82 lines
2.0 KiB
C++
82 lines
2.0 KiB
C++
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#include <cassert>
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#include "SoftwareAudioOutput.h"
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using namespace tgvoip::audio;
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SoftwareAudioOutput::SoftwareAudioOutput() {
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isActive = false;
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pj_pool = pjsua_pool_create("output%p", 2048, 512);
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media_port = PJ_POOL_ZALLOC_T(pj_pool, pjmedia_port);
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pj_status_t status;
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pj_str_t name = pj_str((char *) "output");
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// ptime = 10ms -> 480 samples per frame
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status = pjmedia_port_info_init(&media_port->info,
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&name,
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PJMEDIA_SIG_CLASS_PORT_AUD('S', 'O'), // Software Output SIG
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48000, 1, 16, 480);
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assert(status == PJ_SUCCESS);
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media_port->port_data.pdata = this;
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media_port->put_frame = &PutFrameCallback;
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media_port->get_frame = &GetFrameCallback;
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registerMediaPort(media_port);
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// 48kHz * 20 ms * 16 bits per sample
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buffer = new unsigned char[1920];
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}
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SoftwareAudioOutput::~SoftwareAudioOutput() {
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unregisterMediaPort();
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pjmedia_port_destroy(media_port);
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pj_pool_release(pj_pool);
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if (buffer) {
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delete buffer;
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}
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}
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void SoftwareAudioOutput::Start() {
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isActive = true;
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}
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void SoftwareAudioOutput::Stop() {
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isActive = false;
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}
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bool SoftwareAudioOutput::IsPlaying() {
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return isActive;
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}
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pj_status_t SoftwareAudioOutput::PutFrameCallback(pjmedia_port *port, pjmedia_frame *frame) {
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frame->size = 0;
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frame->type = PJMEDIA_FRAME_TYPE_NONE;
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return PJ_SUCCESS;
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}
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pj_status_t SoftwareAudioOutput::GetFrameCallback(pjmedia_port *port, pjmedia_frame *frame) {
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auto output = (SoftwareAudioOutput *) port->port_data.pdata;
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if (!output->isActive) {
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frame->type = PJMEDIA_FRAME_TYPE_NONE;
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frame->size = 0;
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return PJ_SUCCESS;
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}
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// libtgvoip ptime = 20ms
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if (output->read_buffer) {
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output->InvokeCallback(output->buffer, 1920);
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memcpy(frame->buf, output->buffer, 960);
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} else {
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memcpy(frame->buf, output->buffer + 960, 960);
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}
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output->read_buffer = !output->read_buffer;
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return PJ_SUCCESS;
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}
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