// this function passed the jpeg image buffer in, and returns the decoded
// image
int
decodeImage(OPENMAX_JPEG_DECODER * decoder, char *sourceImage,
size_t imageSize)
{
char *sourceOffset = sourceImage; // we store a seperate
// buffer ot image so we
// can offset it
size_t toread = 0; // bytes left to read from buffer
toread += imageSize;
int bFilled = 0; // have we filled our output
// buffer
bufferIndex = 0;
while (toread > 0) {
// get next buffer from array
OMX_BUFFERHEADERTYPE *pBufHeader =
decoder->ppInputBufferHeader[bufferIndex];
// step index and reset to 0 if required
bufferIndex++;
if (bufferIndex >= decoder->inputBufferHeaderCount)
bufferIndex = 0;
// work out the next chunk to load into the decoder
if (toread > pBufHeader->nAllocLen)
pBufHeader->nFilledLen = pBufHeader->nAllocLen;
else
pBufHeader->nFilledLen = toread;
toread = toread - pBufHeader->nFilledLen;
// pass the bytes to the buffer
memcpy(pBufHeader->pBuffer, sourceOffset, pBufHeader->nFilledLen);
printf("Read into buffer %d\n", pBufHeader->nFilledLen);
// update the buffer pointer and set the input flags
sourceOffset = sourceOffset + pBufHeader->nFilledLen;
pBufHeader->nOffset = 0;
pBufHeader->nFlags = 0;
if (toread <= 0) {
pBufHeader->nFlags = OMX_BUFFERFLAG_EOS;
printf("Added EOS to last inout buffer\n");
}
// empty the current buffer
printf("Emptying buffer\n");
int ret =
OMX_EmptyThisBuffer(decoder->imageDecoder->handle,
pBufHeader);
if (ret != OMX_ErrorNone) {
perror("Empty input buffer");
fprintf(stderr, "return code %x\n", ret);
return OMXJPEG_ERROR_MEMORY;
}
// wait for buffer to empty or port changed event
int done = 0;
while ((done == 0) || (decoder->pOutputBufferHeader == NULL)) {
if (decoder->pOutputBufferHeader == NULL) {
ret =
ilclient_wait_for_event
(decoder->imageDecoder->component,
OMX_EventPortSettingsChanged,
decoder->imageDecoder->outPort, 0, 0, 1, 0, 5);
if (ret == 0) {
portSettingsChanged(decoder);
}
} else {
ret =
ilclient_remove_event(decoder->imageDecoder->component,
OMX_EventPortSettingsChanged,
decoder->imageDecoder->outPort,
0, 0, 1);
if (ret == 0)
portSettingsChangedAgain(decoder);
}
// check to see if buffer is now empty
if (pBufHeader->nFilledLen == 0)
done = 1;
if ((done == 0)
|| (decoder->pOutputBufferHeader == NULL)) {
printf("Buffer is now size %d\n", pBufHeader->nFilledLen);
sleep(1);
}
}
// fill the buffer if we have created the buffer
if (bFilled == 0) {
if ((decoder->pOutputBufferHeader == NULL)) {
portSettingsChanged(decoder);
}
OMX_PARAM_U32TYPE param;
param.nSize = sizeof(OMX_PARAM_U32TYPE);
param.nVersion.nVersion = OMX_VERSION;
param.nPortIndex = decoder->imageDecoder->outPort;
OMX_GetParameter(decoder->imageDecoder->handle,
OMX_IndexParamActiveStream, ¶m);
printf("Active stream %d\n", param.nU32);
printf("Trying to fill output buffer\n");
printState(decoder->imageDecoder->handle);
ret = OMX_FillThisBuffer(decoder->imageDecoder->handle,
decoder->pOutputBufferHeader);
if (ret != OMX_ErrorNone) {
perror("Filling output buffer");
fprintf(stderr, "Error code %x\n", ret);
return OMXJPEG_ERROR_MEMORY;
}
bFilled = 1;
}
}
// wait for buffer to fill
/*
* while(pBufHeader->nFilledLen == 0) { sleep(5); }
*/
// wait for end of stream events
int ret =
ilclient_wait_for_event(decoder->imageDecoder->component,
OMX_EventBufferFlag,
decoder->imageDecoder->outPort, 1,
OMX_BUFFERFLAG_EOS, 1,
0, 2);
if (ret != 0) {
fprintf(stderr, "No EOS event on image decoder %d\n", ret);
} else {
fprintf(stderr, "EOS event on image decoder %d\n", ret);
}
printf("Resized %d\n", decoder->pOutputBufferHeader->nFilledLen);
FILE *fp = fopen("out", "w");
int n;
for (n = 0; n < decoder->pOutputBufferHeader->nFilledLen; n++) {
//fputc(decoder->pOutputBufferHeader->pBuffer[n], fp);
fputc(decoder->ppRenderInputBufferHeader[0]->pBuffer[n], fp);
}
fclose(fp);
printf("File written\n");
renderImage(decoder);
return OMXJPEG_OK;
}
// this function passed the jpeg image buffer in, and returns the decoded
// image
int
decodeImage(OPENMAX_JPEG_DECODER * decoder, char *sourceImage,
size_t imageSize)
{
char *sourceOffset = sourceImage; // we store a seperate
// buffer ot image so we
// can offset it
size_t toread = 0; // bytes left to read from buffer
toread += imageSize;
int bFilled = 0; // have we filled our output
// buffer
bufferIndex = 0;
while (toread > 0) {
// get next buffer from array
OMX_BUFFERHEADERTYPE *pBufHeader =
decoder->ppInputBufferHeader[bufferIndex];
// step index and reset to 0 if required
bufferIndex++;
if (bufferIndex >= decoder->inputBufferHeaderCount)
bufferIndex = 0;
// work out the next chunk to load into the decoder
if (toread > pBufHeader->nAllocLen)
pBufHeader->nFilledLen = pBufHeader->nAllocLen;
else
pBufHeader->nFilledLen = toread;
toread = toread - pBufHeader->nFilledLen;
// pass the bytes to the buffer
memcpy(pBufHeader->pBuffer, sourceOffset, pBufHeader->nFilledLen);
// update the buffer pointer and set the input flags
sourceOffset = sourceOffset + pBufHeader->nFilledLen;
pBufHeader->nOffset = 0;
pBufHeader->nFlags = 0;
if (toread <= 0) {
pBufHeader->nFlags = OMX_BUFFERFLAG_EOS;
}
// empty the current buffer
int ret =
OMX_EmptyThisBuffer(decoder->imageDecoder->handle,
pBufHeader);
if (ret != OMX_ErrorNone) {
perror("Empty input buffer");
fprintf(stderr, "return code %x\n", ret);
return OMXJPEG_ERROR_MEMORY;
}
// wait for buffer to empty or port changed event
int done = 0;
while ((done == 0) && (decoder->pOutputBufferHeader == NULL)) {
if (decoder->pOutputBufferHeader == NULL) {
ret =
ilclient_wait_for_event
(decoder->imageDecoder->component,
OMX_EventPortSettingsChanged,
decoder->imageDecoder->outPort, 0, 0, 1, 0, 5);
if (ret == 0) {
ret = portSettingsChanged(decoder);
if (ret != OMXJPEG_OK)
return ret;
}
} else {
ret =
ilclient_remove_event(decoder->imageDecoder->component,
OMX_EventPortSettingsChanged,
decoder->imageDecoder->outPort,
0, 0, 1);
if (ret == 0)
portSettingsChangedAgain(decoder);
}
// check to see if buffer is now empty
if (pBufHeader->nFilledLen == 0)
done = 1;
if ((done == 0)
|| (decoder->pOutputBufferHeader == NULL))
sleep(1);
}
// fill the buffer if we have created the buffer
if ((bFilled == 0) && (decoder->pOutputBufferHeader != NULL)) {
ret = OMX_FillThisBuffer(decoder->imageResizer->handle,
decoder->pOutputBufferHeader);
if (ret != OMX_ErrorNone) {
perror("Filling output buffer");
fprintf(stderr, "Error code %x\n", ret);
return OMXJPEG_ERROR_MEMORY;
}
bFilled = 1;
}
}
// wait for buffer to fill
/*
* while(pBufHeader->nFilledLen == 0) { sleep(5); }
*/
// wait for end of stream events
int ret =
ilclient_wait_for_event(decoder->imageDecoder->component,
OMX_EventBufferFlag,
decoder->imageDecoder->outPort, 1,
OMX_BUFFERFLAG_EOS, 1,
0, 2);
if (ret != 0) {
fprintf(stderr, "No EOS event on image decoder %d\n", ret);
}
ret = ilclient_wait_for_event(decoder->imageResizer->component,
OMX_EventBufferFlag,
decoder->imageResizer->outPort, 1,
OMX_BUFFERFLAG_EOS, 1, 0, 2);
if (ret != 0) {
fprintf(stderr, "No EOS event on image resizer %d\n", ret);
}
return OMXJPEG_OK;
}
