* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; 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;
s->avctx = avctx;
s->fli_type = AV_RL16(&fli_header[4]); /* Might be overridden if a Magic Carpet FLC */
- depth = AV_RL16(&fli_header[12]);
-
- if (depth == 0) {
- depth = 8; /* Some FLC generators set depth to zero, when they mean 8Bpp. Fix up here */
- }
+ depth = 0;
if (s->avctx->extradata_size == 12) {
/* 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]);
+ }
+
+ if (depth == 0) {
+ depth = 8; /* Some FLC generators set depth to zero, when they mean 8Bpp. Fix up here */
}
if ((s->fli_type == FLC_FLX_TYPE_CODE) && (depth == 16)) {
static int flic_decode_frame_8BPP(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ const uint8_t *buf, int buf_size)
{
FlicDecodeContext *s = avctx->priv_data;
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) {
static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ const uint8_t *buf, int buf_size)
{
/* Note, the only difference between the 15Bpp and 16Bpp */
/* Format is the pixel format, the packets are processed the same. */
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;
switch (chunk_type) {
case FLI_256_COLOR:
case FLI_COLOR:
- /* For some reason, it seems that non-paletised flics do include one of these */
- /* chunks in their first frame. Why i do not know, it seems rather extraneous */
+ /* For some reason, it seems that non-palettized flics do
+ * include one of these chunks in their first frame.
+ * Why I do not know, it seems rather extraneous. */
/* av_log(avctx, AV_LOG_ERROR, "Unexpected Palette chunk %d in non-paletised FLC\n",chunk_type);*/
stream_ptr = stream_ptr + chunk_size - 6;
break;
} 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.
*/
- pixel = 0xFF00;
- if (0xFF00 != AV_RL16(&pixel)) /* Check if its not an LE Target */
- {
- pixel_ptr = y_ptr;
- pixel_countdown = s->avctx->width;
- while (pixel_countdown > 0) {
+#if HAVE_BIGENDIAN
+ pixel_ptr = y_ptr;
+ pixel_countdown = s->avctx->width;
+ while (pixel_countdown > 0) {
*((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[pixel_ptr]);
pixel_ptr += 2;
- }
}
+#endif
y_ptr += s->frame.linesize[0];
}
break;
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_24BPP(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ const uint8_t *buf, int buf_size)
{
av_log(avctx, AV_LOG_ERROR, "24Bpp FLC Unsupported due to lack of test files.\n");
return -1;
static int flic_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- 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;
AVCodec flic_decoder = {
"flic",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_FLIC,
sizeof(FlicDecodeContext),
flic_decode_init,
NULL,
NULL,
NULL,
- NULL
+ NULL,
+ .long_name = NULL_IF_CONFIG_SMALL("Autodesk Animator Flic video"),
};