ppapi/c/dev/ppb_device_ref_dev.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
   6 /* From dev/ppb_device_ref_dev.idl modified Wed Nov 07 13:28:37 2012. */
   7
   8 #ifndef PPAPI_C_DEV_PPB_DEVICE_REF_DEV_H_
   9 #define PPAPI_C_DEV_PPB_DEVICE_REF_DEV_H_
  10
  11 #include "ppapi/c/pp_bool.h"
  12 #include "ppapi/c/pp_macros.h"
  13 #include "ppapi/c/pp_resource.h"
  14 #include "ppapi/c/pp_stdint.h"
  15 #include "ppapi/c/pp_var.h"
  16
  17 #define PPB_DEVICEREF_DEV_INTERFACE_0_1 "PPB_DeviceRef(Dev);0.1"
  18 #define PPB_DEVICEREF_DEV_INTERFACE PPB_DEVICEREF_DEV_INTERFACE_0_1
  19
  20 /**
  21  * @file
  22  * This file defines the <code>PPB_DeviceRef_Dev</code> interface.
  23  */
  24
  25
  26 /**
  27  * @addtogroup Typedefs
  28  * @{
  29  */
  30 /**
  31  * Defines the callback type to receive device change notifications for
  32  * <code>PPB_AudioInput_Dev.MonitorDeviceChange()</code> and
  33  * <code>PPB_VideoCapture_Dev.MonitorDeviceChange()</code>.
  34  *
  35  * @param[inout] user_data The opaque pointer that the caller passed into
  36  * <code>MonitorDeviceChange()</code>.
  37  * @param[in] device_count How many devices in the array.
  38  * @param[in] devices An array of <code>PPB_DeviceRef_Dev</code>. Please note
  39  * that the ref count of the elements is not increased on behalf of the plugin.
  40  */
  41 typedef void (*PP_MonitorDeviceChangeCallback)(void* user_data,
  42                                                uint32_t device_count,
  43                                                const PP_Resource devices[]);
  44 /**
  45  * @}
  46  */
  47
  48 /**
  49  * @addtogroup Enums
  50  * @{
  51  */
  52 /**
  53  * Device types.
  54  */
  55 typedef enum {
  56   PP_DEVICETYPE_DEV_INVALID = 0,
  57   PP_DEVICETYPE_DEV_AUDIOCAPTURE = 1,
  58   PP_DEVICETYPE_DEV_VIDEOCAPTURE = 2
  59 } PP_DeviceType_Dev;
  60 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_DeviceType_Dev, 4);
  61 /**
  62  * @}
  63  */
  64
  65 /**
  66  * @addtogroup Interfaces
  67  * @{
  68  */
  69 struct PPB_DeviceRef_Dev_0_1 {
  70   /**
  71    * Determines if the provided resource is a device reference.
  72    *
  73    * @param[in] resource A <code>PP_Resource</code> corresponding to a generic
  74    * resource.
  75    *
  76    * @return A <code>PP_Bool</code> that is <code>PP_TRUE</code> if the given
  77    * resource is a device reference, otherwise <code>PP_FALSE</code>.
  78    */
  79   PP_Bool (*IsDeviceRef)(PP_Resource resource);
  80   /**
  81    * Gets the device type.
  82    *
  83    * @param[in] device_ref A <code>PP_Resource</code> corresponding to a device
  84    * reference.
  85    *
  86    * @return A <code>PP_DeviceType_Dev</code> value.
  87    */
  88   PP_DeviceType_Dev (*GetType)(PP_Resource device_ref);
  89   /**
  90    * Gets the device name.
  91    *
  92    * @param[in] device_ref A <code>PP_Resource</code> corresponding to a device
  93    * reference.
  94    *
  95    * @return A <code>PP_Var</code> of type <code>PP_VARTYPE_STRING</code>
  96    * containing the name of the device if successful; a <code>PP_Var</code> of
  97    * type <code>PP_VARTYPE_UNDEFINED</code> if failed.
  98    */
  99   struct PP_Var (*GetName)(PP_Resource device_ref);
 100 };
 101
 102 typedef struct PPB_DeviceRef_Dev_0_1 PPB_DeviceRef_Dev;
 103 /**
 104  * @}
 105  */
 106
 107 #endif  /* PPAPI_C_DEV_PPB_DEVICE_REF_DEV_H_ */
 108