: 50,304; cs: 41,786; fortran: 24,137; makefile: 21,806; php: 13,980; tcl: 13,166; yacc: 8,925; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (68 lines) | stat: -rw-r--r-- 2,248 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "remoting/codec/video_decoder_verbatim.h"

#include <cstddef>
#include <cstdint>

#include "base/containers/span.h"
#include "base/logging.h"
#include "base/notreached.h"
#include "remoting/base/util.h"
#include "remoting/proto/video.pb.h"
#include "third_party/webrtc/modules/desktop_capture/desktop_frame.h"
#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
#include "third_party/webrtc/modules/desktop_capture/desktop_region.h"

namespace remoting {

static const int kBytesPerPixel = 4;

VideoDecoderVerbatim::VideoDecoderVerbatim() = default;
VideoDecoderVerbatim::~VideoDecoderVerbatim() = default;

void VideoDecoderVerbatim::SetPixelFormat(
    VideoDecoder::PixelFormat pixel_format) {
  NOTIMPLEMENTED();
}

bool VideoDecoderVerbatim::DecodePacket(const VideoPacket& packet,
                                        webrtc::DesktopFrame* frame) {
  webrtc::DesktopRegion* region = frame->mutable_updated_region();
  region->Clear();
  base::span<const uint8_t> packet_data = base::as_byte_span(packet.data());
  base::span<const uint8_t> remaining_data = packet_data;
  for (int i = 0; i < packet.dirty_rects_size(); ++i) {
    Rect proto_rect = packet.dirty_rects(i);
    webrtc::DesktopRect rect =
        webrtc::DesktopRect::MakeXYWH(proto_rect.x(), proto_rect.y(),
                                      proto_rect.width(), proto_rect.height());
    region->AddRect(rect);

    if (!DoesRectContain(webrtc::DesktopRect::MakeSize(frame->size()), rect)) {
      LOG(ERROR) << "Invalid packet received.";
      return false;
    }

    const size_t rect_data_size = kBytesPerPixel * rect.width() * rect.height();
    if (remaining_data.size() < rect_data_size) {
      LOG(ERROR) << "Invalid packet received.";
      return false;
    }

    frame->CopyPixelsFrom(remaining_data.data(), kBytesPerPixel * rect.width(),
                          rect);
    remaining_data = remaining_data.subspan(rect_data_size);
  }

  if (!remaining_data.empty()) {
    LOG(ERROR) << "Invalid packet received.";
    return false;
  }

  return true;
}

}  // namespace remoting