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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;
m_modified = m_buffer;
for (Sample *d = m_buffer, *s = data; s != data + size;)
*d++ = *s++;
}
__attribute__((section(".convcode")))
void SampleBuffer::midmodify(Sample *data, unsigned int srcsize) {
auto size = srcsize < m_size / 2 ? srcsize : m_size / 2;
m_modified = middata();
for (Sample *d = middata(), *s = data; s != data + size;)
*d++ = *s++;
}
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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