virtualx-engine/modules/stb_vorbis/audio_stream_ogg_vorbis.cpp

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/*************************************************************************/
/* audio_stream_ogg_vorbis.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "audio_stream_ogg_vorbis.h"
#include "os/file_access.h"
#include "thirdparty/misc/stb_vorbis.c"
void AudioStreamPlaybackOGGVorbis::_mix_internal(AudioFrame *p_buffer, int p_frames) {
ERR_FAIL_COND(!active);
int todo = p_frames;
while (todo && active) {
int mixed = stb_vorbis_get_samples_float_interleaved(ogg_stream, 2, (float *)p_buffer, todo * 2);
todo -= mixed;
frames_mixed += mixed;
if (todo) {
//end of file!
if (vorbis_stream->loop) {
//loop
seek_pos(0);
loops++;
} else {
for (int i = mixed; i < p_frames; i++) {
p_buffer[i] = AudioFrame(0, 0);
}
active = false;
}
}
}
}
float AudioStreamPlaybackOGGVorbis::get_stream_sampling_rate() {
return vorbis_stream->sample_rate;
}
void AudioStreamPlaybackOGGVorbis::start(float p_from_pos) {
active = true;
seek_pos(p_from_pos);
loops = 0;
_begin_resample();
}
void AudioStreamPlaybackOGGVorbis::stop() {
active = false;
}
bool AudioStreamPlaybackOGGVorbis::is_playing() const {
return active;
}
int AudioStreamPlaybackOGGVorbis::get_loop_count() const {
return loops;
}
float AudioStreamPlaybackOGGVorbis::get_pos() const {
return float(frames_mixed) / vorbis_stream->sample_rate;
}
void AudioStreamPlaybackOGGVorbis::seek_pos(float p_time) {
if (!active)
return;
if (p_time >= get_length()) {
p_time = 0;
}
frames_mixed = uint32_t(vorbis_stream->sample_rate * p_time);
stb_vorbis_seek(ogg_stream, frames_mixed);
}
float AudioStreamPlaybackOGGVorbis::get_length() const {
return vorbis_stream->length;
}
AudioStreamPlaybackOGGVorbis::~AudioStreamPlaybackOGGVorbis() {
if (ogg_alloc.alloc_buffer) {
AudioServer::get_singleton()->audio_data_free(ogg_alloc.alloc_buffer);
stb_vorbis_close(ogg_stream);
}
}
Ref<AudioStreamPlayback> AudioStreamOGGVorbis::instance_playback() {
Ref<AudioStreamPlaybackOGGVorbis> ovs;
printf("instance at %p, data %p\n", this, data);
ERR_FAIL_COND_V(data == NULL, ovs);
ovs.instance();
ovs->vorbis_stream = Ref<AudioStreamOGGVorbis>(this);
ovs->ogg_alloc.alloc_buffer = (char *)AudioServer::get_singleton()->audio_data_alloc(decode_mem_size);
ovs->ogg_alloc.alloc_buffer_length_in_bytes = decode_mem_size;
ovs->frames_mixed = 0;
ovs->active = false;
ovs->loops = 0;
int error;
ovs->ogg_stream = stb_vorbis_open_memory((const unsigned char *)data, data_len, &error, &ovs->ogg_alloc);
if (!ovs->ogg_stream) {
AudioServer::get_singleton()->audio_data_free(ovs->ogg_alloc.alloc_buffer);
ovs->ogg_alloc.alloc_buffer = NULL;
ERR_FAIL_COND_V(!ovs->ogg_stream, Ref<AudioStreamPlaybackOGGVorbis>());
}
return ovs;
}
String AudioStreamOGGVorbis::get_stream_name() const {
return ""; //return stream_name;
}
void AudioStreamOGGVorbis::set_data(const PoolVector<uint8_t> &p_data) {
int src_data_len = p_data.size();
#define MAX_TEST_MEM (1 << 20)
uint32_t alloc_try = 1024;
PoolVector<char> alloc_mem;
PoolVector<char>::Write w;
stb_vorbis *ogg_stream = NULL;
stb_vorbis_alloc ogg_alloc;
while (alloc_try < MAX_TEST_MEM) {
alloc_mem.resize(alloc_try);
w = alloc_mem.write();
ogg_alloc.alloc_buffer = w.ptr();
ogg_alloc.alloc_buffer_length_in_bytes = alloc_try;
PoolVector<uint8_t>::Read src_datar = p_data.read();
int error;
ogg_stream = stb_vorbis_open_memory((const unsigned char *)src_datar.ptr(), src_data_len, &error, &ogg_alloc);
if (!ogg_stream && error == VORBIS_outofmem) {
w = PoolVector<char>::Write();
alloc_try *= 2;
} else {
ERR_FAIL_COND(alloc_try == MAX_TEST_MEM);
ERR_FAIL_COND(ogg_stream == NULL);
stb_vorbis_info info = stb_vorbis_get_info(ogg_stream);
channels = info.channels;
sample_rate = info.sample_rate;
decode_mem_size = alloc_try;
//does this work? (it's less mem..)
//decode_mem_size = ogg_alloc.alloc_buffer_length_in_bytes + info.setup_memory_required + info.temp_memory_required + info.max_frame_size;
//print_line("succeeded "+itos(ogg_alloc.alloc_buffer_length_in_bytes)+" setup "+itos(info.setup_memory_required)+" setup temp "+itos(info.setup_temp_memory_required)+" temp "+itos(info.temp_memory_required)+" maxframe"+itos(info.max_frame_size));
length = stb_vorbis_stream_length_in_seconds(ogg_stream);
stb_vorbis_close(ogg_stream);
data = AudioServer::get_singleton()->audio_data_alloc(src_data_len, src_datar.ptr());
data_len = src_data_len;
break;
}
}
printf("create at %p, data %p\n", this, data);
}
PoolVector<uint8_t> AudioStreamOGGVorbis::get_data() const {
PoolVector<uint8_t> vdata;
if (data_len && data) {
vdata.resize(data_len);
{
PoolVector<uint8_t>::Write w = vdata.write();
copymem(w.ptr(), data, data_len);
}
}
return vdata;
}
void AudioStreamOGGVorbis::set_loop(bool p_enable) {
loop = p_enable;
}
bool AudioStreamOGGVorbis::has_loop() const {
return loop;
}
void AudioStreamOGGVorbis::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_data", "data"), &AudioStreamOGGVorbis::set_data);
ClassDB::bind_method(D_METHOD("get_data"), &AudioStreamOGGVorbis::get_data);
ClassDB::bind_method(D_METHOD("set_loop", "enable"), &AudioStreamOGGVorbis::set_loop);
ClassDB::bind_method(D_METHOD("has_loop"), &AudioStreamOGGVorbis::has_loop);
ADD_PROPERTY(PropertyInfo(Variant::POOL_BYTE_ARRAY, "data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "set_data", "get_data");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "loop", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "set_loop", "has_loop");
}
AudioStreamOGGVorbis::AudioStreamOGGVorbis() {
data = NULL;
length = 0;
sample_rate = 1;
channels = 1;
decode_mem_size = 0;
loop = false;
}