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, channels, sample_rate,
  48                          bits_per_sample, frames_per_buffer, effects);
  49   *r = params;
  50   return r->IsValid();
  51 }
  52
  53 void ParamTraits<AudioParameters>::Log(const AudioParameters& p,
  54                                        std::string* l) {
  55   l->append(base::StringPrintf("<AudioParameters>"));
  56 }
  57
  58 void ParamTraits<VideoCaptureFormat>::Write(Message* m,
  59                                             const VideoCaptureFormat& p) {
  60   WriteParam(m, p.frame_size);
  61   WriteParam(m, p.frame_rate);
  62   WriteParam(m, p.pixel_format);
  63   WriteParam(m, p.pixel_storage);
  64 }
  65
  66 bool ParamTraits<VideoCaptureFormat>::Read(const Message* m,
  67                                            base::PickleIterator* iter,
  68                                            VideoCaptureFormat* r) {
  69   if (!ReadParam(m, iter, &r->frame_size) ||
  70       !ReadParam(m, iter, &r->frame_rate) ||
  71       !ReadParam(m, iter, &r->pixel_format) ||
  72       !ReadParam(m, iter, &r->pixel_storage)) {
  73     return false;
  74   }
  75   return r->IsValid();
  76 }
  77
  78 void ParamTraits<VideoCaptureFormat>::Log(const VideoCaptureFormat& p,
  79                                           std::string* l) {
  80   l->append(base::StringPrintf("<VideoCaptureFormat> %s",
  81                                media::VideoCaptureFormat::ToString(p).c_str()));
  82 }
  83
  84 }