d8223ffa75
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!
(cherry picked from commit c7bc44d5ad)
414 lines
9.2 KiB
C++
414 lines
9.2 KiB
C++
/*************************************************************************/
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/* audio_stream_mpc.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 "audio_stream_mpc.h"
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Error AudioStreamPlaybackMPC::_open_file() {
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if (f) {
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memdelete(f);
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f=NULL;
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}
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Error err;
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//printf("mpc open file %ls\n", file.c_str());
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f=FileAccess::open(file,FileAccess::READ,&err);
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if (err) {
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f=NULL;
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ERR_FAIL_V(err);
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return err;
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}
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//printf("file size is %i\n", f->get_len());
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//f->seek_end(0);
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streamlen=f->get_len();
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//f->seek(0);
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if (streamlen<=0) {
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memdelete(f);
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f=NULL;
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ERR_FAIL_V(ERR_INVALID_DATA);
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}
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data_ofs=0;
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if (preload) {
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data.resize(streamlen);
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DVector<uint8_t>::Write w = data.write();
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f->get_buffer(&w[0],streamlen);
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memdelete(f);
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f=NULL;
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}
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return OK;
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}
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void AudioStreamPlaybackMPC::_close_file() {
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if (f) {
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memdelete(f);
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f=NULL;
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}
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data.resize(0);
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streamlen=0;
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data_ofs=0;
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}
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int AudioStreamPlaybackMPC::_read_file(void *p_dst,int p_bytes) {
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if (f)
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return f->get_buffer((uint8_t*)p_dst,p_bytes);
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DVector<uint8_t>::Read r = data.read();
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if (p_bytes+data_ofs > streamlen) {
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p_bytes=streamlen-data_ofs;
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}
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copymem(p_dst,&r[data_ofs],p_bytes);
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//print_line("read file: "+itos(p_bytes));
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data_ofs+=p_bytes;
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return p_bytes;
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}
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bool AudioStreamPlaybackMPC::_seek_file(int p_pos){
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if (p_pos<0 || p_pos>streamlen)
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return false;
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if (f) {
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f->seek(p_pos);
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return true;
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}
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//print_line("read file to: "+itos(p_pos));
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data_ofs=p_pos;
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return true;
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}
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int AudioStreamPlaybackMPC::_tell_file() const{
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if (f)
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return f->get_pos();
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//print_line("tell file, get: "+itos(data_ofs));
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return data_ofs;
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}
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int AudioStreamPlaybackMPC::_sizeof_file() const{
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//print_line("sizeof file, get: "+itos(streamlen));
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return streamlen;
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}
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bool AudioStreamPlaybackMPC::_canseek_file() const{
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//print_line("canseek file, get true");
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return true;
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}
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/////////////////////
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mpc_int32_t AudioStreamPlaybackMPC::_mpc_read(mpc_reader *p_reader,void *p_dst, mpc_int32_t p_bytes) {
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AudioStreamPlaybackMPC *smpc=(AudioStreamPlaybackMPC *)p_reader->data;
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return smpc->_read_file(p_dst,p_bytes);
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}
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mpc_bool_t AudioStreamPlaybackMPC::_mpc_seek(mpc_reader *p_reader,mpc_int32_t p_offset) {
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AudioStreamPlaybackMPC *smpc=(AudioStreamPlaybackMPC *)p_reader->data;
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return smpc->_seek_file(p_offset);
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}
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mpc_int32_t AudioStreamPlaybackMPC::_mpc_tell(mpc_reader *p_reader) {
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AudioStreamPlaybackMPC *smpc=(AudioStreamPlaybackMPC *)p_reader->data;
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return smpc->_tell_file();
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}
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mpc_int32_t AudioStreamPlaybackMPC::_mpc_get_size(mpc_reader *p_reader) {
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AudioStreamPlaybackMPC *smpc=(AudioStreamPlaybackMPC *)p_reader->data;
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return smpc->_sizeof_file();
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}
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mpc_bool_t AudioStreamPlaybackMPC::_mpc_canseek(mpc_reader *p_reader) {
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AudioStreamPlaybackMPC *smpc=(AudioStreamPlaybackMPC *)p_reader->data;
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return smpc->_canseek_file();
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}
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int AudioStreamPlaybackMPC::mix(int16_t* p_bufer,int p_frames) {
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if (!active || paused)
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return 0;
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int todo=p_frames;
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while(todo>MPC_DECODER_BUFFER_LENGTH/si.channels) {
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mpc_frame_info frame;
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frame.buffer=sample_buffer;
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mpc_status err = mpc_demux_decode(demux, &frame);
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if (frame.bits!=-1) {
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int16_t *dst_buff = p_bufer;
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#ifdef MPC_FIXED_POINT
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for( int i = 0; i < frame.samples * si.channels; i++) {
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int tmp = sample_buffer[i] >> MPC_FIXED_POINT_FRACTPART;
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if (tmp > ((1 << 15) - 1)) tmp = ((1 << 15) - 1);
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if (tmp < -(1 << 15)) tmp = -(1 << 15);
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dst_buff[i] = tmp;
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}
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#else
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for( int i = 0; i < frame.samples * si.channels; i++) {
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int tmp = Math::fast_ftoi(sample_buffer[i]*32767.0);
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if (tmp > ((1 << 15) - 1)) tmp = ((1 << 15) - 1);
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if (tmp < -(1 << 15)) tmp = -(1 << 15);
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dst_buff[i] = tmp;
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}
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#endif
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int frames = frame.samples;
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p_bufer+=si.channels*frames;
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todo-=frames;
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} else {
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if (err != MPC_STATUS_OK) {
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stop();
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ERR_PRINT("Error decoding MPC");
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break;
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} else {
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//finished
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if (!loop) {
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stop();
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break;
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} else {
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loops++;
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mpc_demux_exit(demux);
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_seek_file(0);
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demux = mpc_demux_init(&reader);
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//do loop somehow
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}
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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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Error AudioStreamPlaybackMPC::_reload() {
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ERR_FAIL_COND_V(demux!=NULL, ERR_FILE_ALREADY_IN_USE);
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Error err = _open_file();
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ERR_FAIL_COND_V(err!=OK,ERR_CANT_OPEN);
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demux = mpc_demux_init(&reader);
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ERR_FAIL_COND_V(!demux,ERR_CANT_CREATE);
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mpc_demux_get_info(demux, &si);
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return OK;
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}
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void AudioStreamPlaybackMPC::set_file(const String& p_file) {
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file=p_file;
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Error err = _open_file();
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ERR_FAIL_COND(err!=OK);
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demux = mpc_demux_init(&reader);
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ERR_FAIL_COND(!demux);
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mpc_demux_get_info(demux, &si);
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stream_min_size=MPC_DECODER_BUFFER_LENGTH*2/si.channels;
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stream_rate=si.sample_freq;
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stream_channels=si.channels;
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mpc_demux_exit(demux);
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demux=NULL;
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_close_file();
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}
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String AudioStreamPlaybackMPC::get_file() const {
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return file;
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}
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void AudioStreamPlaybackMPC::play(float p_offset) {
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if (active)
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stop();
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active=false;
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Error err = _open_file();
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ERR_FAIL_COND(err!=OK);
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if (_reload()!=OK)
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return;
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active=true;
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loops=0;
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}
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void AudioStreamPlaybackMPC::stop() {
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if (!active)
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return;
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if (demux) {
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mpc_demux_exit(demux);
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demux=NULL;
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}
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_close_file();
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active=false;
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}
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bool AudioStreamPlaybackMPC::is_playing() const {
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return active;
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}
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void AudioStreamPlaybackMPC::set_loop(bool p_enable) {
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loop=p_enable;
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}
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bool AudioStreamPlaybackMPC::has_loop() const {
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return loop;
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}
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float AudioStreamPlaybackMPC::get_length() const {
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return 0;
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}
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String AudioStreamPlaybackMPC::get_stream_name() const {
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return "";
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}
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int AudioStreamPlaybackMPC::get_loop_count() const {
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return 0;
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}
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float AudioStreamPlaybackMPC::get_pos() const {
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return 0;
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}
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void AudioStreamPlaybackMPC::seek_pos(float p_time) {
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}
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void AudioStreamPlaybackMPC::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("set_file","name"),&AudioStreamPlaybackMPC::set_file);
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ObjectTypeDB::bind_method(_MD("get_file"),&AudioStreamPlaybackMPC::get_file);
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ADD_PROPERTYNZ( PropertyInfo(Variant::STRING,"file",PROPERTY_HINT_FILE,"mpc"), _SCS("set_file"), _SCS("get_file"));
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}
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AudioStreamPlaybackMPC::AudioStreamPlaybackMPC() {
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preload=false;
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f=NULL;
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streamlen=0;
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data_ofs=0;
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active=false;
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paused=false;
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loop=false;
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demux=NULL;
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reader.data=this;
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reader.read=_mpc_read;
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reader.seek=_mpc_seek;
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reader.tell=_mpc_tell;
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reader.get_size=_mpc_get_size;
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reader.canseek=_mpc_canseek;
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loops=0;
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}
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AudioStreamPlaybackMPC::~AudioStreamPlaybackMPC() {
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stop();
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if (f)
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memdelete(f);
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}
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RES ResourceFormatLoaderAudioStreamMPC::load(const String &p_path, const String& p_original_path, Error *r_error) {
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if (r_error)
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*r_error=OK; //streamed so it will always work..
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AudioStreamMPC *mpc_stream = memnew(AudioStreamMPC);
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mpc_stream->set_file(p_path);
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return Ref<AudioStreamMPC>(mpc_stream);
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}
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void ResourceFormatLoaderAudioStreamMPC::get_recognized_extensions(List<String> *p_extensions) const {
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p_extensions->push_back("mpc");
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}
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bool ResourceFormatLoaderAudioStreamMPC::handles_type(const String& p_type) const {
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return (p_type=="AudioStream") || (p_type=="AudioStreamMPC");
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}
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String ResourceFormatLoaderAudioStreamMPC::get_resource_type(const String &p_path) const {
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if (p_path.extension().to_lower()=="mpc")
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return "AudioStreamMPC";
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return "";
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}
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