mirror of
https://github.com/godotengine/godot
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561 lines
18 KiB
C++
561 lines
18 KiB
C++
/**************************************************************************/
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/* audio_stream_ogg_vorbis.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "audio_stream_ogg_vorbis.h"
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#include "core/io/file_access.h"
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#include "core/variant/typed_array.h"
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#include "modules/vorbis/resource_importer_ogg_vorbis.h"
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#include <ogg/ogg.h>
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int AudioStreamPlaybackOggVorbis::_mix_internal(AudioFrame *p_buffer, int p_frames) {
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ERR_FAIL_COND_V(!ready, 0);
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if (!active) {
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return 0;
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}
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int todo = p_frames;
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int beat_length_frames = -1;
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bool use_loop = looping_override ? looping : vorbis_stream->loop;
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if (use_loop && vorbis_stream->get_bpm() > 0 && vorbis_stream->get_beat_count() > 0) {
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beat_length_frames = vorbis_stream->get_beat_count() * vorbis_data->get_sampling_rate() * 60 / vorbis_stream->get_bpm();
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}
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while (todo > 0 && active) {
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AudioFrame *buffer = p_buffer;
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buffer += p_frames - todo;
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int to_mix = todo;
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if (beat_length_frames >= 0 && (beat_length_frames - (int)frames_mixed) < to_mix) {
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to_mix = MAX(0, beat_length_frames - (int)frames_mixed);
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}
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int mixed = _mix_frames_vorbis(buffer, to_mix);
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ERR_FAIL_COND_V(mixed < 0, 0);
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todo -= mixed;
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frames_mixed += mixed;
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if (loop_fade_remaining < FADE_SIZE) {
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int to_fade = loop_fade_remaining + MIN(FADE_SIZE - loop_fade_remaining, mixed);
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for (int i = loop_fade_remaining; i < to_fade; i++) {
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buffer[i - loop_fade_remaining] += loop_fade[i] * (float(FADE_SIZE - i) / float(FADE_SIZE));
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}
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loop_fade_remaining = to_fade;
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}
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if (beat_length_frames >= 0) {
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/**
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* Length determined by beat length
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* This code is commented out because, in practice, it is preferred that the fade
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* is done by the transitioner and this stream just goes on until it ends while fading out.
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*
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* End fade implementation is left here for reference in case at some point this feature
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* is desired.
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if (!beat_loop && (int)frames_mixed > beat_length_frames - FADE_SIZE) {
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print_line("beat length fade/after mix?");
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//No loop, just fade and finish
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for (int i = 0; i < mixed; i++) {
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int idx = frames_mixed + i - mixed;
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buffer[i] *= 1.0 - float(MAX(0, (idx - (beat_length_frames - FADE_SIZE)))) / float(FADE_SIZE);
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}
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if ((int)frames_mixed == beat_length_frames) {
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for (int i = p_frames - todo; i < p_frames; i++) {
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p_buffer[i] = AudioFrame(0, 0);
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}
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active = false;
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break;
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}
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} else
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**/
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if (use_loop && beat_length_frames <= (int)frames_mixed) {
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// End of file when doing beat-based looping. <= used instead of == because importer editing
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if (!have_packets_left && !have_samples_left) {
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//Nothing remaining, so do nothing.
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loop_fade_remaining = FADE_SIZE;
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} else {
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// Add some loop fade;
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int faded_mix = _mix_frames_vorbis(loop_fade, FADE_SIZE);
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for (int i = faded_mix; i < FADE_SIZE; i++) {
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// In case lesss was mixed, pad with zeros
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loop_fade[i] = AudioFrame(0, 0);
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}
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loop_fade_remaining = 0;
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}
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seek(vorbis_stream->loop_offset);
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loops++;
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// We still have buffer to fill, start from this element in the next iteration.
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continue;
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}
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}
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if (!have_packets_left && !have_samples_left) {
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// Actual end of file!
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bool is_not_empty = mixed > 0 || vorbis_stream->get_length() > 0;
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if (use_loop && is_not_empty) {
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//loop
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seek(vorbis_stream->loop_offset);
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loops++;
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// We still have buffer to fill, start from this element in the next iteration.
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} else {
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for (int i = p_frames - todo; i < p_frames; i++) {
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p_buffer[i] = AudioFrame(0, 0);
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}
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active = false;
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}
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}
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}
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return p_frames - todo;
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}
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int AudioStreamPlaybackOggVorbis::_mix_frames_vorbis(AudioFrame *p_buffer, int p_frames) {
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ERR_FAIL_COND_V(!ready, p_frames);
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if (!have_samples_left) {
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ogg_packet *packet = nullptr;
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int err;
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if (!vorbis_data_playback->next_ogg_packet(&packet)) {
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have_packets_left = false;
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WARN_PRINT("ran out of packets in stream");
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return -1;
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}
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err = vorbis_synthesis(&block, packet);
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ERR_FAIL_COND_V_MSG(err != 0, p_frames, "Error during vorbis synthesis " + itos(err));
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err = vorbis_synthesis_blockin(&dsp_state, &block);
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ERR_FAIL_COND_V_MSG(err != 0, p_frames, "Error during vorbis block processing " + itos(err));
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have_packets_left = !packet->e_o_s;
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}
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float **pcm; // Accessed with pcm[channel_idx][sample_idx].
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int frames = vorbis_synthesis_pcmout(&dsp_state, &pcm);
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if (frames > p_frames) {
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frames = p_frames;
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have_samples_left = true;
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} else {
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have_samples_left = false;
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}
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if (info.channels > 1) {
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for (int frame = 0; frame < frames; frame++) {
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p_buffer[frame].left = pcm[0][frame];
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p_buffer[frame].right = pcm[1][frame];
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}
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} else {
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for (int frame = 0; frame < frames; frame++) {
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p_buffer[frame].left = pcm[0][frame];
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p_buffer[frame].right = pcm[0][frame];
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}
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}
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vorbis_synthesis_read(&dsp_state, frames);
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return frames;
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}
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float AudioStreamPlaybackOggVorbis::get_stream_sampling_rate() {
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return vorbis_data->get_sampling_rate();
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}
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bool AudioStreamPlaybackOggVorbis::_alloc_vorbis() {
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vorbis_info_init(&info);
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info_is_allocated = true;
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vorbis_comment_init(&comment);
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comment_is_allocated = true;
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ERR_FAIL_COND_V(vorbis_data.is_null(), false);
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vorbis_data_playback = vorbis_data->instantiate_playback();
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ogg_packet *packet;
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int err;
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for (int i = 0; i < 3; i++) {
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if (!vorbis_data_playback->next_ogg_packet(&packet)) {
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WARN_PRINT("Not enough packets to parse header");
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return false;
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}
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err = vorbis_synthesis_headerin(&info, &comment, packet);
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ERR_FAIL_COND_V_MSG(err != 0, false, "Error parsing header");
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}
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err = vorbis_synthesis_init(&dsp_state, &info);
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ERR_FAIL_COND_V_MSG(err != 0, false, "Error initializing dsp state");
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dsp_state_is_allocated = true;
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err = vorbis_block_init(&dsp_state, &block);
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ERR_FAIL_COND_V_MSG(err != 0, false, "Error initializing block");
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block_is_allocated = true;
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ready = true;
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return true;
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}
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void AudioStreamPlaybackOggVorbis::start(double p_from_pos) {
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ERR_FAIL_COND(!ready);
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loop_fade_remaining = FADE_SIZE;
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active = true;
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seek(p_from_pos);
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loops = 0;
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begin_resample();
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}
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void AudioStreamPlaybackOggVorbis::stop() {
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active = false;
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}
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bool AudioStreamPlaybackOggVorbis::is_playing() const {
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return active;
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}
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int AudioStreamPlaybackOggVorbis::get_loop_count() const {
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return loops;
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}
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double AudioStreamPlaybackOggVorbis::get_playback_position() const {
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return double(frames_mixed) / (double)vorbis_data->get_sampling_rate();
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}
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void AudioStreamPlaybackOggVorbis::tag_used_streams() {
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vorbis_stream->tag_used(get_playback_position());
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}
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void AudioStreamPlaybackOggVorbis::set_parameter(const StringName &p_name, const Variant &p_value) {
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if (p_name == SNAME("looping")) {
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if (p_value == Variant()) {
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looping_override = false;
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looping = false;
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} else {
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looping_override = true;
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looping = p_value;
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}
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}
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}
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Variant AudioStreamPlaybackOggVorbis::get_parameter(const StringName &p_name) const {
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if (looping_override && p_name == SNAME("looping")) {
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return looping;
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}
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return Variant();
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}
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void AudioStreamPlaybackOggVorbis::seek(double p_time) {
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ERR_FAIL_COND(!ready);
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ERR_FAIL_COND(vorbis_stream.is_null());
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if (!active) {
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return;
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}
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if (p_time >= vorbis_stream->get_length()) {
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p_time = 0;
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}
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frames_mixed = uint32_t(vorbis_data->get_sampling_rate() * p_time);
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const int64_t desired_sample = p_time * get_stream_sampling_rate();
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if (!vorbis_data_playback->seek_page(desired_sample)) {
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WARN_PRINT("seek failed");
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return;
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}
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// We want to start decoding before the page that we expect the sample to be in (the sample may
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// be part of a partial packet across page boundaries). Otherwise, the decoder may not have
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// synchronized before reaching the sample.
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int64_t start_page_number = vorbis_data_playback->get_page_number() - 1;
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if (start_page_number < 0) {
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start_page_number = 0;
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}
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while (true) {
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ogg_packet *packet;
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int err;
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// We start at an unknown granule position.
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int64_t granule_pos = -1;
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// Decode data until we get to the desired sample or notice that we have read past it.
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vorbis_data_playback->set_page_number(start_page_number);
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vorbis_synthesis_restart(&dsp_state);
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while (true) {
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if (!vorbis_data_playback->next_ogg_packet(&packet)) {
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WARN_PRINT_ONCE("Seeking beyond limits");
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return;
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}
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err = vorbis_synthesis(&block, packet);
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if (err != OV_ENOTAUDIO) {
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ERR_FAIL_COND_MSG(err != 0, "Error during vorbis synthesis " + itos(err) + ".");
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err = vorbis_synthesis_blockin(&dsp_state, &block);
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ERR_FAIL_COND_MSG(err != 0, "Error during vorbis block processing " + itos(err) + ".");
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int samples_out = vorbis_synthesis_pcmout(&dsp_state, nullptr);
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if (granule_pos < 0) {
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// We don't know where we are yet, so just keep on decoding.
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err = vorbis_synthesis_read(&dsp_state, samples_out);
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ERR_FAIL_COND_MSG(err != 0, "Error during vorbis read updating " + itos(err) + ".");
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} else if (granule_pos + samples_out >= desired_sample) {
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// Our sample is in this block. Skip the beginning of the block up to the sample, then
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// return.
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int skip_samples = (int)(desired_sample - granule_pos);
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err = vorbis_synthesis_read(&dsp_state, skip_samples);
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ERR_FAIL_COND_MSG(err != 0, "Error during vorbis read updating " + itos(err) + ".");
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have_samples_left = skip_samples < samples_out;
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have_packets_left = !packet->e_o_s;
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return;
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} else {
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// Our sample is not in this block. Skip it.
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err = vorbis_synthesis_read(&dsp_state, samples_out);
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ERR_FAIL_COND_MSG(err != 0, "Error during vorbis read updating " + itos(err) + ".");
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granule_pos += samples_out;
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}
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}
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if (packet->granulepos != -1) {
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// We found an update to our granule position.
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granule_pos = packet->granulepos;
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if (granule_pos > desired_sample) {
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// We've read past our sample. We need to start on an earlier page.
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if (start_page_number == 0) {
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// We didn't find the sample even reading from the beginning.
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have_samples_left = false;
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have_packets_left = !packet->e_o_s;
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return;
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}
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start_page_number--;
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break;
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}
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}
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if (packet->e_o_s) {
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// We've reached the end of the stream and didn't find our sample.
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have_samples_left = false;
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have_packets_left = false;
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return;
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}
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}
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}
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}
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AudioStreamPlaybackOggVorbis::~AudioStreamPlaybackOggVorbis() {
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if (block_is_allocated) {
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vorbis_block_clear(&block);
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}
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if (dsp_state_is_allocated) {
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vorbis_dsp_clear(&dsp_state);
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}
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if (comment_is_allocated) {
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vorbis_comment_clear(&comment);
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}
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if (info_is_allocated) {
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vorbis_info_clear(&info);
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}
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}
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Ref<AudioStreamPlayback> AudioStreamOggVorbis::instantiate_playback() {
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Ref<AudioStreamPlaybackOggVorbis> ovs;
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ERR_FAIL_COND_V(packet_sequence.is_null(), nullptr);
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ovs.instantiate();
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ovs->vorbis_stream = Ref<AudioStreamOggVorbis>(this);
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ovs->vorbis_data = packet_sequence;
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ovs->frames_mixed = 0;
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ovs->active = false;
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ovs->loops = 0;
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if (ovs->_alloc_vorbis()) {
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return ovs;
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}
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// Failed to allocate data structures.
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return nullptr;
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}
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String AudioStreamOggVorbis::get_stream_name() const {
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return ""; //return stream_name;
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}
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void AudioStreamOggVorbis::maybe_update_info() {
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ERR_FAIL_COND(packet_sequence.is_null());
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vorbis_info info;
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vorbis_comment comment;
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int err;
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vorbis_info_init(&info);
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vorbis_comment_init(&comment);
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Ref<OggPacketSequencePlayback> packet_sequence_playback = packet_sequence->instantiate_playback();
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for (int i = 0; i < 3; i++) {
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ogg_packet *packet;
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if (!packet_sequence_playback->next_ogg_packet(&packet)) {
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WARN_PRINT("Failed to get header packet");
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break;
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}
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if (i == 0) {
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packet->b_o_s = 1;
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ERR_FAIL_COND(!vorbis_synthesis_idheader(packet));
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}
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err = vorbis_synthesis_headerin(&info, &comment, packet);
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ERR_FAIL_COND_MSG(err != 0, "Error parsing header packet " + itos(i) + ": " + itos(err));
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}
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packet_sequence->set_sampling_rate(info.rate);
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vorbis_comment_clear(&comment);
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vorbis_info_clear(&info);
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}
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void AudioStreamOggVorbis::set_packet_sequence(Ref<OggPacketSequence> p_packet_sequence) {
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packet_sequence = p_packet_sequence;
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if (packet_sequence.is_valid()) {
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maybe_update_info();
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}
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}
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Ref<OggPacketSequence> AudioStreamOggVorbis::get_packet_sequence() const {
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return packet_sequence;
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}
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void AudioStreamOggVorbis::set_loop(bool p_enable) {
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loop = p_enable;
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}
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bool AudioStreamOggVorbis::has_loop() const {
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return loop;
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}
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void AudioStreamOggVorbis::set_loop_offset(double p_seconds) {
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loop_offset = p_seconds;
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}
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double AudioStreamOggVorbis::get_loop_offset() const {
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return loop_offset;
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}
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double AudioStreamOggVorbis::get_length() const {
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ERR_FAIL_COND_V(packet_sequence.is_null(), 0);
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return packet_sequence->get_length();
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}
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void AudioStreamOggVorbis::set_bpm(double p_bpm) {
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ERR_FAIL_COND(p_bpm < 0);
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bpm = p_bpm;
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emit_changed();
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}
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double AudioStreamOggVorbis::get_bpm() const {
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return bpm;
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}
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void AudioStreamOggVorbis::set_beat_count(int p_beat_count) {
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ERR_FAIL_COND(p_beat_count < 0);
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beat_count = p_beat_count;
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|
emit_changed();
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}
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|
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int AudioStreamOggVorbis::get_beat_count() const {
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return beat_count;
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|
}
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void AudioStreamOggVorbis::set_bar_beats(int p_bar_beats) {
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|
ERR_FAIL_COND(p_bar_beats < 2);
|
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bar_beats = p_bar_beats;
|
|
emit_changed();
|
|
}
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|
|
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int AudioStreamOggVorbis::get_bar_beats() const {
|
|
return bar_beats;
|
|
}
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|
|
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bool AudioStreamOggVorbis::is_monophonic() const {
|
|
return false;
|
|
}
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|
|
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void AudioStreamOggVorbis::get_parameter_list(List<Parameter> *r_parameters) {
|
|
r_parameters->push_back(Parameter(PropertyInfo(Variant::BOOL, "looping", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_CHECKABLE), Variant()));
|
|
}
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|
|
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void AudioStreamOggVorbis::_bind_methods() {
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ClassDB::bind_static_method("AudioStreamOggVorbis", D_METHOD("load_from_buffer", "buffer"), &AudioStreamOggVorbis::load_from_buffer);
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ClassDB::bind_static_method("AudioStreamOggVorbis", D_METHOD("load_from_file", "path"), &AudioStreamOggVorbis::load_from_file);
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|
|
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ClassDB::bind_method(D_METHOD("set_packet_sequence", "packet_sequence"), &AudioStreamOggVorbis::set_packet_sequence);
|
|
ClassDB::bind_method(D_METHOD("get_packet_sequence"), &AudioStreamOggVorbis::get_packet_sequence);
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|
|
|
ClassDB::bind_method(D_METHOD("set_loop", "enable"), &AudioStreamOggVorbis::set_loop);
|
|
ClassDB::bind_method(D_METHOD("has_loop"), &AudioStreamOggVorbis::has_loop);
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|
|
|
ClassDB::bind_method(D_METHOD("set_loop_offset", "seconds"), &AudioStreamOggVorbis::set_loop_offset);
|
|
ClassDB::bind_method(D_METHOD("get_loop_offset"), &AudioStreamOggVorbis::get_loop_offset);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_bpm", "bpm"), &AudioStreamOggVorbis::set_bpm);
|
|
ClassDB::bind_method(D_METHOD("get_bpm"), &AudioStreamOggVorbis::get_bpm);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_beat_count", "count"), &AudioStreamOggVorbis::set_beat_count);
|
|
ClassDB::bind_method(D_METHOD("get_beat_count"), &AudioStreamOggVorbis::get_beat_count);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_bar_beats", "count"), &AudioStreamOggVorbis::set_bar_beats);
|
|
ClassDB::bind_method(D_METHOD("get_bar_beats"), &AudioStreamOggVorbis::get_bar_beats);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "packet_sequence", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR), "set_packet_sequence", "get_packet_sequence");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "bpm", PROPERTY_HINT_RANGE, "0,400,0.01,or_greater"), "set_bpm", "get_bpm");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "beat_count", PROPERTY_HINT_RANGE, "0,512,1,or_greater"), "set_beat_count", "get_beat_count");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "bar_beats", PROPERTY_HINT_RANGE, "2,32,1,or_greater"), "set_bar_beats", "get_bar_beats");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "loop"), "set_loop", "has_loop");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "loop_offset"), "set_loop_offset", "get_loop_offset");
|
|
}
|
|
|
|
AudioStreamOggVorbis::AudioStreamOggVorbis() {}
|
|
|
|
AudioStreamOggVorbis::~AudioStreamOggVorbis() {}
|
|
|
|
Ref<AudioStreamOggVorbis> AudioStreamOggVorbis::load_from_buffer(const Vector<uint8_t> &file_data) {
|
|
return ResourceImporterOggVorbis::load_from_buffer(file_data);
|
|
}
|
|
|
|
Ref<AudioStreamOggVorbis> AudioStreamOggVorbis::load_from_file(const String &p_path) {
|
|
return ResourceImporterOggVorbis::load_from_file(p_path);
|
|
}
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