c7bc44d5ad
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer with state-of-the-art rendering techniques tuned to work as low as middle end handheld devices - without compromising with the possibilities given for higher end desktop games of course. Great times ahead for the Godot community and the gamers that will play our games!
447 lines
12 KiB
C++
447 lines
12 KiB
C++
/*************************************************************************/
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/* av_stream_webm.cpp.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 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 "video_stream_webm.h"
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#include "VPXDecoder.hpp"
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#include "OpusVorbisDecoder.hpp"
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#include "mkvparser/mkvparser.h"
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#include "../theora/yuv2rgb.h"
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#include "os/file_access.h"
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#include "globals.h"
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#include <string.h>
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class MkvReader : public mkvparser::IMkvReader {
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public:
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MkvReader(const String &p_file) {
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file = FileAccess::open(p_file, FileAccess::READ);
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ERR_FAIL_COND(!file);
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}
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~MkvReader() {
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if (file)
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memdelete(file);
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}
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virtual int Read(long long pos, long len, unsigned char *buf) {
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if (file) {
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if (file->get_pos() != (size_t)pos)
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file->seek(pos);
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if (file->get_buffer(buf, len) == len)
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return 0;
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}
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return -1;
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}
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virtual int Length(long long *total, long long *available) {
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if (file) {
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const size_t len = file->get_len();
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if (total)
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*total = len;
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if (available)
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*available = len;
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return 0;
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}
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return -1;
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}
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private:
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FileAccess *file;
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};
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/**/
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VideoStreamPlaybackWebm::VideoStreamPlaybackWebm() :
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audio_track(0),
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webm(NULL),
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video(NULL),
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audio(NULL),
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video_frames(NULL), audio_frame(NULL),
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video_frames_pos(0), video_frames_capacity(0),
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num_decoded_samples(0), samples_offset(-1),
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mix_callback(NULL),
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mix_udata(NULL),
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playing(false), paused(false),
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delay_compensation(0.0),
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time(0.0), video_frame_delay(0.0), video_pos(0.0),
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texture(memnew(ImageTexture)),
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pcm(NULL)
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{}
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VideoStreamPlaybackWebm::~VideoStreamPlaybackWebm() {
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delete_pointers();
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}
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bool VideoStreamPlaybackWebm::open_file(const String &p_file) {
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file_name = p_file;
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webm = memnew(WebMDemuxer(new MkvReader(file_name), 0, audio_track));
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if (webm->isOpen()) {
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video = memnew(VPXDecoder(*webm, 8)); //TODO: Detect CPU threads
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if (video->isOpen()) {
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audio = memnew(OpusVorbisDecoder(*webm));
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if (audio->isOpen()) {
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audio_frame = memnew(WebMFrame);
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pcm = (int16_t *)memalloc(sizeof(int16_t) * audio->getBufferSamples() * webm->getChannels());
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} else {
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memdelete(audio);
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audio = NULL;
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}
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frame_data.resize((webm->getWidth() * webm->getHeight()) << 2);
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texture->create(webm->getWidth(), webm->getHeight(), Image::FORMAT_RGBA, Texture::FLAG_FILTER | Texture::FLAG_VIDEO_SURFACE);
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return true;
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}
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memdelete(video);
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video = NULL;
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}
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memdelete(webm);
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webm = NULL;
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return false;
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}
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void VideoStreamPlaybackWebm::stop() {
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if (playing) {
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delete_pointers();
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pcm = NULL;
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audio_frame = NULL;
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video_frames = NULL;
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video = NULL;
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audio = NULL;
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open_file(file_name); //Should not fail here...
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video_frames_capacity = video_frames_pos = 0;
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num_decoded_samples = 0;
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samples_offset = -1;
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video_frame_delay = video_pos = 0.0;
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}
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time = 0.0;
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playing = false;
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}
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void VideoStreamPlaybackWebm::play() {
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stop();
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delay_compensation = Globals::get_singleton()->get("audio/video_delay_compensation_ms");
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delay_compensation /= 1000.0;
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playing = true;
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}
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bool VideoStreamPlaybackWebm::is_playing() const {
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return playing;
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}
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void VideoStreamPlaybackWebm::set_paused(bool p_paused) {
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paused = p_paused;
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}
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bool VideoStreamPlaybackWebm::is_paused(bool p_paused) const {
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return paused;
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}
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void VideoStreamPlaybackWebm::set_loop(bool p_enable) {
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//Empty
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}
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bool VideoStreamPlaybackWebm::has_loop() const {
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return false;
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}
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float VideoStreamPlaybackWebm::get_length() const {
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if (webm)
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return webm->getLength();
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return 0.0f;
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}
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float VideoStreamPlaybackWebm::get_pos() const {
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return video_pos;
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}
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void VideoStreamPlaybackWebm::seek_pos(float p_time) {
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//Not implemented
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}
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void VideoStreamPlaybackWebm::set_audio_track(int p_idx) {
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audio_track = p_idx;
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}
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Ref<Texture> VideoStreamPlaybackWebm::get_texture() {
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return texture;
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}
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void VideoStreamPlaybackWebm::update(float p_delta) {
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if ((!playing || paused) || !video)
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return;
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bool audio_buffer_full = false;
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if (samples_offset > -1) {
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//Mix remaining samples
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const int to_read = num_decoded_samples - samples_offset;
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const int mixed = mix_callback(mix_udata, pcm + samples_offset * webm->getChannels(), to_read);
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if (mixed != to_read) {
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samples_offset += mixed;
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audio_buffer_full = true;
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} else {
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samples_offset = -1;
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}
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}
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const bool hasAudio = (audio && mix_callback);
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while ((hasAudio && (!audio_buffer_full || !has_enough_video_frames())) || (!hasAudio && video_frames_pos == 0)) {
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if (hasAudio && !audio_buffer_full && audio_frame->isValid() && audio->getPCMS16(*audio_frame, pcm, num_decoded_samples) && num_decoded_samples > 0) {
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const int mixed = mix_callback(mix_udata, pcm, num_decoded_samples);
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if (mixed != num_decoded_samples) {
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samples_offset = mixed;
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audio_buffer_full = true;
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}
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}
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WebMFrame *video_frame;
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if (video_frames_pos >= video_frames_capacity) {
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WebMFrame **video_frames_new = (WebMFrame **)memrealloc(video_frames, ++video_frames_capacity * sizeof(void *));
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ERR_FAIL_COND(!video_frames_new); //Out of memory
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(video_frames = video_frames_new)[video_frames_capacity - 1] = memnew(WebMFrame);
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}
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video_frame = video_frames[video_frames_pos];
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if (!webm->readFrame(video_frame, audio_frame)) //This will invalidate frames
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break; //Can't demux, EOS?
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if (video_frame->isValid())
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++video_frames_pos;
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};
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const double video_delay = video->getFramesDelay() * video_frame_delay;
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bool want_this_frame = false;
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while (video_frames_pos > 0 && !want_this_frame) {
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WebMFrame *video_frame = video_frames[0];
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if (video_frame->time <= time + video_delay) {
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if (video->decode(*video_frame)) {
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VPXDecoder::IMAGE_ERROR err;
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VPXDecoder::Image image;
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while ((err = video->getImage(image)) != VPXDecoder::NO_FRAME) {
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want_this_frame = (time - video_frame->time <= video_frame_delay);
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if (want_this_frame) {
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if (err == VPXDecoder::NO_ERROR && image.w == webm->getWidth() && image.h == webm->getHeight()) {
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DVector<uint8_t>::Write w = frame_data.write();
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bool converted = false;
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if (image.chromaShiftW == 1 && image.chromaShiftH == 1) {
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yuv420_2_rgb8888(w.ptr(), image.planes[0], image.planes[2], image.planes[1], image.w, image.h, image.linesize[0], image.linesize[1], image.w << 2, 0);
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// libyuv::I420ToARGB(image.planes[0], image.linesize[0], image.planes[2], image.linesize[2], image.planes[1], image.linesize[1], w.ptr(), image.w << 2, image.w, image.h);
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converted = true;
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} else if (image.chromaShiftW == 1 && image.chromaShiftH == 0) {
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yuv422_2_rgb8888(w.ptr(), image.planes[0], image.planes[2], image.planes[1], image.w, image.h, image.linesize[0], image.linesize[1], image.w << 2, 0);
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// libyuv::I422ToARGB(image.planes[0], image.linesize[0], image.planes[2], image.linesize[2], image.planes[1], image.linesize[1], w.ptr(), image.w << 2, image.w, image.h);
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converted = true;
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} else if (image.chromaShiftW == 0 && image.chromaShiftH == 0) {
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yuv444_2_rgb8888(w.ptr(), image.planes[0], image.planes[2], image.planes[1], image.w, image.h, image.linesize[0], image.linesize[1], image.w << 2, 0);
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// libyuv::I444ToARGB(image.planes[0], image.linesize[0], image.planes[2], image.linesize[2], image.planes[1], image.linesize[1], w.ptr(), image.w << 2, image.w, image.h);
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converted = true;
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} else if (image.chromaShiftW == 2 && image.chromaShiftH == 0) {
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// libyuv::I411ToARGB(image.planes[0], image.linesize[0], image.planes[2], image.linesize[2], image.planes[1], image.linesize[1], w.ptr(), image.w << 2, image.w, image.h);
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// converted = true;
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}
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if (converted)
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texture->set_data(Image(image.w, image.h, 0, Image::FORMAT_RGBA, frame_data)); //Zero copy send to visual server
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}
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break;
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}
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}
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}
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video_frame_delay = video_frame->time - video_pos;
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video_pos = video_frame->time;
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memmove(video_frames, video_frames + 1, (--video_frames_pos) * sizeof(void *));
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video_frames[video_frames_pos] = video_frame;
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} else {
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break;
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}
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}
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time += p_delta;
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if (video_frames_pos == 0 && webm->isEOS())
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stop();
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}
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void VideoStreamPlaybackWebm::set_mix_callback(VideoStreamPlayback::AudioMixCallback p_callback, void *p_userdata) {
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mix_callback = p_callback;
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mix_udata = p_userdata;
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}
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int VideoStreamPlaybackWebm::get_channels() const {
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if (audio)
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return webm->getChannels();
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return 0;
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}
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int VideoStreamPlaybackWebm::get_mix_rate() const {
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if (audio)
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return webm->getSampleRate();
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return 0;
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}
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inline bool VideoStreamPlaybackWebm::has_enough_video_frames() const
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{
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if (video_frames_pos > 0) {
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const double audio_delay = AudioServer::get_singleton()->get_output_delay();
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const double video_time = video_frames[video_frames_pos - 1]->time;
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return video_time >= time + audio_delay + delay_compensation;
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}
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return false;
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}
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void VideoStreamPlaybackWebm::delete_pointers() {
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if (pcm)
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memfree(pcm);
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if (audio_frame)
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memdelete(audio_frame);
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for (int i = 0; i < video_frames_capacity; ++i)
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memdelete(video_frames[i]);
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if (video_frames)
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memfree(video_frames);
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if (video)
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memdelete(video);
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if (audio)
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memdelete(audio);
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if (webm)
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memdelete(webm);
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}
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/**/
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RES ResourceFormatLoaderVideoStreamWebm::load(const String &p_path, const String &p_original_path, Error *r_error) {
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Ref<VideoStreamWebm> stream = memnew(VideoStreamWebm);
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stream->set_file(p_path);
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if (r_error)
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*r_error = OK;
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return stream;
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}
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void ResourceFormatLoaderVideoStreamWebm::get_recognized_extensions(List<String> *p_extensions) const {
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p_extensions->push_back("webm");
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}
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bool ResourceFormatLoaderVideoStreamWebm::handles_type(const String &p_type) const {
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return (p_type == "VideoStream" || p_type == "VideoStreamWebm");
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}
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String ResourceFormatLoaderVideoStreamWebm::get_resource_type(const String &p_path) const {
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const String exl = p_path.extension().to_lower();
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if (exl == "webm")
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return "VideoStreamWebm";
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return "";
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}
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/**/
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VideoStreamWebm::VideoStreamWebm() :
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audio_track(0)
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{}
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Ref<VideoStreamPlayback> VideoStreamWebm::instance_playback() {
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Ref<VideoStreamPlaybackWebm> pb = memnew(VideoStreamPlaybackWebm);
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pb->set_audio_track(audio_track);
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if (pb->open_file(file))
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return pb;
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return NULL;
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}
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void VideoStreamWebm::set_file(const String &p_file) {
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file = p_file;
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}
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void VideoStreamWebm::set_audio_track(int p_track) {
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audio_track = p_track;
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}
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