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/**
* @file samplebuffer.cpp
* @brief Manages ADC/DAC buffer data.
*
* Copyright (C) 2021 Clyne Sullivan
*
* Distributed under the GNU GPL v3 or later. You should have received a copy of
* the GNU General Public License along with this program.
* If not, see <https://www.gnu.org/licenses/>.
*/
#include "samplebuffer.hpp"
SampleBuffer::SampleBuffer(Sample *buffer) :
m_buffer(buffer) {}
void SampleBuffer::clear() {
std::fill(m_buffer, m_buffer + m_size, 2048);
}
__attribute__((section(".convcode")))
void SampleBuffer::modify(Sample *data, unsigned int srcsize) {
auto size = srcsize < m_size ? srcsize : m_size;
size = (size + 15) & (~15);
m_modified = m_buffer;
const int *src = reinterpret_cast<const int *>(data);
const int * const srcend = src + (size / 2);
int *dst = reinterpret_cast<int *>(m_buffer);
do {
int a = src[0];
int b = src[1];
int c = src[2];
int d = src[3];
int e = src[4];
int f = src[5];
int g = src[6];
int h = src[7];
dst[0] = a;
dst[1] = b;
dst[2] = c;
dst[3] = d;
dst[4] = e;
dst[5] = f;
dst[6] = g;
dst[7] = h;
src += 8;
dst += 8;
} while (src < srcend);
}
__attribute__((section(".convcode")))
void SampleBuffer::midmodify(Sample *data, unsigned int srcsize) {
auto size = srcsize < m_size / 2 ? srcsize : m_size / 2;
size = (size + 15) & (~15);
m_modified = middata();
const int *src = reinterpret_cast<const int *>(data);
const int * const srcend = src + (size / 2);
int *dst = reinterpret_cast<int *>(middata());
do {
int a = src[0];
int b = src[1];
int c = src[2];
int d = src[3];
int e = src[4];
int f = src[5];
int g = src[6];
int h = src[7];
dst[0] = a;
dst[1] = b;
dst[2] = c;
dst[3] = d;
dst[4] = e;
dst[5] = f;
dst[6] = g;
dst[7] = h;
src += 8;
dst += 8;
} while (src < srcend);
}
void SampleBuffer::setModified() {
m_modified = m_buffer;
}
void SampleBuffer::setMidmodified() {
m_modified = middata();
}
void SampleBuffer::setSize(unsigned int size) {
m_size = size < MAX_SAMPLE_BUFFER_SIZE ? size : MAX_SAMPLE_BUFFER_SIZE;
}
__attribute__((section(".convcode")))
Sample *SampleBuffer::data() {
return m_buffer;
}
__attribute__((section(".convcode")))
Sample *SampleBuffer::middata() {
return m_buffer + m_size / 2;
}
uint8_t *SampleBuffer::bytedata() {
return reinterpret_cast<uint8_t *>(m_buffer);
}
Sample *SampleBuffer::modified() {
auto m = m_modified;
m_modified = nullptr;
return m;
}
__attribute__((section(".convcode")))
unsigned int SampleBuffer::size() const {
return m_size;
}
unsigned int SampleBuffer::bytesize() const {
return m_size * sizeof(Sample);
}
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