size_t os_fread_mbs(FILE *file, char **pstr)
{
size_t size = 0;
size_t len = 0;
fseek(file, 0, SEEK_END);
size = (size_t)os_ftelli64(file);
*pstr = NULL;
if (size > 0) {
char *mbstr = bmalloc(size+1);
fseek(file, 0, SEEK_SET);
size = fread(mbstr, 1, size, file);
if (size == 0) {
bfree(mbstr);
return 0;
}
mbstr[size] = 0;
len = os_mbs_to_utf8_ptr(mbstr, size, pstr);
bfree(mbstr);
}
return len;
}
int64_t os_fgetsize(FILE *file)
{
int64_t cur_offset = os_ftelli64(file);
int64_t size;
int errval = 0;
if (fseek(file, 0, SEEK_END) == -1)
return -1;
size = os_ftelli64(file);
if (size == -1)
errval = errno;
if (os_fseeki64(file, cur_offset, SEEK_SET) != 0 && errval != 0)
errno = errval;
return size;
}
static void flv_output_stop(void *data)
{
struct flv_output *stream = data;
if (stream->active) {
if (stream->file)
write_file_info(stream->file, stream->last_packet_ts,
os_ftelli64(stream->file));
fclose(stream->file);
obs_output_end_data_capture(stream->output);
stream->active = false;
stream->sent_headers = false;
info("FLV file output complete");
}
}
size_t os_fread_utf8(FILE *file, char **pstr)
{
size_t size = 0;
size_t len = 0;
*pstr = NULL;
fseek(file, 0, SEEK_END);
size = (size_t)os_ftelli64(file);
if (size > 0) {
char bom[3];
char *utf8str;
off_t offset;
bom[0] = 0;
bom[1] = 0;
bom[2] = 0;
/* remove the ghastly BOM if present */
fseek(file, 0, SEEK_SET);
fread(bom, 1, 3, file);
offset = (astrcmp_n(bom, "\xEF\xBB\xBF", 3) == 0) ? 3 : 0;
size -= offset;
if (size == 0)
return 0;
utf8str = bmalloc(size+1);
fseek(file, offset, SEEK_SET);
size = fread(utf8str, 1, size, file);
if (size == 0) {
bfree(utf8str);
return 0;
}
utf8str[size] = 0;
*pstr = utf8str;
}
return len;
}
static bool init_animated_gif(gs_image_file_t *image, const char *path)
{
bool is_animated_gif = true;
gif_result result;
uint64_t max_size;
size_t size;
FILE *file;
image->bitmap_callbacks.bitmap_create = bi_def_bitmap_create;
image->bitmap_callbacks.bitmap_destroy = bi_def_bitmap_destroy;
image->bitmap_callbacks.bitmap_get_buffer = bi_def_bitmap_get_buffer;
image->bitmap_callbacks.bitmap_modified = bi_def_bitmap_modified;
image->bitmap_callbacks.bitmap_set_opaque = bi_def_bitmap_set_opaque;
image->bitmap_callbacks.bitmap_test_opaque = bi_def_bitmap_test_opaque;
gif_create(&image->gif, &image->bitmap_callbacks);
file = os_fopen(path, "rb");
if (!file) {
blog(LOG_WARNING, "Failed to open file '%s'", path);
goto fail;
}
fseek(file, 0, SEEK_END);
size = (size_t)os_ftelli64(file);
fseek(file, 0, SEEK_SET);
image->gif_data = bmalloc(size);
fread(image->gif_data, 1, size, file);
do {
result = gif_initialise(&image->gif, size, image->gif_data);
if (result < 0) {
blog(LOG_WARNING, "Failed to initialize gif '%s', "
"possible file corruption", path);
goto fail;
}
} while (result != GIF_OK);
if (image->gif.width > 4096 || image->gif.height > 4096) {
blog(LOG_WARNING, "Bad texture dimensions (%dx%d) in '%s'",
image->gif.width, image->gif.height, path);
goto fail;
}
max_size = (uint64_t)image->gif.width * (uint64_t)image->gif.height *
(uint64_t)image->gif.frame_count * 4LLU;
if ((uint64_t)get_full_decoded_gif_size(image) != max_size) {
blog(LOG_WARNING, "Gif '%s' overflowed maximum pointer size",
path);
goto fail;
}
image->is_animated_gif = (image->gif.frame_count > 1 && result >= 0);
if (image->is_animated_gif) {
gif_decode_frame(&image->gif, 0);
image->animation_frame_cache = bzalloc(
image->gif.frame_count * sizeof(uint8_t*));
image->animation_frame_data = bzalloc(
get_full_decoded_gif_size(image));
for (unsigned int i = 0; i < image->gif.frame_count; i++) {
if (gif_decode_frame(&image->gif, i) != GIF_OK)
blog(LOG_WARNING, "Couldn't decode frame %u "
"of '%s'", i, path);
}
gif_decode_frame(&image->gif, 0);
image->cx = (uint32_t)image->gif.width;
image->cy = (uint32_t)image->gif.height;
image->format = GS_RGBA;
} else {
gif_finalise(&image->gif);
bfree(image->gif_data);
image->gif_data = NULL;
is_animated_gif = false;
goto not_animated;
}
image->loaded = true;
fail:
if (!image->loaded)
gs_image_file_free(image);
not_animated:
if (file)
fclose(file);
return is_animated_gif;
}
