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