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godot/modules/vorbis/audio_stream_ogg_vorbis.cpp

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/*************************************************************************/
/* audio_stream_ogg_vorbis.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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 < MIN_MIX) {
break;
}
#ifdef BIG_ENDIAN_ENABLED
long ret = ov_read(&vf, (char *)p_buffer, todo * stream_channels * sizeof(int16_t), 1, 2, 1, &current_section);
#else
long ret = ov_read(&vf, (char *)p_buffer, todo * stream_channels * sizeof(int16_t), 0, 2, 1, &current_section);
#endif
if (ret < 0) {
playing = false;
ERR_BREAK_MSG(ret < 0, "Error reading OGG Vorbis file: " + file + ".");
} 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_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");
}
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