* 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.
*
* 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.
*
* 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
* 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-static inline void vp56_init_range_decoder(VP56RangeCoder *c,
- const uint8_t *buf, int buf_size)
-{
- c->high = 255;
- c->bits = -8;
- c->buffer = buf;
- c->end = buf + buf_size;
- c->code_word = bytestream_get_be16(&c->buffer);
-}
+extern const uint8_t ff_vp56_norm_shift[256];
+void ff_vp56_init_range_decoder(VP56RangeCoder *c, const uint8_t *buf, int buf_size);
// branchy variant, to be used where there's a branch based on the bit decoded
static av_always_inline int vp56_rac_get_prob_branchy(VP56RangeCoder *c, int prob)
{
unsigned long code_word = vp56_rac_renorm(c);
unsigned low = 1 + (((c->high - 1) * prob) >> 8);
// branchy variant, to be used where there's a branch based on the bit decoded
static av_always_inline int vp56_rac_get_prob_branchy(VP56RangeCoder *c, int prob)
{
unsigned long code_word = vp56_rac_renorm(c);
unsigned low = 1 + (((c->high - 1) * prob) >> 8);
static av_always_inline int vp56_rac_get(VP56RangeCoder *c)
{
unsigned int code_word = vp56_rac_renorm(c);
/* equiprobable */
int low = (c->high + 1) >> 1;
static av_always_inline int vp56_rac_get(VP56RangeCoder *c)
{
unsigned int code_word = vp56_rac_renorm(c);
/* equiprobable */
int low = (c->high + 1) >> 1;