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Diffstat (limited to 'ppapi/c/dev/ppb_audio_input_dev.h')
-rw-r--r-- | ppapi/c/dev/ppb_audio_input_dev.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/ppapi/c/dev/ppb_audio_input_dev.h b/ppapi/c/dev/ppb_audio_input_dev.h new file mode 100644 index 0000000..ed9e098 --- /dev/null +++ b/ppapi/c/dev/ppb_audio_input_dev.h @@ -0,0 +1,112 @@ +/* Copyright (c) 2011 The Chromium Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* From dev/ppb_audio_input_dev.idl modified Mon Nov 14 17:58:16 2011. */ + +#ifndef PPAPI_C_DEV_PPB_AUDIO_INPUT_DEV_H_ +#define PPAPI_C_DEV_PPB_AUDIO_INPUT_DEV_H_ + +#include "ppapi/c/pp_bool.h" +#include "ppapi/c/pp_instance.h" +#include "ppapi/c/pp_macros.h" +#include "ppapi/c/pp_resource.h" +#include "ppapi/c/pp_stdint.h" + +#define PPB_AUDIO_INPUT_DEV_INTERFACE_0_1 "PPB_AudioInput(Dev);0.1" +#define PPB_AUDIO_INPUT_DEV_INTERFACE PPB_AUDIO_INPUT_DEV_INTERFACE_0_1 + +/** + * @file + * This file defines the <code>PPB_AudioInput_Dev</code> interface, which + * provides realtime audio input capture. + */ + + +/** + * @addtogroup Typedefs + * @{ + */ +/** + * <code>PPB_AudioInput_Callback</code> defines the type of an audio callback + * function used to provide the audio buffer with data. This callback will be + * called on a separate thread to the creation thread. + */ +typedef void (*PPB_AudioInput_Callback)(void* sample_buffer, + uint32_t buffer_size_in_bytes, + void* user_data); +/** + * @} + */ + +/** + * @addtogroup Interfaces + * @{ + */ +/** + * The <code>PPB_AudioInput_Dev</code> interface contains pointers to several + * functions for handling audio input resources. + */ +struct PPB_AudioInput_Dev { + /** + * Create is a pointer to a function that creates an audio input resource. + * No sound will be captured until StartCapture() is called. + */ + PP_Resource (*Create)(PP_Instance instance, + PP_Resource config, + PPB_AudioInput_Callback audio_input_callback, + void* user_data); + /** + * IsAudioInput is a pointer to a function that determines if the given + * resource is an audio input resource. + * + * @param[in] resource A PP_Resource containing a resource. + * + * @return A PP_BOOL containing containing PP_TRUE if the given resource is + * an audio input resource, otherwise PP_FALSE. + */ + PP_Bool (*IsAudioInput)(PP_Resource audio_input); + /** + * GetCurrrentConfig() returns an audio config resource for the given audio + * resource. + * + * @param[in] config A <code>PP_Resource</code> corresponding to an audio + * resource. + * + * @return A <code>PP_Resource</code> containing the audio config resource if + * successful. + */ + PP_Resource (*GetCurrentConfig)(PP_Resource audio_input); + /** + * StartCapture() starts the capture of the audio input resource and begins + * periodically calling the callback. + * + * @param[in] config A <code>PP_Resource</code> corresponding to an audio + * input resource. + * + * @return A <code>PP_Bool</code> containing <code>PP_TRUE</code> if + * successful, otherwise <code>PP_FALSE</code>. Also returns + * <code>PP_TRUE</code> (and be a no-op) if called while callback is already + * in progress. + */ + PP_Bool (*StartCapture)(PP_Resource audio_input); + /** + * StopCapture is a pointer to a function that stops the capture of + * the audio input resource. + * + * @param[in] config A PP_Resource containing the audio input resource. + * + * @return A PP_BOOL containing PP_TRUE if successful, otherwise PP_FALSE. + * Also returns PP_TRUE (and is a no-op) if called while capture is already + * stopped. If a buffer is being captured, StopCapture will block until the + * call completes. + */ + PP_Bool (*StopCapture)(PP_Resource audio_input); +}; +/** + * @} + */ + +#endif /* PPAPI_C_DEV_PPB_AUDIO_INPUT_DEV_H_ */ + |