* FLI/FLC Animation Video Decoder
* Copyright (C) 2003, 2004 the ffmpeg project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file flic.c
+ * @file
* Autodesk Animator FLI/FLC Video Decoder
* by Mike Melanson (melanson@pcisys.net)
* for more information on the .fli/.flc file format and all of its many
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
+#include "libavutil/intreadwrite.h"
#include "avcodec.h"
-#include "bswap.h"
#define FLI_256_COLOR 4
#define FLI_DELTA 7
int fli_type; /* either 0xAF11 or 0xAF12, affects palette resolution */
} FlicDecodeContext;
-static int flic_decode_init(AVCodecContext *avctx)
+static av_cold int flic_decode_init(AVCodecContext *avctx)
{
FlicDecodeContext *s = avctx->priv_data;
unsigned char *fli_header = (unsigned char *)avctx->extradata;
int depth;
+ if (avctx->extradata_size != 12 &&
+ avctx->extradata_size != 128) {
+ av_log(avctx, AV_LOG_ERROR, "Expected extradata of 12 or 128 bytes\n");
+ return AVERROR_INVALIDDATA;
+ }
+
s->avctx = avctx;
s->fli_type = AV_RL16(&fli_header[4]); /* Might be overridden if a Magic Carpet FLC */
/* special case for magic carpet FLIs */
s->fli_type = FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE;
depth = 8;
- } else if (s->avctx->extradata_size != 128) {
- av_log(avctx, AV_LOG_ERROR, "Expected extradata of 12 or 128 bytes\n");
- return -1;
} else {
depth = AV_RL16(&fli_header[12]);
}
case 24 : avctx->pix_fmt = PIX_FMT_BGR24; /* Supposedly BGR, but havent any files to test with */
av_log(avctx, AV_LOG_ERROR, "24Bpp FLC/FLX is unsupported due to no test files.\n");
return -1;
- break;
default :
av_log(avctx, AV_LOG_ERROR, "Unknown FLC/FLX depth of %d Bpp is unsupported.\n",depth);
return -1;
int pixel_skip;
int pixel_countdown;
unsigned char *pixels;
- int pixel_limit;
+ unsigned int pixel_limit;
s->frame.reference = 1;
s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
av_log(avctx, AV_LOG_ERROR, "Undefined opcode (%x) in DELTA_FLI\n", line_packets);
} else if ((line_packets & 0xC000) == 0x8000) {
// "last byte" opcode
- pixels[y_ptr + s->frame.linesize[0] - 1] = line_packets & 0xff;
+ pixel_ptr= y_ptr + s->frame.linesize[0] - 1;
+ CHECK_PIXEL_PTR(0);
+ pixels[pixel_ptr] = line_packets & 0xff;
} else {
compressed_lines--;
pixel_ptr = y_ptr;
+ CHECK_PIXEL_PTR(0);
pixel_countdown = s->avctx->width;
for (i = 0; i < line_packets; i++) {
/* account for the skip bytes */
byte_run = -byte_run;
palette_idx1 = buf[stream_ptr++];
palette_idx2 = buf[stream_ptr++];
- CHECK_PIXEL_PTR(byte_run);
+ CHECK_PIXEL_PTR(byte_run * 2);
for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
pixels[pixel_ptr++] = palette_idx1;
pixels[pixel_ptr++] = palette_idx2;
stream_ptr += 2;
while (compressed_lines > 0) {
pixel_ptr = y_ptr;
+ CHECK_PIXEL_PTR(0);
pixel_countdown = s->avctx->width;
line_packets = buf[stream_ptr++];
if (line_packets > 0) {
int pixel_countdown;
unsigned char *pixels;
int pixel;
- int pixel_limit;
+ unsigned int pixel_limit;
s->frame.reference = 1;
s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
} else {
compressed_lines--;
pixel_ptr = y_ptr;
+ CHECK_PIXEL_PTR(0);
pixel_countdown = s->avctx->width;
for (i = 0; i < line_packets; i++) {
/* account for the skip bytes */
byte_run = -byte_run;
pixel = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
- CHECK_PIXEL_PTR(byte_run);
+ CHECK_PIXEL_PTR(2 * byte_run);
for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
*((signed short*)(&pixels[pixel_ptr])) = pixel;
pixel_ptr += 2;
}
} else {
- CHECK_PIXEL_PTR(byte_run);
+ CHECK_PIXEL_PTR(2 * byte_run);
for (j = 0; j < byte_run; j++, pixel_countdown--) {
*((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
* during decompression. So if it is required (i.e., this is not a LE target, we do
* a second pass over the line here, swapping the bytes.
*/
-#ifdef WORDS_BIGENDIAN
+#if HAVE_BIGENDIAN
pixel_ptr = y_ptr;
pixel_countdown = s->avctx->width;
while (pixel_countdown > 0) {
if (byte_run > 0) {
pixel = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
- CHECK_PIXEL_PTR(byte_run);
+ CHECK_PIXEL_PTR(2 * byte_run);
for (j = 0; j < byte_run; j++) {
*((signed short*)(&pixels[pixel_ptr])) = pixel;
pixel_ptr += 2;
}
} else { /* copy pixels if byte_run < 0 */
byte_run = -byte_run;
- CHECK_PIXEL_PTR(byte_run);
+ CHECK_PIXEL_PTR(2 * byte_run);
for (j = 0; j < byte_run; j++) {
*((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
static int flic_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
if (avctx->pix_fmt == PIX_FMT_PAL8) {
return flic_decode_frame_8BPP(avctx, data, data_size,
buf, buf_size);
}
-static int flic_decode_end(AVCodecContext *avctx)
+static av_cold int flic_decode_end(AVCodecContext *avctx)
{
FlicDecodeContext *s = avctx->priv_data;
return 0;
}
-AVCodec flic_decoder = {
- "flic",
- CODEC_TYPE_VIDEO,
- CODEC_ID_FLIC,
- sizeof(FlicDecodeContext),
- flic_decode_init,
- NULL,
- flic_decode_end,
- flic_decode_frame,
- CODEC_CAP_DR1,
- NULL,
- NULL,
- NULL,
- NULL
+AVCodec ff_flic_decoder = {
+ .name = "flic",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_FLIC,
+ .priv_data_size = sizeof(FlicDecodeContext),
+ .init = flic_decode_init,
+ .close = flic_decode_end,
+ .decode = flic_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Autodesk Animator Flic video"),
};
projects / ffmpeg / blobdiff