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media_decoder tuning: find first audio stream, errors for no tracks, do not bother with seek, add intermediary variables to assist in viewing functionality in bdb

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6208 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
shatty 2004-01-21 09:09:43 +00:00
parent 31b34533a7
commit 24817be98a
1 changed files with 25 additions and 11 deletions
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36
src/tests/kits/media/media_decoder/media_decoder.cpp
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@ -19,7 +19,10 @@ public:
protected:
virtual status_t GetNextChunk(const void **chunkData, size_t *chunkLen,
media_header *mh) {
return track->ReadChunk((char**)chunkData,(int32*)chunkLen,mh);
memset(mh,0,sizeof(media_header));
status_t result = track->ReadChunk((char**)chunkData,(int32*)chunkLen,mh);
const void * data = *chunkData;
return result;
}
};
@ -31,17 +34,32 @@ int main (int argc, const char ** argv) {
fprintf(stderr,"%s: invalid usage\n",argv[0]);
fprintf(stderr,"supply an input file and an output file:\n");
fprintf(stderr," media_decoder input.mp3 output.raw\n");
return 0;
return -1;
}
// open the file using BMediaFile/BMediaTrack
// open the file using BMediaFile
BFile * file = new BFile(argv[1],B_READ_ONLY);
BMediaFile * mf = new BMediaFile(file);
BMediaTrack * track = mf->TrackAt(0);
// create a BMediaDecoder and initialize it
if (mf->CountTracks() == 0) {
fprintf(stderr,"no tracks found in %s\n",argv[1]);
return -1;
}
media_format format;
memset(&format,0,sizeof(format));
track->EncodedFormat(&format);
// find an audio track
BMediaTrack * track = 0;
for (int i = 0; i < mf->CountTracks() ; i++) {
track = mf->TrackAt(i);
track->EncodedFormat(&format);
if (format.IsAudio()) {
break;
}
track = 0;
}
if (track == 0) {
fprintf(stderr,"no audio stream found in %s\n",argv[1]);
return -1;
}
// create a BMediaDecoder and initialize it
FileDecoder * fd = new FileDecoder(track,&format);
// fd->SetInputFormat(&format);
memset(&format,0,sizeof(format));
@ -51,10 +69,6 @@ int main (int argc, const char ** argv) {
// open the output file
BFile * file2 = new BFile(argv[2],B_WRITE_ONLY|B_CREATE_FILE|B_ERASE_FILE);
// be sure we are at the start
int64 frame = 0;
track->SeekToFrame(&frame,0);
// decode until we hit an error
uint8 * buffer = new uint8[format.u.raw_audio.buffer_size];
int64 size = 0;