* 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 libavcodec/flicvideo.c
* 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 <string.h>
#include <unistd.h>
-#include "common.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 = (FlicDecodeContext *)avctx->priv_data;
+ FlicDecodeContext *s = avctx->priv_data;
unsigned char *fli_header = (unsigned char *)avctx->extradata;
int depth;
s->avctx = avctx;
- avctx->has_b_frames = 0;
-
- s->fli_type = LE_16(&fli_header[4]); /* Might be overridden if a Magic Carpet FLC */
- depth = LE_16(&fli_header[12]);
- if (depth == 0) {
- depth = 8; /* Some FLC generators set depth to zero, when they mean 8Bpp. Fix up here */
- }
+ s->fli_type = AV_RL16(&fli_header[4]); /* Might be overridden if a Magic Carpet FLC */
+ 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)) {
return -1;
break;
default :
- av_log(avctx, AV_LOG_ERROR, "Unkown FLC/FLX depth of %d Bpp is unsupported.\n",depth);
+ av_log(avctx, AV_LOG_ERROR, "Unknown FLC/FLX depth of %d Bpp is unsupported.\n",depth);
return -1;
}
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 = (FlicDecodeContext *)avctx->priv_data;
+ FlicDecodeContext *s = avctx->priv_data;
int stream_ptr = 0;
int stream_ptr_after_color_chunk;
pixels = s->frame.data[0];
pixel_limit = s->avctx->height * s->frame.linesize[0];
- frame_size = LE_32(&buf[stream_ptr]);
+ frame_size = AV_RL32(&buf[stream_ptr]);
stream_ptr += 6; /* skip the magic number */
- num_chunks = LE_16(&buf[stream_ptr]);
+ num_chunks = AV_RL16(&buf[stream_ptr]);
stream_ptr += 10; /* skip padding */
frame_size -= 16;
/* iterate through the chunks */
while ((frame_size > 0) && (num_chunks > 0)) {
- chunk_size = LE_32(&buf[stream_ptr]);
+ chunk_size = AV_RL32(&buf[stream_ptr]);
stream_ptr += 4;
- chunk_type = LE_16(&buf[stream_ptr]);
+ chunk_type = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
switch (chunk_type) {
else
color_shift = 2;
/* set up the palette */
- color_packets = LE_16(&buf[stream_ptr]);
+ color_packets = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
palette_ptr = 0;
for (i = 0; i < color_packets; i++) {
case FLI_DELTA:
y_ptr = 0;
- compressed_lines = LE_16(&buf[stream_ptr]);
+ compressed_lines = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
while (compressed_lines > 0) {
- line_packets = LE_16(&buf[stream_ptr]);
+ line_packets = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
if ((line_packets & 0xC000) == 0xC000) {
// line skip opcode
case FLI_LC:
/* line compressed */
- starting_line = LE_16(&buf[stream_ptr]);
+ starting_line = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
y_ptr = 0;
y_ptr += starting_line * s->frame.linesize[0];
- compressed_lines = LE_16(&buf[stream_ptr]);
+ compressed_lines = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
while (compressed_lines > 0) {
pixel_ptr = y_ptr;
pixels[pixel_ptr++] = palette_idx1;
pixel_countdown--;
if (pixel_countdown < 0)
- av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
- pixel_countdown);
+ av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
+ pixel_countdown, lines);
}
} else { /* copy bytes if byte_run < 0 */
byte_run = -byte_run;
pixels[pixel_ptr++] = palette_idx1;
pixel_countdown--;
if (pixel_countdown < 0)
- av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
- pixel_countdown);
+ av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
+ pixel_countdown, lines);
}
}
}
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. */
- FlicDecodeContext *s = (FlicDecodeContext *)avctx->priv_data;
+ FlicDecodeContext *s = avctx->priv_data;
int stream_ptr = 0;
int pixel_ptr;
pixels = s->frame.data[0];
pixel_limit = s->avctx->height * s->frame.linesize[0];
- frame_size = LE_32(&buf[stream_ptr]);
+ frame_size = AV_RL32(&buf[stream_ptr]);
stream_ptr += 6; /* skip the magic number */
- num_chunks = LE_16(&buf[stream_ptr]);
+ num_chunks = AV_RL16(&buf[stream_ptr]);
stream_ptr += 10; /* skip padding */
frame_size -= 16;
/* iterate through the chunks */
while ((frame_size > 0) && (num_chunks > 0)) {
- chunk_size = LE_32(&buf[stream_ptr]);
+ chunk_size = AV_RL32(&buf[stream_ptr]);
stream_ptr += 4;
- chunk_type = LE_16(&buf[stream_ptr]);
+ chunk_type = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
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;
case FLI_DELTA:
case FLI_DTA_LC:
y_ptr = 0;
- compressed_lines = LE_16(&buf[stream_ptr]);
+ compressed_lines = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
while (compressed_lines > 0) {
- line_packets = LE_16(&buf[stream_ptr]);
+ line_packets = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
if (line_packets < 0) {
line_packets = -line_packets;
byte_run = (signed char)(buf[stream_ptr++]);
if (byte_run < 0) {
byte_run = -byte_run;
- pixel = LE_16(&buf[stream_ptr]);
+ pixel = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
CHECK_PIXEL_PTR(byte_run);
for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
} else {
CHECK_PIXEL_PTR(byte_run);
for (j = 0; j < byte_run; j++, pixel_countdown--) {
- *((signed short*)(&pixels[pixel_ptr])) = LE_16(&buf[stream_ptr]);
+ *((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
pixel_ptr += 2;
}
break;
case FLI_BLACK:
- /* set the whole frame to 0x0000 which is balck in both 15Bpp and 16Bpp modes. */
+ /* set the whole frame to 0x0000 which is black in both 15Bpp and 16Bpp modes. */
memset(pixels, 0x0000,
s->frame.linesize[0] * s->avctx->height);
break;
pixels[pixel_ptr++] = palette_idx1;
pixel_countdown--;
if (pixel_countdown < 0)
- av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
- pixel_countdown);
+ av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) (linea%d)\n",
+ pixel_countdown, lines);
}
} else { /* copy bytes if byte_run < 0 */
byte_run = -byte_run;
pixels[pixel_ptr++] = palette_idx1;
pixel_countdown--;
if (pixel_countdown < 0)
- av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
- pixel_countdown);
+ av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
+ pixel_countdown, lines);
}
}
}
/* Now FLX is strange, in that it is "byte" as opposed to "pixel" run length compressed.
- * This doesnt give us any good oportunity to perform word endian conversion
- * during decompression. So if its requried (ie, this isnt a LE target, we do
+ * This does not give us any good oportunity to perform word endian conversion
+ * 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 != LE_16(&pixel)) /* Check if its not an LE Target */
- {
- pixel_ptr = y_ptr;
- pixel_countdown = s->avctx->width;
- while (pixel_countdown > 0) {
- *((signed short*)(&pixels[pixel_ptr])) = LE_16(&buf[pixel_ptr]);
+#ifdef WORDS_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;
while (pixel_countdown > 0) {
byte_run = (signed char)(buf[stream_ptr++]);
if (byte_run > 0) {
- pixel = LE_16(&buf[stream_ptr]);
+ pixel = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
CHECK_PIXEL_PTR(byte_run);
for (j = 0; j < byte_run; j++) {
byte_run = -byte_run;
CHECK_PIXEL_PTR(byte_run);
for (j = 0; j < byte_run; j++) {
- *((signed short*)(&pixels[pixel_ptr])) = LE_16(&buf[stream_ptr]);
+ *((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;
pixel_ptr += 2;
pixel_countdown--;
pixel_countdown = s->avctx->width;
pixel_ptr = 0;
while (pixel_countdown > 0) {
- *((signed short*)(&pixels[y_ptr + pixel_ptr])) = LE_16(&buf[stream_ptr+pixel_ptr]);
+ *((signed short*)(&pixels[y_ptr + pixel_ptr])) = AV_RL16(&buf[stream_ptr+pixel_ptr]);
pixel_ptr += 2;
pixel_countdown--;
}
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)
+ const uint8_t *buf, int buf_size)
{
if (avctx->pix_fmt == PIX_FMT_PAL8) {
return flic_decode_frame_8BPP(avctx, data, data_size,
buf, buf_size);
}
- /* Shouldnt get here, ever as the pix_fmt is processed */
+ /* Should not get here, ever as the pix_fmt is processed */
/* in flic_decode_init and the above if should deal with */
/* the finite set of possibilites allowable by here. */
- /* but in case we do, just error out. */
- av_log(avctx, AV_LOG_ERROR, "Unknown Format of FLC. My Science cant explain how this happened\n");
+ /* But in case we do, just error out. */
+ av_log(avctx, AV_LOG_ERROR, "Unknown FLC format, my science cannot explain how this happened.\n");
return -1;
}
-static int flic_decode_end(AVCodecContext *avctx)
+static av_cold int flic_decode_end(AVCodecContext *avctx)
{
FlicDecodeContext *s = avctx->priv_data;
NULL,
NULL,
NULL,
- NULL
+ NULL,
+ .long_name = NULL_IF_CONFIG_SMALL("Autodesk Animator Flic video"),
};