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