parasiTstudio
/
BALibrary_parasitstudio
forked from wirtz/BALibrary
3
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

cleanup up LibMemoryManagement.*

Browse Source
master
Steve Lascos 7 years ago
parent 9fd96aa5e3
commit 7cf4b57bc6
6 changed files with 288 additions and 123 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 14
      src/AudioEffectAnalogDelay.cpp
  2. 6
      src/BAAudioControlWM8731.h
  3. 2
      src/BASpiMemory.h
  4. 49
      src/LibBasicFunctions.cpp
  5. 151
      src/LibMemoryManagement.cpp
  6. 189
      src/LibMemoryManagement.h

14
src/AudioEffectAnalogDelay.cpp
Unescape View File

@ -71,7 +71,7 @@ void AudioEffectAnalogDelay::update(void)
m_callCount++; m_callCount++;
Serial.println(String("AudioEffectAnalgDelay::update: ") + m_callCount); Serial.println(String("AudioEffectAnalgDelay::update: ") + m_callCount);
m_memory->getSlot()->printStatus(); //m_memory->getSlot()->printStatus();
audio_block_t *blockToRelease = m_memory->addBlock(inputAudioBlock); audio_block_t *blockToRelease = m_memory->addBlock(inputAudioBlock);
// if (inputAudioBlock) { // if (inputAudioBlock) {
@ -113,7 +113,7 @@ void AudioEffectAnalogDelay::update(void)
if (!blockToOutput) continue; // skip this channel due to failure if (!blockToOutput) continue; // skip this channel due to failure
// copy over data // copy over data
m_memory->getSamples(blockToOutput, m_channelOffsets[channel]); m_memory->getSamples(blockToOutput, m_channelOffsets[channel]);
//m_memory->read16(blockToOutput->data, 0, m_channelOffsets[channel], AUDIO_BLOCK_SAMPLES);
transmit(blockToOutput); transmit(blockToOutput);
release(blockToOutput); release(blockToOutput);
} }
@ -126,6 +126,8 @@ bool AudioEffectAnalogDelay::delay(unsigned channel, float milliseconds)
size_t delaySamples = calcAudioSamples(milliseconds); size_t delaySamples = calcAudioSamples(milliseconds);
if (!m_memory) { Serial.println("delay(): m_memory is not valid"); }
if (!m_externalMemory) { if (!m_externalMemory) {
// internal memory // internal memory
QueuePosition queuePosition = calcQueuePosition(milliseconds); QueuePosition queuePosition = calcQueuePosition(milliseconds);
@ -134,10 +136,11 @@ bool AudioEffectAnalogDelay::delay(unsigned channel, float milliseconds)
// external memory // external memory
Serial.println(String("CONFIG: delay:") + delaySamples); Serial.println(String("CONFIG: delay:") + delaySamples);
ExtMemSlot *slot = m_memory->getSlot(); ExtMemSlot *slot = m_memory->getSlot();
if (!slot) { Serial.println("ERROR: slot ptr is not valid"); }
if (!slot->isEnabled()) { if (!slot->isEnabled()) {
slot->enable(); slot->enable();
} else { Serial.println("WEIRD: slot was not enabled");
Serial.println("ERROR: slot ptr is not valid");
} }
} }
@ -151,12 +154,15 @@ bool AudioEffectAnalogDelay::delay(unsigned channel, size_t delaySamples)
if (channel > MAX_DELAY_CHANNELS-1) // channel id too high if (channel > MAX_DELAY_CHANNELS-1) // channel id too high
return false; return false;
if (!m_memory) { Serial.println("delay(): m_memory is not valid"); }
if (!m_externalMemory) { if (!m_externalMemory) {
// internal memory // internal memory
QueuePosition queuePosition = calcQueuePosition(delaySamples); QueuePosition queuePosition = calcQueuePosition(delaySamples);
Serial.println(String("CONFIG: delay:") + delaySamples + String(" queue position ") + queuePosition.index + String(":") + queuePosition.offset); Serial.println(String("CONFIG: delay:") + delaySamples + String(" queue position ") + queuePosition.index + String(":") + queuePosition.offset);
} else { } else {
// external memory // external memory
Serial.println(String("CONFIG: delay:") + delaySamples);
ExtMemSlot *slot = m_memory->getSlot(); ExtMemSlot *slot = m_memory->getSlot();
if (!slot->isEnabled()) { if (!slot->isEnabled()) {
slot->enable(); slot->enable();

6
src/BAAudioControlWM8731.h
Unescape View File

@ -22,8 +22,8 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>. * along with this program. If not, see <http://www.gnu.org/licenses/>.
*****************************************************************************/ *****************************************************************************/
#ifndef __INC_BAAUDIOCONTROLWM8731_H #ifndef __BAAUDIOCONTROLWM8731_H
#define __INC_BAAUDIOCONTROLWM8731_H #define __BAAUDIOCONTROLWM8731_H
namespace BAGuitar { namespace BAGuitar {
@ -128,4 +128,4 @@ private:
} /* namespace BAGuitar */ } /* namespace BAGuitar */
#endif /* __INC_BAAUDIOCONTROLWM8731_H */ #endif /* __BAAUDIOCONTROLWM8731_H */

2
src/BASpiMemory.h
Unescape View File

@ -59,7 +59,7 @@ public:
void write16(size_t address, uint16_t data); void write16(size_t address, uint16_t data);
void write16(size_t address, uint16_t *data, size_t numWords); void write16(size_t address, uint16_t *data, size_t numWords);
void zero16(size_t address, size_t numBytes); void zero16(size_t address, size_t numWords);
/// read a single 8-bit data word from the specified address /// read a single 8-bit data word from the specified address
/// @param address the address in the SPI RAM to read from /// @param address the address in the SPI RAM to read from

49
src/LibBasicFunctions.cpp
Unescape View File

@ -50,9 +50,10 @@ AudioDelay::AudioDelay(float maxDelayTimeMs)
} }
AudioDelay::AudioDelay(ExtMemSlot *slot) AudioDelay::AudioDelay(ExtMemSlot *slot)
: m_slot(slot) //: m_slot(slot)
{ {
m_type = MemType::MEM_EXTERNAL; m_type = MemType::MEM_EXTERNAL;
m_slot = slot;
} }
AudioDelay::~AudioDelay() AudioDelay::~AudioDelay()
@ -77,15 +78,24 @@ audio_block_t* AudioDelay::addBlock(audio_block_t *block)
return blockToRelease; return blockToRelease;
} else { } else {
// EXTERNAL memory // EXTERNAL memory
if (!m_slot) { Serial.println("addBlock(): m_slot is not valid"); }
//m_slot->writeAdvance16(block->data, AUDIO_BLOCK_SAMPLES); if (block) {
// Audio is stored in reverse in block so we need to write it backwards to external memory
// to maintain temporal coherency.
// int16_t *srcPtr = block->data + AUDIO_BLOCK_SAMPLES - 1;
// for (int i=0; i<AUDIO_BLOCK_SAMPLES; i++) {
// m_slot->writeAdvance16(*srcPtr);
// srcPtr--;
// }
int16_t *srcPtr = block->data;
for (int i=0; i<AUDIO_BLOCK_SAMPLES; i++) {
m_slot->writeAdvance16(*srcPtr);
srcPtr++;
}
// Audio is stored in reverse in block so we need to write it backwards to external memory
// to maintain temporal coherency.
int16_t *srcPtr = block->data + AUDIO_BLOCK_SAMPLES - 1;
for (int i=0; i<AUDIO_BLOCK_SAMPLES; i++) {
m_slot->writeAdvance16(*srcPtr);
srcPtr--;
} }
return block; return block;
@ -140,25 +150,36 @@ bool AudioDelay::getSamples(audio_block_t *dest, size_t offset, size_t numSample
} else { } else {
// EXTERNAL Memory // EXTERNAL Memory
if (numSamples <= m_slot->size() ) { if (numSamples*sizeof(int16_t) <= m_slot->size() ) {
int currentPosition = (int)m_slot->getWritePosition() - (int)AUDIO_BLOCK_SAMPLES; int currentPositionBytes = (int)m_slot->getWritePosition() - (int)(AUDIO_BLOCK_SAMPLES*sizeof(int16_t));
size_t offsetBytes = offset * sizeof(int16_t);
if ((int)offset <= currentPosition) { if ((int)offsetBytes <= currentPositionBytes) {
m_slot->setReadPosition(currentPosition - offset); m_slot->setReadPosition(currentPositionBytes - offsetBytes);
} else { } else {
// It's going to wrap around to the end of the slot // It's going to wrap around to the end of the slot
int readPosition = (int)m_slot->size() + currentPosition - offset; int readPosition = (int)m_slot->size() + currentPositionBytes - offsetBytes;
m_slot->setReadPosition((size_t)readPosition); m_slot->setReadPosition((size_t)readPosition);
} }
m_slot->printStatus();
// write the data to the destination block in reverse // write the data to the destination block in reverse
int16_t *destPtr = dest->data + AUDIO_BLOCK_SAMPLES-1; // int16_t *destPtr = dest->data + AUDIO_BLOCK_SAMPLES-1;
// for (int i=0; i<AUDIO_BLOCK_SAMPLES; i++) {
// *destPtr = m_slot->readAdvance16();
// destPtr--;
// }
int16_t *destPtr = dest->data;
for (int i=0; i<AUDIO_BLOCK_SAMPLES; i++) { for (int i=0; i<AUDIO_BLOCK_SAMPLES; i++) {
*destPtr = m_slot->readAdvance16(); *destPtr = m_slot->readAdvance16();
destPtr++;
} }
return true; return true;
} else { } else {
// numSampmles is > than total slot size // numSampmles is > than total slot size
Serial.println("getSamples(): ERROR numSamples > total slot size");
return false; return false;
} }
} }

151
src/LibMemoryManagement.cpp
Unescape View File

@ -1,9 +1,26 @@
/*
* LibMemoryManagement.cpp
*
* Created on: Jan 19, 2018
* Author: slascos
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.*
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <cstring> #include <cstring>
#include <new> #include <new>
#include "Audio.h" #include "Audio.h"
#include "LibMemoryManagement.h" #include "LibMemoryManagement.h"
namespace BAGuitar { namespace BAGuitar {
@ -19,12 +36,21 @@ bool ExtMemSlot::clear()
return true; return true;
} }
bool ExtMemSlot::write16(size_t offset, int16_t *dataPtr, size_t dataSize) bool ExtMemSlot::setWritePosition(size_t offsetBytes)
{
if (m_start + offsetBytes <= m_end) {
m_currentWrPosition = m_start + offsetBytes;
return true;
} else { return false; }
}
bool ExtMemSlot::write16(size_t offsetBytes, int16_t *dest, size_t numWords)
{ {
if (!m_valid) { return false; } if (!m_valid) { return false; }
size_t writeStart = m_start + offset; size_t writeStart = m_start + offsetBytes; // 2x because int16 is two bytes per data
if ((writeStart + dataSize-1) <= m_end) { size_t numBytes = sizeof(int16_t)*numWords;
m_spi->write16(writeStart, reinterpret_cast<uint16_t*>(dataPtr), dataSize); // cast audio data to uint if ((writeStart + numBytes-1) <= m_end) {
m_spi->write16(writeStart, reinterpret_cast<uint16_t*>(dest), numWords); // cast audio data to uint
return true; return true;
} else { } else {
// this would go past the end of the memory slot, do not perform the write // this would go past the end of the memory slot, do not perform the write
@ -32,12 +58,23 @@ bool ExtMemSlot::write16(size_t offset, int16_t *dataPtr, size_t dataSize)
} }
} }
bool ExtMemSlot::zero16(size_t offset, size_t dataSize) bool ExtMemSlot::setReadPosition(size_t offsetBytes)
{
if (m_start + offsetBytes <= m_end) {
m_currentRdPosition = m_start + offsetBytes;
return true;
} else {
return false;
}
}
bool ExtMemSlot::zero16(size_t offsetBytes, size_t numWords)
{ {
if (!m_valid) { return false; } if (!m_valid) { return false; }
size_t writeStart = m_start + offset; size_t writeStart = m_start + offsetBytes;
if ((writeStart + dataSize-1) <= m_end) { size_t numBytes = sizeof(int16_t)*numWords;
m_spi->zero16(writeStart, dataSize); // cast audio data to uint if ((writeStart + numBytes-1) <= m_end) {
m_spi->zero16(writeStart, numWords); // cast audio data to uint
return true; return true;
} else { } else {
// this would go past the end of the memory slot, do not perform the write // this would go past the end of the memory slot, do not perform the write
@ -45,16 +82,17 @@ bool ExtMemSlot::zero16(size_t offset, size_t dataSize)
} }
} }
bool ExtMemSlot::read16(int16_t *dest, size_t srcOffset, size_t numData) bool ExtMemSlot::read16(int16_t *dest, size_t offsetBytes, size_t numWords)
{ {
if (!dest) return false; // invalid destination if (!dest) return false; // invalid destination
size_t readOffset = m_start + srcOffset; size_t readOffset = m_start + offsetBytes;
size_t numBytes = sizeof(int16_t)*numWords;
if ((readOffset + (numData*sizeof(int16_t))-1) <= m_end) { if ((readOffset + numBytes-1) <= m_end) {
m_spi->read16(readOffset, reinterpret_cast<uint16_t*>(dest), numData); m_spi->read16(readOffset, reinterpret_cast<uint16_t*>(dest), numWords);
return true; return true;
} else { } else {
// this would go past the end of the memory slot, do not perform the write // this would go past the end of the memory slot, do not perform the read
return false; return false;
} }
} }
@ -62,8 +100,8 @@ bool ExtMemSlot::read16(int16_t *dest, size_t srcOffset, size_t numData)
uint16_t ExtMemSlot::readAdvance16() uint16_t ExtMemSlot::readAdvance16()
{ {
uint16_t val = m_spi->read16(m_currentRdPosition); uint16_t val = m_spi->read16(m_currentRdPosition);
if (m_currentRdPosition < m_end) { if (m_currentRdPosition < m_end-1) {
m_currentRdPosition++; m_currentRdPosition +=2; // position is in bytes and we read two
} else { } else {
m_currentRdPosition = m_start; m_currentRdPosition = m_start;
} }
@ -71,70 +109,65 @@ uint16_t ExtMemSlot::readAdvance16()
} }
//void ExtMemSlot::read16FromPast(int16_t *dest, size_t currentOffset, size_t numData) bool ExtMemSlot::writeAdvance16(int16_t *src, size_t numWords)
//{
// size_t readStart;
// if (m_currentPosition - currentOffset >= m_start) {
// readStart = m_currentPosition - currentOffset;
// } else {
// // this offset will wrap the memory slot
// size_t numBytesToStart = m_currentPosition;
// readStart = m_end - (currentOffset - numBytesToStart);
// }
// m_spi->read16(readStart, reinterpret_cast<uint16_t*>(dest), numData);
//}
bool ExtMemSlot::writeAdvance16(int16_t *dataPtr, size_t dataSize)
{ {
if (!m_valid) { return false; } if (!m_valid) { return false; }
if (m_currentWrPosition + dataSize-1 <= m_end) { size_t numBytes = sizeof(int16_t)*numWords;
if (m_currentWrPosition + numBytes-1 <= m_end) {
// entire block fits in memory slot without wrapping // entire block fits in memory slot without wrapping
m_spi->write16(m_currentWrPosition, reinterpret_cast<uint16_t*>(dataPtr), dataSize); // cast audio data to uint. m_spi->write16(m_currentWrPosition, reinterpret_cast<uint16_t*>(src), numWords); // cast audio data to uint.
m_currentWrPosition += dataSize; m_currentWrPosition += numBytes;
} else { } else {
// this write will wrap the memory slot // this write will wrap the memory slot
size_t numBytes = m_end - m_currentWrPosition + 1; size_t wrBytes = m_end - m_currentWrPosition + 1;
m_spi->write16(m_currentWrPosition, reinterpret_cast<uint16_t*>(dataPtr), numBytes); size_t wrDataNum = wrBytes >> 1; // divide by two to get the number of data
size_t remainingBytes = dataSize - numBytes; // calculate the remaining bytes m_spi->write16(m_currentWrPosition, reinterpret_cast<uint16_t*>(src), wrDataNum);
m_spi->write16(m_start, reinterpret_cast<uint16_t*>(dataPtr + numBytes), remainingBytes); // write remaining bytes are start size_t remainingData = numWords - wrDataNum;
m_currentWrPosition = m_start + remainingBytes; m_spi->write16(m_start, reinterpret_cast<uint16_t*>(src + wrDataNum), remainingData); // write remaining bytes are start
m_currentWrPosition = m_start + (remainingData*sizeof(int16_t));
} }
return true; return true;
} }
bool ExtMemSlot::writeAdvance16(int16_t data)
bool ExtMemSlot::zeroAdvance16(size_t numWords)
{ {
if (!m_valid) { return false; } if (!m_valid) { return false; }
size_t numBytes = 2*numWords;
if (m_currentWrPosition + numBytes-1 <= m_end) {
// entire block fits in memory slot without wrapping
m_spi->zero16(m_currentWrPosition, numWords); // cast audio data to uint.
m_currentWrPosition += numBytes;
m_spi->write16(m_currentWrPosition, static_cast<uint16_t>(data));
if (m_currentWrPosition < m_end) {
m_currentWrPosition++;
} else { } else {
m_currentWrPosition = m_start; // this write will wrap the memory slot
size_t wrBytes = m_end - m_currentWrPosition + 1;
size_t wrDataNum = wrBytes >> 1;
m_spi->zero16(m_currentWrPosition, wrDataNum);
size_t remainingWords = numWords - wrDataNum; // calculate the remaining bytes
m_spi->zero16(m_start, remainingWords); // write remaining bytes are start
m_currentWrPosition = m_start + remainingWords*sizeof(int16_t);
} }
return true; return true;
} }
bool ExtMemSlot::zeroAdvance16(size_t dataSize)
bool ExtMemSlot::writeAdvance16(int16_t data)
{ {
if (!m_valid) { return false; } if (!m_valid) { return false; }
if (m_currentWrPosition + dataSize-1 <= m_end) {
// entire block fits in memory slot without wrapping
m_spi->zero16(m_currentWrPosition, dataSize); // cast audio data to uint.
m_currentWrPosition += dataSize;
m_spi->write16(m_currentWrPosition, static_cast<uint16_t>(data));
if (m_currentWrPosition < m_end-1) {
m_currentWrPosition+=2; // wrote two bytes
} else { } else {
// this write will wrap the memory slot m_currentWrPosition = m_start;
size_t numBytes = m_end - m_currentWrPosition + 1;
m_spi->zero16(m_currentWrPosition, numBytes);
size_t remainingBytes = dataSize - numBytes; // calculate the remaining bytes
m_spi->zero16(m_start, remainingBytes); // write remaining bytes are start
m_currentWrPosition = m_start + remainingBytes;
} }
return true; return true;
} }
bool ExtMemSlot::enable() const bool ExtMemSlot::enable() const
{ {
if (m_spi) { if (m_spi) {
@ -158,6 +191,7 @@ void ExtMemSlot::printStatus(void) const
{ {
Serial.println(String("valid:") + m_valid + String(" m_start:") + m_start + \ Serial.println(String("valid:") + m_valid + String(" m_start:") + m_start + \
String(" m_end:") + m_end + String(" m_currentWrPosition: ") + m_currentWrPosition + \ String(" m_end:") + m_end + String(" m_currentWrPosition: ") + m_currentWrPosition + \
String(" m_currentRdPosition: ") + m_currentRdPosition + \
String(" m_size:") + m_size); String(" m_size:") + m_size);
} }
@ -178,11 +212,6 @@ ExternalSramManager::ExternalSramManager(unsigned numMemories)
m_memConfig[i].nextAvailable = 0; m_memConfig[i].nextAvailable = 0;
m_memConfig[i].m_spi = nullptr; m_memConfig[i].m_spi = nullptr;
// if (i < numMemories) {
// m_memConfig[i].m_spi = new BAGuitar::BASpiMemory(static_cast<BAGuitar::SpiDeviceId>(i));
// } else {
// m_memConfig[i].m_spi = nullptr;
// }
} }
m_configured = true; m_configured = true;
} }
@ -204,7 +233,7 @@ bool ExternalSramManager::requestMemory(ExtMemSlot *slot, float delayMillisecond
{ {
// convert the time to numer of samples // convert the time to numer of samples
size_t delayLengthInt = (size_t)((delayMilliseconds*(AUDIO_SAMPLE_RATE_EXACT/1000.0f))+0.5f); size_t delayLengthInt = (size_t)((delayMilliseconds*(AUDIO_SAMPLE_RATE_EXACT/1000.0f))+0.5f);
return requestMemory(slot, delayLengthInt, mem); return requestMemory(slot, delayLengthInt * sizeof(int16_t), mem);
} }
bool ExternalSramManager::requestMemory(ExtMemSlot *slot, size_t sizeBytes, BAGuitar::MemSelect mem) bool ExternalSramManager::requestMemory(ExtMemSlot *slot, size_t sizeBytes, BAGuitar::MemSelect mem)

189
src/LibMemoryManagement.h
Unescape View File

@ -1,87 +1,196 @@
/* /**************************************************************************//**
* ExtMemoryManagement.h * @file
* @author Steve Lascos
* @company Blackaddr Audio
* *
* Created on: Dec 23, 2017 * LibMemoryManagment is a class for providing access to external SPI based
* Author: slascos * SRAM with the optional convience of breaking it up into 'slots' which are smaller
*/ * memory entities.
* @details This class treats an external memory as a pool from which the user requests
* a block. When using that block, the user need not be concerned with where the pool
* it came from, they only deal with offsets from the start of their memory block. Ie.
* Your particular slot of memory appears to you to start at 0 and end at whatever size
* was requested.
*
* @copyright This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.*
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*****************************************************************************/
#ifndef SRC_LIBMEMORYMANAGEMENT_H_ #ifndef __LIBMEMORYMANAGEMENT_H
#define SRC_LIBMEMORYMANAGEMENT_H_ #define __LIBMEMORYMANAGEMENT_H
#include <cstddef> #include <cstddef>
//#include "Audio.h"
#include "BAHardware.h" #include "BAHardware.h"
#include "BASpiMemory.h" #include "BASpiMemory.h"
//#include "LibBasicFunctions.h"
namespace BAGuitar { namespace BAGuitar {
/**************************************************************************//**
* MemConfig contains the configuration information associated with a particular
* SPI interface.
*****************************************************************************/
struct MemConfig { struct MemConfig {
size_t size; size_t size; ///< the total size of the external SPI memory
size_t totalAvailable; size_t totalAvailable; ///< the number of bytes available (remaining)
size_t nextAvailable; size_t nextAvailable; ///< the starting point for the next available slot
BASpiMemory *m_spi = nullptr; BASpiMemory *m_spi = nullptr; ///< handle to the SPI interface
}; };
class ExternalSramManager; // forward declare so ExtMemSlot can setup friendship class ExternalSramManager; // forward declare so ExtMemSlot can declared friendship with it
/**************************************************************************//**
* ExtMemSlot provides a convenient interface to a particular slot of an
* external memory.
* @details the memory can be access randomly, as a single word, as a block of
* data, or as circular queue.
*****************************************************************************/
class ExtMemSlot { class ExtMemSlot {
public: public:
/// clear the entire contents of the slot by writing zeros
/// @returns true on success
bool clear(); bool clear();
bool setWritePosition(size_t offset) { m_currentWrPosition = m_start + offset; return true;} // TODO add range check
/// set a new write position (in bytes) for circular operation
/// @param offsetBytes moves the write pointer to the specified offset from the slot start
/// @returns true on success, else false if offset is beyond slot boundaries.
bool setWritePosition(size_t offsetBytes);
/// returns the currently set write pointer pointer
/// @returns the write position value
size_t getWritePosition() const { return m_currentWrPosition-m_start; } size_t getWritePosition() const { return m_currentWrPosition-m_start; }
bool setReadPosition(size_t offset) { m_currentRdPosition = m_start + offset; return true;} // TODO add range check /// set a new read position (in bytes) for circular operation
size_t getReadPosition() const { return m_currentRdPosition-m_start; } /// @param offsetBytes moves the read pointer to the specified offset from the slot start
/// @returns true on success, else false if offset is beyond slot boundaries.
bool setReadPosition(size_t offsetBytes);
bool write16(size_t offset, int16_t *dataPtr, size_t numData); /// returns the currently set read pointer pointer
bool zero16(size_t offset, size_t numData); /// @returns the read position value
bool read16(int16_t *dest, size_t srcOffset, size_t numData); size_t getReadPosition() const { return m_currentRdPosition-m_start; }
/// Write a block of 16-bit data to the memory at the specified offset
/// @param offsetBytes offset in bytes from start of slot
/// @param dataPtr pointer to start of block of 16-bit data
/// @param numWords number of 16-bit words to transfer
/// @returns true on success, else false on error
bool write16(size_t offsetBytes, int16_t *dest, size_t numWords);
/// Write a block of zeros (16-bit) to the memory at the specified offset
/// @param offsetBytes offset in bytes from start of slot
/// @param numWords number of 16-bit words to transfer
/// @returns true on success, else false on error
bool zero16(size_t offsetBytes, size_t numWords);
/// Read a block of 16-bit data from the memory at the specified location
/// @param dest pointer to destination for the read data
/// @param offsetBytes offset in bytes from start of slot
/// @param numWords number of 16-bit words to transfer
/// @returns true on success, else false on error
bool read16(int16_t *dest, size_t offsetBytes, size_t numWords);
/// Read the next in memory during circular operation
/// @returns the next 16-bit data word in memory
uint16_t readAdvance16(); uint16_t readAdvance16();
bool writeAdvance16(int16_t *dataPtr, size_t numData);
/// Write a block of 16-bit data from the specified location in circular operation
/// @param src pointer to the start of the block of data to write to memory
/// @param numWords number of 16-bit words to transfer
/// @returns true on success, else false on error
bool writeAdvance16(int16_t *src, size_t numWords);
/// Write a single 16-bit data to the next location in circular operation
/// @param data the 16-bit word to transfer
/// @returns true on success, else false on error
bool writeAdvance16(int16_t data); // write just one data bool writeAdvance16(int16_t data); // write just one data
bool zeroAdvance16(size_t numData);
//void read16FromPast(int16_t *dest, size_t Offset, size_t numData); /// Write a block of 16-bit data zeros in circular operation
/// @param numWords number of 16-bit words to transfer
/// @returns true on success, else false on error
bool zeroAdvance16(size_t numWords);
/// Get the size of the memory slot
/// @returns size of the slot in bytes
size_t size() const { return m_size; } size_t size() const { return m_size; }
/// Ensures the underlying SPI interface is enabled
/// @returns true on success, false on error
bool enable() const; bool enable() const;
/// Checks whether underlying SPI interface is enabled
/// @returns true if enabled, false if not enabled
bool isEnabled() const; bool isEnabled() const;
/// DEBUG USE: prints out the slot member variables
void printStatus(void) const; void printStatus(void) const;
private: private:
friend ExternalSramManager; friend ExternalSramManager; ///< gives the manager access to the private variables
bool m_valid = false; bool m_valid = false; ///< After a slot is successfully configured by the manager it becomes valid
size_t m_start = 0; size_t m_start = 0; ///< the external memory address in bytes where this slot starts
size_t m_end = 0; size_t m_end = 0; ///< the external memory address in bytes where this slot ends (inclusive)
size_t m_currentWrPosition = 0; size_t m_currentWrPosition = 0; ///< current write pointer for circular operation
size_t m_currentRdPosition = 0; size_t m_currentRdPosition = 0; ///< current read pointer for circular operation
size_t m_size = 0; size_t m_size = 0; ///< size of this slot in bytes
SpiDeviceId m_spiId; SpiDeviceId m_spiId; ///< the SPI Device ID
BASpiMemory *m_spi = nullptr; BASpiMemory *m_spi = nullptr; ///< pointer to an instance of the BASpiMemory interface class
}; };
/**************************************************************************//**
* ExternalSramManager provides a class to handle dividing an external SPI RAM
* into independent slots for general use.
* @details the class does not support deallocated memory because this would cause
* fragmentation.
*****************************************************************************/
class ExternalSramManager final { class ExternalSramManager final {
public: public:
ExternalSramManager() = delete; ExternalSramManager() = delete;
ExternalSramManager(unsigned numMemories);
/// The manager is constructed by specifying how many external memories to handle allocations for
/// @param numMemories the number of external memories
ExternalSramManager(unsigned numMemories = 1);
virtual ~ExternalSramManager(); virtual ~ExternalSramManager();
size_t availableMemory(BAGuitar::MemSelect mem); /// Query the amount of available (unallocated) memory
/// @details note that currently, memory cannot be allocated.
/// @param mem specifies which memory to query, default is memory 0
/// @returns the available memory in bytes
size_t availableMemory(BAGuitar::MemSelect mem = BAGuitar::MemSelect::MEM0);
/// Request memory be allocated for the provided slot
/// @param slot a pointer to the global slot object to which memory will be allocated
/// @param delayMilliseconds request the amount of memory based on required time for audio samples, rather than number of bytes.
/// @param mem specify which external memory to allocate from
/// @returns true on success, otherwise false on error
bool requestMemory(ExtMemSlot *slot, float delayMilliseconds, BAGuitar::MemSelect mem = BAGuitar::MemSelect::MEM0); bool requestMemory(ExtMemSlot *slot, float delayMilliseconds, BAGuitar::MemSelect mem = BAGuitar::MemSelect::MEM0);
bool requestMemory(ExtMemSlot *slot, size_t sizeBytes, BAGuitar::MemSelect mem = BAGuitar::MemSelect::MEM0);
/// Request memory be allocated for the provided slot
/// @param slot a pointer to the global slot object to which memory will be allocated
/// @param sizeBytes request the amount of memory in bytes to request
/// @param mem specify which external memory to allocate from
/// @returns true on success, otherwise false on error
bool requestMemory(ExtMemSlot *slot, size_t sizeBytes, BAGuitar::MemSelect mem = BAGuitar::MemSelect::MEM0);
private: private:
static bool m_configured; static bool m_configured; ///< there should only be one instance of ExternalSramManager in the whole project
static MemConfig m_memConfig[BAGuitar::NUM_MEM_SLOTS]; static MemConfig m_memConfig[BAGuitar::NUM_MEM_SLOTS]; ///< store the configuration information for each external memory
}; };
} }
#endif /* SRC_LIBMEMORYMANAGEMENT_H_ */ #endif /* __LIBMEMORYMANAGEMENT_H */

Write Preview
Loading…
Cancel
Save