diff options
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/USBDevice/USBAudio/USBAudio.cpp')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/USBDevice/USBAudio/USBAudio.cpp | 618 |
1 files changed, 618 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/USBDevice/USBAudio/USBAudio.cpp b/tmk_core/tool/mbed/mbed-sdk/libraries/USBDevice/USBAudio/USBAudio.cpp new file mode 100644 index 0000000000..aab9e774e3 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/USBDevice/USBAudio/USBAudio.cpp @@ -0,0 +1,618 @@ +/* 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. +*/ + +#include "stdint.h" +#include "USBAudio.h" +#include "USBAudio_Types.h" + + + +USBAudio::USBAudio(uint32_t frequency_in, uint8_t channel_nb_in, uint32_t frequency_out, uint8_t channel_nb_out, uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) { + mute = 0; + volCur = 0x0080; + volMin = 0x0000; + volMax = 0x0100; + volRes = 0x0004; + available = false; + + FREQ_IN = frequency_in; + FREQ_OUT = frequency_out; + + this->channel_nb_in = channel_nb_in; + this->channel_nb_out = channel_nb_out; + + // stereo -> *2, mono -> *1 + PACKET_SIZE_ISO_IN = (FREQ_IN / 500) * channel_nb_in; + PACKET_SIZE_ISO_OUT = (FREQ_OUT / 500) * channel_nb_out; + + // STEREO -> left and right + channel_config_in = (channel_nb_in == 1) ? CHANNEL_M : CHANNEL_L + CHANNEL_R; + channel_config_out = (channel_nb_out == 1) ? CHANNEL_M : CHANNEL_L + CHANNEL_R; + + SOF_handler = false; + + buf_stream_out = NULL; + buf_stream_in = NULL; + + interruptOUT = false; + writeIN = false; + interruptIN = false; + available = false; + + volume = 0; + + // connect the device + USBDevice::connect(); +} + +bool USBAudio::read(uint8_t * buf) { + buf_stream_in = buf; + SOF_handler = false; + while (!available || !SOF_handler); + available = false; + return true; +} + +bool USBAudio::readNB(uint8_t * buf) { + buf_stream_in = buf; + SOF_handler = false; + while (!SOF_handler); + if (available) { + available = false; + buf_stream_in = NULL; + return true; + } + return false; +} + +bool USBAudio::readWrite(uint8_t * buf_read, uint8_t * buf_write) { + buf_stream_in = buf_read; + SOF_handler = false; + writeIN = false; + if (interruptIN) { + USBDevice::writeNB(EP3IN, buf_write, PACKET_SIZE_ISO_OUT, PACKET_SIZE_ISO_OUT); + } else { + buf_stream_out = buf_write; + } + while (!available); + if (interruptIN) { + while (!writeIN); + } + while (!SOF_handler); + return true; +} + + +bool USBAudio::write(uint8_t * buf) { + writeIN = false; + SOF_handler = false; + if (interruptIN) { + USBDevice::writeNB(EP3IN, buf, PACKET_SIZE_ISO_OUT, PACKET_SIZE_ISO_OUT); + } else { + buf_stream_out = buf; + } + while (!SOF_handler); + if (interruptIN) { + while (!writeIN); + } + return true; +} + + +float USBAudio::getVolume() { + return (mute) ? 0.0 : volume; +} + + +bool USBAudio::EPISO_OUT_callback() { + uint32_t size = 0; + interruptOUT = true; + if (buf_stream_in != NULL) { + readEP(EP3OUT, (uint8_t *)buf_stream_in, &size, PACKET_SIZE_ISO_IN); + available = true; + buf_stream_in = NULL; + } + readStart(EP3OUT, PACKET_SIZE_ISO_IN); + return false; +} + + +bool USBAudio::EPISO_IN_callback() { + interruptIN = true; + writeIN = true; + return true; +} + + + +// Called in ISR context on each start of frame +void USBAudio::SOF(int frameNumber) { + uint32_t size = 0; + + if (!interruptOUT) { + // read the isochronous endpoint + if (buf_stream_in != NULL) { + if (USBDevice::readEP_NB(EP3OUT, (uint8_t *)buf_stream_in, &size, PACKET_SIZE_ISO_IN)) { + if (size) { + available = true; + readStart(EP3OUT, PACKET_SIZE_ISO_IN); + buf_stream_in = NULL; + } + } + } + } + + if (!interruptIN) { + // write if needed + if (buf_stream_out != NULL) { + USBDevice::writeNB(EP3IN, (uint8_t *)buf_stream_out, PACKET_SIZE_ISO_OUT, PACKET_SIZE_ISO_OUT); + buf_stream_out = NULL; + } + } + + SOF_handler = true; +} + + +// Called in ISR context +// Set configuration. Return false if the configuration is not supported. +bool USBAudio::USBCallback_setConfiguration(uint8_t configuration) { + if (configuration != DEFAULT_CONFIGURATION) { + return false; + } + + // Configure isochronous endpoint + realiseEndpoint(EP3OUT, PACKET_SIZE_ISO_IN, ISOCHRONOUS); + realiseEndpoint(EP3IN, PACKET_SIZE_ISO_OUT, ISOCHRONOUS); + + // activate readings on this endpoint + readStart(EP3OUT, PACKET_SIZE_ISO_IN); + return true; +} + + +// Called in ISR context +// Set alternate setting. Return false if the alternate setting is not supported +bool USBAudio::USBCallback_setInterface(uint16_t interface, uint8_t alternate) { + if (interface == 0 && alternate == 0) { + return true; + } + if (interface == 1 && (alternate == 0 || alternate == 1)) { + return true; + } + if (interface == 2 && (alternate == 0 || alternate == 1)) { + return true; + } + return false; +} + + + +// Called in ISR context +// Called by USBDevice on Endpoint0 request +// This is used to handle extensions to standard requests and class specific requests. +// Return true if class handles this request +bool USBAudio::USBCallback_request() { + bool success = false; + CONTROL_TRANSFER * transfer = getTransferPtr(); + + // Process class-specific requests + if (transfer->setup.bmRequestType.Type == CLASS_TYPE) { + + // Feature Unit: Interface = 0, ID = 2 + if (transfer->setup.wIndex == 0x0200) { + + // Master Channel + if ((transfer->setup.wValue & 0xff) == 0) { + + switch (transfer->setup.wValue >> 8) { + case MUTE_CONTROL: + switch (transfer->setup.bRequest) { + case REQUEST_GET_CUR: + transfer->remaining = 1; + transfer->ptr = &mute; + transfer->direction = DEVICE_TO_HOST; + success = true; + break; + + case REQUEST_SET_CUR: + transfer->remaining = 1; + transfer->notify = true; + transfer->direction = HOST_TO_DEVICE; + success = true; + break; + default: + break; + } + break; + case VOLUME_CONTROL: + switch (transfer->setup.bRequest) { + case REQUEST_GET_CUR: + transfer->remaining = 2; + transfer->ptr = (uint8_t *)&volCur; + transfer->direction = DEVICE_TO_HOST; + success = true; + break; + case REQUEST_GET_MIN: + transfer->remaining = 2; + transfer->ptr = (uint8_t *)&volMin; + transfer->direction = DEVICE_TO_HOST; + success = true; + break; + case REQUEST_GET_MAX: + transfer->remaining = 2; + transfer->ptr = (uint8_t *)&volMax; + transfer->direction = DEVICE_TO_HOST; + success = true; + break; + case REQUEST_GET_RES: + transfer->remaining = 2; + transfer->ptr = (uint8_t *)&volRes; + transfer->direction = DEVICE_TO_HOST; + success = true; + break; + + case REQUEST_SET_CUR: + transfer->remaining = 2; + transfer->notify = true; + transfer->direction = HOST_TO_DEVICE; + success = true; + break; + case REQUEST_SET_MIN: + transfer->remaining = 2; + transfer->notify = true; + transfer->direction = HOST_TO_DEVICE; + success = true; + break; + case REQUEST_SET_MAX: + transfer->remaining = 2; + transfer->notify = true; + transfer->direction = HOST_TO_DEVICE; + success = true; + break; + case REQUEST_SET_RES: + transfer->remaining = 2; + transfer->notify = true; + transfer->direction = HOST_TO_DEVICE; + success = true; + break; + } + break; + default: + break; + } + } + } + } + return success; +} + + +// Called in ISR context when a data OUT stage has been performed +void USBAudio::USBCallback_requestCompleted(uint8_t * buf, uint32_t length) { + if ((length == 1) || (length == 2)) { + uint16_t data = (length == 1) ? *buf : *((uint16_t *)buf); + CONTROL_TRANSFER * transfer = getTransferPtr(); + switch (transfer->setup.wValue >> 8) { + case MUTE_CONTROL: + switch (transfer->setup.bRequest) { + case REQUEST_SET_CUR: + mute = data & 0xff; + updateVol.call(); + break; + default: + break; + } + break; + case VOLUME_CONTROL: + switch (transfer->setup.bRequest) { + case REQUEST_SET_CUR: + volCur = data; + volume = (float)volCur/(float)volMax; + updateVol.call(); + break; + default: + break; + } + break; + default: + break; + } + } +} + + + +#define TOTAL_DESCRIPTOR_LENGTH ((1 * CONFIGURATION_DESCRIPTOR_LENGTH) \ + + (5 * INTERFACE_DESCRIPTOR_LENGTH) \ + + (1 * CONTROL_INTERFACE_DESCRIPTOR_LENGTH + 1) \ + + (2 * INPUT_TERMINAL_DESCRIPTOR_LENGTH) \ + + (1 * FEATURE_UNIT_DESCRIPTOR_LENGTH) \ + + (2 * OUTPUT_TERMINAL_DESCRIPTOR_LENGTH) \ + + (2 * STREAMING_INTERFACE_DESCRIPTOR_LENGTH) \ + + (2 * FORMAT_TYPE_I_DESCRIPTOR_LENGTH) \ + + (2 * (ENDPOINT_DESCRIPTOR_LENGTH + 2)) \ + + (2 * STREAMING_ENDPOINT_DESCRIPTOR_LENGTH) ) + +#define TOTAL_CONTROL_INTF_LENGTH (CONTROL_INTERFACE_DESCRIPTOR_LENGTH + 1 + \ + 2*INPUT_TERMINAL_DESCRIPTOR_LENGTH + \ + FEATURE_UNIT_DESCRIPTOR_LENGTH + \ + 2*OUTPUT_TERMINAL_DESCRIPTOR_LENGTH) + +uint8_t * USBAudio::configurationDesc() { + static uint8_t configDescriptor[] = { + // Configuration 1 + CONFIGURATION_DESCRIPTOR_LENGTH, // bLength + CONFIGURATION_DESCRIPTOR, // bDescriptorType + LSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (LSB) + MSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (MSB) + 0x03, // bNumInterfaces + DEFAULT_CONFIGURATION, // bConfigurationValue + 0x00, // iConfiguration + 0x80, // bmAttributes + 50, // bMaxPower + + // Interface 0, Alternate Setting 0, Audio Control + INTERFACE_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR, // bDescriptorType + 0x00, // bInterfaceNumber + 0x00, // bAlternateSetting + 0x00, // bNumEndpoints + AUDIO_CLASS, // bInterfaceClass + SUBCLASS_AUDIOCONTROL, // bInterfaceSubClass + 0x00, // bInterfaceProtocol + 0x00, // iInterface + + + // Audio Control Interface + CONTROL_INTERFACE_DESCRIPTOR_LENGTH + 1,// bLength + INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType + CONTROL_HEADER, // bDescriptorSubtype + LSB(0x0100), // bcdADC (LSB) + MSB(0x0100), // bcdADC (MSB) + LSB(TOTAL_CONTROL_INTF_LENGTH), // wTotalLength + MSB(TOTAL_CONTROL_INTF_LENGTH), // wTotalLength + 0x02, // bInCollection + 0x01, // baInterfaceNr + 0x02, // baInterfaceNr + + // Audio Input Terminal (Speaker) + INPUT_TERMINAL_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType + CONTROL_INPUT_TERMINAL, // bDescriptorSubtype + 0x01, // bTerminalID + LSB(TERMINAL_USB_STREAMING), // wTerminalType + MSB(TERMINAL_USB_STREAMING), // wTerminalType + 0x00, // bAssocTerminal + channel_nb_in, // bNrChannels + (uint8_t)(LSB(channel_config_in)), // wChannelConfig + (uint8_t)(MSB(channel_config_in)), // wChannelConfig + 0x00, // iChannelNames + 0x00, // iTerminal + + // Audio Feature Unit (Speaker) + FEATURE_UNIT_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType + CONTROL_FEATURE_UNIT, // bDescriptorSubtype + 0x02, // bUnitID + 0x01, // bSourceID + 0x01, // bControlSize + CONTROL_MUTE | + CONTROL_VOLUME, // bmaControls(0) + 0x00, // bmaControls(1) + 0x00, // iTerminal + + // Audio Output Terminal (Speaker) + OUTPUT_TERMINAL_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType + CONTROL_OUTPUT_TERMINAL, // bDescriptorSubtype + 0x03, // bTerminalID + LSB(TERMINAL_SPEAKER), // wTerminalType + MSB(TERMINAL_SPEAKER), // wTerminalType + 0x00, // bAssocTerminal + 0x02, // bSourceID + 0x00, // iTerminal + + + // Audio Input Terminal (Microphone) + INPUT_TERMINAL_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType + CONTROL_INPUT_TERMINAL, // bDescriptorSubtype + 0x04, // bTerminalID + LSB(TERMINAL_MICROPHONE), // wTerminalType + MSB(TERMINAL_MICROPHONE), // wTerminalType + 0x00, // bAssocTerminal + channel_nb_out, // bNrChannels + (uint8_t)(LSB(channel_config_out)), // wChannelConfig + (uint8_t)(MSB(channel_config_out)), // wChannelConfig + 0x00, // iChannelNames + 0x00, // iTerminal + + // Audio Output Terminal (Microphone) + OUTPUT_TERMINAL_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType + CONTROL_OUTPUT_TERMINAL, // bDescriptorSubtype + 0x05, // bTerminalID + LSB(TERMINAL_USB_STREAMING), // wTerminalType + MSB(TERMINAL_USB_STREAMING), // wTerminalType + 0x00, // bAssocTerminal + 0x04, // bSourceID + 0x00, // iTerminal + + + + + + + // Interface 1, Alternate Setting 0, Audio Streaming - Zero Bandwith + INTERFACE_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR, // bDescriptorType + 0x01, // bInterfaceNumber + 0x00, // bAlternateSetting + 0x00, // bNumEndpoints + AUDIO_CLASS, // bInterfaceClass + SUBCLASS_AUDIOSTREAMING, // bInterfaceSubClass + 0x00, // bInterfaceProtocol + 0x00, // iInterface + + // Interface 1, Alternate Setting 1, Audio Streaming - Operational + INTERFACE_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR, // bDescriptorType + 0x01, // bInterfaceNumber + 0x01, // bAlternateSetting + 0x01, // bNumEndpoints + AUDIO_CLASS, // bInterfaceClass + SUBCLASS_AUDIOSTREAMING, // bInterfaceSubClass + 0x00, // bInterfaceProtocol + 0x00, // iInterface + + // Audio Streaming Interface + STREAMING_INTERFACE_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType + STREAMING_GENERAL, // bDescriptorSubtype + 0x01, // bTerminalLink + 0x00, // bDelay + LSB(FORMAT_PCM), // wFormatTag + MSB(FORMAT_PCM), // wFormatTag + + // Audio Type I Format + FORMAT_TYPE_I_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType + STREAMING_FORMAT_TYPE, // bDescriptorSubtype + FORMAT_TYPE_I, // bFormatType + channel_nb_in, // bNrChannels + 0x02, // bSubFrameSize + 16, // bBitResolution + 0x01, // bSamFreqType + (uint8_t)(LSB(FREQ_IN)), // tSamFreq + (uint8_t)((FREQ_IN >> 8) & 0xff), // tSamFreq + (uint8_t)((FREQ_IN >> 16) & 0xff), // tSamFreq + + // Endpoint - Standard Descriptor + ENDPOINT_DESCRIPTOR_LENGTH + 2, // bLength + ENDPOINT_DESCRIPTOR, // bDescriptorType + PHY_TO_DESC(EPISO_OUT), // bEndpointAddress + E_ISOCHRONOUS, // bmAttributes + (uint8_t)(LSB(PACKET_SIZE_ISO_IN)), // wMaxPacketSize + (uint8_t)(MSB(PACKET_SIZE_ISO_IN)), // wMaxPacketSize + 0x01, // bInterval + 0x00, // bRefresh + 0x00, // bSynchAddress + + // Endpoint - Audio Streaming + STREAMING_ENDPOINT_DESCRIPTOR_LENGTH, // bLength + ENDPOINT_DESCRIPTOR_TYPE, // bDescriptorType + ENDPOINT_GENERAL, // bDescriptor + 0x00, // bmAttributes + 0x00, // bLockDelayUnits + LSB(0x0000), // wLockDelay + MSB(0x0000), // wLockDelay + + + + + + + + // Interface 1, Alternate Setting 0, Audio Streaming - Zero Bandwith + INTERFACE_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR, // bDescriptorType + 0x02, // bInterfaceNumber + 0x00, // bAlternateSetting + 0x00, // bNumEndpoints + AUDIO_CLASS, // bInterfaceClass + SUBCLASS_AUDIOSTREAMING, // bInterfaceSubClass + 0x00, // bInterfaceProtocol + 0x00, // iInterface + + // Interface 1, Alternate Setting 1, Audio Streaming - Operational + INTERFACE_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR, // bDescriptorType + 0x02, // bInterfaceNumber + 0x01, // bAlternateSetting + 0x01, // bNumEndpoints + AUDIO_CLASS, // bInterfaceClass + SUBCLASS_AUDIOSTREAMING, // bInterfaceSubClass + 0x00, // bInterfaceProtocol + 0x00, // iInterface + + // Audio Streaming Interface + STREAMING_INTERFACE_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType + SUBCLASS_AUDIOCONTROL, // bDescriptorSubtype + 0x05, // bTerminalLink (output terminal microphone) + 0x01, // bDelay + 0x01, // wFormatTag + 0x00, // wFormatTag + + // Audio Type I Format + FORMAT_TYPE_I_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType + SUBCLASS_AUDIOSTREAMING, // bDescriptorSubtype + FORMAT_TYPE_I, // bFormatType + channel_nb_out, // bNrChannels + 0x02, // bSubFrameSize + 0x10, // bBitResolution + 0x01, // bSamFreqType + (uint8_t)(LSB(FREQ_OUT)), // tSamFreq + (uint8_t)((FREQ_OUT >> 8) & 0xff), // tSamFreq + (uint8_t)((FREQ_OUT >> 16) & 0xff), // tSamFreq + + // Endpoint - Standard Descriptor + ENDPOINT_DESCRIPTOR_LENGTH + 2, // bLength + ENDPOINT_DESCRIPTOR, // bDescriptorType + PHY_TO_DESC(EPISO_IN), // bEndpointAddress + E_ISOCHRONOUS, // bmAttributes + (uint8_t)(LSB(PACKET_SIZE_ISO_OUT)), // wMaxPacketSize + (uint8_t)(MSB(PACKET_SIZE_ISO_OUT)), // wMaxPacketSize + 0x01, // bInterval + 0x00, // bRefresh + 0x00, // bSynchAddress + + // Endpoint - Audio Streaming + STREAMING_ENDPOINT_DESCRIPTOR_LENGTH, // bLength + ENDPOINT_DESCRIPTOR_TYPE, // bDescriptorType + ENDPOINT_GENERAL, // bDescriptor + 0x00, // bmAttributes + 0x00, // bLockDelayUnits + LSB(0x0000), // wLockDelay + MSB(0x0000), // wLockDelay + + // Terminator + 0 // bLength + }; + return configDescriptor; +} + +uint8_t * USBAudio::stringIinterfaceDesc() { + static uint8_t stringIinterfaceDescriptor[] = { + 0x0c, //bLength + STRING_DESCRIPTOR, //bDescriptorType 0x03 + 'A',0,'u',0,'d',0,'i',0,'o',0 //bString iInterface - Audio + }; + return stringIinterfaceDescriptor; +} + +uint8_t * USBAudio::stringIproductDesc() { + static uint8_t stringIproductDescriptor[] = { + 0x16, //bLength + STRING_DESCRIPTOR, //bDescriptorType 0x03 + 'M',0,'b',0,'e',0,'d',0,' ',0,'A',0,'u',0,'d',0,'i',0,'o',0 //bString iProduct - Mbed Audio + }; + return stringIproductDescriptor; +} |