OSCL_EXPORT_REF int32 CPvGsmAmrEncoder::CleanupEncoder()
{
// call terminate function of GSM AMR encoder
AMREncodeExit(&iEncState, &iSidState);
iEncState = NULL;
iSidState = NULL;
return GSMAMR_ENC_NO_ERROR;
}
status_t AMRNBEncoder::stop() {
if (!mStarted) {
LOGW("Call stop() when encoder has not started.");
return OK;
}
if (mInputBuffer) {
mInputBuffer->release();
mInputBuffer = NULL;
}
delete mBufferGroup;
mBufferGroup = NULL;
mSource->stop();
AMREncodeExit(&mEncState, &mSidState);
mEncState = mSidState = NULL;
mStarted = false;
return OK;
}
int encode(int mode, const char *srcFile, const char *dstFile) {
int retVal = EXIT_SUCCESS;
FILE *fSrc = NULL;
FILE *fDst = NULL;
int frameNum = 0;
bool eofReached = false;
uint16_t *inputBuf = NULL;
uint8_t *outputBuf = NULL;
AmrNbEncState *amr = NULL;
clock_t start, finish;
double duration = 0.0;
// Open input file.
fSrc = fopen(srcFile, "rb");
if (fSrc == NULL) {
fprintf(stderr, "Error opening input file\n");
retVal = EXIT_FAILURE;
goto safe_exit;
}
// Open output file.
fDst = fopen(dstFile, "wb");
if (fDst == NULL) {
fprintf(stderr, "Error opening output file\n");
retVal = EXIT_FAILURE;
goto safe_exit;
}
// Allocate input buffer.
inputBuf = (uint16_t*) malloc(kInputSize);
assert(inputBuf != NULL);
// Allocate output buffer.
outputBuf = (uint8_t*) malloc(kOutputSize);
assert(outputBuf != NULL);
// Initialize encoder.
amr = (AmrNbEncState*) malloc(sizeof(AmrNbEncState));
AMREncodeInit(&amr->encCtx, &amr->pidSyncCtx, 0);
// Write file header.
fwrite("#!AMR\n", 1, 6, fDst);
while (1) {
// Read next input frame.
int bytesRead;
bytesRead = fread(inputBuf, 1, kInputSize, fSrc);
if (bytesRead != kInputSize && !feof(fSrc)) {
retVal = EXIT_FAILURE; // Invalid magic number.
fprintf(stderr, "Error reading input file\n");
goto safe_exit;
} else if (feof(fSrc) && bytesRead == 0) {
eofReached = true;
break;
}
start = clock();
// Encode the frame.
Frame_Type_3GPP frame_type = (Frame_Type_3GPP) mode;
int bytesGenerated;
bytesGenerated = AMREncode(amr->encCtx, amr->pidSyncCtx, (Mode)mode,
(Word16*)inputBuf, outputBuf, &frame_type,
AMR_TX_WMF);
// Convert from WMF to RFC 3267 format.
if (bytesGenerated > 0) {
outputBuf[0] = ((outputBuf[0] << 3) | 4) & 0x7c;
}
finish = clock();
duration += finish - start;
if (bytesGenerated < 0) {
retVal = EXIT_FAILURE;
fprintf(stderr, "Encoding error\n");
goto safe_exit;
}
frameNum++;
printf(" Frames processed: %d\n", frameNum);
// Write the output.
fwrite(outputBuf, 1, bytesGenerated, fDst);
}
// Dump the time taken by encode.
printf("\n%2.5lf seconds\n", (double)duration/CLOCKS_PER_SEC);
safe_exit:
// Free the encoder instance.
if (amr) {
AMREncodeExit(&amr->encCtx, &amr->pidSyncCtx);
free(amr);
}
// Free input and output buffer.
free(inputBuf);
free(outputBuf);
// Close the input and output files.
if (fSrc) {
fclose(fSrc);
}
if (fDst) {
fclose(fDst);
}
return retVal;
}
void Encoder_Interface_exit(void* s) {
struct encoder_state* state = (struct encoder_state*) s;
AMREncodeExit(&state->encCtx, &state->pidSyncCtx);
free(state);
}
SoftAMRNBEncoder::~SoftAMRNBEncoder() {
if (mEncState != NULL) {
AMREncodeExit(&mEncState, &mSidState);
mEncState = mSidState = NULL;
}
}