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split wmv2 encoder and decoder in their own files 

Originally committed as revision 11091 to svn://svn.ffmpeg.org/ffmpeg/trunk
tags/v0.5
Aurelien Jacobs 18 years ago
parent
ac40ce4244
commit
4d4f59d750
5 changed files with 789 additions and 716 deletions
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  1. +2
    -2
      libavcodec/Makefile
  2. +2
    -714
      libavcodec/wmv2.c
  3. +58
    -0
      libavcodec/wmv2.h
  4. +487
    -0
      libavcodec/wmv2dec.c
  5. +240
    -0
      libavcodec/wmv2enc.c

+ 2
- 2
libavcodec/Makefile View File

@@ -210,8 +210,8 @@ OBJS-$(CONFIG_WMAV1_ENCODER) += wmaenc.o wma.o mdct.o fft.o
OBJS-$(CONFIG_WMAV2_ENCODER) += wmaenc.o wma.o mdct.o fft.o OBJS-$(CONFIG_WMAV2_ENCODER) += wmaenc.o wma.o mdct.o fft.o
OBJS-$(CONFIG_WMV1_DECODER) += h263dec.o h263.o OBJS-$(CONFIG_WMV1_DECODER) += h263dec.o h263.o
OBJS-$(CONFIG_WMV1_ENCODER) += mpegvideo_enc.o motion_est.o ratecontrol.o h263.o OBJS-$(CONFIG_WMV1_ENCODER) += mpegvideo_enc.o motion_est.o ratecontrol.o h263.o
OBJS-$(CONFIG_WMV2_DECODER) += wmv2.o msmpeg4.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o
OBJS-$(CONFIG_WMV2_ENCODER) += wmv2.o msmpeg4.o msmpeg4data.o mpegvideo_enc.o motion_est.o ratecontrol.o h263.o intrax8.o intrax8dsp.o
OBJS-$(CONFIG_WMV2_DECODER) += wmv2dec.o wmv2.o msmpeg4.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o
OBJS-$(CONFIG_WMV2_ENCODER) += wmv2enc.o wmv2.o msmpeg4.o msmpeg4data.o mpegvideo_enc.o motion_est.o ratecontrol.o h263.o
OBJS-$(CONFIG_WMV3_DECODER) += vc1.o vc1data.o vc1dsp.o OBJS-$(CONFIG_WMV3_DECODER) += vc1.o vc1data.o vc1dsp.o
OBJS-$(CONFIG_WNV1_DECODER) += wnv1.o OBJS-$(CONFIG_WNV1_DECODER) += wnv1.o
OBJS-$(CONFIG_WS_SND1_DECODER) += ws-snd1.o OBJS-$(CONFIG_WS_SND1_DECODER) += ws-snd1.o


+ 2
- 714
libavcodec/wmv2.c View File

@@ -18,576 +18,20 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/ */


/**
* @file wmv2.c
* wmv2 codec.
*/

#include "avcodec.h" #include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h" #include "mpegvideo.h"
#include "msmpeg4.h"
#include "msmpeg4data.h" #include "msmpeg4data.h"
#include "simple_idct.h" #include "simple_idct.h"
#include "intrax8.h"

#define SKIP_TYPE_NONE 0
#define SKIP_TYPE_MPEG 1
#define SKIP_TYPE_ROW 2
#define SKIP_TYPE_COL 3

#include "wmv2.h"


typedef struct Wmv2Context{
MpegEncContext s;
IntraX8Context x8;
int j_type_bit;
int j_type;
int abt_flag;
int abt_type;
int abt_type_table[6];
int per_mb_abt;
int per_block_abt;
int mspel_bit;
int cbp_table_index;
int top_left_mv_flag;
int per_mb_rl_bit;
int skip_type;
int hshift;


ScanTable abt_scantable[2];
DECLARE_ALIGNED_8(DCTELEM, abt_block2[6][64]);
}Wmv2Context;

static void wmv2_common_init(Wmv2Context * w){
void ff_wmv2_common_init(Wmv2Context * w){
MpegEncContext * const s= &w->s; MpegEncContext * const s= &w->s;


ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[0], wmv2_scantableA); ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[0], wmv2_scantableA);
ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[1], wmv2_scantableB); ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[1], wmv2_scantableB);
} }


#ifdef CONFIG_WMV2_ENCODER

static int encode_ext_header(Wmv2Context *w){
MpegEncContext * const s= &w->s;
PutBitContext pb;
int code;

init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size);

put_bits(&pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); //yes 29.97 -> 29
put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));

put_bits(&pb, 1, w->mspel_bit=1);
put_bits(&pb, 1, s->loop_filter);
put_bits(&pb, 1, w->abt_flag=1);
put_bits(&pb, 1, w->j_type_bit=1);
put_bits(&pb, 1, w->top_left_mv_flag=0);
put_bits(&pb, 1, w->per_mb_rl_bit=1);
put_bits(&pb, 3, code=1);

flush_put_bits(&pb);

s->slice_height = s->mb_height / code;

return 0;
}

static int wmv2_encode_init(AVCodecContext *avctx){
Wmv2Context * const w= avctx->priv_data;

if(MPV_encode_init(avctx) < 0)
return -1;

wmv2_common_init(w);

avctx->extradata_size= 4;
avctx->extradata= av_mallocz(avctx->extradata_size + 10);
encode_ext_header(w);

return 0;
}

#if 0 /* unused, remove? */
static int wmv2_encode_end(AVCodecContext *avctx){

if(MPV_encode_end(avctx) < 0)
return -1;

avctx->extradata_size= 0;
av_freep(&avctx->extradata);

return 0;
}
#endif

int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
{
Wmv2Context * const w= (Wmv2Context*)s;

put_bits(&s->pb, 1, s->pict_type - 1);
if(s->pict_type == I_TYPE){
put_bits(&s->pb, 7, 0);
}
put_bits(&s->pb, 5, s->qscale);

s->dc_table_index = 1;
s->mv_table_index = 1; /* only if P frame */
// s->use_skip_mb_code = 1; /* only if P frame */
s->per_mb_rl_table = 0;
s->mspel= 0;
w->per_mb_abt=0;
w->abt_type=0;
w->j_type=0;

assert(s->flipflop_rounding);

if (s->pict_type == I_TYPE) {
assert(s->no_rounding==1);
if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);

if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);

if(!s->per_mb_rl_table){
ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
ff_msmpeg4_code012(&s->pb, s->rl_table_index);
}

put_bits(&s->pb, 1, s->dc_table_index);

s->inter_intra_pred= 0;
}else{
int cbp_index;

put_bits(&s->pb, 2, SKIP_TYPE_NONE);

ff_msmpeg4_code012(&s->pb, cbp_index=0);
if(s->qscale <= 10){
int map[3]= {0,2,1};
w->cbp_table_index= map[cbp_index];
}else if(s->qscale <= 20){
int map[3]= {1,0,2};
w->cbp_table_index= map[cbp_index];
}else{
int map[3]= {2,1,0};
w->cbp_table_index= map[cbp_index];
}

if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);

if(w->abt_flag){
put_bits(&s->pb, 1, w->per_mb_abt^1);
if(!w->per_mb_abt){
ff_msmpeg4_code012(&s->pb, w->abt_type);
}
}

if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);

if(!s->per_mb_rl_table){
ff_msmpeg4_code012(&s->pb, s->rl_table_index);
s->rl_chroma_table_index = s->rl_table_index;
}
put_bits(&s->pb, 1, s->dc_table_index);
put_bits(&s->pb, 1, s->mv_table_index);

s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
}
s->esc3_level_length= 0;
s->esc3_run_length= 0;

return 0;
}

/* Nearly identical to wmv1 but that is just because we do not use the
* useless M$ crap features. It is duplicated here in case someone wants
* to add support for these crap features. */
void ff_wmv2_encode_mb(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y)
{
Wmv2Context * const w= (Wmv2Context*)s;
int cbp, coded_cbp, i;
int pred_x, pred_y;
uint8_t *coded_block;

ff_msmpeg4_handle_slices(s);

if (!s->mb_intra) {
/* compute cbp */
cbp = 0;
for (i = 0; i < 6; i++) {
if (s->block_last_index[i] >= 0)
cbp |= 1 << (5 - i);
}

put_bits(&s->pb,
wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);

/* motion vector */
h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
ff_msmpeg4_encode_motion(s, motion_x - pred_x,
motion_y - pred_y);
} else {
/* compute cbp */
cbp = 0;
coded_cbp = 0;
for (i = 0; i < 6; i++) {
int val, pred;
val = (s->block_last_index[i] >= 1);
cbp |= val << (5 - i);
if (i < 4) {
/* predict value for close blocks only for luma */
pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
*coded_block = val;
val = val ^ pred;
}
coded_cbp |= val << (5 - i);
}
#if 0
if (coded_cbp)
printf("cbp=%x %x\n", cbp, coded_cbp);
#endif

if (s->pict_type == I_TYPE) {
put_bits(&s->pb,
ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
} else {
put_bits(&s->pb,
wmv2_inter_table[w->cbp_table_index][cbp][1],
wmv2_inter_table[w->cbp_table_index][cbp][0]);
}
put_bits(&s->pb, 1, 0); /* no AC prediction yet */
if(s->inter_intra_pred){
s->h263_aic_dir=0;
put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
}
}

for (i = 0; i < 6; i++) {
ff_msmpeg4_encode_block(s, block[i], i);
}
}
#endif //CONFIG_WMV2_ENCODER

static void parse_mb_skip(Wmv2Context * w){
int mb_x, mb_y;
MpegEncContext * const s= &w->s;
uint32_t * const mb_type= s->current_picture_ptr->mb_type;

w->skip_type= get_bits(&s->gb, 2);
switch(w->skip_type){
case SKIP_TYPE_NONE:
for(mb_y=0; mb_y<s->mb_height; mb_y++){
for(mb_x=0; mb_x<s->mb_width; mb_x++){
mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_16x16 | MB_TYPE_L0;
}
}
break;
case SKIP_TYPE_MPEG:
for(mb_y=0; mb_y<s->mb_height; mb_y++){
for(mb_x=0; mb_x<s->mb_width; mb_x++){
mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
}
}
break;
case SKIP_TYPE_ROW:
for(mb_y=0; mb_y<s->mb_height; mb_y++){
if(get_bits1(&s->gb)){
for(mb_x=0; mb_x<s->mb_width; mb_x++){
mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
}
}else{
for(mb_x=0; mb_x<s->mb_width; mb_x++){
mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
}
}
}
break;
case SKIP_TYPE_COL:
for(mb_x=0; mb_x<s->mb_width; mb_x++){
if(get_bits1(&s->gb)){
for(mb_y=0; mb_y<s->mb_height; mb_y++){
mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
}
}else{
for(mb_y=0; mb_y<s->mb_height; mb_y++){
mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
}
}
}
break;
}
}

static int decode_ext_header(Wmv2Context *w){
MpegEncContext * const s= &w->s;
GetBitContext gb;
int fps;
int code;

if(s->avctx->extradata_size<4) return -1;

init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);

fps = get_bits(&gb, 5);
s->bit_rate = get_bits(&gb, 11)*1024;
w->mspel_bit = get_bits1(&gb);
s->loop_filter = get_bits1(&gb);
w->abt_flag = get_bits1(&gb);
w->j_type_bit = get_bits1(&gb);
w->top_left_mv_flag= get_bits1(&gb);
w->per_mb_rl_bit = get_bits1(&gb);
code = get_bits(&gb, 3);

if(code==0) return -1;

s->slice_height = s->mb_height / code;

if(s->avctx->debug&FF_DEBUG_PICT_INFO){
av_log(s->avctx, AV_LOG_DEBUG, "fps:%d, br:%d, qpbit:%d, abt_flag:%d, j_type_bit:%d, tl_mv_flag:%d, mbrl_bit:%d, code:%d, loop_filter:%d, slices:%d\n",
fps, s->bit_rate, w->mspel_bit, w->abt_flag, w->j_type_bit, w->top_left_mv_flag, w->per_mb_rl_bit, code, s->loop_filter,
code);
}
return 0;
}

int ff_wmv2_decode_picture_header(MpegEncContext * s)
{
Wmv2Context * const w= (Wmv2Context*)s;
int code;

#if 0
{
int i;
for(i=0; i<s->gb.size*8; i++)
printf("%d", get_bits1(&s->gb));
// get_bits1(&s->gb);
printf("END\n");
return -1;
}
#endif
if(s->picture_number==0)
decode_ext_header(w);

s->pict_type = get_bits1(&s->gb) + 1;
if(s->pict_type == I_TYPE){
code = get_bits(&s->gb, 7);
av_log(s->avctx, AV_LOG_DEBUG, "I7:%X/\n", code);
}
s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
if(s->qscale < 0)
return -1;

return 0;
}

int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s)
{
Wmv2Context * const w= (Wmv2Context*)s;

if (s->pict_type == I_TYPE) {
if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
else w->j_type= 0; //FIXME check

if(!w->j_type){
if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
else s->per_mb_rl_table= 0;

if(!s->per_mb_rl_table){
s->rl_chroma_table_index = decode012(&s->gb);
s->rl_table_index = decode012(&s->gb);
}

s->dc_table_index = get_bits1(&s->gb);
}
s->inter_intra_pred= 0;
s->no_rounding = 1;
if(s->avctx->debug&FF_DEBUG_PICT_INFO){
av_log(s->avctx, AV_LOG_DEBUG, "qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
s->qscale,
s->rl_chroma_table_index,
s->rl_table_index,
s->dc_table_index,
s->per_mb_rl_table,
w->j_type);
}
}else{
int cbp_index;
w->j_type=0;

parse_mb_skip(w);
cbp_index= decode012(&s->gb);
if(s->qscale <= 10){
int map[3]= {0,2,1};
w->cbp_table_index= map[cbp_index];
}else if(s->qscale <= 20){
int map[3]= {1,0,2};
w->cbp_table_index= map[cbp_index];
}else{
int map[3]= {2,1,0};
w->cbp_table_index= map[cbp_index];
}

if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
else s->mspel= 0; //FIXME check

if(w->abt_flag){
w->per_mb_abt= get_bits1(&s->gb)^1;
if(!w->per_mb_abt){
w->abt_type= decode012(&s->gb);
}
}

if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
else s->per_mb_rl_table= 0;

if(!s->per_mb_rl_table){
s->rl_table_index = decode012(&s->gb);
s->rl_chroma_table_index = s->rl_table_index;
}

s->dc_table_index = get_bits1(&s->gb);
s->mv_table_index = get_bits1(&s->gb);

s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
s->no_rounding ^= 1;

if(s->avctx->debug&FF_DEBUG_PICT_INFO){
av_log(s->avctx, AV_LOG_DEBUG, "rl:%d rlc:%d dc:%d mv:%d mbrl:%d qp:%d mspel:%d per_mb_abt:%d abt_type:%d cbp:%d ii:%d\n",
s->rl_table_index,
s->rl_chroma_table_index,
s->dc_table_index,
s->mv_table_index,
s->per_mb_rl_table,
s->qscale,
s->mspel,
w->per_mb_abt,
w->abt_type,
w->cbp_table_index,
s->inter_intra_pred);
}
}
s->esc3_level_length= 0;
s->esc3_run_length= 0;

s->picture_number++; //FIXME ?


if(w->j_type){
ff_intrax8_decode_picture(&w->x8, 2*s->qscale, (s->qscale-1)|1 );
return 1;
}

return 0;
}

static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
MpegEncContext * const s= &w->s;
int ret;

ret= ff_msmpeg4_decode_motion(s, mx_ptr, my_ptr);

if(ret<0) return -1;

if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
w->hshift= get_bits1(&s->gb);
else
w->hshift= 0;

//printf("%d %d ", *mx_ptr, *my_ptr);

return 0;
}

static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
MpegEncContext * const s= &w->s;
int xy, wrap, diff, type;
int16_t *A, *B, *C, *mot_val;

wrap = s->b8_stride;
xy = s->block_index[0];

mot_val = s->current_picture.motion_val[0][xy];

A = s->current_picture.motion_val[0][xy - 1];
B = s->current_picture.motion_val[0][xy - wrap];
C = s->current_picture.motion_val[0][xy + 2 - wrap];

if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag)
diff= FFMAX(FFABS(A[0] - B[0]), FFABS(A[1] - B[1]));
else
diff=0;

if(diff >= 8)
type= get_bits1(&s->gb);
else
type= 2;

if(type == 0){
*px= A[0];
*py= A[1];
}else if(type == 1){
*px= B[0];
*py= B[1];
}else{
/* special case for first (slice) line */
if (s->first_slice_line) {
*px = A[0];
*py = A[1];
} else {
*px = mid_pred(A[0], B[0], C[0]);
*py = mid_pred(A[1], B[1], C[1]);
}
}

return mot_val;
}

static inline int wmv2_decode_inter_block(Wmv2Context *w, DCTELEM *block, int n, int cbp){
MpegEncContext * const s= &w->s;
static const int sub_cbp_table[3]= {2,3,1};
int sub_cbp;

if(!cbp){
s->block_last_index[n] = -1;

return 0;
}

if(w->per_block_abt)
w->abt_type= decode012(&s->gb);
#if 0
if(w->per_block_abt)
printf("B%d", w->abt_type);
#endif
w->abt_type_table[n]= w->abt_type;

if(w->abt_type){
// const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
// const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;

sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
// printf("S%d", sub_cbp);

if(sub_cbp&1){
if (ff_msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
return -1;
}

if(sub_cbp&2){
if (ff_msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
return -1;
}
s->block_last_index[n] = 63;

return 0;
}else{
return ff_msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
}
}

static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){ static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
MpegEncContext * const s= &w->s; MpegEncContext * const s= &w->s;


@@ -713,159 +157,3 @@ void ff_mspel_motion(MpegEncContext *s,
} }
pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1); pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
} }


int ff_wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
{
Wmv2Context * const w= (Wmv2Context*)s;
int cbp, code, i;
uint8_t *coded_val;

if(w->j_type) return 0;

if (s->pict_type == P_TYPE) {
if(IS_SKIP(s->current_picture.mb_type[s->mb_y * s->mb_stride + s->mb_x])){
/* skip mb */
s->mb_intra = 0;
for(i=0;i<6;i++)
s->block_last_index[i] = -1;
s->mv_dir = MV_DIR_FORWARD;
s->mv_type = MV_TYPE_16X16;
s->mv[0][0][0] = 0;
s->mv[0][0][1] = 0;
s->mb_skipped = 1;
w->hshift=0;
return 0;
}

code = get_vlc2(&s->gb, ff_mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
if (code < 0)
return -1;
s->mb_intra = (~code & 0x40) >> 6;

cbp = code & 0x3f;
} else {
s->mb_intra = 1;
code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
if (code < 0){
av_log(s->avctx, AV_LOG_ERROR, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
/* predict coded block pattern */
cbp = 0;
for(i=0;i<6;i++) {
int val = ((code >> (5 - i)) & 1);
if (i < 4) {
int pred = ff_msmpeg4_coded_block_pred(s, i, &coded_val);
val = val ^ pred;
*coded_val = val;
}
cbp |= val << (5 - i);
}
}

if (!s->mb_intra) {
int mx, my;
//printf("P at %d %d\n", s->mb_x, s->mb_y);
wmv2_pred_motion(w, &mx, &my);

if(cbp){
s->dsp.clear_blocks(s->block[0]);
if(s->per_mb_rl_table){
s->rl_table_index = decode012(&s->gb);
s->rl_chroma_table_index = s->rl_table_index;
}

if(w->abt_flag && w->per_mb_abt){
w->per_block_abt= get_bits1(&s->gb);
if(!w->per_block_abt)
w->abt_type= decode012(&s->gb);
}else
w->per_block_abt=0;
}

if (wmv2_decode_motion(w, &mx, &my) < 0)
return -1;

s->mv_dir = MV_DIR_FORWARD;
s->mv_type = MV_TYPE_16X16;
s->mv[0][0][0] = mx;
s->mv[0][0][1] = my;

for (i = 0; i < 6; i++) {
if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
{
av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
return -1;
}
}
} else {
//if(s->pict_type==P_TYPE)
// printf("%d%d ", s->inter_intra_pred, cbp);
//printf("I at %d %d %d %06X\n", s->mb_x, s->mb_y, ((cbp&3)? 1 : 0) +((cbp&0x3C)? 2 : 0), show_bits(&s->gb, 24));
s->ac_pred = get_bits1(&s->gb);
if(s->inter_intra_pred){
s->h263_aic_dir= get_vlc2(&s->gb, ff_inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
// printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
}
if(s->per_mb_rl_table && cbp){
s->rl_table_index = decode012(&s->gb);
s->rl_chroma_table_index = s->rl_table_index;
}

s->dsp.clear_blocks(s->block[0]);
for (i = 0; i < 6; i++) {
if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
{
av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
return -1;
}
}
}

return 0;
}

static int wmv2_decode_init(AVCodecContext *avctx){
Wmv2Context * const w= avctx->priv_data;

if(avctx->idct_algo==FF_IDCT_AUTO){
avctx->idct_algo=FF_IDCT_WMV2;
}

if(ff_h263_decode_init(avctx) < 0)
return -1;

wmv2_common_init(w);

ff_intrax8_common_init(&w->x8,&w->s);

return 0;
}

#ifdef CONFIG_WMV2_DECODER
AVCodec wmv2_decoder = {
"wmv2",
CODEC_TYPE_VIDEO,
CODEC_ID_WMV2,
sizeof(Wmv2Context),
wmv2_decode_init,
NULL,
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
};
#endif

#ifdef CONFIG_WMV2_ENCODER
AVCodec wmv2_encoder = {
"wmv2",
CODEC_TYPE_VIDEO,
CODEC_ID_WMV2,
sizeof(Wmv2Context),
wmv2_encode_init,
MPV_encode_picture,
MPV_encode_end,
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
};
#endif

+ 58
- 0
libavcodec/wmv2.h View File

@@ -0,0 +1,58 @@
/*
* Copyright (c) 2002 The FFmpeg Project.
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* 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.
*
* FFmpeg is distributed in the hope that it will be useful,
* 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#ifndef FFMPEG_WMV2_H
#define FFMPEG_WMV2_H

#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "intrax8.h"

#define SKIP_TYPE_NONE 0
#define SKIP_TYPE_MPEG 1
#define SKIP_TYPE_ROW 2
#define SKIP_TYPE_COL 3


typedef struct Wmv2Context{
MpegEncContext s;
IntraX8Context x8;
int j_type_bit;
int j_type;
int abt_flag;
int abt_type;
int abt_type_table[6];
int per_mb_abt;
int per_block_abt;
int mspel_bit;
int cbp_table_index;
int top_left_mv_flag;
int per_mb_rl_bit;
int skip_type;
int hshift;

ScanTable abt_scantable[2];
DECLARE_ALIGNED_8(DCTELEM, abt_block2[6][64]);
}Wmv2Context;

void ff_wmv2_common_init(Wmv2Context * w);

#endif /* FFMPEG_WMV2_H */

+ 487
- 0
libavcodec/wmv2dec.c View File

@@ -0,0 +1,487 @@
/*
* Copyright (c) 2002 The FFmpeg Project.
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* 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.
*
* FFmpeg is distributed in the hope that it will be useful,
* 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "msmpeg4.h"
#include "msmpeg4data.h"
#include "intrax8.h"
#include "wmv2.h"


static void parse_mb_skip(Wmv2Context * w){
int mb_x, mb_y;
MpegEncContext * const s= &w->s;
uint32_t * const mb_type= s->current_picture_ptr->mb_type;

w->skip_type= get_bits(&s->gb, 2);
switch(w->skip_type){
case SKIP_TYPE_NONE:
for(mb_y=0; mb_y<s->mb_height; mb_y++){
for(mb_x=0; mb_x<s->mb_width; mb_x++){
mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_16x16 | MB_TYPE_L0;
}
}
break;
case SKIP_TYPE_MPEG:
for(mb_y=0; mb_y<s->mb_height; mb_y++){
for(mb_x=0; mb_x<s->mb_width; mb_x++){
mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
}
}
break;
case SKIP_TYPE_ROW:
for(mb_y=0; mb_y<s->mb_height; mb_y++){
if(get_bits1(&s->gb)){
for(mb_x=0; mb_x<s->mb_width; mb_x++){
mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
}
}else{
for(mb_x=0; mb_x<s->mb_width; mb_x++){
mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
}
}
}
break;
case SKIP_TYPE_COL:
for(mb_x=0; mb_x<s->mb_width; mb_x++){
if(get_bits1(&s->gb)){
for(mb_y=0; mb_y<s->mb_height; mb_y++){
mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
}
}else{
for(mb_y=0; mb_y<s->mb_height; mb_y++){
mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
}
}
}
break;
}
}

static int decode_ext_header(Wmv2Context *w){
MpegEncContext * const s= &w->s;
GetBitContext gb;
int fps;
int code;

if(s->avctx->extradata_size<4) return -1;

init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);

fps = get_bits(&gb, 5);
s->bit_rate = get_bits(&gb, 11)*1024;
w->mspel_bit = get_bits1(&gb);
s->loop_filter = get_bits1(&gb);
w->abt_flag = get_bits1(&gb);
w->j_type_bit = get_bits1(&gb);
w->top_left_mv_flag= get_bits1(&gb);
w->per_mb_rl_bit = get_bits1(&gb);
code = get_bits(&gb, 3);

if(code==0) return -1;

s->slice_height = s->mb_height / code;

if(s->avctx->debug&FF_DEBUG_PICT_INFO){
av_log(s->avctx, AV_LOG_DEBUG, "fps:%d, br:%d, qpbit:%d, abt_flag:%d, j_type_bit:%d, tl_mv_flag:%d, mbrl_bit:%d, code:%d, loop_filter:%d, slices:%d\n",
fps, s->bit_rate, w->mspel_bit, w->abt_flag, w->j_type_bit, w->top_left_mv_flag, w->per_mb_rl_bit, code, s->loop_filter,
code);
}
return 0;
}

int ff_wmv2_decode_picture_header(MpegEncContext * s)
{
Wmv2Context * const w= (Wmv2Context*)s;
int code;

#if 0
{
int i;
for(i=0; i<s->gb.size*8; i++)
printf("%d", get_bits1(&s->gb));
// get_bits1(&s->gb);
printf("END\n");
return -1;
}
#endif
if(s->picture_number==0)
decode_ext_header(w);

s->pict_type = get_bits1(&s->gb) + 1;
if(s->pict_type == I_TYPE){
code = get_bits(&s->gb, 7);
av_log(s->avctx, AV_LOG_DEBUG, "I7:%X/\n", code);
}
s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
if(s->qscale < 0)
return -1;

return 0;
}

int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s)
{
Wmv2Context * const w= (Wmv2Context*)s;

if (s->pict_type == I_TYPE) {
if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
else w->j_type= 0; //FIXME check

if(!w->j_type){
if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
else s->per_mb_rl_table= 0;

if(!s->per_mb_rl_table){
s->rl_chroma_table_index = decode012(&s->gb);
s->rl_table_index = decode012(&s->gb);
}

s->dc_table_index = get_bits1(&s->gb);
}
s->inter_intra_pred= 0;
s->no_rounding = 1;
if(s->avctx->debug&FF_DEBUG_PICT_INFO){
av_log(s->avctx, AV_LOG_DEBUG, "qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
s->qscale,
s->rl_chroma_table_index,
s->rl_table_index,
s->dc_table_index,
s->per_mb_rl_table,
w->j_type);
}
}else{
int cbp_index;
w->j_type=0;

parse_mb_skip(w);
cbp_index= decode012(&s->gb);
if(s->qscale <= 10){
int map[3]= {0,2,1};
w->cbp_table_index= map[cbp_index];
}else if(s->qscale <= 20){
int map[3]= {1,0,2};
w->cbp_table_index= map[cbp_index];
}else{
int map[3]= {2,1,0};
w->cbp_table_index= map[cbp_index];
}

if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
else s->mspel= 0; //FIXME check

if(w->abt_flag){
w->per_mb_abt= get_bits1(&s->gb)^1;
if(!w->per_mb_abt){
w->abt_type= decode012(&s->gb);
}
}

if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
else s->per_mb_rl_table= 0;

if(!s->per_mb_rl_table){
s->rl_table_index = decode012(&s->gb);
s->rl_chroma_table_index = s->rl_table_index;
}

s->dc_table_index = get_bits1(&s->gb);
s->mv_table_index = get_bits1(&s->gb);

s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
s->no_rounding ^= 1;

if(s->avctx->debug&FF_DEBUG_PICT_INFO){
av_log(s->avctx, AV_LOG_DEBUG, "rl:%d rlc:%d dc:%d mv:%d mbrl:%d qp:%d mspel:%d per_mb_abt:%d abt_type:%d cbp:%d ii:%d\n",
s->rl_table_index,
s->rl_chroma_table_index,
s->dc_table_index,
s->mv_table_index,
s->per_mb_rl_table,
s->qscale,
s->mspel,
w->per_mb_abt,
w->abt_type,
w->cbp_table_index,
s->inter_intra_pred);
}
}
s->esc3_level_length= 0;
s->esc3_run_length= 0;

s->picture_number++; //FIXME ?


if(w->j_type){
ff_intrax8_decode_picture(&w->x8, 2*s->qscale, (s->qscale-1)|1 );
return 1;
}

return 0;
}

static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
MpegEncContext * const s= &w->s;
int ret;

ret= ff_msmpeg4_decode_motion(s, mx_ptr, my_ptr);

if(ret<0) return -1;

if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
w->hshift= get_bits1(&s->gb);
else
w->hshift= 0;

//printf("%d %d ", *mx_ptr, *my_ptr);

return 0;
}

static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
MpegEncContext * const s= &w->s;
int xy, wrap, diff, type;
int16_t *A, *B, *C, *mot_val;

wrap = s->b8_stride;
xy = s->block_index[0];

mot_val = s->current_picture.motion_val[0][xy];

A = s->current_picture.motion_val[0][xy - 1];
B = s->current_picture.motion_val[0][xy - wrap];
C = s->current_picture.motion_val[0][xy + 2 - wrap];

if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag)
diff= FFMAX(FFABS(A[0] - B[0]), FFABS(A[1] - B[1]));
else
diff=0;

if(diff >= 8)
type= get_bits1(&s->gb);
else
type= 2;

if(type == 0){
*px= A[0];
*py= A[1];
}else if(type == 1){
*px= B[0];
*py= B[1];
}else{
/* special case for first (slice) line */
if (s->first_slice_line) {
*px = A[0];
*py = A[1];
} else {
*px = mid_pred(A[0], B[0], C[0]);
*py = mid_pred(A[1], B[1], C[1]);
}
}

return mot_val;
}

static inline int wmv2_decode_inter_block(Wmv2Context *w, DCTELEM *block, int n, int cbp){
MpegEncContext * const s= &w->s;
static const int sub_cbp_table[3]= {2,3,1};
int sub_cbp;

if(!cbp){
s->block_last_index[n] = -1;

return 0;
}

if(w->per_block_abt)
w->abt_type= decode012(&s->gb);
#if 0
if(w->per_block_abt)
printf("B%d", w->abt_type);
#endif
w->abt_type_table[n]= w->abt_type;

if(w->abt_type){
// const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
// const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;

sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
// printf("S%d", sub_cbp);

if(sub_cbp&1){
if (ff_msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
return -1;
}

if(sub_cbp&2){
if (ff_msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
return -1;
}
s->block_last_index[n] = 63;

return 0;
}else{
return ff_msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
}
}


int ff_wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
{
Wmv2Context * const w= (Wmv2Context*)s;
int cbp, code, i;
uint8_t *coded_val;

if(w->j_type) return 0;

if (s->pict_type == P_TYPE) {
if(IS_SKIP(s->current_picture.mb_type[s->mb_y * s->mb_stride + s->mb_x])){
/* skip mb */
s->mb_intra = 0;
for(i=0;i<6;i++)
s->block_last_index[i] = -1;
s->mv_dir = MV_DIR_FORWARD;
s->mv_type = MV_TYPE_16X16;
s->mv[0][0][0] = 0;
s->mv[0][0][1] = 0;
s->mb_skipped = 1;
w->hshift=0;
return 0;
}

code = get_vlc2(&s->gb, ff_mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
if (code < 0)
return -1;
s->mb_intra = (~code & 0x40) >> 6;

cbp = code & 0x3f;
} else {
s->mb_intra = 1;
code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
if (code < 0){
av_log(s->avctx, AV_LOG_ERROR, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
/* predict coded block pattern */
cbp = 0;
for(i=0;i<6;i++) {
int val = ((code >> (5 - i)) & 1);
if (i < 4) {
int pred = ff_msmpeg4_coded_block_pred(s, i, &coded_val);
val = val ^ pred;
*coded_val = val;
}
cbp |= val << (5 - i);
}
}

if (!s->mb_intra) {
int mx, my;
//printf("P at %d %d\n", s->mb_x, s->mb_y);
wmv2_pred_motion(w, &mx, &my);

if(cbp){
s->dsp.clear_blocks(s->block[0]);
if(s->per_mb_rl_table){
s->rl_table_index = decode012(&s->gb);
s->rl_chroma_table_index = s->rl_table_index;
}

if(w->abt_flag && w->per_mb_abt){
w->per_block_abt= get_bits1(&s->gb);
if(!w->per_block_abt)
w->abt_type= decode012(&s->gb);
}else
w->per_block_abt=0;
}

if (wmv2_decode_motion(w, &mx, &my) < 0)
return -1;

s->mv_dir = MV_DIR_FORWARD;
s->mv_type = MV_TYPE_16X16;
s->mv[0][0][0] = mx;
s->mv[0][0][1] = my;

for (i = 0; i < 6; i++) {
if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
{
av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
return -1;
}
}
} else {
//if(s->pict_type==P_TYPE)
// printf("%d%d ", s->inter_intra_pred, cbp);
//printf("I at %d %d %d %06X\n", s->mb_x, s->mb_y, ((cbp&3)? 1 : 0) +((cbp&0x3C)? 2 : 0), show_bits(&s->gb, 24));
s->ac_pred = get_bits1(&s->gb);
if(s->inter_intra_pred){
s->h263_aic_dir= get_vlc2(&s->gb, ff_inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
// printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
}
if(s->per_mb_rl_table && cbp){
s->rl_table_index = decode012(&s->gb);
s->rl_chroma_table_index = s->rl_table_index;
}

s->dsp.clear_blocks(s->block[0]);
for (i = 0; i < 6; i++) {
if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
{
av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
return -1;
}
}
}

return 0;
}

static int wmv2_decode_init(AVCodecContext *avctx){
Wmv2Context * const w= avctx->priv_data;

if(avctx->idct_algo==FF_IDCT_AUTO){
avctx->idct_algo=FF_IDCT_WMV2;
}

if(ff_h263_decode_init(avctx) < 0)
return -1;

ff_wmv2_common_init(w);

ff_intrax8_common_init(&w->x8,&w->s);

return 0;
}

AVCodec wmv2_decoder = {
"wmv2",
CODEC_TYPE_VIDEO,
CODEC_ID_WMV2,
sizeof(Wmv2Context),
wmv2_decode_init,
NULL,
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
};

+ 240
- 0
libavcodec/wmv2enc.c View File

@@ -0,0 +1,240 @@
/*
* Copyright (c) 2002 The FFmpeg Project.
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* 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.
*
* FFmpeg is distributed in the hope that it will be useful,
* 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "msmpeg4.h"
#include "msmpeg4data.h"
#include "wmv2.h"


static int encode_ext_header(Wmv2Context *w){
MpegEncContext * const s= &w->s;
PutBitContext pb;
int code;

init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size);

put_bits(&pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); //yes 29.97 -> 29
put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));

put_bits(&pb, 1, w->mspel_bit=1);
put_bits(&pb, 1, s->loop_filter);
put_bits(&pb, 1, w->abt_flag=1);
put_bits(&pb, 1, w->j_type_bit=1);
put_bits(&pb, 1, w->top_left_mv_flag=0);
put_bits(&pb, 1, w->per_mb_rl_bit=1);
put_bits(&pb, 3, code=1);

flush_put_bits(&pb);

s->slice_height = s->mb_height / code;

return 0;
}

static int wmv2_encode_init(AVCodecContext *avctx){
Wmv2Context * const w= avctx->priv_data;

if(MPV_encode_init(avctx) < 0)
return -1;

ff_wmv2_common_init(w);

avctx->extradata_size= 4;
avctx->extradata= av_mallocz(avctx->extradata_size + 10);
encode_ext_header(w);

return 0;
}

#if 0 /* unused, remove? */
static int wmv2_encode_end(AVCodecContext *avctx){

if(MPV_encode_end(avctx) < 0)
return -1;

avctx->extradata_size= 0;
av_freep(&avctx->extradata);

return 0;
}
#endif

int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
{
Wmv2Context * const w= (Wmv2Context*)s;

put_bits(&s->pb, 1, s->pict_type - 1);
if(s->pict_type == I_TYPE){
put_bits(&s->pb, 7, 0);
}
put_bits(&s->pb, 5, s->qscale);

s->dc_table_index = 1;
s->mv_table_index = 1; /* only if P frame */
// s->use_skip_mb_code = 1; /* only if P frame */
s->per_mb_rl_table = 0;
s->mspel= 0;
w->per_mb_abt=0;
w->abt_type=0;
w->j_type=0;

assert(s->flipflop_rounding);

if (s->pict_type == I_TYPE) {
assert(s->no_rounding==1);
if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);

if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);

if(!s->per_mb_rl_table){
ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
ff_msmpeg4_code012(&s->pb, s->rl_table_index);
}

put_bits(&s->pb, 1, s->dc_table_index);

s->inter_intra_pred= 0;
}else{
int cbp_index;

put_bits(&s->pb, 2, SKIP_TYPE_NONE);

ff_msmpeg4_code012(&s->pb, cbp_index=0);
if(s->qscale <= 10){
int map[3]= {0,2,1};
w->cbp_table_index= map[cbp_index];
}else if(s->qscale <= 20){
int map[3]= {1,0,2};
w->cbp_table_index= map[cbp_index];
}else{
int map[3]= {2,1,0};
w->cbp_table_index= map[cbp_index];
}

if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);

if(w->abt_flag){
put_bits(&s->pb, 1, w->per_mb_abt^1);
if(!w->per_mb_abt){
ff_msmpeg4_code012(&s->pb, w->abt_type);
}
}

if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);

if(!s->per_mb_rl_table){
ff_msmpeg4_code012(&s->pb, s->rl_table_index);
s->rl_chroma_table_index = s->rl_table_index;
}
put_bits(&s->pb, 1, s->dc_table_index);
put_bits(&s->pb, 1, s->mv_table_index);

s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
}
s->esc3_level_length= 0;
s->esc3_run_length= 0;

return 0;
}

/* Nearly identical to wmv1 but that is just because we do not use the
* useless M$ crap features. It is duplicated here in case someone wants
* to add support for these crap features. */
void ff_wmv2_encode_mb(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y)
{
Wmv2Context * const w= (Wmv2Context*)s;
int cbp, coded_cbp, i;
int pred_x, pred_y;
uint8_t *coded_block;

ff_msmpeg4_handle_slices(s);

if (!s->mb_intra) {
/* compute cbp */
cbp = 0;
for (i = 0; i < 6; i++) {
if (s->block_last_index[i] >= 0)
cbp |= 1 << (5 - i);
}

put_bits(&s->pb,
wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);

/* motion vector */
h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
ff_msmpeg4_encode_motion(s, motion_x - pred_x,
motion_y - pred_y);
} else {
/* compute cbp */
cbp = 0;
coded_cbp = 0;
for (i = 0; i < 6; i++) {
int val, pred;
val = (s->block_last_index[i] >= 1);
cbp |= val << (5 - i);
if (i < 4) {
/* predict value for close blocks only for luma */
pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
*coded_block = val;
val = val ^ pred;
}
coded_cbp |= val << (5 - i);
}
#if 0
if (coded_cbp)
printf("cbp=%x %x\n", cbp, coded_cbp);
#endif

if (s->pict_type == I_TYPE) {
put_bits(&s->pb,
ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
} else {
put_bits(&s->pb,
wmv2_inter_table[w->cbp_table_index][cbp][1],
wmv2_inter_table[w->cbp_table_index][cbp][0]);
}
put_bits(&s->pb, 1, 0); /* no AC prediction yet */
if(s->inter_intra_pred){
s->h263_aic_dir=0;
put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
}
}

for (i = 0; i < 6; i++) {
ff_msmpeg4_encode_block(s, block[i], i);
}
}

AVCodec wmv2_encoder = {
"wmv2",
CODEC_TYPE_VIDEO,
CODEC_ID_WMV2,
sizeof(Wmv2Context),
wmv2_encode_init,
MPV_encode_picture,
MPV_encode_end,
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
};

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