Function ReadCallback

src/dolphin/src/card/CARDRead.c:56–102

}

static void ReadCallback(s32 chan, s32 result) {
  CARDControl* card;
  CARDCallback callback;
  u16* fat;
  CARDFileInfo* fileInfo;
  s32 length;

  card = &__CARDBlock[chan];
  if (result < 0) {
    goto error;
  }

  fileInfo = card->fileInfo;
  if (fileInfo->length < 0) {
    result = CARD_RESULT_CANCELED;
    goto error;
  }

  length = (s32)TRUNC(fileInfo->offset + card->sectorSize, card->sectorSize) - fileInfo->offset;
  fileInfo->length -= length;
  if (fileInfo->length <= 0) {
    goto error;
  }

  fat = __CARDGetFatBlock(card);
  fileInfo->offset += length;
  fileInfo->iBlock = fat[fileInfo->iBlock];
  if (!CARDIsValidBlockNo(card, fileInfo->iBlock)) {
    result = CARD_RESULT_BROKEN;
    goto error;
  }

  result = __CARDRead(chan, card->sectorSize * (u32)fileInfo->iBlock,
                      (fileInfo->length < card->sectorSize) ? fileInfo->length : card->sectorSize,
                      card->buffer, ReadCallback);
  if (result < 0) {
    goto error;
  }

  return;

error:
  callback = card->apiCallback;
  card->apiCallback = 0;
  __CARDPutControlBlock(card, result);
  callback(chan, result);
}

s32 CARDReadAsync(CARDFileInfo* fileInfo, void* buf, s32 length, s32 offset,
                  CARDCallback callback) {