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Implement basic raw-to-tga conversion

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Ben Wiederhake 2015-11-16 09:12:18 +01:00
parent 2f467a2591
commit 98221ec036
2 changed files with 24 additions and 1 deletions
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24
tgp-2prpl.c
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@ -231,13 +231,35 @@ int p2tgl_imgstore_add_with_id (const char* filename) {
return id;
}
int p2tgl_imgstore_add_with_id_raw (const unsigned char *raw_rgba, unsigned width, unsigned height) {
/* Heavily inspired by: https://github.com/EionRobb/pidgin-opensteamworks/blob/master/libsteamworks.cpp#L113 */
const unsigned char tga_header[] = {
/* No ID; no color map; uncompressed true color */
0,0,2,
/* No color map metadata */
0,0,0,0,0,
/* No offsets */
0,0,0,0,
/* Dimensions */
width&0xFF,(width/256)&0xFF,height&0xFF,(height/256)&0xFF,
/* 32 bits per pixel */
32,
/* "Origin in upper left-hand corner" */
32};
// Will be owned by libpurple imgstore, which uses glib functions for managing memory
const unsigned tga_len = sizeof(tga_header) + width * height * 4;
unsigned char *tga = g_malloc(tga_len);
memcpy(tga, tga_header, sizeof(tga_header));
memcpy(tga + sizeof(tga_header), raw_rgba, width * height * 4);
return purple_imgstore_add_with_id (tga, tga_len, NULL);
}
#ifdef HAVE_LIBWEBP
static const int MAX_W = 256;
static const int MAX_H = 256;
int p2tgl_imgstore_add_with_id_webp (const char *filename) {
const uint8_t *data = NULL;
size_t len;
GError *err = NULL;

1
tgp-2prpl.h
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@ -46,6 +46,7 @@ PurpleNotifyUserInfo *p2tgl_notify_encrypted_chat_info_new (struct tgl_state *TL
int p2tgl_imgstore_add_with_id (const char* filename);
void p2tgl_buddy_icons_set_for_user (PurpleAccount *pa, tgl_peer_id_t id, const char* filename);
int p2tgl_imgstore_add_with_id_raw (const unsigned char *raw_rgba, unsigned width, unsigned height);
#ifdef HAVE_LIBWEBP
int p2tgl_imgstore_add_with_id_webp (const char *filename);
#endif