diff options
Diffstat (limited to 'stmhal/usbhost/Class/AUDIO/Src/usbh_audio.c')
| -rw-r--r-- | stmhal/usbhost/Class/AUDIO/Src/usbh_audio.c | 1994 |
1 files changed, 0 insertions, 1994 deletions
diff --git a/stmhal/usbhost/Class/AUDIO/Src/usbh_audio.c b/stmhal/usbhost/Class/AUDIO/Src/usbh_audio.c deleted file mode 100644 index b9677b6c2..000000000 --- a/stmhal/usbhost/Class/AUDIO/Src/usbh_audio.c +++ /dev/null @@ -1,1994 +0,0 @@ -/**
- ******************************************************************************
- * @file usbh_audio.c
- * @author MCD Application Team
- * @version V3.0.0
- * @date 18-February-2014
- * @brief This file is the AC Layer Handlers for USB Host AC class.
- *
- ******************************************************************************
- * @attention
- *
- * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
- *
- * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
- * You may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.st.com/software_license_agreement_liberty_v2
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- ******************************************************************************
- */
-
-/* Includes ------------------------------------------------------------------*/
-#include "usbh_audio.h"
-
-/** @addtogroup USBH_LIB
- * @{
- */
-
-/** @addtogroup USBH_CLASS
- * @{
- */
-
-/** @addtogroup USBH_AUDIO_CLASS
- * @{
- */
-
-/** @defgroup USBH_AUDIO_CORE
- * @brief This file includes HID Layer Handlers for USB Host HID class.
- * @{
- */
-
-/** @defgroup USBH_AUDIO_CORE_Private_TypesDefinitions
- * @{
- */
-/**
- * @}
- */
-
-
-/** @defgroup USBH_AUDIO_CORE_Private_Defines
- * @{
- */
-
-/**
- * @}
- */
-
-
-/** @defgroup USBH_AUDIO_CORE_Private_Macros
- * @{
- */
-/**
- * @}
- */
-
-
-/** @defgroup USBH_AUDIO_CORE_Private_Variables
- * @{
- */
-
-/**
- * @}
- */
-
-
-/** @defgroup USBH_AUDIO_CORE_Private_FunctionPrototypes
- * @{
- */
-
-static USBH_StatusTypeDef USBH_AUDIO_InterfaceInit (USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_InterfaceDeInit (USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_Process(USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_SOFProcess(USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_ClassRequest(USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_CSRequest(USBH_HandleTypeDef *phost,
- uint8_t feature,
- uint8_t channel);
-
-static USBH_StatusTypeDef USBH_AUDIO_HandleCSRequest(USBH_HandleTypeDef *phost);
-
-static USBH_StatusTypeDef USBH_AUDIO_FindAudioStreamingIN(USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_FindAudioStreamingOUT(USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_FindHIDControl(USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_ParseCSDescriptors(USBH_HandleTypeDef *phost);
-
-static USBH_StatusTypeDef USBH_AUDIO_BuildHeadphonePath(USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_BuildMicrophonePath(USBH_HandleTypeDef *phost);
-int32_t USBH_AUDIO_FindLinkedUnitIN(USBH_HandleTypeDef *phost, uint8_t UnitID);
-int32_t USBH_AUDIO_FindLinkedUnitOUT(USBH_HandleTypeDef *phost, uint8_t UnitID);
-
-
-
-static USBH_StatusTypeDef ParseCSDescriptors(AUDIO_ClassSpecificDescTypedef *class_desc,
- uint8_t ac_subclass,
- uint8_t *pdesc);
-
-
-static USBH_StatusTypeDef USBH_AUDIO_Transmit (USBH_HandleTypeDef *phost);
-
-
-static USBH_StatusTypeDef USBH_AC_SetCur(USBH_HandleTypeDef *phost,
- uint8_t subtype,
- uint8_t feature,
- uint8_t controlSelector,
- uint8_t channel,
- uint16_t length);
-
-static USBH_StatusTypeDef USBH_AC_GetCur(USBH_HandleTypeDef *phost,
- uint8_t subtype,
- uint8_t feature,
- uint8_t controlSelector,
- uint8_t channel,
- uint16_t length);
-
-static USBH_StatusTypeDef USBH_AC_GetMin(USBH_HandleTypeDef *phost,
- uint8_t subtype,
- uint8_t feature,
- uint8_t controlSelector,
- uint8_t channel,
- uint16_t length);
-
-static USBH_StatusTypeDef USBH_AC_GetMax(USBH_HandleTypeDef *phost,
- uint8_t subtype,
- uint8_t feature,
- uint8_t controlSelector,
- uint8_t channel,
- uint16_t length);
-
-static USBH_StatusTypeDef USBH_AC_GetRes(USBH_HandleTypeDef *phost,
- uint8_t subtype,
- uint8_t feature,
- uint8_t controlSelector,
- uint8_t channel,
- uint16_t length);
-
-static USBH_StatusTypeDef USBH_AUDIO_SetEndpointControls(USBH_HandleTypeDef *phost,
- uint8_t Ep,
- uint8_t *buff);
-
-static USBH_StatusTypeDef AUDIO_SetVolume (USBH_HandleTypeDef *phost, uint8_t feature, uint8_t channel, uint16_t volume);
-
-static USBH_StatusTypeDef USBH_AUDIO_InputStream (USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_OutputStream (USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_Control (USBH_HandleTypeDef *phost);
-static USBH_StatusTypeDef USBH_AUDIO_SetControlAttribute (USBH_HandleTypeDef *phost, uint8_t attrib);
-static int32_t USBH_AUDIO_FindLinkedUnit(USBH_HandleTypeDef *phost, uint8_t UnitID);
-
-USBH_ClassTypeDef AUDIO_Class =
-{
- "AUDIO",
- AC_CLASS,
- USBH_AUDIO_InterfaceInit,
- USBH_AUDIO_InterfaceDeInit,
- USBH_AUDIO_ClassRequest,
- USBH_AUDIO_Process,
- USBH_AUDIO_SOFProcess,
- NULL,
-};
-
-/**
- * @}
- */
-
-/** @defgroup USBH_AUDIO_CORE_Private_Functions
- * @{
- */
-
-/**
- * @brief USBH_AUDIO_InterfaceInit
- * The function init the Audio class.
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_InterfaceInit (USBH_HandleTypeDef *phost)
-{
- USBH_StatusTypeDef status = USBH_FAIL ;
- USBH_StatusTypeDef out_status, in_status ;
- AUDIO_HandleTypeDef *AUDIO_Handle;
- uint8_t interface, index;
- uint16_t ep_size_out = 0;
- uint16_t ep_size_in = 0;
-
- interface = USBH_FindInterface(phost, AC_CLASS, USB_SUBCLASS_AUDIOCONTROL, 0x00);
-
- if(interface == 0xFF) /* Not Valid Interface */
- {
- USBH_DbgLog ("Cannot Find the interface for %s class.", phost->pActiveClass->Name);
- status = USBH_FAIL;
- }
- else
- {
-
-
- phost->pActiveClass->pData = (AUDIO_HandleTypeDef *)USBH_malloc (sizeof(AUDIO_HandleTypeDef));
- AUDIO_Handle = phost->pActiveClass->pData;
- USBH_memset(AUDIO_Handle, 0, sizeof(AUDIO_HandleTypeDef));
-
-
- /* 1st Step: Find Audio Interfaces */
- out_status = USBH_AUDIO_FindAudioStreamingIN (phost);
-
- in_status = USBH_AUDIO_FindAudioStreamingOUT(phost);
-
- if((out_status == USBH_FAIL) && (in_status == USBH_FAIL))
- {
- USBH_DbgLog ("%s class configuration not supported.", phost->pActiveClass->Name);
- }
- else
- {
- /* 2nd Step: Select Audio Streaming Interfaces with largest endpoint size : default behavior*/
- for (index = 0; index < AUDIO_MAX_AUDIO_STD_INTERFACE; index ++)
- {
- if( AUDIO_Handle->stream_out[index].valid == 1)
- {
- if(ep_size_out < AUDIO_Handle->stream_out[index].EpSize)
- {
- ep_size_out = AUDIO_Handle->stream_out[index].EpSize;
- AUDIO_Handle->headphone.interface = AUDIO_Handle->stream_out[index].interface;
- AUDIO_Handle->headphone.AltSettings = AUDIO_Handle->stream_out[index].AltSettings;
- AUDIO_Handle->headphone.Ep = AUDIO_Handle->stream_out[index].Ep;
- AUDIO_Handle->headphone.EpSize = AUDIO_Handle->stream_out[index].EpSize;
- AUDIO_Handle->headphone.Poll = AUDIO_Handle->stream_out[index].Poll;
- AUDIO_Handle->headphone.supported = 1;
- }
- }
-
- if( AUDIO_Handle->stream_in[index].valid == 1)
- {
- if(ep_size_in < AUDIO_Handle->stream_in[index].EpSize)
- {
- ep_size_in = AUDIO_Handle->stream_in[index].EpSize;
- AUDIO_Handle->microphone.interface = AUDIO_Handle->stream_in[index].interface;
- AUDIO_Handle->microphone.AltSettings = AUDIO_Handle->stream_in[index].AltSettings;
- AUDIO_Handle->microphone.Ep = AUDIO_Handle->stream_in[index].Ep;
- AUDIO_Handle->microphone.EpSize = AUDIO_Handle->stream_in[index].EpSize;
- AUDIO_Handle->microphone.Poll = AUDIO_Handle->stream_out[index].Poll;
- AUDIO_Handle->microphone.supported = 1;
- }
- }
- }
-
- if(USBH_AUDIO_FindHIDControl(phost) == USBH_OK)
- {
- AUDIO_Handle->control.supported = 1;
- }
-
- /* 3rd Step: Find and Parse Audio interfaces */
- USBH_AUDIO_ParseCSDescriptors (phost);
-
-
- /* 4th Step: Open the Audio streaming pipes*/
- if(AUDIO_Handle->headphone.supported == 1)
- {
- USBH_AUDIO_BuildHeadphonePath (phost);
-
- AUDIO_Handle->headphone.Pipe = USBH_AllocPipe(phost, AUDIO_Handle->headphone.Ep);
-
- /* Open pipe for IN endpoint */
- USBH_OpenPipe (phost,
- AUDIO_Handle->headphone.Pipe,
- AUDIO_Handle->headphone.Ep,
- phost->device.address,
- phost->device.speed,
- USB_EP_TYPE_ISOC,
- AUDIO_Handle->headphone.EpSize);
-
- USBH_LL_SetToggle (phost, AUDIO_Handle->headphone.Pipe, 0);
-
- }
-
- if(AUDIO_Handle->microphone.supported == 1)
- {
- USBH_AUDIO_BuildMicrophonePath (phost);
- AUDIO_Handle->microphone.Pipe = USBH_AllocPipe(phost, AUDIO_Handle->microphone.Ep);
-
- /* Open pipe for IN endpoint */
- USBH_OpenPipe (phost,
- AUDIO_Handle->microphone.Pipe,
- AUDIO_Handle->microphone.Ep,
- phost->device.address,
- phost->device.speed,
- USB_EP_TYPE_ISOC,
- AUDIO_Handle->microphone.EpSize);
-
- USBH_LL_SetToggle (phost, AUDIO_Handle->microphone.Pipe, 0);
- }
-
- if(AUDIO_Handle->control.supported == 1)
- {
- AUDIO_Handle->control.Pipe = USBH_AllocPipe(phost, AUDIO_Handle->control.Ep);
-
- /* Open pipe for IN endpoint */
- USBH_OpenPipe (phost,
- AUDIO_Handle->control.Pipe,
- AUDIO_Handle->control.Ep,
- phost->device.address,
- phost->device.speed,
- USB_EP_TYPE_INTR,
- AUDIO_Handle->control.EpSize);
-
- USBH_LL_SetToggle (phost, AUDIO_Handle->control.Pipe, 0);
-
- }
-
- AUDIO_Handle->req_state = AUDIO_REQ_INIT;
- AUDIO_Handle->control_state = AUDIO_CONTROL_INIT;
-
- status = USBH_OK;
- }
- }
- return status;
-}
-
-
-
-/**
- * @brief USBH_AUDIO_InterfaceDeInit
- * The function DeInit the Pipes used for the Audio class.
- * @param phost: Host handle
- * @retval USBH Status
- */
-USBH_StatusTypeDef USBH_AUDIO_InterfaceDeInit (USBH_HandleTypeDef *phost)
-{
- AUDIO_HandleTypeDef *AUDIO_Handle = phost->pActiveClass->pData;
-
- if(AUDIO_Handle->microphone.Pipe != 0x00)
- {
- USBH_ClosePipe (phost, AUDIO_Handle->microphone.Pipe);
- USBH_FreePipe (phost, AUDIO_Handle->microphone.Pipe);
- AUDIO_Handle->microphone.Pipe = 0; /* Reset the pipe as Free */
- }
-
- if( AUDIO_Handle->headphone.Pipe != 0x00)
- {
- USBH_ClosePipe(phost, AUDIO_Handle->headphone.Pipe);
- USBH_FreePipe (phost, AUDIO_Handle->headphone.Pipe);
- AUDIO_Handle->headphone.Pipe = 0; /* Reset the pipe as Free */
- }
-
- if( AUDIO_Handle->control.Pipe != 0x00)
- {
- USBH_ClosePipe(phost, AUDIO_Handle->control.Pipe);
- USBH_FreePipe (phost, AUDIO_Handle->control.Pipe);
- AUDIO_Handle->control.Pipe = 0; /* Reset the pipe as Free */
- }
-
- if(phost->pActiveClass->pData)
- {
- USBH_free (phost->pActiveClass->pData);
- phost->pActiveClass->pData = 0;
- }
- return USBH_OK ;
-}
-
-/**
- * @brief USBH_AUDIO_ClassRequest
- * The function is responsible for handling Standard requests
- * for Audio class.
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_ClassRequest(USBH_HandleTypeDef *phost)
-{
- AUDIO_HandleTypeDef *AUDIO_Handle = phost->pActiveClass->pData;
- USBH_StatusTypeDef status = USBH_BUSY;
- USBH_StatusTypeDef req_status = USBH_BUSY;
-
- /* Switch AUDIO REQ state machine */
- switch (AUDIO_Handle->req_state)
- {
- case AUDIO_REQ_INIT:
- case AUDIO_REQ_SET_DEFAULT_IN_INTERFACE:
- if(AUDIO_Handle->microphone.supported == 1)
- {
- req_status = USBH_SetInterface(phost,
- AUDIO_Handle->microphone.interface,
- 0);
-
- if(req_status == USBH_OK)
- {
- AUDIO_Handle->req_state = AUDIO_REQ_SET_DEFAULT_OUT_INTERFACE;
- }
-
- }
- else
- {
- AUDIO_Handle->req_state = AUDIO_REQ_SET_DEFAULT_OUT_INTERFACE;
-#if (USBH_USE_OS == 1)
- osMessagePut ( phost->os_event, USBH_URB_EVENT, 0);
-#endif
- }
- break;
-
- case AUDIO_REQ_SET_DEFAULT_OUT_INTERFACE:
- if(AUDIO_Handle->headphone.supported == 1)
- {
- req_status = USBH_SetInterface(phost,
- AUDIO_Handle->headphone.interface,
- 0);
-
- if(req_status == USBH_OK)
- {
- AUDIO_Handle->req_state = AUDIO_REQ_CS_REQUESTS;
- AUDIO_Handle->cs_req_state = AUDIO_REQ_GET_VOLUME;
-
- AUDIO_Handle->temp_feature = AUDIO_Handle->headphone.asociated_feature;
- AUDIO_Handle->temp_channels = AUDIO_Handle->headphone.asociated_channels;
- }
- }
- else
- {
- AUDIO_Handle->req_state = AUDIO_REQ_CS_REQUESTS;
- AUDIO_Handle->cs_req_state = AUDIO_REQ_GET_VOLUME;
-#if (USBH_USE_OS == 1)
- osMessagePut ( phost->os_event, USBH_URB_EVENT, 0);
-#endif
- }
- break;
-
- case AUDIO_REQ_CS_REQUESTS:
- if(USBH_AUDIO_HandleCSRequest (phost) == USBH_OK)
- {
- AUDIO_Handle->req_state = AUDIO_REQ_SET_IN_INTERFACE;
- }
- break;
-
- case AUDIO_REQ_SET_IN_INTERFACE:
- if(AUDIO_Handle->microphone.supported == 1)
- {
- req_status = USBH_SetInterface(phost,
- AUDIO_Handle->microphone.interface,
- AUDIO_Handle->microphone.AltSettings);
-
- if(req_status == USBH_OK)
- {
- AUDIO_Handle->req_state = AUDIO_REQ_SET_OUT_INTERFACE;
- }
- }
- else
- {
- AUDIO_Handle->req_state = AUDIO_REQ_SET_OUT_INTERFACE;
-#if (USBH_USE_OS == 1)
- osMessagePut ( phost->os_event, USBH_URB_EVENT, 0);
-#endif
- }
- break;
- case AUDIO_REQ_SET_OUT_INTERFACE:
- if(AUDIO_Handle->headphone.supported == 1)
- {
- req_status = USBH_SetInterface(phost,
- AUDIO_Handle->headphone.interface,
- AUDIO_Handle->headphone.AltSettings);
-
- if(req_status == USBH_OK)
- {
- AUDIO_Handle->req_state = AUDIO_REQ_IDLE;
- }
-
- }
- else
- {
- AUDIO_Handle->req_state = AUDIO_REQ_IDLE;
-#if (USBH_USE_OS == 1)
- osMessagePut ( phost->os_event, USBH_URB_EVENT, 0);
-#endif
- }
- break;
- case AUDIO_REQ_IDLE:
- AUDIO_Handle->play_state = AUDIO_PLAYBACK_INIT;
- phost->pUser(phost, HOST_USER_CLASS_ACTIVE);
- status = USBH_OK;
-#if (USBH_USE_OS == 1)
- osMessagePut ( phost->os_event, USBH_CLASS_EVENT, 0);
-#endif
- default:
- break;
- }
- return status;
-}
-
-/**
- * @brief USBH_AUDIO_CSRequest
- * The function is responsible for handling AC Specific requests for a specific feature and channel
- * for Audio class.
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_CSRequest(USBH_HandleTypeDef *phost, uint8_t feature, uint8_t channel)
-{
- AUDIO_HandleTypeDef *AUDIO_Handle = phost->pActiveClass->pData;
- USBH_StatusTypeDef status = USBH_BUSY;
- USBH_StatusTypeDef req_status = USBH_BUSY;
-
- /* Switch AUDIO REQ state machine */
- switch (AUDIO_Handle->cs_req_state)
- {
- case AUDIO_REQ_GET_VOLUME:
- req_status = USBH_AC_GetCur(phost,
- UAC_FEATURE_UNIT, /* subtype */
- feature, /* feature */
- VOLUME_CONTROL, /* Selector */
- channel, /* channel */
- 0x02); /* length */
- if(req_status != USBH_BUSY)
- {
- AUDIO_Handle->cs_req_state = AUDIO_REQ_GET_MIN_VOLUME;
- AUDIO_Handle->headphone.attribute.volume = LE16(&(AUDIO_Handle->mem[0]));
- }
- break;
-
- case AUDIO_REQ_GET_MIN_VOLUME:
- req_status = USBH_AC_GetMin(phost,
- UAC_FEATURE_UNIT, /* subtype */
- feature, /* feature */
- VOLUME_CONTROL, /* Selector */
- channel, /* channel */
- 0x02); /* length */
- if(req_status != USBH_BUSY)
- {
- AUDIO_Handle->cs_req_state = AUDIO_REQ_GET_MAX_VOLUME;
- AUDIO_Handle->headphone.attribute.volumeMin = LE16(&AUDIO_Handle->mem[0]);
- }
- break;
-
- case AUDIO_REQ_GET_MAX_VOLUME:
- req_status = USBH_AC_GetMax(phost,
- UAC_FEATURE_UNIT, /* subtype */
- feature, /* feature */
- VOLUME_CONTROL, /* Selector */
- channel, /* channel */
- 0x02); /* length */
- if(req_status != USBH_BUSY)
- {
- AUDIO_Handle->cs_req_state = AUDIO_REQ_GET_RESOLUTION;
- AUDIO_Handle->headphone.attribute.volumeMax = LE16(&AUDIO_Handle->mem[0]);
-
- if (AUDIO_Handle->headphone.attribute.volumeMax < AUDIO_Handle->headphone.attribute.volumeMin)
- {
- AUDIO_Handle->headphone.attribute.volumeMax = 0xFF00;
- }
- }
- break;
-
- case AUDIO_REQ_GET_RESOLUTION:
- req_status = USBH_AC_GetRes(phost,
- UAC_FEATURE_UNIT, /* subtype */
- feature, /* feature */
- VOLUME_CONTROL, /* Selector */
- channel, /* channel */
- 0x02); /* length */
- if(req_status != USBH_BUSY)
- {
- AUDIO_Handle->cs_req_state = AUDIO_REQ_CS_IDLE;
- AUDIO_Handle->headphone.attribute.resolution = LE16(&AUDIO_Handle->mem[0]);
- }
- break;
-
-
- case AUDIO_REQ_CS_IDLE:
- status = USBH_OK;
- default:
- break;
- }
- return status;
-}
-
-/**
- * @brief USBH_AUDIO_HandleCSRequest
- * The function is responsible for handling AC Specific requests for a all features
- * and associated channels for Audio class.
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_HandleCSRequest(USBH_HandleTypeDef *phost)
-{
-
- USBH_StatusTypeDef status = USBH_BUSY;
- USBH_StatusTypeDef cs_status = USBH_BUSY;
- AUDIO_HandleTypeDef *AUDIO_Handle = phost->pActiveClass->pData;
-
- cs_status = USBH_AUDIO_CSRequest(phost,
- AUDIO_Handle->temp_feature,
- AUDIO_Handle->temp_channels);
-
- if(cs_status != USBH_BUSY)
- {
-
- if(AUDIO_Handle->temp_channels == 1)
- {
- AUDIO_Handle->temp_feature = AUDIO_Handle->headphone.asociated_feature;
- AUDIO_Handle->temp_channels = 0;
- status = USBH_OK;
- }
- else
- {
- AUDIO_Handle->temp_channels--;
- }
- AUDIO_Handle->cs_req_state = AUDIO_REQ_GET_VOLUME;
-#if (USBH_USE_OS == 1)
- osMessagePut ( phost->os_event, USBH_URB_EVENT, 0);
-#endif
- }
-
- return status;
-}
-
-/**
- * @brief USBH_AUDIO_Process
- * The function is for managing state machine for Audio data transfers
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_Process (USBH_HandleTypeDef *phost)
-{
- USBH_StatusTypeDef status = USBH_BUSY;
- AUDIO_HandleTypeDef *AUDIO_Handle = phost->pActiveClass->pData;
-
- if(AUDIO_Handle->headphone.supported == 1)
- {
- USBH_AUDIO_OutputStream (phost);
- }
-
- if(AUDIO_Handle->microphone.supported == 1)
- {
- USBH_AUDIO_InputStream (phost);
- }
-
- return status;
-}
-
-/**
- * @brief USBH_AUDIO_SOFProcess
- * The function is for managing the SOF callback
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_SOFProcess (USBH_HandleTypeDef *phost)
-{
- return USBH_OK;
-}
-/**
- * @brief Find IN Audio Streaming interfaces
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_FindAudioStreamingIN(USBH_HandleTypeDef *phost)
-{
- uint8_t interface, alt_settings;
- USBH_StatusTypeDef status = USBH_FAIL ;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- AUDIO_Handle = phost->pActiveClass->pData;
-
- /* Look For AUDIOSTREAMING IN interface */
- alt_settings = 0;
- for (interface = 0; interface < USBH_MAX_NUM_INTERFACES ; interface ++ )
- {
- if((phost->device.CfgDesc.Itf_Desc[interface].bInterfaceClass == AC_CLASS)&&
- (phost->device.CfgDesc.Itf_Desc[interface].bInterfaceSubClass == USB_SUBCLASS_AUDIOSTREAMING))
- {
- if((phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].bEndpointAddress & 0x80)&&
- (phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].wMaxPacketSize > 0))
- {
- AUDIO_Handle->stream_in[alt_settings].Ep = phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].bEndpointAddress;
- AUDIO_Handle->stream_in[alt_settings].EpSize = phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].wMaxPacketSize;
- AUDIO_Handle->stream_in[alt_settings].interface = phost->device.CfgDesc.Itf_Desc[interface].bInterfaceNumber;
- AUDIO_Handle->stream_in[alt_settings].AltSettings = phost->device.CfgDesc.Itf_Desc[interface].bAlternateSetting;
- AUDIO_Handle->stream_in[alt_settings].Poll = phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].bInterval;
- AUDIO_Handle->stream_in[alt_settings].valid = 1;
- alt_settings++;
- }
- }
- }
-
- if(alt_settings > 0)
- {
- status = USBH_OK;
- }
-
- return status;
-}
-
-/**
- * @brief Find OUT Audio Streaming interfaces
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_FindAudioStreamingOUT(USBH_HandleTypeDef *phost)
-{
- uint8_t interface, alt_settings;
- USBH_StatusTypeDef status = USBH_FAIL ;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- AUDIO_Handle = phost->pActiveClass->pData;
-
- /* Look For AUDIOSTREAMING IN interface */
- alt_settings = 0;
- for (interface = 0; interface < USBH_MAX_NUM_INTERFACES ; interface ++ )
- {
- if((phost->device.CfgDesc.Itf_Desc[interface].bInterfaceClass == AC_CLASS)&&
- (phost->device.CfgDesc.Itf_Desc[interface].bInterfaceSubClass == USB_SUBCLASS_AUDIOSTREAMING))
- {
- if(((phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].bEndpointAddress & 0x80) == 0x00)&&
- (phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].wMaxPacketSize > 0))
- {
- AUDIO_Handle->stream_out[alt_settings].Ep = phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].bEndpointAddress;
- AUDIO_Handle->stream_out[alt_settings].EpSize = phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].wMaxPacketSize;
- AUDIO_Handle->stream_out[alt_settings].interface = phost->device.CfgDesc.Itf_Desc[interface].bInterfaceNumber;
- AUDIO_Handle->stream_out[alt_settings].AltSettings = phost->device.CfgDesc.Itf_Desc[interface].bAlternateSetting;
- AUDIO_Handle->stream_out[alt_settings].Poll = phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].bInterval;
- AUDIO_Handle->stream_out[alt_settings].valid = 1;
- alt_settings++;
- }
- }
- }
-
- if(alt_settings > 0)
- {
- status = USBH_OK;
- }
-
- return status;
-}
-
-/**
- * @brief Find HID Control interfaces
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_FindHIDControl(USBH_HandleTypeDef *phost)
-{
- uint8_t interface;
- USBH_StatusTypeDef status = USBH_FAIL ;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- AUDIO_Handle = phost->pActiveClass->pData;
-
- /* Look For AUDIOCONTROL interface */
- interface = USBH_FindInterface(phost, AC_CLASS, USB_SUBCLASS_AUDIOCONTROL, 0xFF);
- if(interface != 0xFF)
- {
- for (interface = 0; interface < USBH_MAX_NUM_INTERFACES ; interface ++ )
- {
- if((phost->device.CfgDesc.Itf_Desc[interface].bInterfaceClass == 0x03)&& /*HID*/
- (phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].wMaxPacketSize > 0))
- {
- if((phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].bEndpointAddress & 0x80) == 0x80)
- {
- AUDIO_Handle->control.Ep = phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].bEndpointAddress;
- AUDIO_Handle->control.EpSize = phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].wMaxPacketSize;
- AUDIO_Handle->control.interface = phost->device.CfgDesc.Itf_Desc[interface].bInterfaceNumber;
- AUDIO_Handle->control.Poll = phost->device.CfgDesc.Itf_Desc[interface].Ep_Desc[0].bInterval;
- AUDIO_Handle->control.supported = 1;
- status = USBH_OK;
- break;
- }
- }
- }
- }
- return status;
-}
-
-/**
- * @brief Parse AC and interfaces Descriptors
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_ParseCSDescriptors(USBH_HandleTypeDef *phost)
-{
- USBH_DescHeader_t *pdesc ;
- uint16_t ptr;
- int8_t itf_index = 0;
- int8_t itf_number = 0;
- int8_t alt_setting;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- AUDIO_Handle = phost->pActiveClass->pData;
- pdesc = (USBH_DescHeader_t *)(phost->device.CfgDesc_Raw);
- ptr = USB_LEN_CFG_DESC;
-
- AUDIO_Handle->class_desc.FeatureUnitNum = 0;
- AUDIO_Handle->class_desc.InputTerminalNum = 0;
- AUDIO_Handle->class_desc.OutputTerminalNum = 0;
- AUDIO_Handle->class_desc.ASNum = 0;
-
- while(ptr < phost->device.CfgDesc.wTotalLength)
- {
- pdesc = USBH_GetNextDesc((void *)pdesc, &ptr);
-
- switch (pdesc->bDescriptorType)
- {
-
- case USB_DESC_TYPE_INTERFACE:
- itf_number = *((uint8_t *)pdesc + 2);
- alt_setting = *((uint8_t *)pdesc + 3);
- itf_index = USBH_FindInterfaceIndex (phost, itf_number, alt_setting);
- break;
-
- case USB_DESC_TYPE_CS_INTERFACE:
- if(itf_number <= phost->device.CfgDesc.bNumInterfaces)
- {
-
- ParseCSDescriptors(&AUDIO_Handle->class_desc,
- phost->device.CfgDesc.Itf_Desc[itf_index].bInterfaceSubClass,
- (uint8_t *)pdesc);
- }
- break;
-
- default:
- break;
- }
- }
- return USBH_OK;
-}
-
-/**
- * @brief Parse AC interfaces
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef ParseCSDescriptors(AUDIO_ClassSpecificDescTypedef *class_desc,
- uint8_t ac_subclass,
- uint8_t *pdesc)
-{
- if(ac_subclass == USB_SUBCLASS_AUDIOCONTROL)
- {
- switch(pdesc[2])
- {
- case UAC_HEADER:
- class_desc->cs_desc.HeaderDesc = (AUDIO_HeaderDescTypeDef *)pdesc;
- break;
-
- case UAC_INPUT_TERMINAL:
- class_desc->cs_desc.InputTerminalDesc[class_desc->InputTerminalNum++] = (AUDIO_ITDescTypeDef*) pdesc;
- break;
-
- case UAC_OUTPUT_TERMINAL:
- class_desc->cs_desc.OutputTerminalDesc[class_desc->OutputTerminalNum++] = (AUDIO_OTDescTypeDef*) pdesc;
- break;
-
- case UAC_FEATURE_UNIT:
- class_desc->cs_desc.FeatureUnitDesc[class_desc->FeatureUnitNum++] = (AUDIO_FeatureDescTypeDef*) pdesc;
- break;
-
- case UAC_SELECTOR_UNIT:
- class_desc->cs_desc.SelectorUnitDesc[class_desc->SelectorUnitNum++] = (AUDIO_SelectorDescTypeDef*) pdesc;
- break;
-
- case UAC_MIXER_UNIT:
- class_desc->cs_desc.MixerUnitDesc[class_desc->MixerUnitNum++] = (AUDIO_MixerDescTypeDef*) pdesc;
- break;
-
- default:
- break;
- }
- }
- else if(ac_subclass == USB_SUBCLASS_AUDIOSTREAMING)
- {
- switch(pdesc[2])
- {
- case UAC_AS_GENERAL:
- class_desc->as_desc[class_desc->ASNum].GeneralDesc = (AUDIO_ASGeneralDescTypeDef*) pdesc;
- break;
- case UAC_FORMAT_TYPE:
- class_desc->as_desc[class_desc->ASNum++].FormatTypeDesc = (AUDIO_ASFormatTypeDescTypeDef*) pdesc;
- break;
- default:
- break;
- }
- }
-
- return USBH_OK;
-}
-
-
-/**
- * @brief Link a Unit to next associated one
- * @param phost: Host handle
- * @param UnitID: Unit identifer
- * @retval UnitID, Index and Type of the assicated Unit
- */
-static int32_t USBH_AUDIO_FindLinkedUnit(USBH_HandleTypeDef *phost, uint8_t UnitID)
-{
- uint8_t Index;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- AUDIO_Handle = phost->pActiveClass->pData;
-
- /* Find Feature Unit */
- for(Index = 0; Index < AUDIO_Handle->class_desc.FeatureUnitNum; Index ++)
- {
- if(AUDIO_Handle->class_desc.cs_desc.FeatureUnitDesc[Index]->bSourceID == UnitID)
- {
- UnitID = AUDIO_Handle->class_desc.cs_desc.FeatureUnitDesc[Index]->bUnitID;
-
- return ((UnitID << 16) | (UAC_FEATURE_UNIT << 8) | Index);
- }
- }
-
- /* Find Mixer Unit */
- for(Index = 0; Index < AUDIO_Handle->class_desc.MixerUnitNum; Index ++)
- {
- if((AUDIO_Handle->class_desc.cs_desc.MixerUnitDesc[Index]->bSourceID0 == UnitID)||
- (AUDIO_Handle->class_desc.cs_desc.MixerUnitDesc[Index]->bSourceID1 == UnitID))
- {
- UnitID = AUDIO_Handle->class_desc.cs_desc.MixerUnitDesc[Index]->bUnitID;
-
- return ((UnitID << 16) | (UAC_MIXER_UNIT << 8) | Index);
- }
- }
-
-
- /* Find Selector Unit */
- for(Index = 0; Index < AUDIO_Handle->class_desc.SelectorUnitNum; Index ++)
- {
- if(AUDIO_Handle->class_desc.cs_desc.SelectorUnitDesc[Index]->bSourceID0 == UnitID)
- {
- UnitID = AUDIO_Handle->class_desc.cs_desc.SelectorUnitDesc[Index]->bUnitID;
-
- return ((UnitID << 16) | (UAC_SELECTOR_UNIT << 8) | Index);
- }
- }
-
-
- /* Find OT Unit */
- for(Index = 0; Index < AUDIO_Handle->class_desc.OutputTerminalNum; Index ++)
- {
- if(AUDIO_Handle->class_desc.cs_desc.OutputTerminalDesc[Index]->bSourceID == UnitID)
- {
- UnitID = AUDIO_Handle->class_desc.cs_desc.OutputTerminalDesc[Index]->bTerminalID;
-
- return ((UnitID << 16) | (UAC_OUTPUT_TERMINAL << 8) | Index);
- }
- }
-
- /* No associated Unit found */
- return -1;
-}
-
-/**
- * @brief Build full path for Microphone device
- * @param phost: Host handle
- * @retval USBH Status
- */
-USBH_StatusTypeDef USBH_AUDIO_BuildMicrophonePath(USBH_HandleTypeDef *phost)
-{
- uint8_t UnitID = 0, Type, Index;
- uint32_t value;
- uint8_t terminalIndex;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- AUDIO_Handle = phost->pActiveClass->pData;
-
- /*Find microphone IT*/
- for(terminalIndex = 0; terminalIndex < AUDIO_Handle->class_desc.InputTerminalNum; terminalIndex++)
- {
- if(LE16(AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[terminalIndex]->wTerminalType) == 0x201)
- {
- UnitID = AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[terminalIndex]->bTerminalID;
- AUDIO_Handle->microphone.asociated_channels = AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[terminalIndex]->bNrChannels;
- break;
- }
- }
-
- do
- {
- value = USBH_AUDIO_FindLinkedUnit(phost, UnitID);
- Index = value & 0xFF;
- Type = (value >> 8) & 0xFF;
- UnitID = (value >> 16) & 0xFF;
-
- switch (Type)
- {
- case UAC_FEATURE_UNIT:
- AUDIO_Handle->microphone.asociated_feature = Index;
- break;
-
- case UAC_MIXER_UNIT:
- AUDIO_Handle->microphone.asociated_mixer = Index;
- break;
-
- case UAC_SELECTOR_UNIT:
- AUDIO_Handle->microphone.asociated_selector = Index;
- break;
-
- case UAC_OUTPUT_TERMINAL:
- AUDIO_Handle->microphone.asociated_terminal = Index;
- break;
- }
- }
- while ((Type != UAC_OUTPUT_TERMINAL) && (value > 0));
-
-
-
- return USBH_OK;
-}
-
-/**
- * @brief Build full path for Headphone device
- * @param phost: Host handle
- * @retval USBH Status
- */
-USBH_StatusTypeDef USBH_AUDIO_BuildHeadphonePath(USBH_HandleTypeDef *phost)
-{
- uint8_t UnitID = 0, Type, Index;
- uint32_t value;
- uint8_t terminalIndex;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- AUDIO_Handle = phost->pActiveClass->pData;
-
- /*Find association betwen audio streaming and microphone*/
- for(terminalIndex = 0; terminalIndex < AUDIO_Handle->class_desc.InputTerminalNum; terminalIndex++)
- {
- if(LE16(AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[terminalIndex]->wTerminalType) == 0x101)
- {
- UnitID = AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[terminalIndex]->bTerminalID;
- AUDIO_Handle->headphone.asociated_channels = AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[terminalIndex]->bNrChannels;
- break;
- }
- }
-
- for(Index = 0; Index < AUDIO_Handle->class_desc.ASNum; Index++)
- {
- if(AUDIO_Handle->class_desc.as_desc[Index].GeneralDesc->bTerminalLink == UnitID)
- {
- AUDIO_Handle->headphone.asociated_as = Index;
- break;
- }
- }
-
- do
- {
- value = USBH_AUDIO_FindLinkedUnit(phost, UnitID);
- Index = value & 0xFF;
- Type = (value >> 8) & 0xFF;
- UnitID = (value >> 16) & 0xFF;
-
- switch (Type)
- {
- case UAC_FEATURE_UNIT:
- AUDIO_Handle->headphone.asociated_feature = Index;
- break;
-
- case UAC_MIXER_UNIT:
- AUDIO_Handle->headphone.asociated_mixer = Index;
- break;
-
- case UAC_SELECTOR_UNIT:
- AUDIO_Handle->headphone.asociated_selector = Index;
- break;
-
- case UAC_OUTPUT_TERMINAL:
- AUDIO_Handle->headphone.asociated_terminal = Index;
- if(LE16(AUDIO_Handle->class_desc.cs_desc.OutputTerminalDesc[Index]->wTerminalType) != 0x103)
- {
- return USBH_OK;
- }
- break;
- }
- }
- while ((Type != UAC_OUTPUT_TERMINAL) && (value > 0));
-
- return USBH_FAIL;
-}
-
-
-/**
- * @brief Handle Set Cur request
- * @param phost: Host handle
- * @param subtype: subtype index
- * @param feature: feature index
- * @param controlSelector: control code
- * @param channel: channel index
- * @param length: Command length
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AC_SetCur(USBH_HandleTypeDef *phost,
- uint8_t subtype,
- uint8_t feature,
- uint8_t controlSelector,
- uint8_t channel,
- uint16_t length)
-{
- uint16_t wValue,wIndex,wLength;
- uint8_t UnitID,InterfaceNum;
- AUDIO_HandleTypeDef *AUDIO_Handle;
- AUDIO_Handle = phost->pActiveClass->pData;
-
- switch(subtype)
- {
- case UAC_INPUT_TERMINAL:
- UnitID = AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[0]->bTerminalID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- wValue = (COPY_PROTECT_CONTROL << 8 ) ;
- AUDIO_Handle->mem[0] = 0x00;
-
- wLength = 1;
- break;
- case UAC_FEATURE_UNIT:
- UnitID = AUDIO_Handle->class_desc.cs_desc.FeatureUnitDesc[feature]->bUnitID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- /*holds the CS(control selector ) and CN (channel number)*/
- wValue = (controlSelector << 8) | channel;
- wLength = length;
- break;
- }
-
- phost->Control.setup.b.bmRequestType = USB_H2D | USB_REQ_RECIPIENT_INTERFACE | \
- USB_REQ_TYPE_CLASS;
-
- phost->Control.setup.b.bRequest = UAC_SET_CUR;
- phost->Control.setup.b.wValue.w = wValue;
- phost->Control.setup.b.wIndex.w = wIndex;
- phost->Control.setup.b.wLength.w = wLength;
-
- return(USBH_CtlReq(phost, (uint8_t *)(AUDIO_Handle->mem) , wLength ));
-
-}
-
-/**
- * @brief Handle Get Cur request
- * @param phost: Host handle
- * @param subtype: subtype index
- * @param feature: feature index
- * @param controlSelector: control code
- * @param channel: channel index
- * @param length: Command length
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AC_GetCur(USBH_HandleTypeDef *phost,
- uint8_t subtype,
- uint8_t feature,
- uint8_t controlSelector,
- uint8_t channel,
- uint16_t length)
-{
- uint16_t wValue = 0, wIndex = 0,wLength = 0;
- uint8_t UnitID = 0, InterfaceNum = 0;
- AUDIO_HandleTypeDef *AUDIO_Handle;
- AUDIO_Handle = phost->pActiveClass->pData;
-
- switch(subtype)
- {
- case UAC_INPUT_TERMINAL:
- UnitID = AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[0]->bTerminalID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- wValue = (COPY_PROTECT_CONTROL << 8 ) ;
- AUDIO_Handle->mem[0] = 0x00;
-
- wLength = 1;
- break;
- case UAC_FEATURE_UNIT:
- UnitID = AUDIO_Handle->class_desc.cs_desc.FeatureUnitDesc[feature]->bUnitID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- /*holds the CS(control selector ) and CN (channel number)*/
- wValue = (controlSelector << 8) | channel;
- wLength = length;
- break;
-
- case UAC_OUTPUT_TERMINAL:
- UnitID = AUDIO_Handle->class_desc.cs_desc.OutputTerminalDesc[0]->bTerminalID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- wValue = (COPY_PROTECT_CONTROL << 8 ) ;
- wLength = 1;
- break;
- }
-
- phost->Control.setup.b.bmRequestType = USB_D2H | USB_REQ_RECIPIENT_INTERFACE | \
- USB_REQ_TYPE_CLASS;
-
- phost->Control.setup.b.bRequest = UAC_GET_CUR;
- phost->Control.setup.b.wValue.w = wValue;
- phost->Control.setup.b.wIndex.w = wIndex;
- phost->Control.setup.b.wLength.w = wLength;
-
- return(USBH_CtlReq(phost, (uint8_t *)(AUDIO_Handle->mem) , wLength ));
-
-}
-
-
-/**
- * @brief Handle Get Max request
- * @param phost: Host handle
- * @param subtype: subtype index
- * @param feature: feature index
- * @param controlSelector: control code
- * @param channel: channel index
- * @param length: Command length
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AC_GetMax(USBH_HandleTypeDef *phost,
- uint8_t subtype,
- uint8_t feature,
- uint8_t controlSelector,
- uint8_t channel,
- uint16_t length)
-{
- uint16_t wValue = 0, wIndex = 0, wLength = 0;
- uint8_t UnitID = 0, InterfaceNum = 0;
- AUDIO_HandleTypeDef *AUDIO_Handle;
- AUDIO_Handle = phost->pActiveClass->pData;
-
- switch(subtype)
- {
- case UAC_INPUT_TERMINAL:
- UnitID = AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[0]->bTerminalID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- wValue = (COPY_PROTECT_CONTROL << 8 ) ;
- AUDIO_Handle->mem[0] = 0x00;
-
- wLength = 1;
- break;
- case UAC_FEATURE_UNIT:
- UnitID = AUDIO_Handle->class_desc.cs_desc.FeatureUnitDesc[feature]->bUnitID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- /*holds the CS(control selector ) and CN (channel number)*/
- wValue = (controlSelector << 8) | channel;
- wLength = length;
- break;
-
- case UAC_OUTPUT_TERMINAL:
- UnitID = AUDIO_Handle->class_desc.cs_desc.OutputTerminalDesc[0]->bTerminalID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- wValue = (COPY_PROTECT_CONTROL << 8 ) ;
- wLength = 1;
- break;
- }
-
- phost->Control.setup.b.bmRequestType = USB_D2H | USB_REQ_RECIPIENT_INTERFACE | \
- USB_REQ_TYPE_CLASS;
-
- phost->Control.setup.b.bRequest = UAC_GET_MAX;
- phost->Control.setup.b.wValue.w = wValue;
- phost->Control.setup.b.wIndex.w = wIndex;
- phost->Control.setup.b.wLength.w = wLength;
-
- return(USBH_CtlReq(phost, (uint8_t *)(AUDIO_Handle->mem) , wLength ));
-
-}
-
-
-
-/**
- * @brief Handle Get Res request
- * @param phost: Host handle
- * @param subtype: subtype index
- * @param feature: feature index
- * @param controlSelector: control code
- * @param channel: channel index
- * @param length: Command length
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AC_GetRes(USBH_HandleTypeDef *phost,
- uint8_t subtype,
- uint8_t feature,
- uint8_t controlSelector,
- uint8_t channel,
- uint16_t length)
-{
- uint16_t wValue = 0, wIndex = 0, wLength = 0;
- uint8_t UnitID = 0, InterfaceNum = 0;
- AUDIO_HandleTypeDef *AUDIO_Handle;
- AUDIO_Handle = phost->pActiveClass->pData;
-
- switch(subtype)
- {
- case UAC_INPUT_TERMINAL:
- UnitID = AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[0]->bTerminalID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- wValue = (COPY_PROTECT_CONTROL << 8 ) ;
- AUDIO_Handle->mem[0] = 0x00;
-
- wLength = 1;
- break;
- case UAC_FEATURE_UNIT:
- UnitID = AUDIO_Handle->class_desc.cs_desc.FeatureUnitDesc[feature]->bUnitID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- /*holds the CS(control selector ) and CN (channel number)*/
- wValue = (controlSelector << 8) | channel;
- wLength = length;
- break;
-
- case UAC_OUTPUT_TERMINAL:
- UnitID = AUDIO_Handle->class_desc.cs_desc.OutputTerminalDesc[0]->bTerminalID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- wValue = (COPY_PROTECT_CONTROL << 8 ) ;
- wLength = 1;
- break;
- }
-
- phost->Control.setup.b.bmRequestType = USB_D2H | USB_REQ_RECIPIENT_INTERFACE | \
- USB_REQ_TYPE_CLASS;
-
- phost->Control.setup.b.bRequest = UAC_GET_RES;
- phost->Control.setup.b.wValue.w = wValue;
- phost->Control.setup.b.wIndex.w = wIndex;
- phost->Control.setup.b.wLength.w = wLength;
-
- return(USBH_CtlReq(phost, (uint8_t *)(AUDIO_Handle->mem) , wLength ));
-
-}
-
-/**
- * @brief Handle Get Min request
- * @param phost: Host handle
- * @param subtype: subtype index
- * @param feature: feature index
- * @param controlSelector: control code
- * @param channel: channel index
- * @param length: Command length
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AC_GetMin(USBH_HandleTypeDef *phost,
- uint8_t subtype,
- uint8_t feature,
- uint8_t controlSelector,
- uint8_t channel,
- uint16_t length)
-{
- uint16_t wValue = 0, wIndex = 0, wLength = 0;
- uint8_t UnitID = 0, InterfaceNum = 0;
- AUDIO_HandleTypeDef *AUDIO_Handle;
- AUDIO_Handle = phost->pActiveClass->pData;
-
- switch(subtype)
- {
- case UAC_INPUT_TERMINAL:
- UnitID = AUDIO_Handle->class_desc.cs_desc.InputTerminalDesc[0]->bTerminalID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- wValue = (COPY_PROTECT_CONTROL << 8 ) ;
- AUDIO_Handle->mem[0] = 0x00;
-
- wLength = 1;
- break;
- case UAC_FEATURE_UNIT:
- UnitID = AUDIO_Handle->class_desc.cs_desc.FeatureUnitDesc[feature]->bUnitID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- /*holds the CS(control selector ) and CN (channel number)*/
- wValue = (controlSelector << 8) | channel;
- wLength = length;
- break;
-
- case UAC_OUTPUT_TERMINAL:
- UnitID = AUDIO_Handle->class_desc.cs_desc.OutputTerminalDesc[0]->bTerminalID;
- InterfaceNum = 0; /*Always zero Control Interface */
- wIndex = ( UnitID << 8 ) | InterfaceNum ;
- wValue = (COPY_PROTECT_CONTROL << 8 ) ;
- wLength = 1;
- break;
- }
-
- phost->Control.setup.b.bmRequestType = USB_D2H | USB_REQ_RECIPIENT_INTERFACE | \
- USB_REQ_TYPE_CLASS;
-
- phost->Control.setup.b.bRequest = UAC_GET_MIN;
- phost->Control.setup.b.wValue.w = wValue;
- phost->Control.setup.b.wIndex.w = wIndex;
- phost->Control.setup.b.wLength.w = wLength;
-
- return(USBH_CtlReq(phost, (uint8_t *)(AUDIO_Handle->mem) , wLength ));
-
-}
-
-/**
- * @brief Handle Set Endpoint Controls Request
- * @param phost: Host handle
- * @param Ep: Endpoint address
- * @param buf: pointer to data
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_SetEndpointControls(USBH_HandleTypeDef *phost,
- uint8_t Ep,
- uint8_t *buff)
-{
- uint16_t wValue, wIndex, wLength;
-
-
- wValue = SAMPLING_FREQ_CONTROL << 8;
- wIndex = Ep;
- wLength = 3; /*length of the frequency parameter*/
-
- phost->Control.setup.b.bmRequestType = USB_H2D | USB_REQ_RECIPIENT_ENDPOINT | \
- USB_REQ_TYPE_CLASS;
-
- phost->Control.setup.b.bRequest = UAC_SET_CUR;
- phost->Control.setup.b.wValue.w = wValue;
- phost->Control.setup.b.wIndex.w = wIndex;
- phost->Control.setup.b.wLength.w = wLength;
-
- return(USBH_CtlReq(phost, (uint8_t *)buff, wLength ));
-
-}
-
-/**
- * @brief Handle Input stream process
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_InputStream (USBH_HandleTypeDef *phost)
-{
- USBH_StatusTypeDef status = USBH_BUSY ;
-
- return status;
-}
-
-/**
- * @brief Handle HID Control process
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_Control (USBH_HandleTypeDef *phost)
-{
- USBH_StatusTypeDef status = USBH_BUSY ;
- AUDIO_HandleTypeDef *AUDIO_Handle = phost->pActiveClass->pData;
- uint16_t attribute = 0;
-
-
- switch(AUDIO_Handle->control_state)
- {
- case AUDIO_CONTROL_INIT:
- if((phost->Timer & 1) == 0)
- {
- AUDIO_Handle->control.timer = phost->Timer;
- USBH_InterruptReceiveData(phost,
- (uint8_t *)(AUDIO_Handle->mem),
- AUDIO_Handle->control.EpSize,
- AUDIO_Handle->control.Pipe);
-
- AUDIO_Handle->temp_feature = AUDIO_Handle->headphone.asociated_feature;
- AUDIO_Handle->temp_channels = AUDIO_Handle->headphone.asociated_channels;
-
- AUDIO_Handle->control_state = AUDIO_CONTROL_CHANGE ;
- }
- break;
- case AUDIO_CONTROL_CHANGE:
- if(USBH_LL_GetURBState(phost , AUDIO_Handle->control.Pipe) == USBH_URB_DONE)
- {
- attribute = LE16(&AUDIO_Handle->mem[0]);
- if(USBH_AUDIO_SetControlAttribute (phost, attribute) == USBH_BUSY)
- {
- break;
- }
- }
-
- if(( phost->Timer - AUDIO_Handle->control.timer) >= AUDIO_Handle->control.Poll)
- {
- AUDIO_Handle->control.timer = phost->Timer;
-
- USBH_InterruptReceiveData(phost,
- (uint8_t *)(AUDIO_Handle->mem),
- AUDIO_Handle->control.EpSize,
- AUDIO_Handle->control.Pipe);
-
- }
- break;
-
- case AUDIO_CONTROL_VOLUME_UP:
- if( USBH_AUDIO_SetControlAttribute (phost, 1) == USBH_OK)
- {
- AUDIO_Handle->control_state = AUDIO_CONTROL_INIT;
- status = USBH_OK;
- }
- break;
-
- case AUDIO_CONTROL_VOLUME_DOWN:
- if( USBH_AUDIO_SetControlAttribute (phost, 2) == USBH_OK)
- {
- AUDIO_Handle->control_state = AUDIO_CONTROL_INIT;
- status = USBH_OK;
- }
- break;
-
- case AUDIO_CONTROL_IDLE:
- default:
- break;
- }
-
- return status;
-}
-
-/**
- * @brief Handle Output stream process
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_OutputStream (USBH_HandleTypeDef *phost)
-{
- USBH_StatusTypeDef status = USBH_BUSY ;
- AUDIO_HandleTypeDef *AUDIO_Handle = phost->pActiveClass->pData;
- uint8_t *buff;
-
-
- switch(AUDIO_Handle->play_state)
- {
- case AUDIO_PLAYBACK_INIT:
-
- if( AUDIO_Handle->class_desc.as_desc[AUDIO_Handle->headphone.asociated_as].FormatTypeDesc->bSamFreqType == 0)
- {
- AUDIO_Handle->play_state = AUDIO_PLAYBACK_SET_EP_FREQ;
- }
- else
- {
- AUDIO_Handle->play_state = AUDIO_PLAYBACK_SET_EP;
- }
-#if (USBH_USE_OS == 1)
- osMessagePut ( phost->os_event, USBH_URB_EVENT, 0);
-#endif
- break;
-
- case AUDIO_PLAYBACK_SET_EP_FREQ:
-
- buff = (uint8_t*)AUDIO_Handle->class_desc.as_desc[AUDIO_Handle->headphone.asociated_as].FormatTypeDesc->tSamFreq[0];
-
- status = USBH_AUDIO_SetEndpointControls(phost, AUDIO_Handle->headphone.Ep, buff);
- if(status == USBH_OK)
- {
- AUDIO_Handle->play_state = AUDIO_PLAYBACK_IDLE;
- }
- break;
-
- case AUDIO_PLAYBACK_SET_EP:
- buff = (uint8_t *)&AUDIO_Handle->headphone.frequency;
- status = USBH_AUDIO_SetEndpointControls(phost,AUDIO_Handle->headphone.Ep, buff);
- if(status == USBH_OK)
- {
- AUDIO_Handle->play_state = AUDIO_PLAYBACK_IDLE;
- USBH_AUDIO_FrequencySet(phost);
- }
- break;
- case AUDIO_PLAYBACK_IDLE:
-#if (USBH_USE_OS == 1)
- osMessagePut ( phost->os_event, USBH_CLASS_EVENT, 0);
-#endif
- status = USBH_OK;
- break;
-
- case AUDIO_PLAYBACK_PLAY:
- USBH_AUDIO_Transmit(phost);
- status = USBH_OK;
- break;
-
- default:
- break;
- }
-
- return status;
-}
-
-/**
- * @brief Handle Transmission process
- * @param phost: Host handle
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_Transmit (USBH_HandleTypeDef *phost)
-{
- USBH_StatusTypeDef status = USBH_BUSY ;
- AUDIO_HandleTypeDef *AUDIO_Handle = phost->pActiveClass->pData;
-
- switch(AUDIO_Handle->processing_state)
- {
- case AUDIO_DATA_START_OUT:
- /* Sync with start of Even Frame */
- if((phost->Timer & 1) == 0)
- {
- AUDIO_Handle->headphone.timer = phost->Timer;
- AUDIO_Handle->processing_state = AUDIO_DATA_OUT;
- USBH_IsocSendData(phost,
- AUDIO_Handle->headphone.buf,
- AUDIO_Handle->headphone.frame_length,
- AUDIO_Handle->headphone.Pipe);
-
- AUDIO_Handle->headphone.partial_ptr = AUDIO_Handle->headphone.frame_length;
- AUDIO_Handle->headphone.global_ptr = AUDIO_Handle->headphone.frame_length;
- AUDIO_Handle->headphone.cbuf = AUDIO_Handle->headphone.buf;
-
- }
- break;
-
- case AUDIO_DATA_OUT:
- if((USBH_LL_GetURBState(phost , AUDIO_Handle->headphone.Pipe) == USBH_URB_DONE)&&
- (( phost->Timer - AUDIO_Handle->headphone.timer) >= AUDIO_Handle->headphone.Poll))
- {
- AUDIO_Handle->headphone.timer = phost->Timer;
-
- if(AUDIO_Handle->control.supported == 1)
- {
- USBH_AUDIO_Control (phost);
- }
-
- if(AUDIO_Handle->headphone.global_ptr <= AUDIO_Handle->headphone.total_length)
- {
- USBH_IsocSendData(phost,
- AUDIO_Handle->headphone.cbuf,
- AUDIO_Handle->headphone.frame_length,
- AUDIO_Handle->headphone.Pipe);
-
- AUDIO_Handle->headphone.cbuf += AUDIO_Handle->headphone.frame_length;
- AUDIO_Handle->headphone.partial_ptr += AUDIO_Handle->headphone.frame_length;
- AUDIO_Handle->headphone.global_ptr += AUDIO_Handle->headphone.frame_length;
- }
- else
- {
- AUDIO_Handle->headphone.partial_ptr = 0xFFFFFFFF;
- AUDIO_Handle->play_state = AUDIO_PLAYBACK_IDLE;
- }
- }
- break;
- }
- return status;
-}
-
-/**
- * @brief USBH_AUDIO_SetFrequency
- * Set Audio sampling parameters
- * @param phost: Host handle
- * @param SampleRate: Sample Rate
- * @param NbrChannels: Number of Channels
- * @param BitPerSample: Bit Per Sample
- * @retval USBH Status
- */
-USBH_StatusTypeDef USBH_AUDIO_SetFrequency (USBH_HandleTypeDef *phost,
- uint16_t SampleRate,
- uint8_t NbrChannels,
- uint8_t BitPerSample)
-{
- USBH_StatusTypeDef Status = USBH_BUSY;
- AUDIO_HandleTypeDef *AUDIO_Handle;
- uint8_t index;
- uint8_t change_freq = FALSE;
- uint32_t freq_min, freq_max;
- uint8_t num_supported_freq;
-
- if(phost->gState == HOST_CLASS)
- {
- AUDIO_Handle = phost->pActiveClass->pData;
- if(AUDIO_Handle->play_state == AUDIO_PLAYBACK_IDLE)
- {
-
- if(AUDIO_Handle->class_desc.as_desc[AUDIO_Handle->headphone.asociated_as].FormatTypeDesc->bSamFreqType == 0)
- {
- freq_min = LE24(AUDIO_Handle->class_desc.as_desc[AUDIO_Handle->headphone.asociated_as].FormatTypeDesc->tSamFreq[0]);
- freq_max = LE24(AUDIO_Handle->class_desc.as_desc[AUDIO_Handle->headphone.asociated_as].FormatTypeDesc->tSamFreq[1]);
-
- if(( SampleRate >= freq_min)&& (SampleRate <= freq_max))
- {
- change_freq = TRUE;
- }
- }
- else
- {
-
- num_supported_freq = (AUDIO_Handle->class_desc.as_desc[AUDIO_Handle->headphone.asociated_as].FormatTypeDesc->bLength - 8)/3;
-
-
- for(index = 0; index < num_supported_freq; index++)
- {
- if(SampleRate == LE24(AUDIO_Handle->class_desc.as_desc[AUDIO_Handle->headphone.asociated_as].FormatTypeDesc->tSamFreq[index]))
- {
- change_freq = TRUE;
- break;
- }
- }
- }
-
- if(change_freq == TRUE)
- {
- AUDIO_Handle->headphone.frequency = SampleRate;
- AUDIO_Handle->headphone.frame_length = (SampleRate * BitPerSample * NbrChannels) / 8000;
- AUDIO_Handle->play_state = AUDIO_PLAYBACK_SET_EP;
- Status = USBH_OK;
-
- }
- }
- }
- return Status;
-}
-
-/**
- * @brief USBH_AUDIO_Play
- * Start playback process
- * @param phost: Host handle
- * @param buf: pointer to raw audio data
- * @param length: total length of the audio data
- * @retval USBH Status
- */
-USBH_StatusTypeDef USBH_AUDIO_Play (USBH_HandleTypeDef *phost, uint8_t *buf, uint32_t length)
-{
- USBH_StatusTypeDef Status = USBH_FAIL;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- if(phost->gState == HOST_CLASS)
- {
- AUDIO_Handle = phost->pActiveClass->pData;
- if(AUDIO_Handle->play_state == AUDIO_PLAYBACK_IDLE)
- {
- AUDIO_Handle->headphone.buf = buf;
- AUDIO_Handle->headphone.total_length = length;
- AUDIO_Handle->play_state = AUDIO_PLAYBACK_PLAY;
- AUDIO_Handle->control_state = AUDIO_CONTROL_INIT;
- AUDIO_Handle->processing_state = AUDIO_DATA_START_OUT;
- Status = USBH_OK;
- }
- }
- return Status;
-}
-
-/**
- * @brief USBH_AUDIO_Pause
- * Stop the playback process
- * @param phost: Host handle
- * @retval USBH Status
- */
-USBH_StatusTypeDef USBH_AUDIO_Stop (USBH_HandleTypeDef *phost)
-{
- USBH_StatusTypeDef Status = USBH_FAIL;
- Status = USBH_AUDIO_Suspend(phost);
- return Status;
-}
-
-/**
- * @brief USBH_AUDIO_Suspend
- * Suspend the playback process
- * @param phost: Host handle
- * @retval USBH Status
- */
-USBH_StatusTypeDef USBH_AUDIO_Suspend (USBH_HandleTypeDef *phost)
-{
- USBH_StatusTypeDef Status = USBH_FAIL;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- if(phost->gState == HOST_CLASS)
- {
- AUDIO_Handle = phost->pActiveClass->pData;
- if(AUDIO_Handle->play_state == AUDIO_PLAYBACK_PLAY)
- {
- AUDIO_Handle->control_state = AUDIO_CONTROL_IDLE;
- AUDIO_Handle->play_state = AUDIO_PLAYBACK_IDLE;
- Status = USBH_OK;
- }
- }
- return Status;
-}
-/**
- * @brief USBH_AUDIO_Resume
- * Resume the playback process
- * @param phost: Host handle
- * @retval USBH Status
- */
-USBH_StatusTypeDef USBH_AUDIO_Resume (USBH_HandleTypeDef *phost)
-{
- USBH_StatusTypeDef Status = USBH_FAIL;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- if(phost->gState == HOST_CLASS)
- {
- AUDIO_Handle = phost->pActiveClass->pData;
- if(AUDIO_Handle->play_state == AUDIO_PLAYBACK_IDLE)
- {
- AUDIO_Handle->control_state = AUDIO_CONTROL_INIT;
- AUDIO_Handle->play_state = AUDIO_PLAYBACK_PLAY;
- }
- }
- return Status;
-}
-/**
- * @brief USBH_AUDIO_GetOutOffset
- * return the current buffer pointer for OUT proces
- * @param phost: Host handle
- * @retval USBH Status
- */
-int32_t USBH_AUDIO_GetOutOffset (USBH_HandleTypeDef *phost)
-{
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- if(phost->gState == HOST_CLASS)
- {
- AUDIO_Handle = phost->pActiveClass->pData;
- if(AUDIO_Handle->play_state == AUDIO_PLAYBACK_PLAY)
- {
- return AUDIO_Handle->headphone.partial_ptr;
- }
- }
- return -1;
-}
-
-/**
- * @brief USBH_AUDIO_ChangeOutBuffer
- * Change audio data buffer address
- * @param phost: Host handle
- * @param buf: buffer address
- * @retval USBH Status
- */
-USBH_StatusTypeDef USBH_AUDIO_ChangeOutBuffer (USBH_HandleTypeDef *phost, uint8_t *buf)
-{
- USBH_StatusTypeDef Status = USBH_FAIL;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
- if(phost->gState == HOST_CLASS)
- {
- AUDIO_Handle = phost->pActiveClass->pData;
- if(AUDIO_Handle->play_state == AUDIO_PLAYBACK_PLAY)
- {
- if(AUDIO_Handle->headphone.buf <= buf)
- {
- AUDIO_Handle->headphone.cbuf = buf;
- if ( AUDIO_Handle->headphone.buf == buf)
- {
- AUDIO_Handle->headphone.partial_ptr = 0;
- }
- Status = USBH_OK;
- }
- }
- }
- return Status;
-}
-
-/**
- * @brief USBH_AUDIO_SetControlAttribute
- * Set Control Attribute
- * @param phost: Host handle
- * @param attrib: control attribute
- * @retval USBH Status
- */
-static USBH_StatusTypeDef USBH_AUDIO_SetControlAttribute (USBH_HandleTypeDef *phost, uint8_t attrib)
-{
- USBH_StatusTypeDef status = USBH_BUSY ;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
-
- AUDIO_Handle = phost->pActiveClass->pData;
-
- switch (attrib)
- {
- case 0x01:
- AUDIO_Handle->headphone.attribute.volume += AUDIO_Handle->headphone.attribute.resolution;
- break;
-
- case 0x02:
- AUDIO_Handle->headphone.attribute.volume -= AUDIO_Handle->headphone.attribute.resolution;
- break;
-
- }
-
- if(AUDIO_Handle->headphone.attribute.volume > AUDIO_Handle->headphone.attribute.volumeMax)
- {
- AUDIO_Handle->headphone.attribute.volume =AUDIO_Handle->headphone.attribute.volumeMax;
- }
-
- if(AUDIO_Handle->headphone.attribute.volume < AUDIO_Handle->headphone.attribute.volumeMin)
- {
- AUDIO_Handle->headphone.attribute.volume =AUDIO_Handle->headphone.attribute.volumeMin;
- }
-
- if(AUDIO_SetVolume (phost,
- AUDIO_Handle->temp_feature,
- AUDIO_Handle->temp_channels,
- AUDIO_Handle->headphone.attribute.volume) != USBH_BUSY)
- {
-
- if(AUDIO_Handle->temp_channels == 1)
- {
- AUDIO_Handle->temp_feature = AUDIO_Handle->headphone.asociated_feature;
- AUDIO_Handle->temp_channels = AUDIO_Handle->headphone.asociated_channels;
- status = USBH_OK;
- }
- else
- {
- AUDIO_Handle->temp_channels--;
- }
- AUDIO_Handle->cs_req_state = AUDIO_REQ_GET_VOLUME;
- }
-
-
- return status;
-}
-
-
-/**
- * @brief USBH_AUDIO_SetVolume
- * Set Volume
- * @param phost: Host handle
- * @param volume: VOLUME_UP/ VOLUME_DOWN
- * @retval USBH Status
- */
-USBH_StatusTypeDef USBH_AUDIO_SetVolume (USBH_HandleTypeDef *phost, AUDIO_VolumeCtrlTypeDef volume_ctl)
-{
- AUDIO_HandleTypeDef *AUDIO_Handle = phost->pActiveClass->pData;
-
- if((volume_ctl == VOLUME_UP) || (volume_ctl == VOLUME_DOWN))
- {
- if(phost->gState == HOST_CLASS)
- {
- AUDIO_Handle = phost->pActiveClass->pData;
- if(AUDIO_Handle->play_state == AUDIO_PLAYBACK_PLAY)
- {
- AUDIO_Handle->control_state = (volume_ctl == VOLUME_UP)? AUDIO_CONTROL_VOLUME_UP : AUDIO_CONTROL_VOLUME_DOWN;
- return USBH_OK;
- }
- }
- }
- return USBH_FAIL;
-}
-/**
- * @brief AUDIO_SetVolume
- * Set Volume
- * @param phost: Host handle
- * @param feature: feature Unit index
- * @param channel: channel index
- * @param volume: new volume
- * @retval USBH Status
- */
-static USBH_StatusTypeDef AUDIO_SetVolume (USBH_HandleTypeDef *phost, uint8_t feature, uint8_t channel, uint16_t volume)
-{
- USBH_StatusTypeDef status = USBH_BUSY ;
- AUDIO_HandleTypeDef *AUDIO_Handle;
-
-
- AUDIO_Handle = phost->pActiveClass->pData;
-
- AUDIO_Handle->mem[0] = volume;
-
- status = USBH_AC_SetCur(phost,
- UAC_FEATURE_UNIT,
- feature,
- VOLUME_CONTROL,
- channel,
- 2);
-
- return status;
-}
-
-/**
- * @brief The function informs user that Settings have been changed
- * @param pdev: Selected device
- * @retval None
- */
-__weak void USBH_AUDIO_FrequencySet(USBH_HandleTypeDef *phost)
-{
-
-}
-/**
-* @}
-*/
-
-/**
-* @}
-*/
-
-/**
-* @}
-*/
-
-
-/**
-* @}
-*/
-
-
-/**
-* @}
-*/
-
-/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
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