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 != 904 &&
90 avctx->extradata_size != 1024) {
91 av_log(avctx, AV_LOG_ERROR, "Unexpected extradata size %d\n", avctx->extradata_size);
92 return AVERROR_INVALIDDATA;
97 if (s->avctx->extradata_size == 12) {
98 /* special case for magic carpet FLIs */
99 s->fli_type = FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE;
101 } else if (avctx->extradata_size == 1024) {
102 uint8_t *ptr = avctx->extradata;
105 for (i = 0; i < 256; i++) {
106 s->palette[i] = AV_RL32(ptr);
110 /* FLI in MOV, see e.g. FFmpeg trac issue #626 */
111 } else if (avctx->extradata_size == 0 ||
112 /* see FFmpeg ticket #1234 */
113 avctx->extradata_size == 904) {
114 s->fli_type = FLI_TYPE_CODE;
117 s->fli_type = AV_RL16(&fli_header[4]);
118 depth = AV_RL16(&fli_header[12]);
122 depth = 8; /* Some FLC generators set depth to zero, when they mean 8Bpp. Fix up here */
125 if ((s->fli_type == FLC_FLX_TYPE_CODE) && (depth == 16)) {
126 depth = 15; /* Original Autodesk FLX's say the depth is 16Bpp when it is really 15Bpp */
130 case 8 : avctx->pix_fmt = PIX_FMT_PAL8; break;
131 case 15 : avctx->pix_fmt = PIX_FMT_RGB555; break;
132 case 16 : avctx->pix_fmt = PIX_FMT_RGB565; break;
133 case 24 : avctx->pix_fmt = PIX_FMT_BGR24; /* Supposedly BGR, but havent any files to test with */
134 av_log(avctx, AV_LOG_ERROR, "24Bpp FLC/FLX is unsupported due to no test files.\n");
137 av_log(avctx, AV_LOG_ERROR, "Unknown FLC/FLX depth of %d Bpp is unsupported.\n",depth);
141 avcodec_get_frame_defaults(&s->frame);
142 s->frame.data[0] = NULL;
148 static int flic_decode_frame_8BPP(AVCodecContext *avctx,
149 void *data, int *data_size,
150 const uint8_t *buf, int buf_size)
152 FlicDecodeContext *s = avctx->priv_data;
157 unsigned char palette_idx1;
158 unsigned char palette_idx2;
160 unsigned int frame_size;
163 unsigned int chunk_size;
171 unsigned char r, g, b;
174 int compressed_lines;
176 signed short line_packets;
181 unsigned char *pixels;
182 unsigned int pixel_limit;
184 bytestream2_init(&g2, buf, buf_size);
186 s->frame.reference = 3;
187 s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
188 if (avctx->reget_buffer(avctx, &s->frame) < 0) {
189 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
193 pixels = s->frame.data[0];
194 pixel_limit = s->avctx->height * s->frame.linesize[0];
195 if (buf_size < 16 || buf_size > INT_MAX - (3 * 256 + FF_INPUT_BUFFER_PADDING_SIZE))
196 return AVERROR_INVALIDDATA;
197 frame_size = bytestream2_get_le32(&g2);
198 if (frame_size > buf_size)
199 frame_size = buf_size;
200 bytestream2_skip(&g2, 2); /* skip the magic number */
201 num_chunks = bytestream2_get_le16(&g2);
202 bytestream2_skip(&g2, 8); /* skip padding */
206 /* iterate through the chunks */
207 while ((frame_size >= 6) && (num_chunks > 0)) {
208 int stream_ptr_after_chunk;
209 chunk_size = bytestream2_get_le32(&g2);
210 if (chunk_size > frame_size) {
211 av_log(avctx, AV_LOG_WARNING,
212 "Invalid chunk_size = %u > frame_size = %u\n", chunk_size, frame_size);
213 chunk_size = frame_size;
215 stream_ptr_after_chunk = bytestream2_tell(&g2) - 4 + chunk_size;
217 chunk_type = bytestream2_get_le16(&g2);
219 switch (chunk_type) {
222 /* check special case: If this file is from the Magic Carpet
223 * game and uses 6-bit colors even though it reports 256-color
224 * chunks in a 0xAF12-type file (fli_type is set to 0xAF13 during
226 if ((chunk_type == FLI_256_COLOR) && (s->fli_type != FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE))
230 /* set up the palette */
231 color_packets = bytestream2_get_le16(&g2);
233 for (i = 0; i < color_packets; i++) {
234 /* first byte is how many colors to skip */
235 palette_ptr += bytestream2_get_byte(&g2);
237 /* next byte indicates how many entries to change */
238 color_changes = bytestream2_get_byte(&g2);
240 /* if there are 0 color changes, there are actually 256 */
241 if (color_changes == 0)
244 if (bytestream2_tell(&g2) + color_changes * 3 > stream_ptr_after_chunk)
247 for (j = 0; j < color_changes; j++) {
250 /* wrap around, for good measure */
251 if ((unsigned)palette_ptr >= 256)
254 r = bytestream2_get_byte(&g2) << color_shift;
255 g = bytestream2_get_byte(&g2) << color_shift;
256 b = bytestream2_get_byte(&g2) << color_shift;
257 entry = 0xFF << 24 | r << 16 | g << 8 | b;
258 if (color_shift == 2)
259 entry |= entry >> 6 & 0x30303;
260 if (s->palette[palette_ptr] != entry)
262 s->palette[palette_ptr++] = entry;
269 compressed_lines = bytestream2_get_le16(&g2);
270 while (compressed_lines > 0) {
271 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
273 line_packets = bytestream2_get_le16(&g2);
274 if ((line_packets & 0xC000) == 0xC000) {
276 line_packets = -line_packets;
277 y_ptr += line_packets * s->frame.linesize[0];
278 } else if ((line_packets & 0xC000) == 0x4000) {
279 av_log(avctx, AV_LOG_ERROR, "Undefined opcode (%x) in DELTA_FLI\n", line_packets);
280 } else if ((line_packets & 0xC000) == 0x8000) {
281 // "last byte" opcode
282 pixel_ptr= y_ptr + s->frame.linesize[0] - 1;
284 pixels[pixel_ptr] = line_packets & 0xff;
289 pixel_countdown = s->avctx->width;
290 for (i = 0; i < line_packets; i++) {
291 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
293 /* account for the skip bytes */
294 pixel_skip = bytestream2_get_byte(&g2);
295 pixel_ptr += pixel_skip;
296 pixel_countdown -= pixel_skip;
297 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
299 byte_run = -byte_run;
300 palette_idx1 = bytestream2_get_byte(&g2);
301 palette_idx2 = bytestream2_get_byte(&g2);
302 CHECK_PIXEL_PTR(byte_run * 2);
303 for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
304 pixels[pixel_ptr++] = palette_idx1;
305 pixels[pixel_ptr++] = palette_idx2;
308 CHECK_PIXEL_PTR(byte_run * 2);
309 if (bytestream2_tell(&g2) + byte_run * 2 > stream_ptr_after_chunk)
311 for (j = 0; j < byte_run * 2; j++, pixel_countdown--) {
312 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
317 y_ptr += s->frame.linesize[0];
323 /* line compressed */
324 starting_line = bytestream2_get_le16(&g2);
326 y_ptr += starting_line * s->frame.linesize[0];
328 compressed_lines = bytestream2_get_le16(&g2);
329 while (compressed_lines > 0) {
332 pixel_countdown = s->avctx->width;
333 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
335 line_packets = bytestream2_get_byte(&g2);
336 if (line_packets > 0) {
337 for (i = 0; i < line_packets; i++) {
338 /* account for the skip bytes */
339 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
341 pixel_skip = bytestream2_get_byte(&g2);
342 pixel_ptr += pixel_skip;
343 pixel_countdown -= pixel_skip;
344 byte_run = sign_extend(bytestream2_get_byte(&g2),8);
346 CHECK_PIXEL_PTR(byte_run);
347 if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
349 for (j = 0; j < byte_run; j++, pixel_countdown--) {
350 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
352 } else if (byte_run < 0) {
353 byte_run = -byte_run;
354 palette_idx1 = bytestream2_get_byte(&g2);
355 CHECK_PIXEL_PTR(byte_run);
356 for (j = 0; j < byte_run; j++, pixel_countdown--) {
357 pixels[pixel_ptr++] = palette_idx1;
363 y_ptr += s->frame.linesize[0];
369 /* set the whole frame to color 0 (which is usually black) */
371 s->frame.linesize[0] * s->avctx->height);
375 /* Byte run compression: This chunk type only occurs in the first
376 * FLI frame and it will update the entire frame. */
378 for (lines = 0; lines < s->avctx->height; lines++) {
380 /* disregard the line packets; instead, iterate through all
382 bytestream2_skip(&g2, 1);
383 pixel_countdown = s->avctx->width;
384 while (pixel_countdown > 0) {
385 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
387 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
389 palette_idx1 = bytestream2_get_byte(&g2);
390 CHECK_PIXEL_PTR(byte_run);
391 for (j = 0; j < byte_run; j++) {
392 pixels[pixel_ptr++] = palette_idx1;
394 if (pixel_countdown < 0)
395 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
396 pixel_countdown, lines);
398 } else { /* copy bytes if byte_run < 0 */
399 byte_run = -byte_run;
400 CHECK_PIXEL_PTR(byte_run);
401 if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
403 for (j = 0; j < byte_run; j++) {
404 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
406 if (pixel_countdown < 0)
407 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
408 pixel_countdown, lines);
413 y_ptr += s->frame.linesize[0];
418 /* copy the chunk (uncompressed frame) */
419 if (chunk_size - 6 != s->avctx->width * s->avctx->height) {
420 av_log(avctx, AV_LOG_ERROR, "In chunk FLI_COPY : source data (%d bytes) " \
421 "has incorrect size, skipping chunk\n", chunk_size - 6);
422 bytestream2_skip(&g2, chunk_size - 6);
424 for (y_ptr = 0; y_ptr < s->frame.linesize[0] * s->avctx->height;
425 y_ptr += s->frame.linesize[0]) {
426 bytestream2_get_buffer(&g2, &pixels[y_ptr],
433 /* some sort of a thumbnail? disregard this chunk... */
437 av_log(avctx, AV_LOG_ERROR, "Unrecognized chunk type: %d\n", chunk_type);
441 if (stream_ptr_after_chunk - bytestream2_tell(&g2) > 0)
442 bytestream2_skip(&g2, stream_ptr_after_chunk - bytestream2_tell(&g2));
444 frame_size -= chunk_size;
448 /* by the end of the chunk, the stream ptr should equal the frame
449 * size (minus 1 or 2, possibly); if it doesn't, issue a warning */
450 if (bytestream2_get_bytes_left(&g2) > 2)
451 av_log(avctx, AV_LOG_ERROR, "Processed FLI chunk where chunk size = %d " \
452 "and final chunk ptr = %d\n", buf_size,
453 buf_size - bytestream2_get_bytes_left(&g2));
455 /* make the palette available on the way out */
456 memcpy(s->frame.data[1], s->palette, AVPALETTE_SIZE);
457 if (s->new_palette) {
458 s->frame.palette_has_changed = 1;
462 *data_size=sizeof(AVFrame);
463 *(AVFrame*)data = s->frame;
468 static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
469 void *data, int *data_size,
470 const uint8_t *buf, int buf_size)
472 /* Note, the only difference between the 15Bpp and 16Bpp */
473 /* Format is the pixel format, the packets are processed the same. */
474 FlicDecodeContext *s = avctx->priv_data;
478 unsigned char palette_idx1;
480 unsigned int frame_size;
483 unsigned int chunk_size;
489 int compressed_lines;
490 signed short line_packets;
495 unsigned char *pixels;
497 unsigned int pixel_limit;
499 bytestream2_init(&g2, buf, buf_size);
501 s->frame.reference = 3;
502 s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
503 if (avctx->reget_buffer(avctx, &s->frame) < 0) {
504 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
508 pixels = s->frame.data[0];
509 pixel_limit = s->avctx->height * s->frame.linesize[0];
511 frame_size = bytestream2_get_le32(&g2);
512 bytestream2_skip(&g2, 2); /* skip the magic number */
513 num_chunks = bytestream2_get_le16(&g2);
514 bytestream2_skip(&g2, 8); /* skip padding */
515 if (frame_size > buf_size)
516 frame_size = buf_size;
520 /* iterate through the chunks */
521 while ((frame_size > 0) && (num_chunks > 0)) {
522 int stream_ptr_after_chunk;
523 chunk_size = bytestream2_get_le32(&g2);
524 if (chunk_size > frame_size) {
525 av_log(avctx, AV_LOG_WARNING,
526 "Invalid chunk_size = %u > frame_size = %u\n", chunk_size, frame_size);
527 chunk_size = frame_size;
529 stream_ptr_after_chunk = bytestream2_tell(&g2) - 4 + chunk_size;
531 chunk_type = bytestream2_get_le16(&g2);
534 switch (chunk_type) {
537 /* For some reason, it seems that non-palettized flics do
538 * include one of these chunks in their first frame.
539 * Why I do not know, it seems rather extraneous. */
540 /* av_log(avctx, AV_LOG_ERROR, "Unexpected Palette chunk %d in non-paletised FLC\n",chunk_type);*/
541 bytestream2_skip(&g2, chunk_size - 6);
547 compressed_lines = bytestream2_get_le16(&g2);
548 while (compressed_lines > 0) {
549 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
551 line_packets = bytestream2_get_le16(&g2);
552 if (line_packets < 0) {
553 line_packets = -line_packets;
554 y_ptr += line_packets * s->frame.linesize[0];
559 pixel_countdown = s->avctx->width;
560 for (i = 0; i < line_packets; i++) {
561 /* account for the skip bytes */
562 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
564 pixel_skip = bytestream2_get_byte(&g2);
565 pixel_ptr += (pixel_skip*2); /* Pixel is 2 bytes wide */
566 pixel_countdown -= pixel_skip;
567 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
569 byte_run = -byte_run;
570 pixel = bytestream2_get_le16(&g2);
571 CHECK_PIXEL_PTR(2 * byte_run);
572 for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
573 *((signed short*)(&pixels[pixel_ptr])) = pixel;
577 if (bytestream2_tell(&g2) + 2*byte_run > stream_ptr_after_chunk)
579 CHECK_PIXEL_PTR(2 * byte_run);
580 for (j = 0; j < byte_run; j++, pixel_countdown--) {
581 *((signed short*)(&pixels[pixel_ptr])) = bytestream2_get_le16(&g2);
587 y_ptr += s->frame.linesize[0];
593 av_log(avctx, AV_LOG_ERROR, "Unexpected FLI_LC chunk in non-paletised FLC\n");
594 bytestream2_skip(&g2, chunk_size - 6);
598 /* set the whole frame to 0x0000 which is black in both 15Bpp and 16Bpp modes. */
599 memset(pixels, 0x0000,
600 s->frame.linesize[0] * s->avctx->height);
605 for (lines = 0; lines < s->avctx->height; lines++) {
607 /* disregard the line packets; instead, iterate through all
609 bytestream2_skip(&g2, 1);
610 pixel_countdown = (s->avctx->width * 2);
612 while (pixel_countdown > 0) {
613 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
615 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
617 palette_idx1 = bytestream2_get_byte(&g2);
618 CHECK_PIXEL_PTR(byte_run);
619 for (j = 0; j < byte_run; j++) {
620 pixels[pixel_ptr++] = palette_idx1;
622 if (pixel_countdown < 0)
623 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) (linea%d)\n",
624 pixel_countdown, lines);
626 } else { /* copy bytes if byte_run < 0 */
627 byte_run = -byte_run;
628 if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
630 CHECK_PIXEL_PTR(byte_run);
631 for (j = 0; j < byte_run; j++) {
632 palette_idx1 = bytestream2_get_byte(&g2);
633 pixels[pixel_ptr++] = palette_idx1;
635 if (pixel_countdown < 0)
636 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
637 pixel_countdown, lines);
642 /* Now FLX is strange, in that it is "byte" as opposed to "pixel" run length compressed.
643 * This does not give us any good oportunity to perform word endian conversion
644 * during decompression. So if it is required (i.e., this is not a LE target, we do
645 * a second pass over the line here, swapping the bytes.
649 pixel_countdown = s->avctx->width;
650 while (pixel_countdown > 0) {
651 *((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[pixel_ptr]);
655 y_ptr += s->frame.linesize[0];
661 for (lines = 0; lines < s->avctx->height; lines++) {
663 /* disregard the line packets; instead, iterate through all
665 bytestream2_skip(&g2, 1);
666 pixel_countdown = s->avctx->width; /* Width is in pixels, not bytes */
668 while (pixel_countdown > 0) {
669 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
671 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
673 pixel = bytestream2_get_le16(&g2);
674 CHECK_PIXEL_PTR(2 * byte_run);
675 for (j = 0; j < byte_run; j++) {
676 *((signed short*)(&pixels[pixel_ptr])) = pixel;
679 if (pixel_countdown < 0)
680 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
683 } else { /* copy pixels if byte_run < 0 */
684 byte_run = -byte_run;
685 if (bytestream2_tell(&g2) + 2 * byte_run > stream_ptr_after_chunk)
687 CHECK_PIXEL_PTR(2 * byte_run);
688 for (j = 0; j < byte_run; j++) {
689 *((signed short*)(&pixels[pixel_ptr])) = bytestream2_get_le16(&g2);
692 if (pixel_countdown < 0)
693 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
699 y_ptr += s->frame.linesize[0];
705 /* copy the chunk (uncompressed frame) */
706 if (chunk_size - 6 > (unsigned int)(s->avctx->width * s->avctx->height)*2) {
707 av_log(avctx, AV_LOG_ERROR, "In chunk FLI_COPY : source data (%d bytes) " \
708 "bigger than image, skipping chunk\n", chunk_size - 6);
709 bytestream2_skip(&g2, chunk_size - 6);
712 for (y_ptr = 0; y_ptr < s->frame.linesize[0] * s->avctx->height;
713 y_ptr += s->frame.linesize[0]) {
715 pixel_countdown = s->avctx->width;
717 while (pixel_countdown > 0) {
718 *((signed short*)(&pixels[y_ptr + pixel_ptr])) = bytestream2_get_le16(&g2);
727 /* some sort of a thumbnail? disregard this chunk... */
728 bytestream2_skip(&g2, chunk_size - 6);
732 av_log(avctx, AV_LOG_ERROR, "Unrecognized chunk type: %d\n", chunk_type);
736 frame_size -= chunk_size;
740 /* by the end of the chunk, the stream ptr should equal the frame
741 * size (minus 1, possibly); if it doesn't, issue a warning */
742 if ((bytestream2_get_bytes_left(&g2) != 0) && (bytestream2_get_bytes_left(&g2) != 1))
743 av_log(avctx, AV_LOG_ERROR, "Processed FLI chunk where chunk size = %d " \
744 "and final chunk ptr = %d\n", buf_size, bytestream2_tell(&g2));
747 *data_size=sizeof(AVFrame);
748 *(AVFrame*)data = s->frame;
753 static int flic_decode_frame_24BPP(AVCodecContext *avctx,
754 void *data, int *data_size,
755 const uint8_t *buf, int buf_size)
757 av_log(avctx, AV_LOG_ERROR, "24Bpp FLC Unsupported due to lack of test files.\n");
761 static int flic_decode_frame(AVCodecContext *avctx,
762 void *data, int *data_size,
765 const uint8_t *buf = avpkt->data;
766 int buf_size = avpkt->size;
767 if (avctx->pix_fmt == PIX_FMT_PAL8) {
768 return flic_decode_frame_8BPP(avctx, data, data_size,
771 else if ((avctx->pix_fmt == PIX_FMT_RGB555) ||
772 (avctx->pix_fmt == PIX_FMT_RGB565)) {
773 return flic_decode_frame_15_16BPP(avctx, data, data_size,
776 else if (avctx->pix_fmt == PIX_FMT_BGR24) {
777 return flic_decode_frame_24BPP(avctx, data, data_size,
781 /* Should not get here, ever as the pix_fmt is processed */
782 /* in flic_decode_init and the above if should deal with */
783 /* the finite set of possibilites allowable by here. */
784 /* But in case we do, just error out. */
785 av_log(avctx, AV_LOG_ERROR, "Unknown FLC format, my science cannot explain how this happened.\n");
790 static av_cold int flic_decode_end(AVCodecContext *avctx)
792 FlicDecodeContext *s = avctx->priv_data;
794 if (s->frame.data[0])
795 avctx->release_buffer(avctx, &s->frame);
800 AVCodec ff_flic_decoder = {
802 .type = AVMEDIA_TYPE_VIDEO,
804 .priv_data_size = sizeof(FlicDecodeContext),
805 .init = flic_decode_init,
806 .close = flic_decode_end,
807 .decode = flic_decode_frame,
808 .capabilities = CODEC_CAP_DR1,
809 .long_name = NULL_IF_CONFIG_SMALL("Autodesk Animator Flic video"),