/**
* Creates a Media Source Reader.
*
* @param env JNI env
* @param path path
* @param ppMediaSrcReader media source reader
* @return HRESULT
*/
HRESULT mf_createMediaSourceReader(JNIEnv *env, jstring path, IMFSourceReader **ppMediaSrcReader) {
HRESULT res = S_OK;
const LPWSTR pwszFilePath = (LPWSTR)env->GetStringChars(path, NULL);
res = MFCreateSourceReaderFromURL(
pwszFilePath,
NULL,
ppMediaSrcReader);
if (HRESULT_CODE(res) == ERROR_FILE_NOT_FOUND
|| HRESULT_CODE(res) == ERROR_PATH_NOT_FOUND
|| HRESULT_CODE(res) == ERROR_NOT_DOS_DISK
|| HRESULT_CODE(res) == ERROR_BAD_NETPATH) {
const char * filePath = env->GetStringUTFChars(path, NULL);
throwFileNotFoundExceptionIfError(env, res, filePath);
env->ReleaseStringUTFChars(path, filePath);
goto bail;
}
if (res != S_OK) {
throwUnsupportedAudioFileExceptionIfError(env, res, "Failed to create source reader from url");
goto bail;
}
bail:
env->ReleaseStringChars(path, (jchar *)pwszFilePath);
return res;
}
/**
* Opens the input file/url and allocates a AVFormatContext for it, but does not open the audio stream with an
* appropriate decoder.
*
* @param env JNIEnv
* @param format_context AVFormatContext
* @param url URL to open
* @return negative value, if something went wrong
*/
int ff_open_format_context(JNIEnv *env, AVFormatContext **format_context, const char *url) {
int res = 0;
int probe_score = 0;
res = avformat_open_input(format_context, url, NULL, NULL);
if (res) {
if (res == AVERROR(ENOENT) || res == AVERROR_HTTP_NOT_FOUND) {
throwFileNotFoundExceptionIfError(env, res, url);
} else if (res == AVERROR_PROTOCOL_NOT_FOUND
|| res == AVERROR_HTTP_BAD_REQUEST
|| res == AVERROR_HTTP_UNAUTHORIZED
|| res == AVERROR_HTTP_FORBIDDEN
|| res == AVERROR_HTTP_OTHER_4XX
|| res == AVERROR_HTTP_SERVER_ERROR
|| res == AVERROR(EIO)) {
throwIOExceptionIfError(env, res, url);
} else {
throwUnsupportedAudioFileExceptionIfError(env, res, "Failed to open audio file");
}
goto bail;
}
probe_score = av_format_get_probe_score(*format_context);
#ifdef DEBUG
fprintf(stderr, "ff_open_format_context(): probe score=%i\n", probe_score);
#endif
if (probe_score < MIN_PROBE_SCORE) {
res = probe_score;
throwUnsupportedAudioFileExceptionIfError(env, probe_score, "Probe score too low");
goto bail;
}
res = avformat_find_stream_info(*format_context, NULL);
if (res < 0) {
throwUnsupportedAudioFileExceptionIfError(env, res, "Failed to find stream info");
goto bail;
}
bail:
return res;
}
