content/common/media/video_capture_messages.h

   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 "base/memory/shared_memory.h"
   6 #include "content/common/content_export.h"
   7 #include "content/common/media/video_capture.h"
   8 #include "content/public/common/common_param_traits.h"
   9 #include "gpu/command_buffer/common/mailbox_holder.h"
  10 #include "ipc/ipc_message_macros.h"
  11 #include "media/video/capture/video_capture_types.h"
  12
  13 #undef IPC_MESSAGE_EXPORT
  14 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
  15 #define IPC_MESSAGE_START VideoCaptureMsgStart
  16
  17 IPC_ENUM_TRAITS_MAX_VALUE(content::VideoCaptureState,
  18                           content::VIDEO_CAPTURE_STATE_LAST)
  19
  20 IPC_ENUM_TRAITS_MAX_VALUE(media::ResolutionChangePolicy,
  21                           media::RESOLUTION_POLICY_LAST)
  22
  23 IPC_STRUCT_TRAITS_BEGIN(media::VideoCaptureParams)
  24   IPC_STRUCT_TRAITS_MEMBER(requested_format)
  25   IPC_STRUCT_TRAITS_MEMBER(resolution_change_policy)
  26 IPC_STRUCT_TRAITS_END()
  27
  28 // TODO(nick): device_id in these messages is basically just a route_id. We
  29 // should shift to IPC_MESSAGE_ROUTED and use MessageRouter in the filter impls.
  30
  31 // Notify the renderer process about the state update such as
  32 // Start/Pause/Stop.
  33 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_StateChanged,
  34                      int /* device id */,
  35                      content::VideoCaptureState /* new state */)
  36
  37 // Tell the renderer process that a new buffer is allocated for video capture.
  38 IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewBuffer,
  39                      int /* device id */,
  40                      base::SharedMemoryHandle /* handle */,
  41                      int /* length */,
  42                      int /* buffer_id */)
  43
  44 // Tell the renderer process that it should release a buffer previously
  45 // allocated by VideoCaptureMsg_NewBuffer.
  46 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_FreeBuffer,
  47                      int /* device id */,
  48                      int /* buffer_id */)
  49
  50 // Tell the renderer process that a buffer is available from video capture.
  51 IPC_MESSAGE_CONTROL5(VideoCaptureMsg_BufferReady,
  52                      int /* device id */,
  53                      int /* buffer_id */,
  54                      media::VideoCaptureFormat /* format */,
  55                      gfx::Rect /* visible_rect */,
  56                      base::TimeTicks /* timestamp */)
  57
  58 // Tell the renderer process that a texture mailbox buffer is available from
  59 // video capture.
  60 IPC_MESSAGE_CONTROL5(VideoCaptureMsg_MailboxBufferReady,
  61                      int /* device_id */,
  62                      int /* buffer_id */,
  63                      gpu::MailboxHolder /* mailbox_holder */,
  64                      media::VideoCaptureFormat /* format */,
  65                      base::TimeTicks /* timestamp */)
  66
  67 // Notify the renderer about a device's supported formats; this is a response
  68 // to a VideoCaptureHostMsg_GetDeviceSupportedFormats request.
  69 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceSupportedFormatsEnumerated,
  70                      int /* device_id */,
  71                      media::VideoCaptureFormats /* supported_formats */)
  72
  73 // Notify the renderer about a device's format(s) in use; this is a response
  74 // to a VideoCaptureHostMsg_GetDeviceFormatInUse request.
  75 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceFormatsInUseReceived,
  76                      int /* device_id */,
  77                      media::VideoCaptureFormats /* formats_in_use */)
  78
  79 // Start a video capture as |device_id|, a new id picked by the renderer
  80 // process. The session to be started is determined by |params.session_id|.
  81 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_Start,
  82                      int /* device_id */,
  83                      media::VideoCaptureSessionId, /* session_id */
  84                      media::VideoCaptureParams /* params */)
  85
  86 // Pause the video capture specified by |device_id|.
  87 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Pause,
  88                      int /* device_id */)
  89
  90 // Resume the video capture specified by |device_id|, |session_id| and
  91 // |params|.
  92 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_Resume,
  93                      int, /* device_id */
  94                      media::VideoCaptureSessionId, /* session_id */
  95                      media::VideoCaptureParams /* params */)
  96
  97 // Close the video capture specified by |device_id|.
  98 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Stop,
  99                      int /* device_id */)
 100
 101 // Tell the browser process that the renderer has finished reading from
 102 // a buffer previously delivered by VideoCaptureMsg_BufferReady.
 103 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_BufferReady,
 104                      int /* device_id */,
 105                      int /* buffer_id */,
 106                      uint32 /* syncpoint */)
 107
 108 // Get the formats supported by a device referenced by |capture_session_id|.
 109 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceSupportedFormats,
 110                      int /* device_id */,
 111                      media::VideoCaptureSessionId /* session_id */)
 112
 113 // Get the format(s) in use by a device referenced by |capture_session_id|.
 114 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceFormatsInUse,
 115                      int /* device_id */,
 116                      media::VideoCaptureSessionId /* session_id */)