62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
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#include "AudioFramesMixer.hpp"
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//// Reset mix buffer.
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//Arrays.fill(tempMix, 0);
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//
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//// Sum the buffers.
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//for (final AudioUser user : mix) {
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//for (int i = 0; i < tempMix.length; i++) {
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//tempMix[i] += user.lastFrame[i];
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//}
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//}
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//
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//// Clip buffer for real output.
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//for (int i = 0; i < MumbleProtocol.FRAME_SIZE; i++) {
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//clipOut[i] = (short) (Short.MAX_VALUE * (tempMix[i] < -1.0f ? -1.0f
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//: (tempMix[i] > 1.0f ? 1.0f : tempMix[i])));
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//}
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mixer::AudioFramesMixer::AudioFramesMixer(pj_pool_factory &poolFactory)
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: logger(log4cpp::Category::getInstance("AudioFramesMixer")) {
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pool = pj_pool_create(&poolFactory, "media", 32768, 8192, nullptr);
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if (!pool) {
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throw mixer::Exception("error when creating memory pool");
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}
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// todo calculate sizes
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pj_status_t status = pjmedia_circ_buf_create(pool, 960 * 10, &inputBuff);
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if (status != PJ_SUCCESS) {
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throw mixer::Exception("error when creating circular buffer", status);
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}
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}
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mixer::AudioFramesMixer::~AudioFramesMixer() {
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if (pool != nullptr) {
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pj_pool_release(pool);
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}
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}
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void mixer::AudioFramesMixer::addFrameToBuffer(int sessionId, int sequenceNumber, int16_t *samples, int samplesLength) {
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std::unique_lock<std::mutex> lock(inBuffAccessMutex);
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logger.debug("Pushing %d samples to in-buff.", samplesLength);
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pjmedia_circ_buf_write(inputBuff, samples, samplesLength);
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}
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int mixer::AudioFramesMixer::getMixedSamples(int16_t *mixedSamples, int requestedLength) {
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std::unique_lock<std::mutex> lock(inBuffAccessMutex);
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int availableSamples = pjmedia_circ_buf_get_len(inputBuff);
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const int samplesToRead = std::min(requestedLength, availableSamples);
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logger.debug("Pulling %d samples from in-buff.", samplesToRead);
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pjmedia_circ_buf_read(inputBuff, mixedSamples, samplesToRead);
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return samplesToRead;
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}
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void mixer::AudioFramesMixer::clean() {
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}
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