memfile_t *memfile_open_memory(u8 *data,u32 size)
{
memfile_t *ret;
ret = memfile_create();
ret->size = size;
ret->data = (u8*)mem_dup(data,size);
return(ret);
}
int movie_load(char *filename)
{
memfile_t *file;
u32 size;
u8 flags;
int devid[3];
char ident[5];
movie_unload();
if((file = memfile_open(filename,"rb")) == 0) {
log_printf("movie_load: error opening movie '%s'\n",filename);
return(1);
}
//need header and stuff here
memfile_read(ident,1,4,file);
if(memcmp(ident,movie_ident,4) != 0) {
log_printf("movie_load: bad movie ident\n");
memfile_close(file);
return(2);
}
//read movie flags
memfile_read(&flags,1,sizeof(u8),file);
if(flags & 1)
nes->movie.mode |= MOVIE_TEST;
//set required input devices
memfile_read(&devid[0],1,sizeof(int),file);
memfile_read(&devid[1],1,sizeof(int),file);
memfile_read(&devid[2],1,sizeof(int),file);
nes_set_inputdev(0,devid[0]);
nes_set_inputdev(1,devid[1]);
nes_set_inputdev(2,devid[2]);
//read movie data
memfile_read(&nes->movie.startframe,1,sizeof(u32),file);
memfile_read(&nes->movie.endframe,1,sizeof(u32),file);
memfile_read(&nes->movie.crc32,1,sizeof(u32),file);
memfile_read(&nes->movie.len,1,sizeof(u32),file);
log_printf("movie_load: start, end = %d, %d :: len = %d bytes\n",nes->movie.startframe,nes->movie.endframe,nes->movie.len);
nes->movie.data = (u8*)mem_alloc(nes->movie.len);
memfile_read(nes->movie.data,1,nes->movie.len,file);
size = memfile_size(file) - memfile_tell(file);
nes->movie.state = memfile_create();
memfile_copy(nes->movie.state,file,size);
memfile_close(file);
return(0);
}
memfile_t *memfile_open(char *filename,char *mode)
{
FILE *fp;
memfile_t *ret = 0;
int n;
//try to open the file
if((fp = fopen(filename,mode)) == 0) {
log_printf("memfile_open: error opening '%s'\n",filename);
return(0);
}
//create new file
ret = memfile_create();
//copy filename and mode
ret->filename = mem_strdup(filename);
ret->mode = mem_strdup(mode);
//save file handle
ret->handle = (void*)fp;
//get file size
fseek(fp,0,SEEK_END);
ret->size = (u32)ftell(fp);
fseek(fp,0,SEEK_SET);
//allocate file data and read the file into it
ret->data = (u8*)mem_alloc(ret->size);
if((n = fread(ret->data,1,ret->size,fp)) != ret->size) {
log_printf("memfile_open: error reading file, wanted %d bytes but read %d\n",ret->size,n);
memfile_close(ret);
return(0);
}
//if append mode, seek to end
if(strchr(mode,'a')) {
memfile_seek(ret,0,SEEK_END);
}
//initialize the current position and changed var
ret->curpos = 0;
ret->changed = 0;
return(ret);
}
//initialize movie data for recording
int movie_record()
{
//get rid of previous data
if(nes->movie.data)
movie_unload();
//initialize the movie struct
nes->movie.mode &= ~7;
nes->movie.mode |= MOVIE_RECORD;
nes->movie.pos = 0;
nes->movie.len = MOVIE_PREALLOC_SIZE;
nes->movie.data = (u8*)mem_alloc(nes->movie.len);
nes->movie.startframe = nes->ppu.frames;
//save state here for loading
nes->movie.state = memfile_create();
state_save(nes->movie.state);
return(0);
}
shm_buffer_t* shm_buffer_create(uint32_t width,
uint32_t height,
format_t fmt,
struct wl_shm *shm,
const struct wl_buffer_listener *listener)
{
int8_t bytes = format_get_bytes(&fmt);
uint32_t stride = SHM_BUFFER_STRIDE(width, bytes);
uint32_t size = stride * height;
shm_buffer_t *buffer = calloc(1, sizeof(shm_buffer_t));
int fd = memfile_create(size);
if (fd < 0)
return NULL;
buffer->data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (buffer->data == MAP_FAILED) {
close(fd);
return NULL;
}
buffer->shm_pool = wl_shm_create_pool(shm, fd, size);
buffer->buffer = wl_shm_pool_create_buffer(buffer->shm_pool,
0, width, height, stride,
fmt.wl_format);
wl_buffer_add_listener(buffer->buffer, listener, buffer);
buffer->fd = fd;
buffer->height = height;
buffer->stride = stride;
buffer->format = fmt;
buffer->bytes = bytes;
buffer->pool_size = size;
buffer->pending_height = 0;
buffer->pending_width = 0;
return buffer;
}