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 */) 117
