- if(!s->mb_x) C[0] = C[1] = 0;
- if(!s->first_slice_line) { // predictor A is not out of bounds
- if(s->mb_width == 1) {
- 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]);
- }
- } else if(s->mb_x) { // predictor C is not out of bounds
- px = C[0];
- py = C[1];
- } else {
- px = py = 0;
- }
- /* Pullback MV as specified in 8.3.5.3.4 */
- {
- int qx, qy, X, Y;
- if(v->profile < PROFILE_ADVANCED) {
- qx = (s->mb_x << 5);
- qy = (s->mb_y << 5);
- X = (s->mb_width << 5) - 4;
- Y = (s->mb_height << 5) - 4;
- if(qx + px < -28) px = -28 - qx;
- if(qy + py < -28) py = -28 - qy;
- if(qx + px > X) px = X - qx;
- if(qy + py > Y) py = Y - qy;
- } else {
- qx = (s->mb_x << 6);
- qy = (s->mb_y << 6);
- X = (s->mb_width << 6) - 4;
- Y = (s->mb_height << 6) - 4;
- if(qx + px < -60) px = -60 - qx;
- if(qy + py < -60) py = -60 - qy;
- if(qx + px > X) px = X - qx;
- if(qy + py > Y) py = Y - qy;
- }
- }
- /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
- if(0 && !s->first_slice_line && s->mb_x) {
- if(is_intra[xy - wrap])
- sum = FFABS(px) + FFABS(py);
- else
- sum = FFABS(px - A[0]) + FFABS(py - A[1]);
- if(sum > 32) {
- if(get_bits1(&s->gb)) {
- px = A[0];
- py = A[1];
- } else {
- px = C[0];
- py = C[1];
- }
- } else {
- if(is_intra[xy - 2])
- sum = FFABS(px) + FFABS(py);
- else
- sum = FFABS(px - C[0]) + FFABS(py - C[1]);
- if(sum > 32) {
- if(get_bits1(&s->gb)) {
- px = A[0];
- py = A[1];
- } else {
- px = C[0];
- py = C[1];
- }
- }
- }
- }
- /* store MV using signed modulus of MV range defined in 4.11 */
-
- s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
- s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
- }
- s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
- s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
- s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
- s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
-}
-
-/** Get predicted DC value for I-frames only
- * prediction dir: left=0, top=1
- * @param s MpegEncContext
- * @param[in] n block index in the current MB
- * @param dc_val_ptr Pointer to DC predictor
- * @param dir_ptr Prediction direction for use in AC prediction
- */
-static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
- int16_t **dc_val_ptr, int *dir_ptr)
-{
- int a, b, c, wrap, pred, scale;
- int16_t *dc_val;
- static const uint16_t dcpred[32] = {
- -1, 1024, 512, 341, 256, 205, 171, 146, 128,
- 114, 102, 93, 85, 79, 73, 68, 64,
- 60, 57, 54, 51, 49, 47, 45, 43,
- 41, 39, 38, 37, 35, 34, 33
- };
-
- /* find prediction - wmv3_dc_scale always used here in fact */
- if (n < 4) scale = s->y_dc_scale;
- else scale = s->c_dc_scale;
-
- wrap = s->block_wrap[n];
- dc_val= s->dc_val[0] + s->block_index[n];
-
- /* B A
- * C X
- */
- c = dc_val[ - 1];
- b = dc_val[ - 1 - wrap];
- a = dc_val[ - wrap];
-
- if (pq < 9 || !overlap)
- {
- /* Set outer values */
- if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
- if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
- }
- else
- {
- /* Set outer values */
- if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
- if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
- }
-
- if (abs(a - b) <= abs(b - c)) {
- pred = c;
- *dir_ptr = 1;//left
- } else {
- pred = a;
- *dir_ptr = 0;//top
- }
-
- /* update predictor */
- *dc_val_ptr = &dc_val[0];
- return pred;
-}
-
-
-/** Get predicted DC value
- * prediction dir: left=0, top=1
- * @param s MpegEncContext
- * @param[in] n block index in the current MB
- * @param dc_val_ptr Pointer to DC predictor
- * @param dir_ptr Prediction direction for use in AC prediction
- */
-static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
- int a_avail, int c_avail,
- int16_t **dc_val_ptr, int *dir_ptr)
-{
- int a, b, c, wrap, pred, scale;
- int16_t *dc_val;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int q1, q2 = 0;
-
- /* find prediction - wmv3_dc_scale always used here in fact */
- if (n < 4) scale = s->y_dc_scale;
- else scale = s->c_dc_scale;
-
- wrap = s->block_wrap[n];
- dc_val= s->dc_val[0] + s->block_index[n];
-
- /* B A
- * C X
- */
- c = dc_val[ - 1];
- b = dc_val[ - 1 - wrap];
- a = dc_val[ - wrap];
- /* scale predictors if needed */
- q1 = s->current_picture.qscale_table[mb_pos];
- if(c_avail && (n!= 1 && n!=3)) {
- q2 = s->current_picture.qscale_table[mb_pos - 1];
- if(q2 && q2 != q1)
- c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
- }
- if(a_avail && (n!= 2 && n!=3)) {
- q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
- if(q2 && q2 != q1)
- a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
- }
- if(a_avail && c_avail && (n!=3)) {
- int off = mb_pos;
- if(n != 1) off--;
- if(n != 2) off -= s->mb_stride;
- q2 = s->current_picture.qscale_table[off];
- if(q2 && q2 != q1)
- b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
- }
-
- if(a_avail && c_avail) {
- if(abs(a - b) <= abs(b - c)) {
- pred = c;
- *dir_ptr = 1;//left
- } else {
- pred = a;
- *dir_ptr = 0;//top
- }
- } else if(a_avail) {
- pred = a;
- *dir_ptr = 0;//top
- } else if(c_avail) {
- pred = c;
- *dir_ptr = 1;//left
- } else {
- pred = 0;
- *dir_ptr = 1;//left
- }
-
- /* update predictor */
- *dc_val_ptr = &dc_val[0];
- return pred;
-}
-
-
-/**
- * @defgroup std_mb VC1 Macroblock-level functions in Simple/Main Profiles
- * @see 7.1.4, p91 and 8.1.1.7, p(1)04
- * @{
- */
-
-static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
-{
- int xy, wrap, pred, a, b, c;
-
- xy = s->block_index[n];
- wrap = s->b8_stride;
-
- /* B C
- * A X
- */
- a = s->coded_block[xy - 1 ];
- b = s->coded_block[xy - 1 - wrap];
- c = s->coded_block[xy - wrap];
-
- if (b == c) {
- pred = a;
- } else {
- pred = c;
- }
-
- /* store value */
- *coded_block_ptr = &s->coded_block[xy];
-
- return pred;
-}
-
-/**
- * Decode one AC coefficient
- * @param v The VC1 context
- * @param last Last coefficient
- * @param skip How much zero coefficients to skip
- * @param value Decoded AC coefficient value
- * @see 8.1.3.4
- */
-static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
-{
- GetBitContext *gb = &v->s.gb;
- int index, escape, run = 0, level = 0, lst = 0;
-
- index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
- if (index != vc1_ac_sizes[codingset] - 1) {
- run = vc1_index_decode_table[codingset][index][0];
- level = vc1_index_decode_table[codingset][index][1];
- lst = index >= vc1_last_decode_table[codingset];
- if(get_bits1(gb))
- level = -level;
- } else {
- escape = decode210(gb);
- if (escape != 2) {
- index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
- run = vc1_index_decode_table[codingset][index][0];
- level = vc1_index_decode_table[codingset][index][1];
- lst = index >= vc1_last_decode_table[codingset];
- if(escape == 0) {
- if(lst)
- level += vc1_last_delta_level_table[codingset][run];
- else
- level += vc1_delta_level_table[codingset][run];
- } else {
- if(lst)
- run += vc1_last_delta_run_table[codingset][level] + 1;
- else
- run += vc1_delta_run_table[codingset][level] + 1;
- }
- if(get_bits1(gb))
- level = -level;
- } else {
- int sign;
- lst = get_bits1(gb);
- if(v->s.esc3_level_length == 0) {
- if(v->pq < 8 || v->dquantfrm) { // table 59
- v->s.esc3_level_length = get_bits(gb, 3);
- if(!v->s.esc3_level_length)
- v->s.esc3_level_length = get_bits(gb, 2) + 8;
- } else { //table 60
- v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
- }
- v->s.esc3_run_length = 3 + get_bits(gb, 2);
- }
- run = get_bits(gb, v->s.esc3_run_length);
- sign = get_bits1(gb);
- level = get_bits(gb, v->s.esc3_level_length);
- if(sign)
- level = -level;
- }
- }
-
- *last = lst;
- *skip = run;
- *value = level;
-}
-
-/** Decode intra block in intra frames - should be faster than decode_intra_block
- * @param v VC1Context
- * @param block block to decode
- * @param coded are AC coeffs present or not
- * @param codingset set of VLC to decode data
- */
-static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
-{
- GetBitContext *gb = &v->s.gb;
- MpegEncContext *s = &v->s;
- int dc_pred_dir = 0; /* Direction of the DC prediction used */
- int run_diff, i;
- int16_t *dc_val;
- int16_t *ac_val, *ac_val2;
- int dcdiff;
-
- /* Get DC differential */
- if (n < 4) {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- } else {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- }
- if (dcdiff < 0){
- av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
- return -1;
- }
- if (dcdiff)
- {
- if (dcdiff == 119 /* ESC index value */)
- {
- /* TODO: Optimize */
- if (v->pq == 1) dcdiff = get_bits(gb, 10);
- else if (v->pq == 2) dcdiff = get_bits(gb, 9);
- else dcdiff = get_bits(gb, 8);
- }
- else
- {
- if (v->pq == 1)
- dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
- else if (v->pq == 2)
- dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
- }
- if (get_bits1(gb))
- dcdiff = -dcdiff;
- }
-
- /* Prediction */
- dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
- *dc_val = dcdiff;
-
- /* Store the quantized DC coeff, used for prediction */
- if (n < 4) {
- block[0] = dcdiff * s->y_dc_scale;
- } else {
- block[0] = dcdiff * s->c_dc_scale;
- }
- /* Skip ? */
- run_diff = 0;
- i = 0;
- if (!coded) {
- goto not_coded;
- }
-
- //AC Decoding
- i = 1;
-
- {
- int last = 0, skip, value;
- const int8_t *zz_table;
- int scale;
- int k;
-
- scale = v->pq * 2 + v->halfpq;
-
- if(v->s.ac_pred) {
- if(!dc_pred_dir)
- zz_table = wmv1_scantable[2];
- else
- zz_table = wmv1_scantable[3];
- } else
- zz_table = wmv1_scantable[1];
-
- ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
- ac_val2 = ac_val;
- if(dc_pred_dir) //left
- ac_val -= 16;
- else //top
- ac_val -= 16 * s->block_wrap[n];
-
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
- i += skip;
- if(i > 63)
- break;
- block[zz_table[i++]] = value;
- }
-
- /* apply AC prediction if needed */
- if(s->ac_pred) {
- if(dc_pred_dir) { //left
- for(k = 1; k < 8; k++)
- block[k << 3] += ac_val[k];
- } else { //top
- for(k = 1; k < 8; k++)
- block[k] += ac_val[k + 8];
- }
- }
- /* save AC coeffs for further prediction */
- for(k = 1; k < 8; k++) {
- ac_val2[k] = block[k << 3];
- ac_val2[k + 8] = block[k];
- }
-
- /* scale AC coeffs */
- for(k = 1; k < 64; k++)
- if(block[k]) {
- block[k] *= scale;
- if(!v->pquantizer)
- block[k] += (block[k] < 0) ? -v->pq : v->pq;
- }
-
- if(s->ac_pred) i = 63;
- }
-
-not_coded:
- if(!coded) {
- int k, scale;
- ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
- ac_val2 = ac_val;
-
- scale = v->pq * 2 + v->halfpq;
- memset(ac_val2, 0, 16 * 2);
- if(dc_pred_dir) {//left
- ac_val -= 16;
- if(s->ac_pred)
- memcpy(ac_val2, ac_val, 8 * 2);
- } else {//top
- ac_val -= 16 * s->block_wrap[n];
- if(s->ac_pred)
- memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
- }
-
- /* apply AC prediction if needed */
- if(s->ac_pred) {
- if(dc_pred_dir) { //left
- for(k = 1; k < 8; k++) {
- block[k << 3] = ac_val[k] * scale;
- if(!v->pquantizer && block[k << 3])
- block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
- }
- } else { //top
- for(k = 1; k < 8; k++) {
- block[k] = ac_val[k + 8] * scale;
- if(!v->pquantizer && block[k])
- block[k] += (block[k] < 0) ? -v->pq : v->pq;
- }
- }
- i = 63;
- }
- }
- s->block_last_index[n] = i;
-
- return 0;
-}
-
-/** Decode intra block in intra frames - should be faster than decode_intra_block
- * @param v VC1Context
- * @param block block to decode
- * @param coded are AC coeffs present or not
- * @param codingset set of VLC to decode data
- */
-static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
-{
- GetBitContext *gb = &v->s.gb;
- MpegEncContext *s = &v->s;
- int dc_pred_dir = 0; /* Direction of the DC prediction used */
- int run_diff, i;
- int16_t *dc_val;
- int16_t *ac_val, *ac_val2;
- int dcdiff;
- int a_avail = v->a_avail, c_avail = v->c_avail;
- int use_pred = s->ac_pred;
- int scale;
- int q1, q2 = 0;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
-
- /* Get DC differential */
- if (n < 4) {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- } else {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- }
- if (dcdiff < 0){
- av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
- return -1;
- }
- if (dcdiff)
- {
- if (dcdiff == 119 /* ESC index value */)
- {
- /* TODO: Optimize */
- if (mquant == 1) dcdiff = get_bits(gb, 10);
- else if (mquant == 2) dcdiff = get_bits(gb, 9);
- else dcdiff = get_bits(gb, 8);
- }
- else
- {
- if (mquant == 1)
- dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
- else if (mquant == 2)
- dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
- }
- if (get_bits1(gb))
- dcdiff = -dcdiff;
- }
-
- /* Prediction */
- dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
- *dc_val = dcdiff;
-
- /* Store the quantized DC coeff, used for prediction */
- if (n < 4) {
- block[0] = dcdiff * s->y_dc_scale;
- } else {
- block[0] = dcdiff * s->c_dc_scale;
- }
- /* Skip ? */
- run_diff = 0;
- i = 0;
-
- //AC Decoding
- i = 1;
-
- /* check if AC is needed at all */
- if(!a_avail && !c_avail) use_pred = 0;
- ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
- ac_val2 = ac_val;
-
- scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
-
- if(dc_pred_dir) //left
- ac_val -= 16;
- else //top
- ac_val -= 16 * s->block_wrap[n];
-
- q1 = s->current_picture.qscale_table[mb_pos];
- if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
- if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
- if(dc_pred_dir && n==1) q2 = q1;
- if(!dc_pred_dir && n==2) q2 = q1;
- if(n==3) q2 = q1;
-
- if(coded) {
- int last = 0, skip, value;
- const int8_t *zz_table;
- int k;
-
- if(v->s.ac_pred) {
- if(!dc_pred_dir)
- zz_table = wmv1_scantable[2];
- else
- zz_table = wmv1_scantable[3];
- } else
- zz_table = wmv1_scantable[1];
-
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
- i += skip;
- if(i > 63)
- break;
- block[zz_table[i++]] = value;
- }
-
- /* apply AC prediction if needed */
- if(use_pred) {
- /* scale predictors if needed*/
- if(q2 && q1!=q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
-
- if(dc_pred_dir) { //left
- for(k = 1; k < 8; k++)
- block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- } else { //top
- for(k = 1; k < 8; k++)
- block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- } else {
- if(dc_pred_dir) { //left
- for(k = 1; k < 8; k++)
- block[k << 3] += ac_val[k];
- } else { //top
- for(k = 1; k < 8; k++)
- block[k] += ac_val[k + 8];
- }
- }
- }
- /* save AC coeffs for further prediction */
- for(k = 1; k < 8; k++) {
- ac_val2[k] = block[k << 3];
- ac_val2[k + 8] = block[k];
- }
-
- /* scale AC coeffs */
- for(k = 1; k < 64; k++)
- if(block[k]) {
- block[k] *= scale;
- if(!v->pquantizer)
- block[k] += (block[k] < 0) ? -mquant : mquant;
- }
-
- if(use_pred) i = 63;
- } else { // no AC coeffs
- int k;
-
- memset(ac_val2, 0, 16 * 2);
- if(dc_pred_dir) {//left
- if(use_pred) {
- memcpy(ac_val2, ac_val, 8 * 2);
- if(q2 && q1!=q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
- for(k = 1; k < 8; k++)
- ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- }
- } else {//top
- if(use_pred) {
- memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
- if(q2 && q1!=q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
- for(k = 1; k < 8; k++)
- ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- }
- }
-
- /* apply AC prediction if needed */
- if(use_pred) {
- if(dc_pred_dir) { //left
- for(k = 1; k < 8; k++) {
- block[k << 3] = ac_val2[k] * scale;
- if(!v->pquantizer && block[k << 3])
- block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
- }
- } else { //top
- for(k = 1; k < 8; k++) {
- block[k] = ac_val2[k + 8] * scale;
- if(!v->pquantizer && block[k])
- block[k] += (block[k] < 0) ? -mquant : mquant;
- }
- }
- i = 63;
- }
- }
- s->block_last_index[n] = i;
-
- return 0;
-}
-
-/** Decode intra block in inter frames - more generic version than vc1_decode_i_block
- * @param v VC1Context
- * @param block block to decode
- * @param coded are AC coeffs present or not
- * @param mquant block quantizer
- * @param codingset set of VLC to decode data
- */
-static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
-{
- GetBitContext *gb = &v->s.gb;
- MpegEncContext *s = &v->s;
- int dc_pred_dir = 0; /* Direction of the DC prediction used */
- int run_diff, i;
- int16_t *dc_val;
- int16_t *ac_val, *ac_val2;
- int dcdiff;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int a_avail = v->a_avail, c_avail = v->c_avail;
- int use_pred = s->ac_pred;
- int scale;
- int q1, q2 = 0;
-
- /* XXX: Guard against dumb values of mquant */
- mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
-
- /* Set DC scale - y and c use the same */
- s->y_dc_scale = s->y_dc_scale_table[mquant];
- s->c_dc_scale = s->c_dc_scale_table[mquant];
-
- /* Get DC differential */
- if (n < 4) {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- } else {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- }
- if (dcdiff < 0){
- av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
- return -1;
- }
- if (dcdiff)
- {
- if (dcdiff == 119 /* ESC index value */)
- {
- /* TODO: Optimize */
- if (mquant == 1) dcdiff = get_bits(gb, 10);
- else if (mquant == 2) dcdiff = get_bits(gb, 9);
- else dcdiff = get_bits(gb, 8);
- }
- else
- {
- if (mquant == 1)
- dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
- else if (mquant == 2)
- dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
- }
- if (get_bits1(gb))
- dcdiff = -dcdiff;
- }
-
- /* Prediction */
- dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
- *dc_val = dcdiff;
-
- /* Store the quantized DC coeff, used for prediction */
-
- if (n < 4) {
- block[0] = dcdiff * s->y_dc_scale;
- } else {
- block[0] = dcdiff * s->c_dc_scale;
- }
- /* Skip ? */
- run_diff = 0;
- i = 0;
-
- //AC Decoding
- i = 1;
-
- /* check if AC is needed at all and adjust direction if needed */
- if(!a_avail) dc_pred_dir = 1;
- if(!c_avail) dc_pred_dir = 0;
- if(!a_avail && !c_avail) use_pred = 0;
- ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
- ac_val2 = ac_val;
-
- scale = mquant * 2 + v->halfpq;
-
- if(dc_pred_dir) //left
- ac_val -= 16;
- else //top
- ac_val -= 16 * s->block_wrap[n];
-
- q1 = s->current_picture.qscale_table[mb_pos];
- if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
- if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
- if(dc_pred_dir && n==1) q2 = q1;
- if(!dc_pred_dir && n==2) q2 = q1;
- if(n==3) q2 = q1;
-
- if(coded) {
- int last = 0, skip, value;
- const int8_t *zz_table;
- int k;
-
- zz_table = wmv1_scantable[0];
-
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
- i += skip;
- if(i > 63)
- break;
- block[zz_table[i++]] = value;
- }
-
- /* apply AC prediction if needed */
- if(use_pred) {
- /* scale predictors if needed*/
- if(q2 && q1!=q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
-
- if(dc_pred_dir) { //left
- for(k = 1; k < 8; k++)
- block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- } else { //top
- for(k = 1; k < 8; k++)
- block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- } else {
- if(dc_pred_dir) { //left
- for(k = 1; k < 8; k++)
- block[k << 3] += ac_val[k];
- } else { //top
- for(k = 1; k < 8; k++)
- block[k] += ac_val[k + 8];
- }
- }
- }
- /* save AC coeffs for further prediction */
- for(k = 1; k < 8; k++) {
- ac_val2[k] = block[k << 3];
- ac_val2[k + 8] = block[k];
- }
-
- /* scale AC coeffs */
- for(k = 1; k < 64; k++)
- if(block[k]) {
- block[k] *= scale;
- if(!v->pquantizer)
- block[k] += (block[k] < 0) ? -mquant : mquant;
- }
-
- if(use_pred) i = 63;
- } else { // no AC coeffs
- int k;
-
- memset(ac_val2, 0, 16 * 2);
- if(dc_pred_dir) {//left
- if(use_pred) {
- memcpy(ac_val2, ac_val, 8 * 2);
- if(q2 && q1!=q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
- for(k = 1; k < 8; k++)
- ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- }
- } else {//top
- if(use_pred) {
- memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
- if(q2 && q1!=q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
- for(k = 1; k < 8; k++)
- ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- }
- }
-
- /* apply AC prediction if needed */
- if(use_pred) {
- if(dc_pred_dir) { //left
- for(k = 1; k < 8; k++) {
- block[k << 3] = ac_val2[k] * scale;
- if(!v->pquantizer && block[k << 3])
- block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
- }
- } else { //top
- for(k = 1; k < 8; k++) {
- block[k] = ac_val2[k + 8] * scale;
- if(!v->pquantizer && block[k])
- block[k] += (block[k] < 0) ? -mquant : mquant;
- }
- }
- i = 63;
- }
- }
- s->block_last_index[n] = i;
-
- return 0;
-}
-
-/** Decode P block
- */
-static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block,
- uint8_t *dst, int linesize, int skip_block, int apply_filter, int cbp_top, int cbp_left)
-{
- MpegEncContext *s = &v->s;
- GetBitContext *gb = &s->gb;
- int i, j;
- int subblkpat = 0;
- int scale, off, idx, last, skip, value;
- int ttblk = ttmb & 7;
- int pat = 0;
-
- if(ttmb == -1) {
- ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)];
- }
- if(ttblk == TT_4X4) {
- subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
- }
- if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) {
- subblkpat = decode012(gb);
- if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
- if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
- if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
- }
- scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
-
- // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
- if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
- subblkpat = 2 - (ttblk == TT_8X4_TOP);
- ttblk = TT_8X4;
- }
- if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
- subblkpat = 2 - (ttblk == TT_4X8_LEFT);
- ttblk = TT_4X8;
- }
- switch(ttblk) {
- case TT_8X8:
- pat = 0xF;
- i = 0;
- last = 0;
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
- i += skip;
- if(i > 63)
- break;
- idx = wmv1_scantable[0][i++];
- block[idx] = value * scale;
- if(!v->pquantizer)
- block[idx] += (block[idx] < 0) ? -mquant : mquant;
- }
- if(!skip_block){
- s->dsp.vc1_inv_trans_8x8(block);
- s->dsp.add_pixels_clamped(block, dst, linesize);
- if(apply_filter && cbp_top & 0xC)
- vc1_loop_filter(dst, 1, linesize, 8, mquant);
- if(apply_filter && cbp_left & 0xA)
- vc1_loop_filter(dst, linesize, 1, 8, mquant);
- }
- break;
- case TT_4X4:
- pat = ~subblkpat & 0xF;
- for(j = 0; j < 4; j++) {
- last = subblkpat & (1 << (3 - j));
- i = 0;
- off = (j & 1) * 4 + (j & 2) * 16;
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
- i += skip;
- if(i > 15)
- break;
- idx = ff_vc1_simple_progressive_4x4_zz[i++];
- block[idx + off] = value * scale;
- if(!v->pquantizer)
- block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
- }
- if(!(subblkpat & (1 << (3 - j))) && !skip_block){
- s->dsp.vc1_inv_trans_4x4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off);
- if(apply_filter && (j&2 ? pat & (1<<(j-2)) : (cbp_top & (1 << (j + 2)))))
- vc1_loop_filter(dst + (j&1)*4 + (j&2)*2*linesize, 1, linesize, 4, mquant);
- if(apply_filter && (j&1 ? pat & (1<<(j-1)) : (cbp_left & (1 << (j + 1)))))
- vc1_loop_filter(dst + (j&1)*4 + (j&2)*2*linesize, linesize, 1, 4, mquant);
- }
- }
- break;
- case TT_8X4:
- pat = ~((subblkpat & 2)*6 + (subblkpat & 1)*3) & 0xF;
- for(j = 0; j < 2; j++) {
- last = subblkpat & (1 << (1 - j));
- i = 0;
- off = j * 32;
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
- i += skip;
- if(i > 31)
- break;
- idx = v->zz_8x4[i++]+off;
- block[idx] = value * scale;
- if(!v->pquantizer)
- block[idx] += (block[idx] < 0) ? -mquant : mquant;
- }
- if(!(subblkpat & (1 << (1 - j))) && !skip_block){
- s->dsp.vc1_inv_trans_8x4(dst + j*4*linesize, linesize, block + off);
- if(apply_filter && j ? pat & 0x3 : (cbp_top & 0xC))
- vc1_loop_filter(dst + j*4*linesize, 1, linesize, 8, mquant);
- if(apply_filter && cbp_left & (2 << j))
- vc1_loop_filter(dst + j*4*linesize, linesize, 1, 4, mquant);
- }
- }
- break;
- case TT_4X8:
- pat = ~(subblkpat*5) & 0xF;
- for(j = 0; j < 2; j++) {
- last = subblkpat & (1 << (1 - j));
- i = 0;
- off = j * 4;
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
- i += skip;
- if(i > 31)
- break;
- idx = v->zz_4x8[i++]+off;
- block[idx] = value * scale;
- if(!v->pquantizer)
- block[idx] += (block[idx] < 0) ? -mquant : mquant;
- }
- if(!(subblkpat & (1 << (1 - j))) && !skip_block){
- s->dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
- if(apply_filter && cbp_top & (2 << j))
- vc1_loop_filter(dst + j*4, 1, linesize, 4, mquant);
- if(apply_filter && j ? pat & 0x5 : (cbp_left & 0xA))
- vc1_loop_filter(dst + j*4, linesize, 1, 8, mquant);
- }
- }
- break;
- }
- return pat;
-}
-
-
-/** Decode one P-frame MB (in Simple/Main profile)
- */
-static int vc1_decode_p_mb(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- GetBitContext *gb = &s->gb;
- int i, j;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int cbp; /* cbp decoding stuff */
- int mqdiff, mquant; /* MB quantization */
- int ttmb = v->ttfrm; /* MB Transform type */
-
- static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
- offset_table[6] = { 0, 1, 3, 7, 15, 31 };
- int mb_has_coeffs = 1; /* last_flag */
- int dmv_x, dmv_y; /* Differential MV components */
- int index, index1; /* LUT indexes */
- int val, sign; /* temp values */
- int first_block = 1;
- int dst_idx, off;
- int skipped, fourmv;
- int block_cbp = 0, pat;
- int apply_loop_filter;
-
- mquant = v->pq; /* Loosy initialization */
-
- if (v->mv_type_is_raw)
- fourmv = get_bits1(gb);
- else
- fourmv = v->mv_type_mb_plane[mb_pos];
- if (v->skip_is_raw)
- skipped = get_bits1(gb);
- else
- skipped = v->s.mbskip_table[mb_pos];
-
- s->dsp.clear_blocks(s->block[0]);
-
- apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY);
- if (!fourmv) /* 1MV mode */
- {
- if (!skipped)
- {
- GET_MVDATA(dmv_x, dmv_y);
-
- if (s->mb_intra) {
- s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
- s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
- }
- s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
- vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
-
- /* FIXME Set DC val for inter block ? */
- if (s->mb_intra && !mb_has_coeffs)
- {
- GET_MQUANT();
- s->ac_pred = get_bits1(gb);
- cbp = 0;
- }
- else if (mb_has_coeffs)
- {
- if (s->mb_intra) s->ac_pred = get_bits1(gb);
- cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- GET_MQUANT();
- }
- else
- {
- mquant = v->pq;
- cbp = 0;
- }
- s->current_picture.qscale_table[mb_pos] = mquant;
-
- if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
- VC1_TTMB_VLC_BITS, 2);
- if(!s->mb_intra) vc1_mc_1mv(v, 0);
- dst_idx = 0;
- for (i=0; i<6; i++)
- {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- v->mb_type[0][s->block_index[i]] = s->mb_intra;
- if(s->mb_intra) {
- /* check if prediction blocks A and C are available */
- v->a_avail = v->c_avail = 0;
- if(i == 2 || i == 3 || !s->first_slice_line)
- v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
- if(i == 1 || i == 3 || s->mb_x)
- v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
- vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
- if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
- s->dsp.vc1_inv_trans_8x8(s->block[i]);
- if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
- s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
- if(v->pq >= 9 && v->overlap) {
- if(v->c_avail)
- s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
- if(v->a_avail)
- s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
- }
- if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
- int left_cbp, top_cbp;
- if(i & 4){
- left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
- top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
- }else{
- left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
- top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
- }
- if(left_cbp & 0xC)
- vc1_loop_filter(s->dest[dst_idx] + off, 1, i & 4 ? s->uvlinesize : s->linesize, 8, mquant);
- if(top_cbp & 0xA)
- vc1_loop_filter(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, 1, 8, mquant);
- }
- block_cbp |= 0xF << (i << 2);
- } else if(val) {
- int left_cbp = 0, top_cbp = 0, filter = 0;
- if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
- filter = 1;
- if(i & 4){
- left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
- top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
- }else{
- left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
- top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
- }
- if(left_cbp & 0xC)
- vc1_loop_filter(s->dest[dst_idx] + off, 1, i & 4 ? s->uvlinesize : s->linesize, 8, mquant);
- if(top_cbp & 0xA)
- vc1_loop_filter(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, 1, 8, mquant);
- }
- pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp);
- block_cbp |= pat << (i << 2);
- if(!v->ttmbf && ttmb < 8) ttmb = -1;
- first_block = 0;
- }
- }
- }
- else //Skipped
- {
- s->mb_intra = 0;
- for(i = 0; i < 6; i++) {
- v->mb_type[0][s->block_index[i]] = 0;
- s->dc_val[0][s->block_index[i]] = 0;
- }
- s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
- s->current_picture.qscale_table[mb_pos] = 0;
- vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
- vc1_mc_1mv(v, 0);
- return 0;
- }
- } //1MV mode
- else //4MV mode
- {
- if (!skipped /* unskipped MB */)
- {
- int intra_count = 0, coded_inter = 0;
- int is_intra[6], is_coded[6];
- /* Get CBPCY */
- cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- for (i=0; i<6; i++)
- {
- val = ((cbp >> (5 - i)) & 1);
- s->dc_val[0][s->block_index[i]] = 0;
- s->mb_intra = 0;
- if(i < 4) {
- dmv_x = dmv_y = 0;
- s->mb_intra = 0;
- mb_has_coeffs = 0;
- if(val) {
- GET_MVDATA(dmv_x, dmv_y);
- }
- vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
- if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
- intra_count += s->mb_intra;
- is_intra[i] = s->mb_intra;
- is_coded[i] = mb_has_coeffs;
- }
- if(i&4){
- is_intra[i] = (intra_count >= 3);
- is_coded[i] = val;
- }
- if(i == 4) vc1_mc_4mv_chroma(v);
- v->mb_type[0][s->block_index[i]] = is_intra[i];
- if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
- }
- // if there are no coded blocks then don't do anything more
- if(!intra_count && !coded_inter) return 0;
- dst_idx = 0;
- GET_MQUANT();
- s->current_picture.qscale_table[mb_pos] = mquant;
- /* test if block is intra and has pred */
- {
- int intrapred = 0;
- for(i=0; i<6; i++)
- if(is_intra[i]) {
- if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
- || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
- intrapred = 1;
- break;
- }
- }
- if(intrapred)s->ac_pred = get_bits1(gb);
- else s->ac_pred = 0;
- }
- if (!v->ttmbf && coded_inter)
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
- for (i=0; i<6; i++)
- {
- dst_idx += i >> 2;
- off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- s->mb_intra = is_intra[i];
- if (is_intra[i]) {
- /* check if prediction blocks A and C are available */
- v->a_avail = v->c_avail = 0;
- if(i == 2 || i == 3 || !s->first_slice_line)
- v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
- if(i == 1 || i == 3 || s->mb_x)
- v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
- vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
- if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
- s->dsp.vc1_inv_trans_8x8(s->block[i]);
- if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
- s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
- if(v->pq >= 9 && v->overlap) {
- if(v->c_avail)
- s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
- if(v->a_avail)
- s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
- }
- if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
- int left_cbp, top_cbp;
- if(i & 4){
- left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
- top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
- }else{
- left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
- top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
- }
- if(left_cbp & 0xC)
- vc1_loop_filter(s->dest[dst_idx] + off, 1, i & 4 ? s->uvlinesize : s->linesize, 8, mquant);
- if(top_cbp & 0xA)
- vc1_loop_filter(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, 1, 8, mquant);
- }
- block_cbp |= 0xF << (i << 2);
- } else if(is_coded[i]) {
- int left_cbp = 0, top_cbp = 0, filter = 0;
- if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
- filter = 1;
- if(i & 4){
- left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
- top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
- }else{
- left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
- top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
- }
- if(left_cbp & 0xC)
- vc1_loop_filter(s->dest[dst_idx] + off, 1, i & 4 ? s->uvlinesize : s->linesize, 8, mquant);
- if(top_cbp & 0xA)
- vc1_loop_filter(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, 1, 8, mquant);
- }
- pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp);
- block_cbp |= pat << (i << 2);
- if(!v->ttmbf && ttmb < 8) ttmb = -1;
- first_block = 0;
- }
- }
- return 0;
- }
- else //Skipped MB
- {
- s->mb_intra = 0;
- s->current_picture.qscale_table[mb_pos] = 0;
- for (i=0; i<6; i++) {
- v->mb_type[0][s->block_index[i]] = 0;
- s->dc_val[0][s->block_index[i]] = 0;
- }
- for (i=0; i<4; i++)
- {
- vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
- vc1_mc_4mv_luma(v, i);
- }
- vc1_mc_4mv_chroma(v);
- s->current_picture.qscale_table[mb_pos] = 0;
- return 0;
- }
- }
- v->cbp[s->mb_x] = block_cbp;
-
- /* Should never happen */
- return -1;
-}
-
-/** Decode one B-frame MB (in Main profile)
- */
-static void vc1_decode_b_mb(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- GetBitContext *gb = &s->gb;
- int i, j;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int cbp = 0; /* cbp decoding stuff */
- int mqdiff, mquant; /* MB quantization */
- int ttmb = v->ttfrm; /* MB Transform type */
-
- static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
- offset_table[6] = { 0, 1, 3, 7, 15, 31 };
- int mb_has_coeffs = 0; /* last_flag */
- int index, index1; /* LUT indexes */
- int val, sign; /* temp values */
- int first_block = 1;
- int dst_idx, off;
- int skipped, direct;
- int dmv_x[2], dmv_y[2];
- int bmvtype = BMV_TYPE_BACKWARD;
-
- mquant = v->pq; /* Loosy initialization */
- s->mb_intra = 0;
-
- if (v->dmb_is_raw)
- direct = get_bits1(gb);
- else
- direct = v->direct_mb_plane[mb_pos];
- if (v->skip_is_raw)
- skipped = get_bits1(gb);
- else
- skipped = v->s.mbskip_table[mb_pos];
-
- s->dsp.clear_blocks(s->block[0]);
- dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
- for(i = 0; i < 6; i++) {
- v->mb_type[0][s->block_index[i]] = 0;
- s->dc_val[0][s->block_index[i]] = 0;
- }
- s->current_picture.qscale_table[mb_pos] = 0;
-
- if (!direct) {
- if (!skipped) {
- GET_MVDATA(dmv_x[0], dmv_y[0]);
- dmv_x[1] = dmv_x[0];
- dmv_y[1] = dmv_y[0];
- }
- if(skipped || !s->mb_intra) {
- bmvtype = decode012(gb);
- switch(bmvtype) {
- case 0:
- bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
- break;
- case 1:
- bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
- break;
- case 2:
- bmvtype = BMV_TYPE_INTERPOLATED;
- dmv_x[0] = dmv_y[0] = 0;
- }
- }
- }
- for(i = 0; i < 6; i++)
- v->mb_type[0][s->block_index[i]] = s->mb_intra;
-
- if (skipped) {
- if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
- return;
- }
- if (direct) {
- cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- GET_MQUANT();
- s->mb_intra = 0;
- mb_has_coeffs = 0;
- s->current_picture.qscale_table[mb_pos] = mquant;
- if(!v->ttmbf)
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
- dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
- } else {
- if(!mb_has_coeffs && !s->mb_intra) {
- /* no coded blocks - effectively skipped */
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
- return;
- }
- if(s->mb_intra && !mb_has_coeffs) {
- GET_MQUANT();
- s->current_picture.qscale_table[mb_pos] = mquant;
- s->ac_pred = get_bits1(gb);
- cbp = 0;
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- } else {
- if(bmvtype == BMV_TYPE_INTERPOLATED) {
- GET_MVDATA(dmv_x[0], dmv_y[0]);
- if(!mb_has_coeffs) {
- /* interpolated skipped block */
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
- return;
- }
- }
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- if(!s->mb_intra) {
- vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
- }
- if(s->mb_intra)
- s->ac_pred = get_bits1(gb);
- cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- GET_MQUANT();
- s->current_picture.qscale_table[mb_pos] = mquant;
- if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
- }
- }
- dst_idx = 0;
- for (i=0; i<6; i++)
- {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- v->mb_type[0][s->block_index[i]] = s->mb_intra;
- if(s->mb_intra) {
- /* check if prediction blocks A and C are available */
- v->a_avail = v->c_avail = 0;
- if(i == 2 || i == 3 || !s->first_slice_line)
- v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
- if(i == 1 || i == 3 || s->mb_x)
- v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
- vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
- if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
- s->dsp.vc1_inv_trans_8x8(s->block[i]);
- if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
- s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
- } else if(val) {
- vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), 0, 0, 0);
- if(!v->ttmbf && ttmb < 8) ttmb = -1;
- first_block = 0;
- }
- }
-}
-
-/** Decode blocks of I-frame
- */
-static void vc1_decode_i_blocks(VC1Context *v)
-{
- int k, j;
- MpegEncContext *s = &v->s;
- int cbp, val;
- uint8_t *coded_val;
- int mb_pos;
-
- /* select codingmode used for VLC tables selection */
- switch(v->y_ac_table_index){
- case 0:
- v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
- break;
- case 1:
- v->codingset = CS_HIGH_MOT_INTRA;
- break;
- case 2:
- v->codingset = CS_MID_RATE_INTRA;
- break;
- }
-
- switch(v->c_ac_table_index){
- case 0:
- v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
- break;
- case 1:
- v->codingset2 = CS_HIGH_MOT_INTER;
- break;
- case 2:
- v->codingset2 = CS_MID_RATE_INTER;
- break;
- }
-
- /* Set DC scale - y and c use the same */
- s->y_dc_scale = s->y_dc_scale_table[v->pq];
- s->c_dc_scale = s->c_dc_scale_table[v->pq];
-
- //do frame decode
- s->mb_x = s->mb_y = 0;
- s->mb_intra = 1;
- s->first_slice_line = 1;
- for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
- for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
- ff_init_block_index(s);
- ff_update_block_index(s);
- s->dsp.clear_blocks(s->block[0]);
- mb_pos = s->mb_x + s->mb_y * s->mb_width;
- s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
- s->current_picture.qscale_table[mb_pos] = v->pq;
- s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
- s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
-
- // do actual MB decoding and displaying
- cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
- v->s.ac_pred = get_bits1(&v->s.gb);
-
- for(k = 0; k < 6; k++) {
- val = ((cbp >> (5 - k)) & 1);
-
- if (k < 4) {
- int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
- val = val ^ pred;
- *coded_val = val;
- }
- cbp |= val << (5 - k);
-
- vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
-
- s->dsp.vc1_inv_trans_8x8(s->block[k]);
- if(v->pq >= 9 && v->overlap) {
- for(j = 0; j < 64; j++) s->block[k][j] += 128;
- }
- }
-
- vc1_put_block(v, s->block);
- if(v->pq >= 9 && v->overlap) {
- if(s->mb_x) {
- s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
- s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
- if(!(s->flags & CODEC_FLAG_GRAY)) {
- s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
- s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
- }
- }
- s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
- s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
- if(!s->first_slice_line) {
- s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
- s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
- if(!(s->flags & CODEC_FLAG_GRAY)) {
- s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
- s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
- }
- }
- s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
- s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
- }
- if(v->s.loop_filter) vc1_loop_filter_iblk(s, s->current_picture.qscale_table[mb_pos]);
-
- if(get_bits_count(&s->gb) > v->bits) {
- ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
- av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
- return;
- }
- }
- ff_draw_horiz_band(s, s->mb_y * 16, 16);
- s->first_slice_line = 0;
- }
- ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
-}
-
-/** Decode blocks of I-frame for advanced profile
- */
-static void vc1_decode_i_blocks_adv(VC1Context *v)
-{
- int k, j;
- MpegEncContext *s = &v->s;
- int cbp, val;
- uint8_t *coded_val;
- int mb_pos;
- int mquant = v->pq;
- int mqdiff;
- int overlap;
- GetBitContext *gb = &s->gb;
-
- /* select codingmode used for VLC tables selection */
- switch(v->y_ac_table_index){
- case 0:
- v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
- break;
- case 1:
- v->codingset = CS_HIGH_MOT_INTRA;
- break;
- case 2:
- v->codingset = CS_MID_RATE_INTRA;
- break;
- }
-
- switch(v->c_ac_table_index){
- case 0:
- v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
- break;
- case 1:
- v->codingset2 = CS_HIGH_MOT_INTER;
- break;
- case 2:
- v->codingset2 = CS_MID_RATE_INTER;
- break;
- }
-
- //do frame decode
- s->mb_x = s->mb_y = 0;
- s->mb_intra = 1;
- s->first_slice_line = 1;
- for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
- for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
- ff_init_block_index(s);
- ff_update_block_index(s);
- s->dsp.clear_blocks(s->block[0]);
- mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
- s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
- s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
-
- // do actual MB decoding and displaying
- cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
- if(v->acpred_is_raw)
- v->s.ac_pred = get_bits1(&v->s.gb);
- else
- v->s.ac_pred = v->acpred_plane[mb_pos];
-
- if(v->condover == CONDOVER_SELECT) {
- if(v->overflg_is_raw)
- overlap = get_bits1(&v->s.gb);
- else
- overlap = v->over_flags_plane[mb_pos];
- } else
- overlap = (v->condover == CONDOVER_ALL);
-
- GET_MQUANT();
-
- s->current_picture.qscale_table[mb_pos] = mquant;
- /* Set DC scale - y and c use the same */
- s->y_dc_scale = s->y_dc_scale_table[mquant];
- s->c_dc_scale = s->c_dc_scale_table[mquant];
-
- for(k = 0; k < 6; k++) {
- val = ((cbp >> (5 - k)) & 1);
-
- if (k < 4) {
- int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
- val = val ^ pred;
- *coded_val = val;
- }
- cbp |= val << (5 - k);
-
- v->a_avail = !s->first_slice_line || (k==2 || k==3);
- v->c_avail = !!s->mb_x || (k==1 || k==3);
-
- vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
-
- s->dsp.vc1_inv_trans_8x8(s->block[k]);
- for(j = 0; j < 64; j++) s->block[k][j] += 128;
- }
-
- vc1_put_block(v, s->block);
- if(overlap) {
- if(s->mb_x) {
- s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
- s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
- if(!(s->flags & CODEC_FLAG_GRAY)) {
- s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
- s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
- }
- }
- s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
- s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
- if(!s->first_slice_line) {
- s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
- s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
- if(!(s->flags & CODEC_FLAG_GRAY)) {
- s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
- s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
- }
- }
- s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
- s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
- }
- if(v->s.loop_filter) vc1_loop_filter_iblk(s, s->current_picture.qscale_table[mb_pos]);
-
- if(get_bits_count(&s->gb) > v->bits) {
- ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
- av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
- return;
- }
- }
- ff_draw_horiz_band(s, s->mb_y * 16, 16);
- s->first_slice_line = 0;
- }
- ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
-}
-
-static void vc1_decode_p_blocks(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
-
- /* select codingmode used for VLC tables selection */
- switch(v->c_ac_table_index){
- case 0:
- v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
- break;
- case 1:
- v->codingset = CS_HIGH_MOT_INTRA;
- break;
- case 2:
- v->codingset = CS_MID_RATE_INTRA;
- break;
- }
-
- switch(v->c_ac_table_index){
- case 0:
- v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
- break;
- case 1:
- v->codingset2 = CS_HIGH_MOT_INTER;
- break;
- case 2:
- v->codingset2 = CS_MID_RATE_INTER;
- break;
- }
-
- s->first_slice_line = 1;
- memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride);
- for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
- for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
- ff_init_block_index(s);
- ff_update_block_index(s);
- s->dsp.clear_blocks(s->block[0]);
-
- vc1_decode_p_mb(v);
- if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
- ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
- av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
- return;
- }
- }
- memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0])*s->mb_stride);
- ff_draw_horiz_band(s, s->mb_y * 16, 16);
- s->first_slice_line = 0;
- }
- ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
-}
-
-static void vc1_decode_b_blocks(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
-
- /* select codingmode used for VLC tables selection */
- switch(v->c_ac_table_index){
- case 0:
- v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
- break;
- case 1:
- v->codingset = CS_HIGH_MOT_INTRA;
- break;
- case 2:
- v->codingset = CS_MID_RATE_INTRA;
- break;
- }
-
- switch(v->c_ac_table_index){
- case 0:
- v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
- break;
- case 1:
- v->codingset2 = CS_HIGH_MOT_INTER;
- break;
- case 2:
- v->codingset2 = CS_MID_RATE_INTER;
- break;
- }
-
- s->first_slice_line = 1;
- for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
- for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
- ff_init_block_index(s);
- ff_update_block_index(s);
- s->dsp.clear_blocks(s->block[0]);
-
- vc1_decode_b_mb(v);
- if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
- ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
- av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
- return;
- }
- if(v->s.loop_filter) vc1_loop_filter_iblk(s, s->current_picture.qscale_table[s->mb_x + s->mb_y *s->mb_stride]);
- }
- ff_draw_horiz_band(s, s->mb_y * 16, 16);
- s->first_slice_line = 0;
- }
- ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
-}
-
-static void vc1_decode_skip_blocks(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
-
- ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
- s->first_slice_line = 1;
- for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
- s->mb_x = 0;
- ff_init_block_index(s);
- ff_update_block_index(s);
- memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
- memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
- memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
- ff_draw_horiz_band(s, s->mb_y * 16, 16);
- s->first_slice_line = 0;
- }
- s->pict_type = FF_P_TYPE;
-}
-
-static void vc1_decode_blocks(VC1Context *v)
-{
-
- v->s.esc3_level_length = 0;
- if(v->x8_type){
- ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) );
- }else{
-
- switch(v->s.pict_type) {
- case FF_I_TYPE:
- if(v->profile == PROFILE_ADVANCED)
- vc1_decode_i_blocks_adv(v);
- else
- vc1_decode_i_blocks(v);
- break;
- case FF_P_TYPE:
- if(v->p_frame_skipped)
- vc1_decode_skip_blocks(v);
- else
- vc1_decode_p_blocks(v);
- break;
- case FF_B_TYPE:
- if(v->bi_type){
- if(v->profile == PROFILE_ADVANCED)
- vc1_decode_i_blocks_adv(v);
- else
- vc1_decode_i_blocks(v);
- }else
- vc1_decode_b_blocks(v);
- break;
- }
- }
-}
-
-/** Find VC-1 marker in buffer
- * @return position where next marker starts or end of buffer if no marker found
- */
-static av_always_inline const uint8_t* find_next_marker(const uint8_t *src, const uint8_t *end)
-{
- uint32_t mrk = 0xFFFFFFFF;
-
- if(end-src < 4) return end;
- while(src < end){
- mrk = (mrk << 8) | *src++;
- if(IS_MARKER(mrk))
- return src-4;
- }
- return end;
-}
-
-static av_always_inline int vc1_unescape_buffer(const uint8_t *src, int size, uint8_t *dst)
-{
- int dsize = 0, i;
-
- if(size < 4){
- for(dsize = 0; dsize < size; dsize++) *dst++ = *src++;
- return size;
- }
- for(i = 0; i < size; i++, src++) {
- if(src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {
- dst[dsize++] = src[1];
- src++;
- i++;
- } else
- dst[dsize++] = *src;
- }
- return dsize;
-}
-
-/** Initialize a VC1/WMV3 decoder
- * @todo TODO: Handle VC-1 IDUs (Transport level?)
- * @todo TODO: Decypher remaining bits in extra_data
- */
-static av_cold int vc1_decode_init(AVCodecContext *avctx)
-{
- VC1Context *v = avctx->priv_data;
- MpegEncContext *s = &v->s;
- GetBitContext gb;
-
- if (!avctx->extradata_size || !avctx->extradata) return -1;
- if (!(avctx->flags & CODEC_FLAG_GRAY))
- avctx->pix_fmt = PIX_FMT_YUV420P;
- else
- avctx->pix_fmt = PIX_FMT_GRAY8;
- v->s.avctx = avctx;
- avctx->flags |= CODEC_FLAG_EMU_EDGE;
- v->s.flags |= CODEC_FLAG_EMU_EDGE;
-
- if(avctx->idct_algo==FF_IDCT_AUTO){
- avctx->idct_algo=FF_IDCT_WMV2;
- }
-
- if(ff_h263_decode_init(avctx) < 0)
- return -1;
- if (vc1_init_common(v) < 0) return -1;
-
- avctx->coded_width = avctx->width;
- avctx->coded_height = avctx->height;
- if (avctx->codec_id == CODEC_ID_WMV3)
- {
- int count = 0;
-
- // looks like WMV3 has a sequence header stored in the extradata
- // advanced sequence header may be before the first frame
- // the last byte of the extradata is a version number, 1 for the
- // samples we can decode
-
- init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
-
- if (decode_sequence_header(avctx, &gb) < 0)
- return -1;
-
- count = avctx->extradata_size*8 - get_bits_count(&gb);
- if (count>0)
- {
- av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
- count, get_bits(&gb, count));
- }
- else if (count < 0)
- {
- av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
- }
- } else { // VC1/WVC1
- const uint8_t *start = avctx->extradata;
- uint8_t *end = avctx->extradata + avctx->extradata_size;
- const uint8_t *next;
- int size, buf2_size;
- uint8_t *buf2 = NULL;
- int seq_initialized = 0, ep_initialized = 0;
-
- if(avctx->extradata_size < 16) {
- av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
- return -1;
- }
-
- buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
- if(start[0]) start++; // in WVC1 extradata first byte is its size
- next = start;
- for(; next < end; start = next){
- next = find_next_marker(start + 4, end);
- size = next - start - 4;
- if(size <= 0) continue;
- buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
- init_get_bits(&gb, buf2, buf2_size * 8);
- switch(AV_RB32(start)){
- case VC1_CODE_SEQHDR:
- if(decode_sequence_header(avctx, &gb) < 0){
- av_free(buf2);
- return -1;
- }
- seq_initialized = 1;
- break;
- case VC1_CODE_ENTRYPOINT:
- if(decode_entry_point(avctx, &gb) < 0){
- av_free(buf2);
- return -1;
- }
- ep_initialized = 1;
- break;
- }
- }
- av_free(buf2);
- if(!seq_initialized || !ep_initialized){
- av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
- return -1;
- }
- }
- avctx->has_b_frames= !!(avctx->max_b_frames);
- s->low_delay = !avctx->has_b_frames;
-
- s->mb_width = (avctx->coded_width+15)>>4;
- s->mb_height = (avctx->coded_height+15)>>4;
-
- /* Allocate mb bitplanes */
- v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
- v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
- v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
- v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
-
- v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
- v->cbp = v->cbp_base + s->mb_stride;
-
- /* allocate block type info in that way so it could be used with s->block_index[] */
- v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
- v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
- v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
- v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
-
- /* Init coded blocks info */
- if (v->profile == PROFILE_ADVANCED)
- {
-// if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
-// return -1;
-// if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
-// return -1;
- }
-
- ff_intrax8_common_init(&v->x8,s);
- return 0;
-}
-
-
-/** Decode a VC1/WMV3 frame
- * @todo TODO: Handle VC-1 IDUs (Transport level?)
- */
-static int vc1_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- const uint8_t *buf, int buf_size)
-{
- VC1Context *v = avctx->priv_data;
- MpegEncContext *s = &v->s;
- AVFrame *pict = data;
- uint8_t *buf2 = NULL;
- const uint8_t *buf_vdpau = buf;
-
- /* no supplementary picture */
- if (buf_size == 0) {
- /* special case for last picture */
- if (s->low_delay==0 && s->next_picture_ptr) {
- *pict= *(AVFrame*)s->next_picture_ptr;
- s->next_picture_ptr= NULL;
-
- *data_size = sizeof(AVFrame);
- }
-
- return 0;
- }
-
- /* We need to set current_picture_ptr before reading the header,
- * otherwise we cannot store anything in there. */
- if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
- int i= ff_find_unused_picture(s, 0);
- s->current_picture_ptr= &s->picture[i];
- }
-
- if (s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
- if (v->profile < PROFILE_ADVANCED)
- avctx->pix_fmt = PIX_FMT_VDPAU_WMV3;
- else
- avctx->pix_fmt = PIX_FMT_VDPAU_VC1;
- }
-
- //for advanced profile we may need to parse and unescape data
- if (avctx->codec_id == CODEC_ID_VC1) {
- int buf_size2 = 0;
- buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
-
- if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
- const uint8_t *start, *end, *next;
- int size;
-
- next = buf;
- for(start = buf, end = buf + buf_size; next < end; start = next){
- next = find_next_marker(start + 4, end);
- size = next - start - 4;
- if(size <= 0) continue;
- switch(AV_RB32(start)){
- case VC1_CODE_FRAME:
- if (s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
- buf_vdpau = start;
- buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
- break;
- case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
- buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
- init_get_bits(&s->gb, buf2, buf_size2*8);
- decode_entry_point(avctx, &s->gb);
- break;
- case VC1_CODE_SLICE:
- av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
- av_free(buf2);
- return -1;
- }
- }
- }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
- const uint8_t *divider;
-
- divider = find_next_marker(buf, buf + buf_size);
- if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
- av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
- av_free(buf2);
- return -1;
- }
-
- buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
- // TODO
- av_free(buf2);return -1;
- }else{
- buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
- }
- init_get_bits(&s->gb, buf2, buf_size2*8);
- } else
- init_get_bits(&s->gb, buf, buf_size*8);
- // do parse frame header
- if(v->profile < PROFILE_ADVANCED) {
- if(vc1_parse_frame_header(v, &s->gb) == -1) {
- av_free(buf2);
- return -1;
- }
- } else {
- if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
- av_free(buf2);
- return -1;
- }
- }
-
- if(s->pict_type != FF_I_TYPE && !v->res_rtm_flag){
- av_free(buf2);
- return -1;
- }
-
- // for hurry_up==5
- s->current_picture.pict_type= s->pict_type;
- s->current_picture.key_frame= s->pict_type == FF_I_TYPE;
-
- /* skip B-frames if we don't have reference frames */
- if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)){
- av_free(buf2);
- return -1;//buf_size;
- }
- /* skip b frames if we are in a hurry */
- if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return -1;//buf_size;
- if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE)
- || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE)
- || avctx->skip_frame >= AVDISCARD_ALL) {
- av_free(buf2);
- return buf_size;
- }
- /* skip everything if we are in a hurry>=5 */
- if(avctx->hurry_up>=5) {
- av_free(buf2);
- return -1;//buf_size;
- }
-
- if(s->next_p_frame_damaged){
- if(s->pict_type==FF_B_TYPE)
- return buf_size;
- else
- s->next_p_frame_damaged=0;
- }
-
- if(MPV_frame_start(s, avctx) < 0) {
- av_free(buf2);
- return -1;
- }
-
- s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
- s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
-
- if ((CONFIG_VC1_VDPAU_DECODER || CONFIG_WMV3_VDPAU_DECODER)
- &&s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
- ff_vdpau_vc1_decode_picture(s, buf_vdpau, (buf + buf_size) - buf_vdpau);
- else {
- ff_er_frame_start(s);
-
- v->bits = buf_size * 8;
- vc1_decode_blocks(v);
-//av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
-// if(get_bits_count(&s->gb) > buf_size * 8)
-// return -1;
- ff_er_frame_end(s);
- }
-
- MPV_frame_end(s);
-
-assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
-assert(s->current_picture.pict_type == s->pict_type);
- if (s->pict_type == FF_B_TYPE || s->low_delay) {
- *pict= *(AVFrame*)s->current_picture_ptr;
- } else if (s->last_picture_ptr != NULL) {
- *pict= *(AVFrame*)s->last_picture_ptr;
- }
-
- if(s->last_picture_ptr || s->low_delay){
- *data_size = sizeof(AVFrame);
- ff_print_debug_info(s, pict);
- }
-
- /* Return the Picture timestamp as the frame number */
- /* we subtract 1 because it is added on utils.c */
- avctx->frame_number = s->picture_number - 1;
-
- av_free(buf2);
- return buf_size;
-}
-
-
-/** Close a VC1/WMV3 decoder
- * @warning Initial try at using MpegEncContext stuff
- */
-static av_cold int vc1_decode_end(AVCodecContext *avctx)
-{
- VC1Context *v = avctx->priv_data;