/*************************************************************************/ /* audio_stream_ogg_vorbis.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2018 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" size_t AudioStreamPlaybackOGGVorbis::_ov_read_func(void *p_dst, size_t p_data, size_t p_count, void *_f) { //printf("read to %p, %i bytes, %i nmemb, %p\n",p_dst,p_data,p_count,_f); FileAccess *fa = (FileAccess *)_f; size_t read_total = p_data * p_count; if (fa->eof_reached()) return 0; uint8_t *dst = (uint8_t *)p_dst; int read = fa->get_buffer(dst, read_total); return read; } int AudioStreamPlaybackOGGVorbis::_ov_seek_func(void *_f, ogg_int64_t offs, int whence) { //printf("seek to %p, offs %i, whence %i\n",_f,(int)offs,whence); #ifdef SEEK_SET //printf("seek set defined\n"); FileAccess *fa = (FileAccess *)_f; if (whence == SEEK_SET) { fa->seek(offs); } else if (whence == SEEK_CUR) { fa->seek(fa->get_position() + offs); } else if (whence == SEEK_END) { fa->seek_end(offs); } else { ERR_PRINT("Vorbis seek function failure: Unexpected value in _whence\n"); } int ret = fa->eof_reached() ? -1 : 0; //printf("returning %i\n",ret); return ret; #else return -1; // no seeking #endif } int AudioStreamPlaybackOGGVorbis::_ov_close_func(void *_f) { //printf("close %p\n",_f); if (!_f) return 0; FileAccess *fa = (FileAccess *)_f; if (fa->is_open()) fa->close(); return 0; } long AudioStreamPlaybackOGGVorbis::_ov_tell_func(void *_f) { //printf("close %p\n",_f); FileAccess *fa = (FileAccess *)_f; return fa->get_position(); } int AudioStreamPlaybackOGGVorbis::mix(int16_t *p_buffer, int p_frames) { if (!playing) return 0; int total = p_frames; while (true) { int todo = p_frames; if (todo == 0 || todo < MIN_MIX) { break; } #ifdef BIG_ENDIAN_ENABLED long ret = ov_read(&vf, (char *)p_buffer, todo * stream_channels * sizeof(int16_t), 1, 2, 1, ¤t_section); #else long ret = ov_read(&vf, (char *)p_buffer, todo * stream_channels * sizeof(int16_t), 0, 2, 1, ¤t_section); #endif if (ret < 0) { playing = false; ERR_EXPLAIN("Error reading OGG Vorbis File: " + file); ERR_BREAK(ret < 0); } else if (ret == 0) { // end of song, reload? ov_clear(&vf); _close_file(); if (!has_loop()) { playing = false; repeats = 1; break; } f = FileAccess::open(file, FileAccess::READ); int errv = ov_open_callbacks(f, &vf, NULL, 0, _ov_callbacks); if (errv != 0) { playing = false; break; // :( } if (loop_restart_time) { bool ok = ov_time_seek(&vf, loop_restart_time) == 0; if (!ok) { playing = false; //ERR_EXPLAIN("loop restart time rejected"); ERR_PRINT("loop restart time rejected") } frames_mixed = stream_srate * loop_restart_time; } else { frames_mixed = 0; } repeats++; continue; } ret /= stream_channels; ret /= sizeof(int16_t); frames_mixed += ret; p_buffer += ret * stream_channels; p_frames -= ret; } return total - p_frames; } void AudioStreamPlaybackOGGVorbis::play(float p_from) { if (playing) stop(); if (_load_stream() != OK) return; frames_mixed = 0; playing = true; if (p_from > 0) { seek(p_from); } } void AudioStreamPlaybackOGGVorbis::_close_file() { if (f) { memdelete(f); f = NULL; } } bool AudioStreamPlaybackOGGVorbis::is_playing() const { return playing; } void AudioStreamPlaybackOGGVorbis::stop() { _clear_stream(); playing = false; //_clear(); } float AudioStreamPlaybackOGGVorbis::get_playback_position() const { int32_t frames = int32_t(frames_mixed); if (frames < 0) frames = 0; return double(frames) / stream_srate; } void AudioStreamPlaybackOGGVorbis::seek(float p_time) { if (!playing) return; bool ok = ov_time_seek(&vf, p_time) == 0; ERR_FAIL_COND(!ok); frames_mixed = stream_srate * p_time; } String AudioStreamPlaybackOGGVorbis::get_stream_name() const { return ""; } void AudioStreamPlaybackOGGVorbis::set_loop(bool p_enable) { loops = p_enable; } bool AudioStreamPlaybackOGGVorbis::has_loop() const { return loops; } int AudioStreamPlaybackOGGVorbis::get_loop_count() const { return repeats; } Error AudioStreamPlaybackOGGVorbis::set_file(const String &p_file) { file = p_file; stream_valid = false; Error err; f = FileAccess::open(file, FileAccess::READ, &err); if (err) { ERR_FAIL_COND_V(err, err); } int errv = ov_open_callbacks(f, &vf, NULL, 0, _ov_callbacks); switch (errv) { case OV_EREAD: { // - A read from media returned an error. memdelete(f); f = NULL; ERR_FAIL_V(ERR_FILE_CANT_READ); } break; case OV_EVERSION: // - Vorbis version mismatch. case OV_ENOTVORBIS: { // - Bitstream is not Vorbis data. memdelete(f); f = NULL; ERR_FAIL_V(ERR_FILE_UNRECOGNIZED); } break; case OV_EBADHEADER: { // - Invalid Vorbis bitstream header. memdelete(f); f = NULL; ERR_FAIL_V(ERR_FILE_CORRUPT); } break; case OV_EFAULT: { // - Internal logic fault; indicates a bug or heap/stack corruption. memdelete(f); f = NULL; ERR_FAIL_V(ERR_BUG); } break; } const vorbis_info *vinfo = ov_info(&vf, -1); stream_channels = vinfo->channels; stream_srate = vinfo->rate; length = ov_time_total(&vf, -1); ov_clear(&vf); memdelete(f); f = NULL; stream_valid = true; return OK; } Error AudioStreamPlaybackOGGVorbis::_load_stream() { ERR_FAIL_COND_V(!stream_valid, ERR_UNCONFIGURED); _clear_stream(); if (file == "") return ERR_INVALID_DATA; Error err; f = FileAccess::open(file, FileAccess::READ, &err); if (err) { ERR_FAIL_COND_V(err, err); } int errv = ov_open_callbacks(f, &vf, NULL, 0, _ov_callbacks); switch (errv) { case OV_EREAD: { // - A read from media returned an error. memdelete(f); f = NULL; ERR_FAIL_V(ERR_FILE_CANT_READ); } break; case OV_EVERSION: // - Vorbis version mismatch. case OV_ENOTVORBIS: { // - Bitstream is not Vorbis data. memdelete(f); f = NULL; ERR_FAIL_V(ERR_FILE_UNRECOGNIZED); } break; case OV_EBADHEADER: { // - Invalid Vorbis bitstream header. memdelete(f); f = NULL; ERR_FAIL_V(ERR_FILE_CORRUPT); } break; case OV_EFAULT: { // - Internal logic fault; indicates a bug or heap/stack corruption. memdelete(f); f = NULL; ERR_FAIL_V(ERR_BUG); } break; } repeats = 0; stream_loaded = true; return OK; } float AudioStreamPlaybackOGGVorbis::get_length() const { if (!stream_loaded) { if (const_cast<AudioStreamPlaybackOGGVorbis *>(this)->_load_stream() != OK) return 0; } return length; } void AudioStreamPlaybackOGGVorbis::_clear_stream() { if (!stream_loaded) return; ov_clear(&vf); _close_file(); stream_loaded = false; //stream_channels=1; playing = false; } void AudioStreamPlaybackOGGVorbis::set_paused(bool p_paused) { paused = p_paused; } bool AudioStreamPlaybackOGGVorbis::is_paused() const { return paused; } AudioStreamPlaybackOGGVorbis::AudioStreamPlaybackOGGVorbis() { loops = false; playing = false; _ov_callbacks.read_func = _ov_read_func; _ov_callbacks.seek_func = _ov_seek_func; _ov_callbacks.close_func = _ov_close_func; _ov_callbacks.tell_func = _ov_tell_func; f = NULL; stream_loaded = false; stream_valid = false; repeats = 0; paused = true; stream_channels = 0; stream_srate = 0; current_section = 0; length = 0; loop_restart_time = 0; } AudioStreamPlaybackOGGVorbis::~AudioStreamPlaybackOGGVorbis() { _clear_stream(); } RES ResourceFormatLoaderAudioStreamOGGVorbis::load(const String &p_path, const String &p_original_path, Error *r_error) { if (r_error) *r_error = OK; AudioStreamOGGVorbis *ogg_stream = memnew(AudioStreamOGGVorbis); ogg_stream->set_file(p_path); return Ref<AudioStreamOGGVorbis>(ogg_stream); } void ResourceFormatLoaderAudioStreamOGGVorbis::get_recognized_extensions(List<String> *p_extensions) const { p_extensions->push_back("ogg"); } String ResourceFormatLoaderAudioStreamOGGVorbis::get_resource_type(const String &p_path) const { if (p_path.get_extension().to_lower() == "ogg") return "AudioStreamOGGVorbis"; return ""; } bool ResourceFormatLoaderAudioStreamOGGVorbis::handles_type(const String &p_type) const { return (p_type == "AudioStream" || p_type == "AudioStreamOGG" || p_type == "AudioStreamOGGVorbis"); }