48 #define FLI_256_COLOR 4
56 #define FLI_DTA_BRUN 25
57 #define FLI_DTA_COPY 26
60 #define FLI_TYPE_CODE (0xAF11)
61 #define FLC_FLX_TYPE_CODE (0xAF12)
62 #define FLC_DTA_TYPE_CODE (0xAF44)
63 #define FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE (0xAF13)
65 #define CHECK_PIXEL_PTR(n) \
66 if (pixel_ptr + n > pixel_limit) { \
67 av_log (s->avctx, AV_LOG_ERROR, "Invalid pixel_ptr = %d > pixel_limit = %d\n", \
68 pixel_ptr + n, pixel_limit); \
69 return AVERROR_INVALIDDATA; \
84 unsigned char *fli_header = (
unsigned char *)avctx->
extradata;
107 for (i = 0; i < 256; i++) {
154 void *
data,
int *got_frame,
162 unsigned char palette_idx1;
163 unsigned char palette_idx2;
168 unsigned int chunk_size;
176 unsigned char r,
g,
b;
179 int compressed_lines;
181 signed short line_packets;
187 unsigned int pixel_limit;
198 frame_size = bytestream2_get_le32(&g2);
199 if (frame_size > buf_size)
200 frame_size = buf_size;
202 num_chunks = bytestream2_get_le16(&g2);
208 while ((frame_size >= 6) && (num_chunks > 0) &&
210 int stream_ptr_after_chunk;
211 chunk_size = bytestream2_get_le32(&g2);
212 if (chunk_size > frame_size) {
214 "Invalid chunk_size = %u > frame_size = %u\n", chunk_size, frame_size);
219 chunk_type = bytestream2_get_le16(&g2);
221 switch (chunk_type) {
233 color_packets = bytestream2_get_le16(&g2);
235 for (i = 0; i < color_packets; i++) {
237 palette_ptr += bytestream2_get_byte(&g2);
240 color_changes = bytestream2_get_byte(&g2);
243 if (color_changes == 0)
249 for (j = 0; j < color_changes; j++) {
253 if ((
unsigned)palette_ptr >= 256)
256 r = bytestream2_get_byte(&g2) << color_shift;
257 g = bytestream2_get_byte(&g2) << color_shift;
258 b = bytestream2_get_byte(&g2) << color_shift;
259 entry = 0xFF
U << 24 | r << 16 | g << 8 |
b;
260 if (color_shift == 2)
261 entry |= entry >> 6 & 0x30303;
262 if (s->
palette[palette_ptr] != entry)
264 s->
palette[palette_ptr++] = entry;
271 compressed_lines = bytestream2_get_le16(&g2);
272 while (compressed_lines > 0) {
275 line_packets = bytestream2_get_le16(&g2);
276 if ((line_packets & 0xC000) == 0xC000) {
278 line_packets = -line_packets;
280 }
else if ((line_packets & 0xC000) == 0x4000) {
282 }
else if ((line_packets & 0xC000) == 0x8000) {
286 pixels[pixel_ptr] = line_packets & 0xff;
292 for (i = 0; i < line_packets; i++) {
296 pixel_skip = bytestream2_get_byte(&g2);
297 pixel_ptr += pixel_skip;
298 pixel_countdown -= pixel_skip;
299 byte_run =
sign_extend(bytestream2_get_byte(&g2), 8);
301 byte_run = -byte_run;
302 palette_idx1 = bytestream2_get_byte(&g2);
303 palette_idx2 = bytestream2_get_byte(&g2);
305 for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
306 pixels[pixel_ptr++] = palette_idx1;
307 pixels[pixel_ptr++] = palette_idx2;
313 for (j = 0; j < byte_run * 2; j++, pixel_countdown--) {
314 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
326 starting_line = bytestream2_get_le16(&g2);
330 compressed_lines = bytestream2_get_le16(&g2);
331 while (compressed_lines > 0) {
337 line_packets = bytestream2_get_byte(&g2);
338 if (line_packets > 0) {
339 for (i = 0; i < line_packets; i++) {
343 pixel_skip = bytestream2_get_byte(&g2);
344 pixel_ptr += pixel_skip;
345 pixel_countdown -= pixel_skip;
346 byte_run =
sign_extend(bytestream2_get_byte(&g2),8);
351 for (j = 0; j < byte_run; j++, pixel_countdown--) {
352 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
354 }
else if (byte_run < 0) {
355 byte_run = -byte_run;
356 palette_idx1 = bytestream2_get_byte(&g2);
358 for (j = 0; j < byte_run; j++, pixel_countdown--) {
359 pixels[pixel_ptr++] = palette_idx1;
380 for (lines = 0; lines < s->
avctx->
height; lines++) {
386 while (pixel_countdown > 0) {
389 byte_run =
sign_extend(bytestream2_get_byte(&g2), 8);
396 palette_idx1 = bytestream2_get_byte(&g2);
398 for (j = 0; j < byte_run; j++) {
399 pixels[pixel_ptr++] = palette_idx1;
401 if (pixel_countdown < 0)
403 pixel_countdown, lines);
406 byte_run = -byte_run;
410 for (j = 0; j < byte_run; j++) {
411 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
413 if (pixel_countdown < 0)
415 pixel_countdown, lines);
428 "has incorrect size, skipping chunk\n", chunk_size - 6);
451 frame_size -= chunk_size;
459 "and final chunk ptr = %d\n", buf_size,
478 void *
data,
int *got_frame,
487 unsigned char palette_idx1;
492 unsigned int chunk_size;
498 int compressed_lines;
499 signed short line_packets;
506 unsigned int pixel_limit;
516 frame_size = bytestream2_get_le32(&g2);
518 num_chunks = bytestream2_get_le16(&g2);
520 if (frame_size > buf_size)
521 frame_size = buf_size;
526 while ((frame_size > 0) && (num_chunks > 0) &&
528 int stream_ptr_after_chunk;
529 chunk_size = bytestream2_get_le32(&g2);
530 if (chunk_size > frame_size) {
532 "Invalid chunk_size = %u > frame_size = %u\n", chunk_size, frame_size);
537 chunk_type = bytestream2_get_le16(&g2);
540 switch (chunk_type) {
547 "Unexpected Palette chunk %d in non-palettized FLC\n",
555 compressed_lines = bytestream2_get_le16(&g2);
556 while (compressed_lines > 0) {
559 line_packets = bytestream2_get_le16(&g2);
560 if (line_packets < 0) {
561 line_packets = -line_packets;
568 for (i = 0; i < line_packets; i++) {
572 pixel_skip = bytestream2_get_byte(&g2);
573 pixel_ptr += (pixel_skip*2);
574 pixel_countdown -= pixel_skip;
575 byte_run =
sign_extend(bytestream2_get_byte(&g2), 8);
577 byte_run = -byte_run;
578 pixel = bytestream2_get_le16(&g2);
580 for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
581 *((
signed short*)(&pixels[pixel_ptr])) = pixel;
588 for (j = 0; j < byte_run; j++, pixel_countdown--) {
589 *((
signed short*)(&pixels[pixel_ptr])) = bytestream2_get_le16(&g2);
607 memset(pixels, 0x0000,
613 for (lines = 0; lines < s->
avctx->
height; lines++) {
620 while (pixel_countdown > 0) {
623 byte_run =
sign_extend(bytestream2_get_byte(&g2), 8);
625 palette_idx1 = bytestream2_get_byte(&g2);
627 for (j = 0; j < byte_run; j++) {
628 pixels[pixel_ptr++] = palette_idx1;
630 if (pixel_countdown < 0)
632 pixel_countdown, lines);
635 byte_run = -byte_run;
639 for (j = 0; j < byte_run; j++) {
640 palette_idx1 = bytestream2_get_byte(&g2);
641 pixels[pixel_ptr++] = palette_idx1;
643 if (pixel_countdown < 0)
645 pixel_countdown, lines);
658 while (pixel_countdown > 0) {
659 *((
signed short*)(&pixels[pixel_ptr])) =
AV_RL16(&buf[pixel_ptr]);
669 for (lines = 0; lines < s->
avctx->
height; lines++) {
676 while (pixel_countdown > 0) {
679 byte_run =
sign_extend(bytestream2_get_byte(&g2), 8);
681 pixel = bytestream2_get_le16(&g2);
683 for (j = 0; j < byte_run; j++) {
684 *((
signed short*)(&pixels[pixel_ptr])) = pixel;
687 if (pixel_countdown < 0)
692 byte_run = -byte_run;
696 for (j = 0; j < byte_run; j++) {
697 *((
signed short*)(&pixels[pixel_ptr])) = bytestream2_get_le16(&g2);
700 if (pixel_countdown < 0)
716 "bigger than image, skipping chunk\n", chunk_size - 6);
725 while (pixel_countdown > 0) {
726 *((
signed short*)(&pixels[y_ptr + pixel_ptr])) = bytestream2_get_le16(&g2);
744 frame_size -= chunk_size;
763 void *
data,
int *got_frame,
771 void *
data,
int *got_frame,
775 int buf_size = avpkt->
size;
794 av_log(avctx,
AV_LOG_ERROR,
"Unknown FLC format, my science cannot explain how this happened.\n");
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
#define AV_LOG_WARNING
Something somehow does not look correct.
#define CHECK_PIXEL_PTR(n)
static av_cold int init(AVCodecContext *avctx)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
static int flic_decode_frame_15_16BPP(AVCodecContext *avctx, void *data, int *got_frame, const uint8_t *buf, int buf_size)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
static int flic_decode_frame_8BPP(AVCodecContext *avctx, void *data, int *got_frame, const uint8_t *buf, int buf_size)
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
8 bit with AV_PIX_FMT_RGB32 palette
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int flic_decode_frame_24BPP(AVCodecContext *avctx, void *data, int *got_frame, const uint8_t *buf, int buf_size)
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
#define FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE
const char * name
Name of the codec implementation.
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
int width
picture width / height.
#define FLC_FLX_TYPE_CODE
packed RGB 8:8:8, 24bpp, BGRBGR...
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
static av_always_inline int bytestream2_tell(GetByteContext *g)
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
static int flic_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int flic_decode_end(AVCodecContext *avctx)
int palette_has_changed
Tell user application that palette has changed from previous frame.
static av_const int sign_extend(int val, unsigned bits)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
common internal api header.
#define AV_PIX_FMT_RGB555
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
unsigned int palette[256]
#define AV_PIX_FMT_RGB565
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
This structure stores compressed data.
static av_cold int flic_decode_init(AVCodecContext *avctx)
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.