status_t
MP3Encoder::Flush()
{
if (m_cookie == 0) return B_OK;
if (m_bufAvail > 0)
{
memset(m_buffer+m_bufAvail, 0, m_chunkSize-m_bufAvail);
status_t err = EncodeBuffer(m_buffer, m_chunkSize);
if (err < B_OK) return err;
}
return WriteChunk(m_buffer, mp3_encode(m_cookie, NULL, 0, m_buffer), m_LastEncodeInfo);
}
status_t MP3Encoder::EncodeBuffer( const char *src, int32 src_length)
{
assert(src_length == 1152*m_format.channel_count*2);
char * output = (char *)alloca(src_length); /* assume each packet will shrink, which is safe for the blade codec */
int outputSize = mp3_encode(m_cookie, src, src_length, output);
if (outputSize > 0)
{
m_LastEncodeInfo->flags |= B_MEDIA_KEY_FRAME;
return WriteChunk(output, outputSize, m_LastEncodeInfo);
}
return B_OK;
}
int convert_to_mp3(JNIEnv* env, jobject obj, jstring ifile, jstring ofile) {
const char *fi = 0, *fo = 0;
int fd, fd_out;
if(!ifile || !ofile) {
log_err("convert_to_mp3: invalid arguments");
return 0;
}
fi = (*env)->GetStringUTFChars(env,ifile,NULL);
fo = (*env)->GetStringUTFChars(env,ofile,NULL);
if(!fi || !fo || !*fi || !*fo) {
(*env)->ReleaseStringUTFChars(env,ifile,fi);
(*env)->ReleaseStringUTFChars(env,ofile,fo);
log_err("convert_to_mp3: invalid arguments");
return 0;
}
fd = open(fi, O_RDONLY);
fd_out = open(fo,O_CREAT|O_TRUNC|O_WRONLY);
if(fd < 0 || fd_out < 0) {
if(fd >= 0) {
log_err("cannot open output file");
close(fd);
}
if(fd_out >= 0) {
log_err("cannot open input file");
close(fd_out);
unlink(fo);
}
(*env)->ReleaseStringUTFChars(env,ifile,fi);
(*env)->ReleaseStringUTFChars(env,ofile,fo);
return 0;
}
(*env)->ReleaseStringUTFChars(env,ifile,fi);
(*env)->ReleaseStringUTFChars(env,ofile,fo);
lseek(fd,sizeof(wavhdr),SEEK_SET);
return mp3_encode(fd,fd_out);
}
