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 #include "ui/gfx/gpu_memory_buffer.h"
  14
  15 #undef IPC_MESSAGE_EXPORT
  16 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
  17 #define IPC_MESSAGE_START VideoCaptureMsgStart
  18
  19 IPC_ENUM_TRAITS_MAX_VALUE(content::VideoCaptureState,
  20                           content::VIDEO_CAPTURE_STATE_LAST)
  21 IPC_ENUM_TRAITS_MAX_VALUE(media::ResolutionChangePolicy,
  22                           media::RESOLUTION_POLICY_LAST)
  23 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoPixelFormat, media::PIXEL_FORMAT_MAX)
  24 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoFrame::StorageType,
  25                           media::VideoFrame::STORAGE_LAST)
  26 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoPixelStorage, media::PIXEL_STORAGE_MAX)
  27 IPC_ENUM_TRAITS_MAX_VALUE(media::PowerLineFrequency,
  28                           media::PowerLineFrequency::FREQUENCY_MAX)
  29
  30 IPC_STRUCT_TRAITS_BEGIN(media::VideoCaptureParams)
  31   IPC_STRUCT_TRAITS_MEMBER(requested_format)
  32   IPC_STRUCT_TRAITS_MEMBER(resolution_change_policy)
  33   IPC_STRUCT_TRAITS_MEMBER(power_line_frequency)
  34 IPC_STRUCT_TRAITS_END()
  35
  36 IPC_STRUCT_BEGIN(VideoCaptureMsg_BufferReady_Params)
  37   IPC_STRUCT_MEMBER(int, device_id)
  38   IPC_STRUCT_MEMBER(int, buffer_id)
  39   IPC_STRUCT_MEMBER(base::TimeTicks, timestamp)
  40   IPC_STRUCT_MEMBER(base::DictionaryValue, metadata)
  41   IPC_STRUCT_MEMBER(media::VideoPixelFormat, pixel_format)
  42   IPC_STRUCT_MEMBER(media::VideoFrame::StorageType, storage_type)
  43   IPC_STRUCT_MEMBER(gfx::Size, coded_size)
  44   IPC_STRUCT_MEMBER(gfx::Rect, visible_rect)
  45   IPC_STRUCT_MEMBER(std::vector<gpu::MailboxHolder>, mailbox_holders)
  46 IPC_STRUCT_END()
  47
  48 // TODO(nick): device_id in these messages is basically just a route_id. We
  49 // should shift to IPC_MESSAGE_ROUTED and use MessageRouter in the filter impls.
  50
  51 // Notify the renderer process about the state update such as
  52 // Start/Pause/Stop.
  53 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_StateChanged,
  54                      int /* device id */,
  55                      content::VideoCaptureState /* new state */)
  56
  57 // Tell the renderer process that a new buffer is allocated for video capture.
  58 IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewBuffer,
  59                      int /* device id */,
  60                      base::SharedMemoryHandle /* handle */,
  61                      int /* length */,
  62                      int /* buffer_id */)
  63
  64 // Tell the renderer process that a new GpuMemoryBuffer backed buffer is
  65 // allocated for video capture.
  66 IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewBuffer2,
  67                      int /* device id */,
  68                      std::vector<gfx::GpuMemoryBufferHandle> /* handles */,
  69                      gfx::Size /* dimensions */,
  70                      int /* buffer_id */)
  71
  72 // Tell the renderer process that it should release a buffer previously
  73 // allocated by VideoCaptureMsg_NewBuffer.
  74 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_FreeBuffer,
  75                      int /* device id */,
  76                      int /* buffer_id */)
  77
  78 // Tell the renderer process that a Buffer is available from video capture, and
  79 // send the associated VideoFrame constituient parts as IPC parameters.
  80 IPC_MESSAGE_CONTROL1(VideoCaptureMsg_BufferReady,
  81                      VideoCaptureMsg_BufferReady_Params)
  82
  83 // Notify the renderer about a device's supported formats; this is a response
  84 // to a VideoCaptureHostMsg_GetDeviceSupportedFormats request.
  85 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceSupportedFormatsEnumerated,
  86                      int /* device_id */,
  87                      media::VideoCaptureFormats /* supported_formats */)
  88
  89 // Notify the renderer about a device's format(s) in use; this is a response
  90 // to a VideoCaptureHostMsg_GetDeviceFormatInUse request.
  91 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceFormatsInUseReceived,
  92                      int /* device_id */,
  93                      media::VideoCaptureFormats /* formats_in_use */)
  94
  95 // Start a video capture as |device_id|, a new id picked by the renderer
  96 // process. The session to be started is determined by |params.session_id|.
  97 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_Start,
  98                      int /* device_id */,
  99                      media::VideoCaptureSessionId, /* session_id */
 100                      media::VideoCaptureParams /* params */)
 101
 102 // Pause the video capture specified by |device_id|.
 103 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Pause,
 104                      int /* device_id */)
 105
 106 // Resume the video capture specified by |device_id|, |session_id| and
 107 // |params|.
 108 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_Resume,
 109                      int, /* device_id */
 110                      media::VideoCaptureSessionId, /* session_id */
 111                      media::VideoCaptureParams /* params */)
 112
 113 // Close the video capture specified by |device_id|.
 114 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Stop,
 115                      int /* device_id */)
 116
 117 // Tell the browser process that the renderer has finished reading from
 118 // a buffer previously delivered by VideoCaptureMsg_BufferReady.
 119 IPC_MESSAGE_CONTROL4(VideoCaptureHostMsg_BufferReady,
 120                      int /* device_id */,
 121                      int /* buffer_id */,
 122                      uint32 /* syncpoint */,
 123                      double /* consumer_resource_utilization */)
 124
 125 // Get the formats supported by a device referenced by |capture_session_id|.
 126 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceSupportedFormats,
 127                      int /* device_id */,
 128                      media::VideoCaptureSessionId /* session_id */)
 129
 130 // Get the format(s) in use by a device referenced by |capture_session_id|.
 131 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceFormatsInUse,
 132                      int /* device_id */,
 133                      media::VideoCaptureSessionId /* session_id */)