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"
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) /* Marks an "Extended FLC" comes from Dave's Targa Animator (DTA) */
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; \
72 typedef struct FlicDecodeContext {
73 AVCodecContext *avctx;
76 unsigned int palette[256];
78 int fli_type; /* either 0xAF11 or 0xAF12, affects palette resolution */
81 static av_cold int flic_decode_init(AVCodecContext *avctx)
83 FlicDecodeContext *s = avctx->priv_data;
84 unsigned char *fli_header = (unsigned char *)avctx->extradata;
87 if (avctx->extradata_size != 0 &&
88 avctx->extradata_size != 12 &&
89 avctx->extradata_size != 128 &&
90 avctx->extradata_size != 256 &&
91 avctx->extradata_size != 904 &&
92 avctx->extradata_size != 1024) {
93 av_log(avctx, AV_LOG_ERROR, "Unexpected extradata size %d\n", avctx->extradata_size);
94 return AVERROR_INVALIDDATA;
99 if (s->avctx->extradata_size == 12) {
100 /* special case for magic carpet FLIs */
101 s->fli_type = FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE;
103 } else if (avctx->extradata_size == 1024) {
104 uint8_t *ptr = avctx->extradata;
107 for (i = 0; i < 256; i++) {
108 s->palette[i] = AV_RL32(ptr);
112 /* FLI in MOV, see e.g. FFmpeg trac issue #626 */
113 } else if (avctx->extradata_size == 0 ||
114 avctx->extradata_size == 256 ||
115 /* see FFmpeg ticket #1234 */
116 avctx->extradata_size == 904) {
117 s->fli_type = FLI_TYPE_CODE;
120 s->fli_type = AV_RL16(&fli_header[4]);
121 depth = AV_RL16(&fli_header[12]);
125 depth = 8; /* Some FLC generators set depth to zero, when they mean 8Bpp. Fix up here */
128 if ((s->fli_type == FLC_FLX_TYPE_CODE) && (depth == 16)) {
129 depth = 15; /* Original Autodesk FLX's say the depth is 16Bpp when it is really 15Bpp */
133 case 8 : avctx->pix_fmt = AV_PIX_FMT_PAL8; break;
134 case 15 : avctx->pix_fmt = AV_PIX_FMT_RGB555; break;
135 case 16 : avctx->pix_fmt = AV_PIX_FMT_RGB565; break;
136 case 24 : avctx->pix_fmt = AV_PIX_FMT_BGR24; /* Supposedly BGR, but havent any files to test with */
137 avpriv_request_sample(avctx, "24Bpp FLC/FLX");
138 return AVERROR_PATCHWELCOME;
140 av_log(avctx, AV_LOG_ERROR, "Unknown FLC/FLX depth of %d Bpp is unsupported.\n",depth);
141 return AVERROR_INVALIDDATA;
144 avcodec_get_frame_defaults(&s->frame);
150 static int flic_decode_frame_8BPP(AVCodecContext *avctx,
151 void *data, int *got_frame,
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 if ((ret = ff_reget_buffer(avctx, &s->frame)) < 0)
191 pixels = s->frame.data[0];
192 pixel_limit = s->avctx->height * s->frame.linesize[0];
193 if (buf_size < 16 || buf_size > INT_MAX - (3 * 256 + FF_INPUT_BUFFER_PADDING_SIZE))
194 return AVERROR_INVALIDDATA;
195 frame_size = bytestream2_get_le32(&g2);
196 if (frame_size > buf_size)
197 frame_size = buf_size;
198 bytestream2_skip(&g2, 2); /* skip the magic number */
199 num_chunks = bytestream2_get_le16(&g2);
200 bytestream2_skip(&g2, 8); /* skip padding */
204 /* iterate through the chunks */
205 while ((frame_size >= 6) && (num_chunks > 0) &&
206 bytestream2_get_bytes_left(&g2) >= 4) {
207 int stream_ptr_after_chunk;
208 chunk_size = bytestream2_get_le32(&g2);
209 if (chunk_size > frame_size) {
210 av_log(avctx, AV_LOG_WARNING,
211 "Invalid chunk_size = %u > frame_size = %u\n", chunk_size, frame_size);
212 chunk_size = frame_size;
214 stream_ptr_after_chunk = bytestream2_tell(&g2) - 4 + chunk_size;
216 chunk_type = bytestream2_get_le16(&g2);
218 switch (chunk_type) {
221 /* check special case: If this file is from the Magic Carpet
222 * game and uses 6-bit colors even though it reports 256-color
223 * chunks in a 0xAF12-type file (fli_type is set to 0xAF13 during
225 if ((chunk_type == FLI_256_COLOR) && (s->fli_type != FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE))
229 /* set up the palette */
230 color_packets = bytestream2_get_le16(&g2);
232 for (i = 0; i < color_packets; i++) {
233 /* first byte is how many colors to skip */
234 palette_ptr += bytestream2_get_byte(&g2);
236 /* next byte indicates how many entries to change */
237 color_changes = bytestream2_get_byte(&g2);
239 /* if there are 0 color changes, there are actually 256 */
240 if (color_changes == 0)
243 if (bytestream2_tell(&g2) + color_changes * 3 > stream_ptr_after_chunk)
246 for (j = 0; j < color_changes; j++) {
249 /* wrap around, for good measure */
250 if ((unsigned)palette_ptr >= 256)
253 r = bytestream2_get_byte(&g2) << color_shift;
254 g = bytestream2_get_byte(&g2) << color_shift;
255 b = bytestream2_get_byte(&g2) << color_shift;
256 entry = 0xFFU << 24 | r << 16 | g << 8 | b;
257 if (color_shift == 2)
258 entry |= entry >> 6 & 0x30303;
259 if (s->palette[palette_ptr] != entry)
261 s->palette[palette_ptr++] = entry;
268 compressed_lines = bytestream2_get_le16(&g2);
269 while (compressed_lines > 0) {
270 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
272 line_packets = bytestream2_get_le16(&g2);
273 if ((line_packets & 0xC000) == 0xC000) {
275 line_packets = -line_packets;
276 y_ptr += line_packets * s->frame.linesize[0];
277 } else if ((line_packets & 0xC000) == 0x4000) {
278 av_log(avctx, AV_LOG_ERROR, "Undefined opcode (%x) in DELTA_FLI\n", line_packets);
279 } else if ((line_packets & 0xC000) == 0x8000) {
280 // "last byte" opcode
281 pixel_ptr= y_ptr + s->frame.linesize[0] - 1;
283 pixels[pixel_ptr] = line_packets & 0xff;
288 pixel_countdown = s->avctx->width;
289 for (i = 0; i < line_packets; i++) {
290 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
292 /* account for the skip bytes */
293 pixel_skip = bytestream2_get_byte(&g2);
294 pixel_ptr += pixel_skip;
295 pixel_countdown -= pixel_skip;
296 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
298 byte_run = -byte_run;
299 palette_idx1 = bytestream2_get_byte(&g2);
300 palette_idx2 = bytestream2_get_byte(&g2);
301 CHECK_PIXEL_PTR(byte_run * 2);
302 for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
303 pixels[pixel_ptr++] = palette_idx1;
304 pixels[pixel_ptr++] = palette_idx2;
307 CHECK_PIXEL_PTR(byte_run * 2);
308 if (bytestream2_tell(&g2) + byte_run * 2 > stream_ptr_after_chunk)
310 for (j = 0; j < byte_run * 2; j++, pixel_countdown--) {
311 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
316 y_ptr += s->frame.linesize[0];
322 /* line compressed */
323 starting_line = bytestream2_get_le16(&g2);
325 y_ptr += starting_line * s->frame.linesize[0];
327 compressed_lines = bytestream2_get_le16(&g2);
328 while (compressed_lines > 0) {
331 pixel_countdown = s->avctx->width;
332 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
334 line_packets = bytestream2_get_byte(&g2);
335 if (line_packets > 0) {
336 for (i = 0; i < line_packets; i++) {
337 /* account for the skip bytes */
338 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
340 pixel_skip = bytestream2_get_byte(&g2);
341 pixel_ptr += pixel_skip;
342 pixel_countdown -= pixel_skip;
343 byte_run = sign_extend(bytestream2_get_byte(&g2),8);
345 CHECK_PIXEL_PTR(byte_run);
346 if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
348 for (j = 0; j < byte_run; j++, pixel_countdown--) {
349 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
351 } else if (byte_run < 0) {
352 byte_run = -byte_run;
353 palette_idx1 = bytestream2_get_byte(&g2);
354 CHECK_PIXEL_PTR(byte_run);
355 for (j = 0; j < byte_run; j++, pixel_countdown--) {
356 pixels[pixel_ptr++] = palette_idx1;
362 y_ptr += s->frame.linesize[0];
368 /* set the whole frame to color 0 (which is usually black) */
370 s->frame.linesize[0] * s->avctx->height);
374 /* Byte run compression: This chunk type only occurs in the first
375 * FLI frame and it will update the entire frame. */
377 for (lines = 0; lines < s->avctx->height; lines++) {
379 /* disregard the line packets; instead, iterate through all
381 bytestream2_skip(&g2, 1);
382 pixel_countdown = s->avctx->width;
383 while (pixel_countdown > 0) {
384 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
386 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
388 av_log(avctx, AV_LOG_ERROR, "Invalid byte run value.\n");
389 return AVERROR_INVALIDDATA;
393 palette_idx1 = bytestream2_get_byte(&g2);
394 CHECK_PIXEL_PTR(byte_run);
395 for (j = 0; j < byte_run; j++) {
396 pixels[pixel_ptr++] = palette_idx1;
398 if (pixel_countdown < 0)
399 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
400 pixel_countdown, lines);
402 } else { /* copy bytes if byte_run < 0 */
403 byte_run = -byte_run;
404 CHECK_PIXEL_PTR(byte_run);
405 if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
407 for (j = 0; j < byte_run; j++) {
408 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
410 if (pixel_countdown < 0)
411 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
412 pixel_countdown, lines);
417 y_ptr += s->frame.linesize[0];
422 /* copy the chunk (uncompressed frame) */
423 if (chunk_size - 6 != s->avctx->width * s->avctx->height) {
424 av_log(avctx, AV_LOG_ERROR, "In chunk FLI_COPY : source data (%d bytes) " \
425 "has incorrect size, skipping chunk\n", chunk_size - 6);
426 bytestream2_skip(&g2, chunk_size - 6);
428 for (y_ptr = 0; y_ptr < s->frame.linesize[0] * s->avctx->height;
429 y_ptr += s->frame.linesize[0]) {
430 bytestream2_get_buffer(&g2, &pixels[y_ptr],
437 /* some sort of a thumbnail? disregard this chunk... */
441 av_log(avctx, AV_LOG_ERROR, "Unrecognized chunk type: %d\n", chunk_type);
445 if (stream_ptr_after_chunk - bytestream2_tell(&g2) > 0)
446 bytestream2_skip(&g2, stream_ptr_after_chunk - bytestream2_tell(&g2));
448 frame_size -= chunk_size;
452 /* by the end of the chunk, the stream ptr should equal the frame
453 * size (minus 1 or 2, possibly); if it doesn't, issue a warning */
454 if (bytestream2_get_bytes_left(&g2) > 2)
455 av_log(avctx, AV_LOG_ERROR, "Processed FLI chunk where chunk size = %d " \
456 "and final chunk ptr = %d\n", buf_size,
457 buf_size - bytestream2_get_bytes_left(&g2));
459 /* make the palette available on the way out */
460 memcpy(s->frame.data[1], s->palette, AVPALETTE_SIZE);
461 if (s->new_palette) {
462 s->frame.palette_has_changed = 1;
466 if ((ret = av_frame_ref(data, &s->frame)) < 0)
474 static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
475 void *data, int *got_frame,
476 const uint8_t *buf, int buf_size)
478 /* Note, the only difference between the 15Bpp and 16Bpp */
479 /* Format is the pixel format, the packets are processed the same. */
480 FlicDecodeContext *s = avctx->priv_data;
484 unsigned char palette_idx1;
486 unsigned int frame_size;
489 unsigned int chunk_size;
495 int compressed_lines;
496 signed short line_packets;
501 unsigned char *pixels;
503 unsigned int pixel_limit;
505 bytestream2_init(&g2, buf, buf_size);
507 if ((ret = ff_reget_buffer(avctx, &s->frame)) < 0)
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 bytestream2_get_bytes_left(&g2) >= 4) {
525 int stream_ptr_after_chunk;
526 chunk_size = bytestream2_get_le32(&g2);
527 if (chunk_size > frame_size) {
528 av_log(avctx, AV_LOG_WARNING,
529 "Invalid chunk_size = %u > frame_size = %u\n", chunk_size, frame_size);
530 chunk_size = frame_size;
532 stream_ptr_after_chunk = bytestream2_tell(&g2) - 4 + chunk_size;
534 chunk_type = bytestream2_get_le16(&g2);
537 switch (chunk_type) {
540 /* For some reason, it seems that non-palettized flics do
541 * include one of these chunks in their first frame.
542 * Why I do not know, it seems rather extraneous. */
544 "Unexpected Palette chunk %d in non-palettized FLC\n",
546 bytestream2_skip(&g2, chunk_size - 6);
552 compressed_lines = bytestream2_get_le16(&g2);
553 while (compressed_lines > 0) {
554 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
556 line_packets = bytestream2_get_le16(&g2);
557 if (line_packets < 0) {
558 line_packets = -line_packets;
559 y_ptr += line_packets * s->frame.linesize[0];
564 pixel_countdown = s->avctx->width;
565 for (i = 0; i < line_packets; i++) {
566 /* account for the skip bytes */
567 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
569 pixel_skip = bytestream2_get_byte(&g2);
570 pixel_ptr += (pixel_skip*2); /* Pixel is 2 bytes wide */
571 pixel_countdown -= pixel_skip;
572 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
574 byte_run = -byte_run;
575 pixel = bytestream2_get_le16(&g2);
576 CHECK_PIXEL_PTR(2 * byte_run);
577 for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
578 *((signed short*)(&pixels[pixel_ptr])) = pixel;
582 if (bytestream2_tell(&g2) + 2*byte_run > stream_ptr_after_chunk)
584 CHECK_PIXEL_PTR(2 * byte_run);
585 for (j = 0; j < byte_run; j++, pixel_countdown--) {
586 *((signed short*)(&pixels[pixel_ptr])) = bytestream2_get_le16(&g2);
592 y_ptr += s->frame.linesize[0];
598 av_log(avctx, AV_LOG_ERROR, "Unexpected FLI_LC chunk in non-palettized FLC\n");
599 bytestream2_skip(&g2, chunk_size - 6);
603 /* set the whole frame to 0x0000 which is black in both 15Bpp and 16Bpp modes. */
604 memset(pixels, 0x0000,
605 s->frame.linesize[0] * s->avctx->height);
610 for (lines = 0; lines < s->avctx->height; lines++) {
612 /* disregard the line packets; instead, iterate through all
614 bytestream2_skip(&g2, 1);
615 pixel_countdown = (s->avctx->width * 2);
617 while (pixel_countdown > 0) {
618 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
620 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
622 palette_idx1 = bytestream2_get_byte(&g2);
623 CHECK_PIXEL_PTR(byte_run);
624 for (j = 0; j < byte_run; j++) {
625 pixels[pixel_ptr++] = palette_idx1;
627 if (pixel_countdown < 0)
628 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) (linea%d)\n",
629 pixel_countdown, lines);
631 } else { /* copy bytes if byte_run < 0 */
632 byte_run = -byte_run;
633 if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
635 CHECK_PIXEL_PTR(byte_run);
636 for (j = 0; j < byte_run; j++) {
637 palette_idx1 = bytestream2_get_byte(&g2);
638 pixels[pixel_ptr++] = palette_idx1;
640 if (pixel_countdown < 0)
641 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
642 pixel_countdown, lines);
647 /* Now FLX is strange, in that it is "byte" as opposed to "pixel" run length compressed.
648 * This does not give us any good opportunity to perform word endian conversion
649 * during decompression. So if it is required (i.e., this is not a LE target, we do
650 * a second pass over the line here, swapping the bytes.
654 pixel_countdown = s->avctx->width;
655 while (pixel_countdown > 0) {
656 *((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[pixel_ptr]);
660 y_ptr += s->frame.linesize[0];
666 for (lines = 0; lines < s->avctx->height; lines++) {
668 /* disregard the line packets; instead, iterate through all
670 bytestream2_skip(&g2, 1);
671 pixel_countdown = s->avctx->width; /* Width is in pixels, not bytes */
673 while (pixel_countdown > 0) {
674 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
676 byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
678 pixel = bytestream2_get_le16(&g2);
679 CHECK_PIXEL_PTR(2 * byte_run);
680 for (j = 0; j < byte_run; j++) {
681 *((signed short*)(&pixels[pixel_ptr])) = pixel;
684 if (pixel_countdown < 0)
685 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
688 } else { /* copy pixels if byte_run < 0 */
689 byte_run = -byte_run;
690 if (bytestream2_tell(&g2) + 2 * byte_run > stream_ptr_after_chunk)
692 CHECK_PIXEL_PTR(2 * byte_run);
693 for (j = 0; j < byte_run; j++) {
694 *((signed short*)(&pixels[pixel_ptr])) = bytestream2_get_le16(&g2);
697 if (pixel_countdown < 0)
698 av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
704 y_ptr += s->frame.linesize[0];
710 /* copy the chunk (uncompressed frame) */
711 if (chunk_size - 6 > (unsigned int)(s->avctx->width * s->avctx->height)*2) {
712 av_log(avctx, AV_LOG_ERROR, "In chunk FLI_COPY : source data (%d bytes) " \
713 "bigger than image, skipping chunk\n", chunk_size - 6);
714 bytestream2_skip(&g2, chunk_size - 6);
717 for (y_ptr = 0; y_ptr < s->frame.linesize[0] * s->avctx->height;
718 y_ptr += s->frame.linesize[0]) {
720 pixel_countdown = s->avctx->width;
722 while (pixel_countdown > 0) {
723 *((signed short*)(&pixels[y_ptr + pixel_ptr])) = bytestream2_get_le16(&g2);
732 /* some sort of a thumbnail? disregard this chunk... */
733 bytestream2_skip(&g2, chunk_size - 6);
737 av_log(avctx, AV_LOG_ERROR, "Unrecognized chunk type: %d\n", chunk_type);
741 frame_size -= chunk_size;
745 /* by the end of the chunk, the stream ptr should equal the frame
746 * size (minus 1, possibly); if it doesn't, issue a warning */
747 if ((bytestream2_get_bytes_left(&g2) != 0) && (bytestream2_get_bytes_left(&g2) != 1))
748 av_log(avctx, AV_LOG_ERROR, "Processed FLI chunk where chunk size = %d " \
749 "and final chunk ptr = %d\n", buf_size, bytestream2_tell(&g2));
751 if ((ret = av_frame_ref(data, &s->frame)) < 0)
759 static int flic_decode_frame_24BPP(AVCodecContext *avctx,
760 void *data, int *got_frame,
761 const uint8_t *buf, int buf_size)
763 av_log(avctx, AV_LOG_ERROR, "24Bpp FLC Unsupported due to lack of test files.\n");
764 return AVERROR_PATCHWELCOME;
767 static int flic_decode_frame(AVCodecContext *avctx,
768 void *data, int *got_frame,
771 const uint8_t *buf = avpkt->data;
772 int buf_size = avpkt->size;
773 if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
774 return flic_decode_frame_8BPP(avctx, data, got_frame,
777 else if ((avctx->pix_fmt == AV_PIX_FMT_RGB555) ||
778 (avctx->pix_fmt == AV_PIX_FMT_RGB565)) {
779 return flic_decode_frame_15_16BPP(avctx, data, got_frame,
782 else if (avctx->pix_fmt == AV_PIX_FMT_BGR24) {
783 return flic_decode_frame_24BPP(avctx, data, got_frame,
787 /* Should not get here, ever as the pix_fmt is processed */
788 /* in flic_decode_init and the above if should deal with */
789 /* the finite set of possibilites allowable by here. */
790 /* But in case we do, just error out. */
791 av_log(avctx, AV_LOG_ERROR, "Unknown FLC format, my science cannot explain how this happened.\n");
796 static av_cold int flic_decode_end(AVCodecContext *avctx)
798 FlicDecodeContext *s = avctx->priv_data;
800 av_frame_unref(&s->frame);
805 AVCodec ff_flic_decoder = {
807 .long_name = NULL_IF_CONFIG_SMALL("Autodesk Animator Flic video"),
808 .type = AVMEDIA_TYPE_VIDEO,
809 .id = AV_CODEC_ID_FLIC,
810 .priv_data_size = sizeof(FlicDecodeContext),
811 .init = flic_decode_init,
812 .close = flic_decode_end,
813 .decode = flic_decode_frame,
814 .capabilities = CODEC_CAP_DR1,