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 "content/common/media/audio_messages.h"
   9 #include "content/common/media/video_capture_messages.h"
  10 #include "ipc/ipc_message_utils.h"
  11 #include "media/audio/audio_parameters.h"
  12 #include "media/audio/point.h"
  13 #include "media/base/limits.h"
  14 #include "ui/gfx/ipc/gfx_param_traits.h"
  15
  16 using media::AudioParameters;
  17 using media::ChannelLayout;
  18 using media::VideoCaptureFormat;
  19
  20 namespace IPC {
  21
  22 void ParamTraits<AudioParameters>::Write(Message* m,
  23                                          const AudioParameters& p) {
  24   WriteParam(m, p.format());
  25   WriteParam(m, p.channel_layout());
  26   WriteParam(m, p.sample_rate());
  27   WriteParam(m, p.bits_per_sample());
  28   WriteParam(m, p.frames_per_buffer());
  29   WriteParam(m, p.channels());
  30   WriteParam(m, p.effects());
  31   WriteParam(m, p.mic_positions());
  32 }
  33
  34 bool ParamTraits<AudioParameters>::Read(const Message* m,
  35                                         base::PickleIterator* iter,
  36                                         AudioParameters* r) {
  37   AudioParameters::Format format;
  38   ChannelLayout channel_layout;
  39   int sample_rate, bits_per_sample, frames_per_buffer, channels, effects;
  40   std::vector<media::Point> mic_positions;
  41
  42   if (!ReadParam(m, iter, &format) || !ReadParam(m, iter, &channel_layout) ||
  43       !ReadParam(m, iter, &sample_rate) ||
  44       !ReadParam(m, iter, &bits_per_sample) ||
  45       !ReadParam(m, iter, &frames_per_buffer) ||
  46       !ReadParam(m, iter, &channels) || !ReadParam(m, iter, &effects) ||
  47       !ReadParam(m, iter, &mic_positions)) {
  48     return false;
  49   }
  50
  51   AudioParameters params(format, channel_layout, sample_rate, bits_per_sample,
  52                          frames_per_buffer);
  53   params.set_channels_for_discrete(channels);
  54   params.set_effects(effects);
  55   params.set_mic_positions(mic_positions);
  56
  57   *r = params;
  58   return r->IsValid();
  59 }
  60
  61 void ParamTraits<AudioParameters>::Log(const AudioParameters& p,
  62                                        std::string* l) {
  63   l->append(base::StringPrintf("<AudioParameters>"));
  64 }
  65
  66 void ParamTraits<VideoCaptureFormat>::Write(Message* m,
  67                                             const VideoCaptureFormat& p) {
  68   WriteParam(m, p.frame_size);
  69   WriteParam(m, p.frame_rate);
  70   WriteParam(m, p.pixel_format);
  71   WriteParam(m, p.pixel_storage);
  72 }
  73
  74 bool ParamTraits<VideoCaptureFormat>::Read(const Message* m,
  75                                            base::PickleIterator* iter,
  76                                            VideoCaptureFormat* r) {
  77   if (!ReadParam(m, iter, &r->frame_size) ||
  78       !ReadParam(m, iter, &r->frame_rate) ||
  79       !ReadParam(m, iter, &r->pixel_format) ||
  80       !ReadParam(m, iter, &r->pixel_storage)) {
  81     return false;
  82   }
  83   return r->IsValid();
  84 }
  85
  86 void ParamTraits<VideoCaptureFormat>::Log(const VideoCaptureFormat& p,
  87                                           std::string* l) {
  88   l->append(base::StringPrintf("<VideoCaptureFormat> %s",
  89                                media::VideoCaptureFormat::ToString(p).c_str()));
  90 }
  91
  92 }  // namespace IPC