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      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 // IPC messages for the media streaming.
      6 // Multiply-included message file, hence no include guard.
      7 
      8 #include <string>
      9 
     10 #include "content/common/content_export.h"
     11 #include "content/common/media/media_stream_options.h"
     12 #include "ipc/ipc_message_macros.h"
     13 #include "url/gurl.h"
     14 
     15 #undef IPC_MESSAGE_EXPORT
     16 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
     17 #define IPC_MESSAGE_START MediaStreamMsgStart
     18 
     19 IPC_ENUM_TRAITS_MAX_VALUE(content::MediaStreamType,
     20                           content::NUM_MEDIA_TYPES - 1)
     21 
     22 IPC_STRUCT_TRAITS_BEGIN(content::StreamOptions)
     23   IPC_STRUCT_TRAITS_MEMBER(audio_type)
     24   IPC_STRUCT_TRAITS_MEMBER(audio_device_id)
     25   IPC_STRUCT_TRAITS_MEMBER(video_type)
     26   IPC_STRUCT_TRAITS_MEMBER(video_device_id)
     27 IPC_STRUCT_TRAITS_END()
     28 
     29 IPC_STRUCT_TRAITS_BEGIN(content::StreamDeviceInfo)
     30   IPC_STRUCT_TRAITS_MEMBER(device.type)
     31   IPC_STRUCT_TRAITS_MEMBER(device.name)
     32   IPC_STRUCT_TRAITS_MEMBER(device.id)
     33   IPC_STRUCT_TRAITS_MEMBER(device.sample_rate)
     34   IPC_STRUCT_TRAITS_MEMBER(device.channel_layout)
     35   IPC_STRUCT_TRAITS_MEMBER(in_use)
     36   IPC_STRUCT_TRAITS_MEMBER(session_id)
     37 IPC_STRUCT_TRAITS_END()
     38 
     39 // Message sent from the browser to the renderer
     40 
     41 // The browser has generated a stream successfully.
     42 IPC_MESSAGE_ROUTED4(MediaStreamMsg_StreamGenerated,
     43                     int /* request id */,
     44                     std::string /* label */,
     45                     content::StreamDeviceInfoArray /* audio_device_list */,
     46                     content::StreamDeviceInfoArray /* video_device_list */)
     47 
     48 // The browser has failed to generate a stream.
     49 IPC_MESSAGE_ROUTED1(MediaStreamMsg_StreamGenerationFailed,
     50                     int /* request id */)
     51 
     52 // The browser requests to stop streaming.
     53 // Note that this differs from MediaStreamHostMsg_StopGeneratedStream below
     54 // which is a request from the renderer.
     55 IPC_MESSAGE_ROUTED1(MediaStreamMsg_StopGeneratedStream,
     56                     std::string /* label */)
     57 
     58 // The browser has enumerated devices successfully.
     59 // Used by Pepper.
     60 // TODO(vrk,wjia): Move this to pepper code.
     61 IPC_MESSAGE_ROUTED3(MediaStreamMsg_DevicesEnumerated,
     62                     int /* request id */,
     63                     std::string /* label */,
     64                     content::StreamDeviceInfoArray /* device_list */)
     65 
     66 // The browser has failed to enumerate devices.
     67 IPC_MESSAGE_ROUTED1(MediaStreamMsg_DevicesEnumerationFailed,
     68                     int /* request id */)
     69 
     70 // TODO(wjia): should DeviceOpen* messages be merged with
     71 // StreamGenerat* ones?
     72 // The browser has opened a device successfully.
     73 IPC_MESSAGE_ROUTED3(MediaStreamMsg_DeviceOpened,
     74                     int /* request id */,
     75                     std::string /* label */,
     76                     content::StreamDeviceInfo /* the device */)
     77 
     78 // The browser has failed to open a device.
     79 IPC_MESSAGE_ROUTED1(MediaStreamMsg_DeviceOpenFailed,
     80                     int /* request id */)
     81 
     82 // Response to enumerate devices request.
     83 IPC_MESSAGE_CONTROL2(MediaStreamMsg_GetSourcesACK,
     84                      int /* request id */,
     85                      content::StreamDeviceInfoArray /* device_list */)
     86 
     87 // Messages sent from the renderer to the browser.
     88 
     89 // Request a new media stream.
     90 IPC_MESSAGE_CONTROL4(MediaStreamHostMsg_GenerateStream,
     91                      int /* render view id */,
     92                      int /* request id */,
     93                      content::StreamOptions /* components */,
     94                      GURL /* security origin */)
     95 
     96 // Request to cancel the request for a new media stream.
     97 IPC_MESSAGE_CONTROL2(MediaStreamHostMsg_CancelGenerateStream,
     98                      int /* render view id */,
     99                      int /* request id */)
    100 
    101 // Request to stop streaming from the media stream.
    102 IPC_MESSAGE_CONTROL2(MediaStreamHostMsg_StopGeneratedStream,
    103                      int /* render view id */,
    104                      std::string /* label */)
    105 
    106 // Request to enumerate devices.
    107 // Used by Pepper.
    108 // TODO(vrk,wjia): Move this to pepper code.
    109 IPC_MESSAGE_CONTROL4(MediaStreamHostMsg_EnumerateDevices,
    110                      int /* render view id */,
    111                      int /* request id */,
    112                      content::MediaStreamType /* type */,
    113                      GURL /* security origin */)
    114 
    115 // Request to open the device.
    116 IPC_MESSAGE_CONTROL5(MediaStreamHostMsg_OpenDevice,
    117                      int /* render view id */,
    118                      int /* request id */,
    119                      std::string /* device_id */,
    120                      content::MediaStreamType /* type */,
    121                      GURL /* security origin */)
    122 
    123 // Request to enumerate devices.
    124 IPC_MESSAGE_CONTROL2(MediaStreamHostMsg_GetSources,
    125                      int /* request id */,
    126                      GURL /* origin */)
    127