86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/* *****************************************************************************
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* encode/addin.c -- encode an addin.
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* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libg1m.
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* libg1m is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3.0 of the License,
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* or (at your option) any later version.
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*
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* libg1m is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libg1m; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************** */
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#include <libg1m/internals.h>
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/**
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* g1m_announce_addin:
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* Announce an add-in's size.
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*
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* @arg handle the handle.
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* @arg size the size to feed.
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* @return the error code (0 if ok).
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*/
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int g1m_announce_addin(g1m_handle_t *handle, size_t *size)
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{
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*size += sizeof(struct standard_header) + sizeof(struct g1a_subheader);
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*size += handle->g1m_handle_size;
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return (0);
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}
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/**
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* g1m_encode_addin:
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* Encode an add-in.
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*
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* @arg handle the handle.
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* @arg buffer the buffer to which to write to.
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* @return the error code (0 if ok).
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*/
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int g1m_encode_addin(g1m_handle_t *handle, g1m_buffer_t *buffer)
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{
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size_t i; uint8_t *b;
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/* make the StandardHeader up */
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size_t filesize = 0; g1m_announce_addin(handle, &filesize);
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struct standard_header std = {
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.main_id = "USBPower",
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.subtype = "\xF3\x00\x10\x00\x10\x00",
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.filesize = htobe32((uint32_t)filesize),
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.control = (filesize + 0x41) & 0xFF,
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.control2 = (filesize + 0xB8) & 0xFF,
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.number = 0xFFFF};
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/* reverse it and output it */
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b = (void*)&std;
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for (i = 0; i < sizeof(struct standard_header); i++) b[i] = ~b[i];
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DWRITE(std)
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/* make the add-in subheader up and output it */
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filesize -= sizeof(struct standard_header);
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struct g1a_subheader sub = {
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.estrips_count = 0,
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.filesize = htobe32(filesize)};
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strncpy((char*)sub.title, handle->g1m_handle_title, 8);
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strncpy((char*)sub.internal_name, handle->g1m_handle_intname, 8);
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g1m_encode_version(&handle->g1m_handle_version, (char*)sub.version);
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g1m_encode_date(&handle->g1m_handle_creation_date,
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(char*)sub.creation_date);
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g1m_encode_picture((const uint32_t**)handle->g1m_handle_icon_unsel,
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g1m_pictureformat_1bit, sub.icon,
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G1A_ICON_WIDTH, G1A_ICON_HEIGHT);
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DWRITE(sub)
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/* output the content */
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WRITE(handle->g1m_handle_content, handle->g1m_handle_size)
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/* no error! */
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return (0);
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}
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