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Original Commit: r31 | ods15 | 2006-09-22 18:33:17 +0300 (Fri, 22 Sep 2006) | 2 lines

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use my own bitpacker

Originally committed as revision 6440 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Oded Shimon 2006-10-02 05:56:10 +00:00
parent b4b6ff3a55
commit 22c72a08df
1 changed files with 48 additions and 2 deletions
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50
libavcodec/vorbis_enc.c
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@ -27,8 +27,8 @@
#undef NDEBUG
#include <assert.h>
#define ALT_BITSTREAM_WRITER
#include "bitstream.h"
//#define ALT_BITSTREAM_WRITER
//#include "bitstream.h"
typedef struct {
int len;
@ -108,6 +108,52 @@ typedef struct {
vorbis_mode_t * modes;
} venc_context_t;
typedef struct {
int total;
int total_pos;
int pos;
uint8_t * buf_ptr;
} PutBitContext;
static inline void init_put_bits(PutBitContext * pb, uint8_t * buf, int buffer_len) {
pb->total = buffer_len * 8;
pb->total_pos = 0;
pb->pos = 0;
pb->buf_ptr = buf;
}
static void put_bits(PutBitContext * pb, int bits, uint64_t val) {
if ((pb->total_pos += bits) >= pb->total) return;
if (!bits) return;
if (pb->pos) {
if (pb->pos > bits) {
*pb->buf_ptr |= val << (8 - pb->pos);
pb->pos -= bits;
bits = 0;
} else {
*pb->buf_ptr++ |= (val << (8 - pb->pos)) & 0xFF;
val >>= pb->pos;
bits -= pb->pos;
pb->pos = 0;
}
}
for (; bits >= 8; bits -= 8) {
*pb->buf_ptr++ = val & 0xFF;
val >>= 8;
}
if (bits) {
*pb->buf_ptr = val;
pb->pos = 8 - bits;
}
}
static inline void flush_put_bits(PutBitContext * pb) {
}
static inline int put_bits_count(PutBitContext * pb) {
return pb->total_pos;
}
static int cb_lookup_vals(int lookup, int dimentions, int entries) {
if (lookup == 1) {
int tmp, i;