content/common/media/media_param_traits.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/common/media/media_param_traits.h"
   6
   7 #include "base/strings/stringprintf.h"
   8 #include "media/audio/audio_parameters.h"
   9 #include "media/base/limits.h"
  10 #include "media/base/video_capture_types.h"
  11
  12 using media::AudioParameters;
  13 using media::ChannelLayout;
  14 using media::VideoCaptureFormat;
  15 using media::VideoPixelFormat;
  16
  17 namespace IPC {
  18
  19 void ParamTraits<AudioParameters>::Write(Message* m,
  20                                          const AudioParameters& p) {
  21   m->WriteInt(static_cast<int>(p.format()));
  22   m->WriteInt(static_cast<int>(p.channel_layout()));
  23   m->WriteInt(p.sample_rate());
  24   m->WriteInt(p.bits_per_sample());
  25   m->WriteInt(p.frames_per_buffer());
  26   m->WriteInt(p.channels());
  27   m->WriteInt(p.effects());
  28 }
  29
  30 bool ParamTraits<AudioParameters>::Read(const Message* m,
  31                                         PickleIterator* iter,
  32                                         AudioParameters* r) {
  33   int format, channel_layout, sample_rate, bits_per_sample,
  34       frames_per_buffer, channels, effects;
  35
  36   if (!iter->ReadInt(&format) ||
  37       !iter->ReadInt(&channel_layout) ||
  38       !iter->ReadInt(&sample_rate) ||
  39       !iter->ReadInt(&bits_per_sample) ||
  40       !iter->ReadInt(&frames_per_buffer) ||
  41       !iter->ReadInt(&channels) ||
  42       !iter->ReadInt(&effects))
  43     return false;
  44
  45   AudioParameters params(static_cast<AudioParameters::Format>(format),
  46          static_cast<ChannelLayout>(channel_layout), channels,
  47          sample_rate, bits_per_sample, frames_per_buffer, effects);
  48   *r = params;
  49   if (!r->IsValid())
  50     return false;
  51   return true;
  52 }
  53
  54 void ParamTraits<AudioParameters>::Log(const AudioParameters& p,
  55                                        std::string* l) {
  56   l->append(base::StringPrintf("<AudioParameters>"));
  57 }
  58
  59 void ParamTraits<VideoCaptureFormat>::Write(Message* m,
  60                                             const VideoCaptureFormat& p) {
  61   // Crash during Send rather than have a failure at the message handler.
  62   m->WriteInt(p.frame_size.width());
  63   m->WriteInt(p.frame_size.height());
  64   m->WriteFloat(p.frame_rate);
  65   m->WriteInt(static_cast<int>(p.pixel_format));
  66 }
  67
  68 bool ParamTraits<VideoCaptureFormat>::Read(const Message* m,
  69                                            PickleIterator* iter,
  70                                            VideoCaptureFormat* r) {
  71   int frame_size_width, frame_size_height, pixel_format;
  72   if (!iter->ReadInt(&frame_size_width) ||
  73       !iter->ReadInt(&frame_size_height) ||
  74       !iter->ReadFloat(&r->frame_rate) ||
  75       !iter->ReadInt(&pixel_format))
  76     return false;
  77
  78   r->frame_size.SetSize(frame_size_width, frame_size_height);
  79   r->pixel_format = static_cast<VideoPixelFormat>(pixel_format);
  80   if (!r->IsValid())
  81     return false;
  82   return true;
  83 }
  84
  85 void ParamTraits<VideoCaptureFormat>::Log(const VideoCaptureFormat& p,
  86                                           std::string* l) {
  87   l->append(base::StringPrintf("<VideoCaptureFormat>"));
  88 }
  89
  90 }