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/base/video_capture_types.h"
  12 #include "media/base/video_frame.h"
  13
  14 #undef IPC_MESSAGE_EXPORT
  15 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
  16 #define IPC_MESSAGE_START VideoCaptureMsgStart
  17
  18 IPC_ENUM_TRAITS_MAX_VALUE(content::VideoCaptureState,
  19                           content::VIDEO_CAPTURE_STATE_LAST)
  20 IPC_ENUM_TRAITS_MAX_VALUE(media::ResolutionChangePolicy,
  21                           media::RESOLUTION_POLICY_LAST)
  22 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoPixelFormat, media::PIXEL_FORMAT_MAX)
  23 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoFrame::StorageType,
  24                           media::VideoFrame::STORAGE_LAST)
  25 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoCapturePixelFormat,
  26                           media::VIDEO_CAPTURE_PIXEL_FORMAT_MAX)
  27 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoPixelStorage, media::PIXEL_STORAGE_MAX)
  28
  29 IPC_STRUCT_TRAITS_BEGIN(media::VideoCaptureParams)
  30   IPC_STRUCT_TRAITS_MEMBER(requested_format)
  31   IPC_STRUCT_TRAITS_MEMBER(resolution_change_policy)
  32 IPC_STRUCT_TRAITS_END()
  33
  34 IPC_STRUCT_BEGIN(VideoCaptureMsg_BufferReady_Params)
  35   IPC_STRUCT_MEMBER(int, device_id)
  36   IPC_STRUCT_MEMBER(int, buffer_id)
  37   IPC_STRUCT_MEMBER(base::TimeTicks, timestamp)
  38   IPC_STRUCT_MEMBER(base::DictionaryValue, metadata)
  39   IPC_STRUCT_MEMBER(media::VideoPixelFormat, pixel_format)
  40   IPC_STRUCT_MEMBER(media::VideoFrame::StorageType, storage_type)
  41   IPC_STRUCT_MEMBER(gfx::Size, coded_size)
  42   IPC_STRUCT_MEMBER(gfx::Rect, visible_rect)
  43   IPC_STRUCT_MEMBER(gpu::MailboxHolder, mailbox_holder)
  44 IPC_STRUCT_END()
  45
  46 // TODO(nick): device_id in these messages is basically just a route_id. We
  47 // should shift to IPC_MESSAGE_ROUTED and use MessageRouter in the filter impls.
  48
  49 // Notify the renderer process about the state update such as
  50 // Start/Pause/Stop.
  51 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_StateChanged,
  52                      int /* device id */,
  53                      content::VideoCaptureState /* new state */)
  54
  55 // Tell the renderer process that a new buffer is allocated for video capture.
  56 IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewBuffer,
  57                      int /* device id */,
  58                      base::SharedMemoryHandle /* handle */,
  59                      int /* length */,
  60                      int /* buffer_id */)
  61
  62 // Tell the renderer process that it should release a buffer previously
  63 // allocated by VideoCaptureMsg_NewBuffer.
  64 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_FreeBuffer,
  65                      int /* device id */,
  66                      int /* buffer_id */)
  67
  68 // Tell the renderer process that a Buffer is available from video capture, and
  69 // send the associated VideoFrame constituient parts as IPC parameters.
  70 IPC_MESSAGE_CONTROL1(VideoCaptureMsg_BufferReady,
  71                      VideoCaptureMsg_BufferReady_Params)
  72
  73 // Notify the renderer about a device's supported formats; this is a response
  74 // to a VideoCaptureHostMsg_GetDeviceSupportedFormats request.
  75 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceSupportedFormatsEnumerated,
  76                      int /* device_id */,
  77                      media::VideoCaptureFormats /* supported_formats */)
  78
  79 // Notify the renderer about a device's format(s) in use; this is a response
  80 // to a VideoCaptureHostMsg_GetDeviceFormatInUse request.
  81 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceFormatsInUseReceived,
  82                      int /* device_id */,
  83                      media::VideoCaptureFormats /* formats_in_use */)
  84
  85 // Start a video capture as |device_id|, a new id picked by the renderer
  86 // process. The session to be started is determined by |params.session_id|.
  87 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_Start,
  88                      int /* device_id */,
  89                      media::VideoCaptureSessionId, /* session_id */
  90                      media::VideoCaptureParams /* params */)
  91
  92 // Pause the video capture specified by |device_id|.
  93 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Pause,
  94                      int /* device_id */)
  95
  96 // Resume the video capture specified by |device_id|, |session_id| and
  97 // |params|.
  98 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_Resume,
  99                      int, /* device_id */
 100                      media::VideoCaptureSessionId, /* session_id */
 101                      media::VideoCaptureParams /* params */)
 102
 103 // Close the video capture specified by |device_id|.
 104 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Stop,
 105                      int /* device_id */)
 106
 107 // Tell the browser process that the renderer has finished reading from
 108 // a buffer previously delivered by VideoCaptureMsg_BufferReady.
 109 IPC_MESSAGE_CONTROL4(VideoCaptureHostMsg_BufferReady,
 110                      int /* device_id */,
 111                      int /* buffer_id */,
 112                      uint32 /* syncpoint */,
 113                      double /* consumer_resource_utilization */)
 114
 115 // Get the formats supported by a device referenced by |capture_session_id|.
 116 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceSupportedFormats,
 117                      int /* device_id */,
 118                      media::VideoCaptureSessionId /* session_id */)
 119
 120 // Get the format(s) in use by a device referenced by |capture_session_id|.
 121 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceFormatsInUse,
 122                      int /* device_id */,
 123                      media::VideoCaptureSessionId /* session_id */)