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Code Issues Releases Wiki Activity

Update twolame to 0.3.13.

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This commit is contained in:
lllucius
2013-10-24 04:32:13 +00:00
parent 99acb56af6
commit 3effa9693f
124 changed files with 44671 additions and 44430 deletions
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85
lib-src/twolame/libtwolame/bitbuffer.c
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@@ -18,7 +18,7 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: bitbuffer.c,v 1.3 2008-02-01 19:44:27 richardash1981 Exp $
* $Id$
*
*/
@@ -33,82 +33,31 @@
/*create bit buffer*/
bit_stream* buffer_init( unsigned char *buffer, int buffer_size )
bit_stream *buffer_init(unsigned char *buffer, int buffer_size)
{
bit_stream* bs = (bit_stream *)TWOLAME_MALLOC( sizeof(bit_stream) );
bs->buf = buffer;
bs->buf_size = buffer_size;
bs->buf_byte_idx = 0;
bs->buf_bit_idx = 8;
bs->totbit = 0;
bs->eob = FALSE;
bs->eobs = FALSE;
return bs;
bit_stream *bs = (bit_stream *) TWOLAME_MALLOC(sizeof(bit_stream));
bs->buf = buffer;
bs->buf_size = buffer_size;
bs->buf_byte_idx = 0;
bs->buf_bit_idx = 8;
bs->totbit = 0;
bs->eob = FALSE;
bs->eobs = FALSE;
return bs;
}
/* Dellocate bit buffer */
void buffer_deinit( bit_stream **bs )
void buffer_deinit(bit_stream ** bs)
{
if (bs==NULL||*bs==NULL) return;
if (bs == NULL || *bs == NULL)
return;
TWOLAME_FREE( *bs );
TWOLAME_FREE(*bs);
}
/*write 1 bit from the bit stream */
void buffer_put1bit (bit_stream * bs, int bit)
{
bs->totbit++;
bs->buf[bs->buf_byte_idx] |= (bit & 0x1) << (bs->buf_bit_idx - 1);
bs->buf_bit_idx--;
if (!bs->buf_bit_idx) {
bs->buf_bit_idx = 8;
bs->buf_byte_idx++;
if (bs->buf_byte_idx >= bs->buf_size) {
//empty_buffer (bs, minimum);
fprintf(stdout,"buffer_put1bit: error. bit_stream buffer needs to be bigger\n");
exit(99);
}
bs->buf[bs->buf_byte_idx] = 0;
}
}
/*write N bits into the bit stream */
void buffer_putbits (bit_stream * bs, unsigned int val, int N)
{
static const int putmask[9] = { 0x0, 0x1, 0x3, 0x7, 0xf, 0x1f, 0x3f, 0x7f, 0xff };
register int j = N;
register int k, tmp;
bs->totbit += N;
while (j > 0) {
k = MIN (j, bs->buf_bit_idx);
tmp = val >> (j - k);
bs->buf[bs->buf_byte_idx] |= (tmp & putmask[k]) << (bs->buf_bit_idx - k);
bs->buf_bit_idx -= k;
if (!bs->buf_bit_idx) {
bs->buf_bit_idx = 8;
bs->buf_byte_idx++;
if (bs->buf_byte_idx >= bs->buf_size) {
//empty_buffer (bs, minimum);
fprintf(stdout,"buffer_putbits: error. bit_stream buffer needs to be bigger\n");
exit(99);
}
bs->buf[bs->buf_byte_idx] = 0;
}
j -= k;
}
}
/*return the current bit stream length (in bits)*/
unsigned long buffer_sstell (bit_stream * bs)
{
return (bs->totbit);
}
// vim:ts=4:sw=4:nowrap: