2 * FLI/FLC Animation Video Decoder
3 * Copyright (C) 2003, 2004 the ffmpeg project
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * Autodesk Animator FLI/FLC Video Decoder
25 * by Mike Melanson (melanson@pcisys.net)
26 * for more information on the .fli/.flc file format and all of its many
28 * http://www.compuphase.com/flic.htm
30 * This decoder outputs PAL8/RGB555/RGB565 and maybe one day RGB24
31 * colorspace data, depending on the FLC. To use this decoder, be
32 * sure that your demuxer sends the FLI file header to the decoder via
33 * the extradata chunk in AVCodecContext. The chunk should be 128 bytes
34 * large. The only exception is for FLI files from the game "Magic Carpet",
35 * in which the header is only 12 bytes.
42 #include "libavutil/intreadwrite.h"
44 #include "bytestream.h"
47 #define FLI_256_COLOR 4
55 #define FLI_DTA_BRUN 25
56 #define FLI_DTA_COPY 26
59 #define FLI_TYPE_CODE (0xAF11)
60 #define FLC_FLX_TYPE_CODE (0xAF12)
61 #define FLC_DTA_TYPE_CODE (0xAF44) /* Marks an "Extended FLC" comes from Dave's Targa Animator (DTA) */
62 #define FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE (0xAF13)
64 #define CHECK_PIXEL_PTR(n) \
65 if (pixel_ptr + n > pixel_limit) { \
66 av_log (s->avctx, AV_LOG_ERROR, "Invalid pixel_ptr = %d > pixel_limit = %d\n", \
67 pixel_ptr + n, pixel_limit); \
68 return AVERROR_INVALIDDATA; \
71 typedef struct FlicDecodeContext {
72 AVCodecContext *avctx;
75 unsigned int palette[256];
77 int fli_type; /* either 0xAF11 or 0xAF12, affects palette resolution */
80 static av_cold int flic_decode_init(AVCodecContext *avctx)
82 FlicDecodeContext *s = avctx->priv_data;
83 unsigned char *fli_header = (unsigned char *)avctx->extradata;
86 if (avctx->extradata_size != 0 &&
87 avctx->extradata_size != 12 &&
88 avctx->extradata_size != 128 &&
89 avctx->extradata_size != 256 &&
90 avctx->extradata_size != 904 &&
91 avctx->extradata_size != 1024) {
92 av_log(avctx, AV_LOG_ERROR, "Unexpected extradata size %d\n", avctx->extradata_size);
93 return AVERROR_INVALIDDATA;
98 if (s->avctx->extradata_size == 12) {
99 /* special case for magic carpet FLIs */
100 s->fli_type = FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE;
102 } else if (avctx->extradata_size == 1024) {
103 uint8_t *ptr = avctx->extradata;
106 for (i = 0; i < 256; i++) {
107 s->palette[i] = AV_RL32(ptr);
111 /* FLI in MOV, see e.g. FFmpeg trac issue #626 */
112 } else if (avctx->extradata_size == 0 ||
113 avctx->extradata_size == 256 ||
114 /* see FFmpeg ticket #1234 */
115 avctx->extradata_size == 904) {
116 s->fli_type = FLI_TYPE_CODE;
119 s->fli_type = AV_RL16(&fli_header[4]);
120 depth = AV_RL16(&fli_header[12]);
124 depth = 8; /* Some FLC generators set depth to zero, when they mean 8Bpp. Fix up here */
127 if ((s->fli_type == FLC_FLX_TYPE_CODE) && (depth == 16)) {
128 depth = 15; /* Original Autodesk FLX's say the depth is 16Bpp when it is really 15Bpp */
132 case 8 : avctx->pix_fmt = AV_PIX_FMT_PAL8; break;
133 case 15 : avctx->pix_fmt = AV_PIX_FMT_RGB555; break;
134 case 16 : avctx->pix_fmt = AV_PIX_FMT_RGB565; break;
135 case 24 : avctx->pix_fmt = AV_PIX_FMT_BGR24; /* Supposedly BGR, but havent any files to test with */
136 av_log(avctx, AV_LOG_ERROR, "24Bpp FLC/FLX is unsupported due to no test files.\n");
137 return AVERROR_PATCHWELCOME;
139 av_log(avctx, AV_LOG_ERROR, "Unknown FLC/FLX depth of %d Bpp is unsupported.\n",depth);
140 return AVERROR_INVALIDDATA;
143 avcodec_get_frame_defaults(&s->frame);
144 s->frame.data[0] = NULL;
150 static int flic_decode_frame_8BPP(AVCodecContext *avctx,
151 void *data, int *data_size,
152 const uint8_t *buf, int buf_size)
154 FlicDecodeContext *s = avctx->priv_data;
159 unsigned char palette_idx1;
160 unsigned char palette_idx2;
162 unsigned int frame_size;
165 unsigned int chunk_size;
173 unsigned char r, g, b;
176 int compressed_lines;
178 signed short line_packets;
183 unsigned char *pixels;
184 unsigned int pixel_limit;
186 bytestream2_init(&g2, buf, buf_size);
188 s->frame.reference = 3;
189 s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
190 if ((ret = avctx->reget_buffer(avctx, &s->frame)) < 0) {
191 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
195 pixels = s->frame.data[0];
196 pixel_limit = s->avctx->height * s->frame.linesize[0];
197 if (buf_size < 16 || buf_size > INT_MAX - (3 * 256 + FF_INPUT_BUFFER_PADDING_SIZE))
198 return AVERROR_INVALIDDATA;
199 frame_size = bytestream2_get_le32(&g2);
200 if (frame_size > buf_size)
201 frame_size = buf_size;
202 bytestream2_skip(&g2, 2); /* skip the magic number */
203 num_chunks = bytestream2_get_le16(&g2);
204 bytestream2_skip(&g2, 8); /* skip padding */
208 /* iterate through the chunks */
209 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) {
213 av_log(avctx, AV_LOG_WARNING,
214 "Invalid chunk_size = %u > frame_size = %u\n", chunk_size, frame_size);
215 chunk_size = frame_size;
217 stream_ptr_after_chunk = bytestream2_tell(&g2) - 4 + chunk_size;
219 chunk_type = bytestream2_get_le16(&g2);
221 switch (chunk_type) {
224 /* check special case: If this file is from the Magic Carpet
225 * game and uses 6-bit colors even though it reports 256-color
226 * chunks in a 0xAF12-type file (fli_type is set to 0xAF13 during
228 if ((chunk_type == FLI_256_COLOR) && (s->fli_type != FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE))
232 /* set up the palette */
233 color_packets = bytestream2_get_le16(&g2);
235 for (i = 0; i < color_packets; i++) {
236 /* first byte is how many colors to skip */
237 palette_ptr += bytestream2_get_byte(&g2);
239 /* next byte indicates how many entries to change */
240 color_changes = bytestream2_get_byte(&g2);
242 /* if there are 0 color changes, there are actually 256 */
243 if (color_changes == 0)
246 if (bytestream2_tell(&g2) + color_changes * 3 > stream_ptr_after_chunk)
249 for (j = 0; j < color_changes; j++) {
252 /* wrap around, for good measure */
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 = 0xFFU << 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) {
273 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
275 line_packets = bytestream2_get_le16(&g2);
276 if ((line_packets & 0xC000) == 0xC000) {
278 line_packets = -line_packets;
279 y_ptr += line_packets * s->frame.linesize[0];
280 } else if ((line_packets & 0xC000) == 0x4000) {
281 av_log(avctx, AV_LOG_ERROR, "Undefined opcode (%x) in DELTA_FLI\n", line_packets);
282 } else if ((line_packets & 0xC000) == 0x8000) {
283 // "last byte" opcode
284 pixel_ptr= y_ptr + s->frame.linesize[0] - 1;
286 pixels[pixel_ptr] = line_packets & 0xff;
291 pixel_countdown = s->avctx->width;
292 for (i = 0; i < line_packets; i++) {
293 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
295 /* account for the skip bytes */
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);
304 CHECK_PIXEL_PTR(byte_run * 2);
305 for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
306 pixels[pixel_ptr++] = palette_idx1;
307 pixels[pixel_ptr++] = palette_idx2;
310 CHECK_PIXEL_PTR(byte_run * 2);
311 if (bytestream2_tell(&g2) + byte_run * 2 > stream_ptr_after_chunk)
313 for (j = 0; j < byte_run * 2; j++, pixel_countdown--) {
314 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
319 y_ptr += s->frame.linesize[0];
325 /* line compressed */
326 starting_line = bytestream2_get_le16(&g2);
328 y_ptr += starting_line * s->frame.linesize[0];
330 compressed_lines = bytestream2_get_le16(&g2);
331 while (compressed_lines > 0) {
334 pixel_countdown = s->avctx->width;
335 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
337 line_packets = bytestream2_get_byte(&g2);
338 if (line_packets > 0) {
339 for (i = 0; i < line_packets; i++) {
340 /* account for the skip bytes */
341 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
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);
348 CHECK_PIXEL_PTR(byte_run);
349 if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
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);
357 CHECK_PIXEL_PTR(byte_run);
358 for (j = 0; j < byte_run; j++, pixel_countdown--) {
359 pixels[pixel_ptr++] = palette_idx1;
365 y_ptr += s->frame.linesize[0];
371 /* set the whole frame to color 0 (which is usually black) */
373 s->frame.linesize[0] * s->avctx->height);
377 /* Byte run compression: This chunk type only occurs in the first
378 * FLI frame and it will update the entire frame. */
380 for (lines = 0; lines < s->avctx->height; lines++) {
382 /* disregard the line packets; instead, iterate through all
384 bytestream2_skip(&g2, 1);
385 pixel_countdown = s->avctx->width;
386 while (pixel_countdown > 0) {
387 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
389 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
391 palette_idx1 = bytestream2_get_byte(&g2);
392 CHECK_PIXEL_PTR(byte_run);
393 for (j = 0; j < byte_run; j++) {
394 pixels[pixel_ptr++] = palette_idx1;
396 if (pixel_countdown < 0)
397 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
398 pixel_countdown, lines);
400 } else { /* copy bytes if byte_run < 0 */
401 byte_run = -byte_run;
402 CHECK_PIXEL_PTR(byte_run);
403 if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
405 for (j = 0; j < byte_run; j++) {
406 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
408 if (pixel_countdown < 0)
409 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
410 pixel_countdown, lines);
415 y_ptr += s->frame.linesize[0];
420 /* copy the chunk (uncompressed frame) */
421 if (chunk_size - 6 != s->avctx->width * s->avctx->height) {
422 av_log(avctx, AV_LOG_ERROR, "In chunk FLI_COPY : source data (%d bytes) " \
423 "has incorrect size, skipping chunk\n", chunk_size - 6);
424 bytestream2_skip(&g2, chunk_size - 6);
426 for (y_ptr = 0; y_ptr < s->frame.linesize[0] * s->avctx->height;
427 y_ptr += s->frame.linesize[0]) {
428 bytestream2_get_buffer(&g2, &pixels[y_ptr],
435 /* some sort of a thumbnail? disregard this chunk... */
439 av_log(avctx, AV_LOG_ERROR, "Unrecognized chunk type: %d\n", chunk_type);
443 if (stream_ptr_after_chunk - bytestream2_tell(&g2) > 0)
444 bytestream2_skip(&g2, stream_ptr_after_chunk - bytestream2_tell(&g2));
446 frame_size -= chunk_size;
450 /* by the end of the chunk, the stream ptr should equal the frame
451 * size (minus 1 or 2, possibly); if it doesn't, issue a warning */
452 if (bytestream2_get_bytes_left(&g2) > 2)
453 av_log(avctx, AV_LOG_ERROR, "Processed FLI chunk where chunk size = %d " \
454 "and final chunk ptr = %d\n", buf_size,
455 buf_size - bytestream2_get_bytes_left(&g2));
457 /* make the palette available on the way out */
458 memcpy(s->frame.data[1], s->palette, AVPALETTE_SIZE);
459 if (s->new_palette) {
460 s->frame.palette_has_changed = 1;
464 *data_size=sizeof(AVFrame);
465 *(AVFrame*)data = s->frame;
470 static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
471 void *data, int *data_size,
472 const uint8_t *buf, int buf_size)
474 /* Note, the only difference between the 15Bpp and 16Bpp */
475 /* Format is the pixel format, the packets are processed the same. */
476 FlicDecodeContext *s = avctx->priv_data;
480 unsigned char palette_idx1;
482 unsigned int frame_size;
485 unsigned int chunk_size;
491 int compressed_lines;
492 signed short line_packets;
497 unsigned char *pixels;
499 unsigned int pixel_limit;
501 bytestream2_init(&g2, buf, buf_size);
503 s->frame.reference = 3;
504 s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
505 if ((ret = avctx->reget_buffer(avctx, &s->frame)) < 0) {
506 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
510 pixels = s->frame.data[0];
511 pixel_limit = s->avctx->height * s->frame.linesize[0];
513 frame_size = bytestream2_get_le32(&g2);
514 bytestream2_skip(&g2, 2); /* skip the magic number */
515 num_chunks = bytestream2_get_le16(&g2);
516 bytestream2_skip(&g2, 8); /* skip padding */
517 if (frame_size > buf_size)
518 frame_size = buf_size;
522 /* iterate through the chunks */
523 while ((frame_size > 0) && (num_chunks > 0)) {
524 int stream_ptr_after_chunk;
525 chunk_size = bytestream2_get_le32(&g2);
526 if (chunk_size > frame_size) {
527 av_log(avctx, AV_LOG_WARNING,
528 "Invalid chunk_size = %u > frame_size = %u\n", chunk_size, frame_size);
529 chunk_size = frame_size;
531 stream_ptr_after_chunk = bytestream2_tell(&g2) - 4 + chunk_size;
533 chunk_type = bytestream2_get_le16(&g2);
536 switch (chunk_type) {
539 /* For some reason, it seems that non-palettized flics do
540 * include one of these chunks in their first frame.
541 * Why I do not know, it seems rather extraneous. */
543 "Unexpected Palette chunk %d in non-palettized FLC\n",
545 bytestream2_skip(&g2, chunk_size - 6);
551 compressed_lines = bytestream2_get_le16(&g2);
552 while (compressed_lines > 0) {
553 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
555 line_packets = bytestream2_get_le16(&g2);
556 if (line_packets < 0) {
557 line_packets = -line_packets;
558 y_ptr += line_packets * s->frame.linesize[0];
563 pixel_countdown = s->avctx->width;
564 for (i = 0; i < line_packets; i++) {
565 /* account for the skip bytes */
566 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
568 pixel_skip = bytestream2_get_byte(&g2);
569 pixel_ptr += (pixel_skip*2); /* Pixel is 2 bytes wide */
570 pixel_countdown -= pixel_skip;
571 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
573 byte_run = -byte_run;
574 pixel = bytestream2_get_le16(&g2);
575 CHECK_PIXEL_PTR(2 * byte_run);
576 for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
577 *((signed short*)(&pixels[pixel_ptr])) = pixel;
581 if (bytestream2_tell(&g2) + 2*byte_run > stream_ptr_after_chunk)
583 CHECK_PIXEL_PTR(2 * byte_run);
584 for (j = 0; j < byte_run; j++, pixel_countdown--) {
585 *((signed short*)(&pixels[pixel_ptr])) = bytestream2_get_le16(&g2);
591 y_ptr += s->frame.linesize[0];
597 av_log(avctx, AV_LOG_ERROR, "Unexpected FLI_LC chunk in non-paletised FLC\n");
598 bytestream2_skip(&g2, chunk_size - 6);
602 /* set the whole frame to 0x0000 which is black in both 15Bpp and 16Bpp modes. */
603 memset(pixels, 0x0000,
604 s->frame.linesize[0] * s->avctx->height);
609 for (lines = 0; lines < s->avctx->height; lines++) {
611 /* disregard the line packets; instead, iterate through all
613 bytestream2_skip(&g2, 1);
614 pixel_countdown = (s->avctx->width * 2);
616 while (pixel_countdown > 0) {
617 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
619 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
621 palette_idx1 = bytestream2_get_byte(&g2);
622 CHECK_PIXEL_PTR(byte_run);
623 for (j = 0; j < byte_run; j++) {
624 pixels[pixel_ptr++] = palette_idx1;
626 if (pixel_countdown < 0)
627 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) (linea%d)\n",
628 pixel_countdown, lines);
630 } else { /* copy bytes if byte_run < 0 */
631 byte_run = -byte_run;
632 if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
634 CHECK_PIXEL_PTR(byte_run);
635 for (j = 0; j < byte_run; j++) {
636 palette_idx1 = bytestream2_get_byte(&g2);
637 pixels[pixel_ptr++] = palette_idx1;
639 if (pixel_countdown < 0)
640 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
641 pixel_countdown, lines);
646 /* Now FLX is strange, in that it is "byte" as opposed to "pixel" run length compressed.
647 * This does not give us any good oportunity to perform word endian conversion
648 * during decompression. So if it is required (i.e., this is not a LE target, we do
649 * a second pass over the line here, swapping the bytes.
653 pixel_countdown = s->avctx->width;
654 while (pixel_countdown > 0) {
655 *((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[pixel_ptr]);
659 y_ptr += s->frame.linesize[0];
665 for (lines = 0; lines < s->avctx->height; lines++) {
667 /* disregard the line packets; instead, iterate through all
669 bytestream2_skip(&g2, 1);
670 pixel_countdown = s->avctx->width; /* Width is in pixels, not bytes */
672 while (pixel_countdown > 0) {
673 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
675 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
677 pixel = bytestream2_get_le16(&g2);
678 CHECK_PIXEL_PTR(2 * byte_run);
679 for (j = 0; j < byte_run; j++) {
680 *((signed short*)(&pixels[pixel_ptr])) = pixel;
683 if (pixel_countdown < 0)
684 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
687 } else { /* copy pixels if byte_run < 0 */
688 byte_run = -byte_run;
689 if (bytestream2_tell(&g2) + 2 * byte_run > stream_ptr_after_chunk)
691 CHECK_PIXEL_PTR(2 * byte_run);
692 for (j = 0; j < byte_run; j++) {
693 *((signed short*)(&pixels[pixel_ptr])) = bytestream2_get_le16(&g2);
696 if (pixel_countdown < 0)
697 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
703 y_ptr += s->frame.linesize[0];
709 /* copy the chunk (uncompressed frame) */
710 if (chunk_size - 6 > (unsigned int)(s->avctx->width * s->avctx->height)*2) {
711 av_log(avctx, AV_LOG_ERROR, "In chunk FLI_COPY : source data (%d bytes) " \
712 "bigger than image, skipping chunk\n", chunk_size - 6);
713 bytestream2_skip(&g2, chunk_size - 6);
716 for (y_ptr = 0; y_ptr < s->frame.linesize[0] * s->avctx->height;
717 y_ptr += s->frame.linesize[0]) {
719 pixel_countdown = s->avctx->width;
721 while (pixel_countdown > 0) {
722 *((signed short*)(&pixels[y_ptr + pixel_ptr])) = bytestream2_get_le16(&g2);
731 /* some sort of a thumbnail? disregard this chunk... */
732 bytestream2_skip(&g2, chunk_size - 6);
736 av_log(avctx, AV_LOG_ERROR, "Unrecognized chunk type: %d\n", chunk_type);
740 frame_size -= chunk_size;
744 /* by the end of the chunk, the stream ptr should equal the frame
745 * size (minus 1, possibly); if it doesn't, issue a warning */
746 if ((bytestream2_get_bytes_left(&g2) != 0) && (bytestream2_get_bytes_left(&g2) != 1))
747 av_log(avctx, AV_LOG_ERROR, "Processed FLI chunk where chunk size = %d " \
748 "and final chunk ptr = %d\n", buf_size, bytestream2_tell(&g2));
751 *data_size=sizeof(AVFrame);
752 *(AVFrame*)data = s->frame;
757 static int flic_decode_frame_24BPP(AVCodecContext *avctx,
758 void *data, int *data_size,
759 const uint8_t *buf, int buf_size)
761 av_log(avctx, AV_LOG_ERROR, "24Bpp FLC Unsupported due to lack of test files.\n");
762 return AVERROR_PATCHWELCOME;
765 static int flic_decode_frame(AVCodecContext *avctx,
766 void *data, int *data_size,
769 const uint8_t *buf = avpkt->data;
770 int buf_size = avpkt->size;
771 if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
772 return flic_decode_frame_8BPP(avctx, data, data_size,
775 else if ((avctx->pix_fmt == AV_PIX_FMT_RGB555) ||
776 (avctx->pix_fmt == AV_PIX_FMT_RGB565)) {
777 return flic_decode_frame_15_16BPP(avctx, data, data_size,
780 else if (avctx->pix_fmt == AV_PIX_FMT_BGR24) {
781 return flic_decode_frame_24BPP(avctx, data, data_size,
785 /* Should not get here, ever as the pix_fmt is processed */
786 /* in flic_decode_init and the above if should deal with */
787 /* the finite set of possibilites allowable by here. */
788 /* But in case we do, just error out. */
789 av_log(avctx, AV_LOG_ERROR, "Unknown FLC format, my science cannot explain how this happened.\n");
790 return AVERROR_INVALIDDATA;
794 static av_cold int flic_decode_end(AVCodecContext *avctx)
796 FlicDecodeContext *s = avctx->priv_data;
798 if (s->frame.data[0])
799 avctx->release_buffer(avctx, &s->frame);
804 AVCodec ff_flic_decoder = {
806 .type = AVMEDIA_TYPE_VIDEO,
807 .id = AV_CODEC_ID_FLIC,
808 .priv_data_size = sizeof(FlicDecodeContext),
809 .init = flic_decode_init,
810 .close = flic_decode_end,
811 .decode = flic_decode_frame,
812 .capabilities = CODEC_CAP_DR1,
813 .long_name = NULL_IF_CONFIG_SMALL("Autodesk Animator Flic video"),