🛠️🐜 Antkeeper superbuild with dependencies included
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177 lines
5.0 KiB
177 lines
5.0 KiB
/*
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* OpenAL Source Play Example
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*
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* Copyright (c) 2017 by Chris Robinson <chris.kcat@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* 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, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/* This file contains an example for playing a sound buffer. */
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#include <stdio.h>
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#include <assert.h>
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#include <SDL_sound.h>
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#include "AL/al.h"
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#include "AL/alc.h"
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#include "common/alhelpers.h"
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/* LoadBuffer loads the named audio file into an OpenAL buffer object, and
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* returns the new buffer ID.
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*/
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static ALuint LoadSound(const char *filename)
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{
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Sound_Sample *sample;
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ALenum err, format;
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ALuint buffer;
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Uint32 slen;
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/* Open the audio file */
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sample = Sound_NewSampleFromFile(filename, NULL, 65536);
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if(!sample)
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{
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fprintf(stderr, "Could not open audio in %s\n", filename);
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return 0;
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}
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/* Get the sound format, and figure out the OpenAL format */
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if(sample->actual.channels == 1)
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{
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if(sample->actual.format == AUDIO_U8)
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format = AL_FORMAT_MONO8;
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else if(sample->actual.format == AUDIO_S16SYS)
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format = AL_FORMAT_MONO16;
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else
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{
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fprintf(stderr, "Unsupported sample format: 0x%04x\n", sample->actual.format);
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Sound_FreeSample(sample);
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return 0;
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}
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}
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else if(sample->actual.channels == 2)
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{
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if(sample->actual.format == AUDIO_U8)
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format = AL_FORMAT_STEREO8;
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else if(sample->actual.format == AUDIO_S16SYS)
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format = AL_FORMAT_STEREO16;
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else
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{
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fprintf(stderr, "Unsupported sample format: 0x%04x\n", sample->actual.format);
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Sound_FreeSample(sample);
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return 0;
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}
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}
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else
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{
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fprintf(stderr, "Unsupported channel count: %d\n", sample->actual.channels);
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Sound_FreeSample(sample);
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return 0;
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}
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/* Decode the whole audio stream to a buffer. */
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slen = Sound_DecodeAll(sample);
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if(!sample->buffer || slen == 0)
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{
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fprintf(stderr, "Failed to read audio from %s\n", filename);
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Sound_FreeSample(sample);
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return 0;
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}
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/* Buffer the audio data into a new buffer object, then free the data and
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* close the file. */
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buffer = 0;
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alGenBuffers(1, &buffer);
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alBufferData(buffer, format, sample->buffer, slen, sample->actual.rate);
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Sound_FreeSample(sample);
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/* Check if an error occured, and clean up if so. */
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err = alGetError();
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if(err != AL_NO_ERROR)
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{
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fprintf(stderr, "OpenAL Error: %s\n", alGetString(err));
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if(buffer && alIsBuffer(buffer))
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alDeleteBuffers(1, &buffer);
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return 0;
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}
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return buffer;
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}
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int main(int argc, char **argv)
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{
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ALuint source, buffer;
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ALfloat offset;
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ALenum state;
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/* Print out usage if no arguments were specified */
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if(argc < 2)
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{
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fprintf(stderr, "Usage: %s [-device <name>] <filename>\n", argv[0]);
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return 1;
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}
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/* Initialize OpenAL. */
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argv++; argc--;
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if(InitAL(&argv, &argc) != 0)
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return 1;
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/* Initialize SDL_sound. */
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Sound_Init();
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/* Load the sound into a buffer. */
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buffer = LoadSound(argv[0]);
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if(!buffer)
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{
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Sound_Quit();
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CloseAL();
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return 1;
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}
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/* Create the source to play the sound with. */
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source = 0;
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alGenSources(1, &source);
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alSourcei(source, AL_BUFFER, buffer);
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assert(alGetError()==AL_NO_ERROR && "Failed to setup sound source");
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/* Play the sound until it finishes. */
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alSourcePlay(source);
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do {
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al_nssleep(10000000);
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alGetSourcei(source, AL_SOURCE_STATE, &state);
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/* Get the source offset. */
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alGetSourcef(source, AL_SEC_OFFSET, &offset);
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printf("\rOffset: %f ", offset);
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fflush(stdout);
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} while(alGetError() == AL_NO_ERROR && state == AL_PLAYING);
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printf("\n");
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/* All done. Delete resources, and close down SDL_sound and OpenAL. */
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alDeleteSources(1, &source);
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alDeleteBuffers(1, &buffer);
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Sound_Quit();
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CloseAL();
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return 0;
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}
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