static int recv_screen (CalcHandle* handle, CalcScreenCoord* sc, uint8_t** bitmap)
{
int ret;
*bitmap = (uint8_t *)ticalcs_alloc_screen(65537U);
if (*bitmap == NULL)
{
return ERR_MALLOC;
}
if (handle->model == CALC_TI82)
{
sc->width = TI82_COLS;
sc->height = TI82_ROWS;
sc->clipped_width = TI82_COLS;
sc->clipped_height = TI82_ROWS;
}
else if (handle->model == CALC_TI83)
{
sc->width = TI83_COLS;
sc->height = TI83_ROWS;
sc->clipped_width = TI83_COLS;
sc->clipped_height = TI83_ROWS;
}
else if (handle->model == CALC_TI85)
{
sc->width = TI85_COLS;
sc->height = TI85_ROWS;
sc->clipped_width = TI85_COLS;
sc->clipped_height = TI85_ROWS;
}
else
{
sc->width = TI86_COLS;
sc->height = TI86_ROWS;
sc->clipped_width = TI86_COLS;
sc->clipped_height = TI86_ROWS;
}
sc->pixel_format = CALC_PIXFMT_MONO;
ret = SEND_SCR(handle);
if (!ret)
{
ret = RECV_ACK(handle, NULL);
if (!ret)
{
uint16_t max_cnt;
ret = RECV_XDP(handle, &max_cnt, *bitmap);
if (!ret || ret == ERR_CHECKSUM) // problem with checksum
{
*bitmap = ticalcs_realloc_screen(*bitmap, (handle->model < CALC_TI85) ? TI82_COLS * TI82_ROWS / 8 : TI85_COLS * TI85_ROWS / 8);
ret = SEND_ACK(handle);
}
}
}
if (ret)
{
ticalcs_free_screen(*bitmap);
*bitmap = NULL;
}
return ret;
}
static int recv_screen (CalcHandle* handle, CalcScreenCoord* sc, uint8_t** bitmap)
{
int ret;
uint8_t *buffer = handle->buffer2;
uint8_t *data = NULL;
data = (uint8_t *)ticalcs_alloc_screen(65537U);
if (data == NULL)
{
return ERR_MALLOC;
}
ret = SEND_SCR(handle);
if (!ret)
{
ret = RECV_ACK(handle, NULL);
if (!ret)
{
uint16_t pktsize;
ret = RECV_XDP(handle, &pktsize, data);
if (!ret || ret == ERR_CHECKSUM) // problem with checksum
{
ret = SEND_ACK(handle);
if (!ret)
{
if (pktsize == TI73_COLS * TI73_ROWS / 8)
{
/* TI-73 / 83+ / 84+ */
sc->width = TI73_COLS;
sc->height = TI73_ROWS;
sc->clipped_width = TI73_COLS;
sc->clipped_height = TI73_ROWS;
sc->pixel_format = CALC_PIXFMT_MONO;
*bitmap = ticalcs_realloc_screen(data, TI73_COLS * TI73_ROWS / 8);
}
else
{
/* TI-84+CSE */
uint32_t size = pktsize;
sc->width = TI84PC_COLS;
sc->height = TI84PC_ROWS;
sc->clipped_width = TI84PC_COLS;
sc->clipped_height = TI84PC_ROWS;
sc->pixel_format = CALC_PIXFMT_RGB_565_LE;
while (1)
{
ret = RECV_XDP(handle, &pktsize, buffer);
if (ret == ERR_EOT)
{
ret = SEND_ACK(handle);
break;
}
*bitmap = ticalcs_realloc_screen(data, size + pktsize);
if (*bitmap != NULL)
{
data = *bitmap;
memcpy(data + size, buffer, pktsize);
size += pktsize;
ret = SEND_ACK(handle);
if (ret)
{
break;
}
handle->updat->max1 = TI84PC_COLS * TI84PC_ROWS * 2;
handle->updat->cnt1 = size;
ticalcs_update_pbar(handle);
}
else
{
ticalcs_free_screen(data);
ret = ERR_MALLOC;
break;
}
}
if (!ret)
{
*bitmap = ticalcs_alloc_screen(TI84PC_ROWS * TI84PC_COLS * 2);
ret = ticalcs_screen_84pcse_rle_uncompress(data, size, *bitmap, TI84PC_ROWS * TI84PC_COLS * 2);
}
}
}
}
}
}
if (ret)
{
ticalcs_free_screen(*bitmap);
*bitmap = NULL;
}
return ret;
}
