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Diffstat (limited to 'source/io/SampleSource.c')
| -rw-r--r-- | source/io/SampleSource.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/source/io/SampleSource.c b/source/io/SampleSource.c new file mode 100644 index 0000000..06ba016 --- /dev/null +++ b/source/io/SampleSource.c @@ -0,0 +1,165 @@ +// +// SampleSource.c - MrsWatson +// Created by Nik Reiman on 1/2/12. +// Copyright (c) 2012 Teragon Audio. All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +// POSSIBILITY OF SUCH DAMAGE. +// + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "base/File.h" +#include "io/SampleSource.h" +#include "logging/EventLogger.h" + +void sampleSourcePrintSupportedTypes(void) +{ + logInfo("Supported audio file types:"); + // We can theoretically support more formats, pretty much anything audiofile supports + // would work here. However, most of those file types are rather uncommon, and require + // special setup when writing, so we only choose the most common ones. +#if USE_AUDIOFILE + logInfo("- AIFF (via libaudiofile)"); +#endif +#if USE_FLAC + logInfo("- FLAC (via libaudiofile)"); +#endif + + // Always supported + logInfo("- PCM"); + +#if USE_AUDIOFILE + logInfo("- WAV (via libaudiofile)"); +#else + logInfo("- WAV (internal)"); +#endif +} + +static SampleSourceType _sampleSourceGuess(const CharString sampleSourceName) +{ + File sourceFile = NULL; + CharString sourceFileExtension = NULL; + SampleSourceType result = SAMPLE_SOURCE_TYPE_PCM; + + if (sampleSourceName == NULL || charStringIsEmpty(sampleSourceName)) { + result = SAMPLE_SOURCE_TYPE_SILENCE; + } else { + // Look for stdin/stdout + if (strlen(sampleSourceName->data) == 1 && sampleSourceName->data[0] == '-') { + result = SAMPLE_SOURCE_TYPE_PCM; + } else { + sourceFile = newFileWithPath(sampleSourceName); + sourceFileExtension = fileGetExtension(sourceFile); + freeFile(sourceFile); + + // If there is no file extension, then automatically assume raw PCM data. Deal with it! + if (charStringIsEmpty(sourceFileExtension)) { + result = SAMPLE_SOURCE_TYPE_PCM; + } + // Possible file extensions for raw PCM data + else if (charStringIsEqualToCString(sourceFileExtension, "pcm", true) || + charStringIsEqualToCString(sourceFileExtension, "raw", true) || + charStringIsEqualToCString(sourceFileExtension, "dat", true)) { + result = SAMPLE_SOURCE_TYPE_PCM; + } + +#if USE_AUDIOFILE + else if (charStringIsEqualToCString(sourceFileExtension, "aif", true) || + charStringIsEqualToCString(sourceFileExtension, "aiff", true)) { + result = SAMPLE_SOURCE_TYPE_AIFF; + } + +#endif + +#if USE_FLAC + else if (charStringIsEqualToCString(sourceFileExtension, "flac", true)) { + result = SAMPLE_SOURCE_TYPE_FLAC; + } + +#endif + + else if (charStringIsEqualToCString(sourceFileExtension, "wav", true) || + charStringIsEqualToCString(sourceFileExtension, "wave", true)) { + result = SAMPLE_SOURCE_TYPE_WAVE; + } else { + logCritical("Sample source '%s' does not match any supported type", sampleSourceName->data); + result = SAMPLE_SOURCE_TYPE_INVALID; + } + } + } + + freeCharString(sourceFileExtension); + return result; +} + +extern SampleSource _newSampleSourceAudiofile(const CharString sampleSourceName, + const SampleSourceType sampleSourceType); +extern SampleSource _newSampleSourcePcm(const CharString sampleSourceName); +extern SampleSource _newSampleSourceSilence(); +extern SampleSource _newSampleSourceWave(const CharString sampleSourceName); + +SampleSource sampleSourceFactory(const CharString sampleSourceName) +{ + SampleSourceType sampleSourceType = _sampleSourceGuess(sampleSourceName); + + switch (sampleSourceType) { + case SAMPLE_SOURCE_TYPE_SILENCE: + return _newSampleSourceSilence(); + + case SAMPLE_SOURCE_TYPE_PCM: + return _newSampleSourcePcm(sampleSourceName); + +#if USE_AUDIOFILE + + case SAMPLE_SOURCE_TYPE_AIFF: + return _newSampleSourceAudiofile(sampleSourceName, sampleSourceType); +#endif + +#if USE_FLAC + + case SAMPLE_SOURCE_TYPE_FLAC: + return _newSampleSourceAudiofile(sampleSourceName, sampleSourceType); +#endif + +#if USE_AUDIOFILE + + case SAMPLE_SOURCE_TYPE_WAVE: + return _newSampleSourceAudiofile(sampleSourceName, sampleSourceType); +#else + + case SAMPLE_SOURCE_TYPE_WAVE: + return _newSampleSourceWave(sampleSourceName); +#endif + + default: + return NULL; + } +} + +void freeSampleSource(SampleSource self) +{ + self->freeSampleSourceData(self->extraData); + freeCharString(self->sourceName); + free(self); +} |