#define ALT_BITSTREAM_READER_LE
#include "bitstream.h"
+#include "bytestream.h"
#define SMKTREE_BITS 9
#define SMK_NODE 0x80000000
return v;
}
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
+static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, const uint8_t *buf, int buf_size)
{
SmackVContext * const smk = avctx->priv_data;
uint8_t *out;
int i;
int stride;
- if(buf_size == 769)
+ if(buf_size <= 769)
return 0;
if(smk->pic.data[0])
avctx->release_buffer(avctx, &smk->pic);
}
/* make the palette available on the way out */
- out = buf + 1;
pal = (uint32_t*)smk->pic.data[1];
smk->pic.palette_has_changed = buf[0] & 1;
smk->pic.key_frame = !!(buf[0] & 2);
else
smk->pic.pict_type = FF_P_TYPE;
- for(i = 0; i < 256; i++) {
- int r, g, b;
- r = *out++;
- g = *out++;
- b = *out++;
- *pal++ = (r << 16) | (g << 8) | b;
- }
+ buf++;
+ for(i = 0; i < 256; i++)
+ *pal++ = bytestream_get_be24(&buf);
+ buf_size -= 769;
last_reset(smk->mmap_tbl, smk->mmap_last);
last_reset(smk->mclr_tbl, smk->mclr_last);
last_reset(smk->full_tbl, smk->full_last);
last_reset(smk->type_tbl, smk->type_last);
- init_get_bits(&gb, buf + 769, (buf_size - 769) * 8);
+ init_get_bits(&gb, buf, buf_size * 8);
blk = 0;
bw = avctx->width >> 2;
* Init smacker decoder
*
*/
-static int decode_init(AVCodecContext *avctx)
+static av_cold int decode_init(AVCodecContext *avctx)
{
SmackVContext * const c = avctx->priv_data;
* Uninit smacker decoder
*
*/
-static int decode_end(AVCodecContext *avctx)
+static av_cold int decode_end(AVCodecContext *avctx)
{
SmackVContext * const smk = avctx->priv_data;
}
-static int smka_decode_init(AVCodecContext *avctx)
+static av_cold int smka_decode_init(AVCodecContext *avctx)
{
return 0;
}
/**
* Decode Smacker audio data
*/
-static int smka_decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
+static int smka_decode_frame(AVCodecContext *avctx, void *data, int *data_size, const uint8_t *buf, int buf_size)
{
GetBitContext gb;
HuffContext h[4];
}
stereo = get_bits1(&gb);
bits = get_bits1(&gb);
+ if (unp_size & 0xC0000000 || (unp_size << !bits) > *data_size) {
+ av_log(avctx, AV_LOG_ERROR, "Frame is too large to fit in buffer\n");
+ return -1;
+ }
memset(vlc, 0, sizeof(VLC) * 4);
memset(h, 0, sizeof(HuffContext) * 4);
decode_init,
NULL,
decode_end,
- decode_frame
+ decode_frame,
+ .long_name = "Smacker video",
};
AVCodec smackaud_decoder = {
smka_decode_init,
NULL,
NULL,
- smka_decode_frame
+ smka_decode_frame,
+ .long_name = "Smacker audio",
};