First commit of brand new rewrite

2018-05-30 03:24:12 +10:00
commit 244c092591
86 changed files with 8016 additions and 0 deletions
@@ -0,0 +1,72 @@
+#include "audio.h"
+
+#include "project/sequence.h"
+
+#include <QAudioOutput>
+#include <QDebug>
+
+extern "C" {
+	#include <libavcodec/avcodec.h>
+}
+
+QAudioOutput* audio_output;
+QIODevice* audio_io_device;
+bool audio_device_set = false;
+
+uint8_t* audio_cache_A = NULL;
+uint8_t* audio_cache_B = NULL;
+int audio_cache_size = 0;
+bool switch_audio_cache = true;
+bool reading_audio_cache_A = false;
+
+void init_audio(Sequence* s) {
+	if (audio_cache_A != NULL) {
+		delete [] audio_cache_A;
+		audio_cache_A = NULL;
+	}
+
+	if (audio_cache_B != NULL) {
+		delete [] audio_cache_B;
+		audio_cache_B = NULL;
+	}
+
+	if (audio_device_set) {
+		audio_output->stop();
+		delete audio_output;
+		audio_device_set = false;
+	}
+
+	if (s != NULL) {
+		QAudioFormat audio_format;
+		audio_format.setSampleRate(s->audio_frequency);
+		audio_format.setChannelCount(av_get_channel_layout_nb_channels(s->audio_layout));
+		audio_format.setSampleSize(16);
+		audio_format.setCodec("audio/pcm");
+		audio_format.setByteOrder(QAudioFormat::LittleEndian);
+		audio_format.setSampleType(QAudioFormat::SignedInt);
+
+		QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice());
+		if (!info.isFormatSupported(audio_format)) {
+			qWarning() << "[WARNING] Couldn't initialize audio. Audio format is not supported by backend";
+		} else {
+			audio_output = new QAudioOutput(audio_format);
+			// connect
+			audio_io_device = audio_output->start();
+			audio_device_set = true;
+
+			audio_cache_size = av_samples_get_buffer_size(NULL, av_get_channel_layout_nb_channels(s->audio_layout), s->audio_frequency/8, AV_SAMPLE_FMT_S16, 1);
+			audio_cache_A = new uint8_t[audio_cache_size];
+			audio_cache_B = new uint8_t[audio_cache_size];
+			clear_cache(true, true);
+		}
+	}
+}
+
+void clear_cache(bool clear_A, bool clear_B) {
+	if (clear_A) {
+		memset(audio_cache_A, 0, audio_cache_size);
+	}
+	if (clear_B) {
+		memset(audio_cache_B, 0, audio_cache_size);
+	}
+}