Diff: USBAudio/USBAudio.h

Revision:

72:ff90dd9ad449

Parent:

71:53949e6131f6

--- a/USBAudio/USBAudio.h	Thu Jul 27 12:14:04 2017 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,337 +0,0 @@
-/* Copyright (c) 2010-2011 mbed.org, MIT License
-*
-* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
-* and associated documentation files (the "Software"), to deal in the Software without
-* restriction, including without limitation the rights to use, copy, modify, merge, publish,
-* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
-* Software is furnished to do so, subject to the following conditions:
-*
-* The above copyright notice and this permission notice shall be included in all copies or
-* substantial portions of the Software.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
-* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
-
-#ifndef USBAudio_H
-#define USBAudio_H
-
-/* These headers are included for child class. */
-#include "USBEndpoints.h"
-#include "USBDescriptor.h"
-#include "USBDevice_Types.h"
-
-#include "USBDevice.h"
-#include "Callback.h"
-
-/**
-* USBAudio example
-*
-* @code
-* #include "mbed.h"
-* #include "USBAudio.h"
-*
-* Serial pc(USBTX, USBRX);
-*
-* // frequency: 48 kHz
-* #define FREQ 48000
-*
-* // 1 channel: mono
-* #define NB_CHA 1
-*
-* // length of an audio packet: each ms, we receive 48 * 16bits ->48 * 2 bytes. as there is one channel, the length will be 48 * 2 * 1
-* #define AUDIO_LENGTH_PACKET 48 * 2 * 1
-*
-* // USBAudio
-* USBAudio audio(FREQ, NB_CHA);
-*
-* int main() {
-*    int16_t buf[AUDIO_LENGTH_PACKET/2];
-*
-*    while (1) {
-*        // read an audio packet
-*        audio.read((uint8_t *)buf);
-*
-*
-*        // print packet received
-*        pc.printf("recv: ");
-*        for(int i = 0; i < AUDIO_LENGTH_PACKET/2; i++) {
-*            pc.printf("%d ", buf[i]);
-*        }
-*        pc.printf("\r\n");
-*    }
-* }
-* @endcode
-*/
-class USBAudio: public USBDevice {
-public:
-
-    /**
-    * Constructor
-    *
-    * @param frequency_in frequency in Hz (default: 48000)
-    * @param channel_nb_in channel number (1 or 2) (default: 1)
-    * @param frequency_out frequency in Hz (default: 8000)
-    * @param channel_nb_out_in channel number (1 or 2) (default: 1)
-    * @param vendor_id Your vendor_id
-    * @param product_id Your product_id
-    * @param product_release Your preoduct_release
-    */
-    USBAudio(uint32_t frequency_in = 48000, uint8_t channel_nb_in = 1, uint32_t frequency_out = 8000, uint8_t channel_nb_out = 1, uint16_t vendor_id = 0x7bb8, uint16_t product_id = 0x1111, uint16_t product_release = 0x0100);
-
-    /**
-    * Get current volume between 0.0 and 1.0
-    *
-    * @returns volume
-    */
-    float getVolume();
-
-    /**
-    * Read an audio packet. During a frame, only a single reading (you can't write and read an audio packet during the same frame)can be done using this method. Warning: Blocking
-    *
-    * @param buf pointer on a buffer which will be filled with an audio packet
-    *
-    * @returns true if successfull
-    */
-    bool read(uint8_t * buf);
-
-    /**
-    * Try to read an audio packet. During a frame, only a single reading (you can't write and read an audio packet during the same frame)can be done using this method. Warning: Non Blocking
-    *
-    * @param buf pointer on a buffer which will be filled if an audio packet is available
-    *
-    * @returns true if successfull
-    */
-    bool readNB(uint8_t * buf);
-
-    /**
-     * read last received packet if some.
-     * @param buf pointer on a buffer which will be filled if an audio packet is available
-     *
-     * @returns the packet length
-     */
-    uint32_t readSync(uint8_t *buf);
-
-    /**
-    * Write an audio packet. During a frame, only a single writing (you can't write and read an audio packet during the same frame)can be done using this method.
-    *
-    * @param buf pointer on the audio packet which will be sent
-    * @returns true if successful
-    */
-    bool write(uint8_t * buf);
-
-    /** Audio Jitter value*/
-    enum AudioSampleCorrectType {
-        RemoveOneSample = -1,
-        NoCorrection = 0,
-        AddOneSample = 1
-    };
-    /**
-     * Write packet in endpoint fifo. assuming tx fifo is empty
-     * @param buf pointer on the audio packet which will be sent
-     * @param jitter_nb : AudioSampleCorrecttype 
-	 **/
-    void writeSync(uint8_t *buf, AudioSampleCorrectType jitter_nb = NoCorrection );
-
-    /**
-    * Write and read an audio packet at the same time (on the same frame)
-    *
-    * @param buf_read pointer on a buffer which will be filled with an audio packet
-    * @param buf_write pointer on the audio packet which will be sent
-    * @returns true if successful
-    */
-    bool readWrite(uint8_t * buf_read, uint8_t * buf_write);
-
-
-    /** attach a handler to update the volume
-     *
-     * @param function Function to attach
-     *
-     */
-    void attach(void(*fptr)(void)) {
-        updateVol.attach(fptr);
-    }
-	/** attach a handler to Tx Done
-     *
-     * @param function Function to attach
-     *
-     */
-    void attachTx(void(*fptr)(void)) {
-        txDone.attach(fptr);
-    }
-    /** attach a handler to Rx Done
-     *
-     * @param function Function to attach
-     *
-     */
-    void attachRx(void(*fptr)(void)) {
-        rxDone.attach(fptr);
-    }
-
-    /** Attach a nonstatic void/void member function to update the volume
-     *
-     * @param tptr Object pointer
-     * @param mptr Member function pointer
-     *
-     */
-    template<typename T>
-    void attach(T *tptr, void(T::*mptr)(void)) {
-        updateVol.attach(tptr, mptr);
-    }
-	template<typename T>
-	void attachTx(T *tptr, void(T::*mptr)(void)) {
-        txDone.attach(tptr, mptr);
-    }
-    template<typename T>
-	void attachRx(T *tptr, void(T::*mptr)(void)) {
-        rxDone.attach(tptr, mptr);
-    }
-
-
-protected:
-
-    /*
-    * Called by USBDevice layer. Set configuration of the device.
-    * For instance, you can add all endpoints that you need on this function.
-    *
-    * @param configuration Number of the configuration
-    * @returns true if class handles this request
-    */
-    virtual bool USBCallback_setConfiguration(uint8_t configuration);
-
-    /*
-    * Called by USBDevice on Endpoint0 request. Warning: Called in ISR context
-    * This is used to handle extensions to standard requests
-    * and class specific requests
-    *
-    * @returns true if class handles this request
-    */
-    virtual bool USBCallback_request();
-
-    /*
-    * Get string product descriptor
-    *
-    * @returns pointer to the string product descriptor
-    */
-    virtual uint8_t * stringIproductDesc();
-
-    /*
-    * Get string interface descriptor
-    *
-    * @returns pointer to the string interface descriptor
-    */
-    virtual uint8_t * stringIinterfaceDesc();
-
-    /*
-    * Get configuration descriptor
-    *
-    * @returns pointer to the configuration descriptor
-    */
-    virtual uint8_t * configurationDesc();
-
-    /*
-     * Called by USBDevice layer. Set interface/alternate of the device.
-     *
-     * @param interface Number of the interface to be configured
-     * @param alternate Number of the alternate to be configured
-     * @returns true if class handles this request
-     */
-    virtual bool USBCallback_setInterface(uint16_t interface, uint8_t alternate);
-
-    /*
-    * Called by USBDevice on Endpoint0 request completion
-    * if the 'notify' flag has been set to true. Warning: Called in ISR context
-    *
-    * In this case it is used to indicate that a HID report has
-    * been received from the host on endpoint 0
-    *
-    * @param buf buffer received on endpoint 0
-    * @param length length of this buffer
-    */
-    virtual void USBCallback_requestCompleted(uint8_t * buf, uint32_t length);
-
-    /*
-    * Callback called on each Start of Frame event
-    */
-    virtual void SOF(int frameNumber);
-
-    /*
-    * Callback called when a packet is received
-    */
-    virtual bool EPISO_OUT_callback();
-
-    /*
-    * Callback called when a packet has been sent
-    */
-    virtual bool EPISO_IN_callback();
-
-private:
-
-    // stream available ?
-    volatile bool available;
-
-    // interrupt OUT has been received
-    volatile bool interruptOUT;
-
-    // interrupt IN has been received
-    volatile bool interruptIN;
-
-    // audio packet has been written
-    volatile bool writeIN;
-
-    // FREQ
-    uint32_t FREQ_OUT;
-    uint32_t FREQ_IN;
-
-    // size of the maximum packet for the isochronous endpoint
-    uint32_t PACKET_SIZE_ISO_IN;
-    uint32_t PACKET_SIZE_ISO_OUT;
-
-    // mono, stereo,...
-    uint8_t channel_nb_in;
-    uint8_t channel_nb_out;
-
-    // channel config: master, left, right
-    uint8_t channel_config_in;
-    uint8_t channel_config_out;
-
-    // mute state
-    uint8_t mute;
-
-    // Volume Current Value
-    uint16_t volCur;
-
-    // Volume Minimum Value
-    uint16_t volMin;
-
-    // Volume Maximum Value
-    uint16_t volMax;
-
-    // Volume Resolution
-    uint16_t volRes;
-
-    // Buffer containing one audio packet (to be read)
-    volatile uint8_t * buf_stream_in;
-
-    // Buffer containing one audio packet (to be written)
-    volatile uint8_t * buf_stream_out;
-
-    // callback to update volume
-    Callback<void()> updateVol;
-
-    // callback transmit Done
-    Callback<void()> txDone;
-    // callback transmit Done
-    Callback<void()> rxDone;
-
-    // boolean showing that the SOF handler has been called. Useful for readNB.
-    volatile bool SOF_handler;
-
-    volatile float volume;
-
-};
-
-#endif