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add some support for sample formats other than 16-bit int to the lavc audio provider. untested and will probably break spectacularly. 

Originally committed to SVN as r2320.
This commit is contained in:
Karl Blomster 2008-09-05 12:55:45 +00:00
parent c28b96b502
commit 82059cbfe2
1 changed files with 6 additions and 9 deletions
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15
aegisub/audio_provider_lavc.cpp
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@ -56,14 +56,9 @@
/* - done in posix/defines.h /* - done in posix/defines.h
*/ */
#include "audio_provider_lavc.h"
extern "C" {
#include <ffmpeg/avcodec.h>
#include <ffmpeg/avformat.h>
}
#include "mkv_wrap.h" #include "mkv_wrap.h"
#include "lavc_file.h" #include "lavc_file.h"
#include "audio_provider_lavc.h"
#include "lavc_file.h" #include "lavc_file.h"
#include "utils.h" #include "utils.h"
#include "options.h" #include "options.h"
@ -123,11 +118,13 @@ LAVCAudioProvider::LAVCAudioProvider(Aegisub::String _filename)
/* we rely on the intermediate audio provider to do downmixing for us later if necessary */ /* we rely on the intermediate audio provider to do downmixing for us later if necessary */
channels = codecContext->channels; channels = codecContext->channels;
/* FIXME: we need support for more audio types than just 16-bit int */ /* TODO: test if anything but S16 actually works! */
switch (codecContext->sample_fmt) { switch (codecContext->sample_fmt) {
case SAMPLE_FMT_S16: bytes_per_sample = 2; break; case SAMPLE_FMT_U8: bytes_per_sample = 1; break;
case SAMPLE_FMT_S16: bytes_per_sample = 2; break;
case SAMPLE_FMT_S32: bytes_per_sample = 4; break; /* downmixing provider doesn't support this, will definitely not work */
default: default:
throw _T("ffmpeg audio provider: Only 16-bit audio is supported"); throw _T("ffmpeg audio provider: Unknown or unsupported sample format");
} }
/* initiate resampling if necessary */ /* initiate resampling if necessary */