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Diffstat (limited to 'contrib/ffmpeg/libavcodec/rv34.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/rv34.c | 1299 |
1 files changed, 0 insertions, 1299 deletions
diff --git a/contrib/ffmpeg/libavcodec/rv34.c b/contrib/ffmpeg/libavcodec/rv34.c deleted file mode 100644 index 5b5849896..000000000 --- a/contrib/ffmpeg/libavcodec/rv34.c +++ /dev/null @@ -1,1299 +0,0 @@ -/* - * RV30/40 decoder common data - * Copyright (c) 2007 Mike Melanson, Konstantin Shishkov - * - * 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 - */ - -/** - * @file rv34.c - * RV30/40 decoder common data - */ - -#include "avcodec.h" -#include "dsputil.h" -#include "mpegvideo.h" -#include "golomb.h" -#include "rectangle.h" - -#include "rv34vlc.h" -#include "rv34data.h" -#include "rv34.h" - -//#define DEBUG - -/** translation of RV30/40 macroblock types to lavc ones */ -static const int rv34_mb_type_to_lavc[12] = { - MB_TYPE_INTRA, - MB_TYPE_INTRA16x16, - MB_TYPE_16x16 | MB_TYPE_L0, - MB_TYPE_8x8 | MB_TYPE_L0, - MB_TYPE_16x16 | MB_TYPE_L0, - MB_TYPE_16x16 | MB_TYPE_L1, - MB_TYPE_SKIP, - MB_TYPE_DIRECT2 | MB_TYPE_16x16, - MB_TYPE_16x8 | MB_TYPE_L0, - MB_TYPE_8x16 | MB_TYPE_L0, - MB_TYPE_16x16 | MB_TYPE_L0L1, - MB_TYPE_16x16 | MB_TYPE_L0 -}; - - -static RV34VLC intra_vlcs[NUM_INTRA_TABLES], inter_vlcs[NUM_INTER_TABLES]; - -/** - * @defgroup vlc RV30/40 VLC generating functions - * @{ - */ - -/** - * Generate VLC from codeword lengths. - * @param bits codeword lengths (zeroes are accepted) - * @param size length of input data - * @param insyms symbols for input codes (NULL for default ones) - */ -static void rv34_gen_vlc(const uint8_t *bits, int size, VLC *vlc, const uint8_t *insyms) -{ - int i; - int counts[17] = {0}, codes[17]; - uint16_t cw[size], syms[size]; - uint8_t bits2[size]; - int maxbits = 0, realsize = 0; - - for(i = 0; i < size; i++){ - if(bits[i]){ - bits2[realsize] = bits[i]; - syms[realsize] = insyms ? insyms[i] : i; - realsize++; - maxbits = FFMAX(maxbits, bits[i]); - counts[bits[i]]++; - } - } - - codes[0] = 0; - for(i = 0; i < 16; i++) - codes[i+1] = (codes[i] + counts[i]) << 1; - for(i = 0; i < realsize; i++) - cw[i] = codes[bits2[i]]++; - - init_vlc_sparse(vlc, FFMIN(maxbits, 9), realsize, - bits2, 1, 1, - cw, 2, 2, - syms, 2, 2, INIT_VLC_USE_STATIC); -} - -/** - * Initialize all tables. - */ -static void rv34_init_tables() -{ - int i, j, k; - - for(i = 0; i < NUM_INTRA_TABLES; i++){ - for(j = 0; j < 2; j++){ - rv34_gen_vlc(rv34_table_intra_cbppat [i][j], CBPPAT_VLC_SIZE, &intra_vlcs[i].cbppattern[j], NULL); - rv34_gen_vlc(rv34_table_intra_secondpat[i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].second_pattern[j], NULL); - rv34_gen_vlc(rv34_table_intra_thirdpat [i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].third_pattern[j], NULL); - for(k = 0; k < 4; k++) - rv34_gen_vlc(rv34_table_intra_cbp[i][j+k*2], CBP_VLC_SIZE, &intra_vlcs[i].cbp[j][k], rv34_cbp_code); - } - for(j = 0; j < 4; j++) - rv34_gen_vlc(rv34_table_intra_firstpat[i][j], FIRSTBLK_VLC_SIZE, &intra_vlcs[i].first_pattern[j], NULL); - rv34_gen_vlc(rv34_intra_coeff[i], COEFF_VLC_SIZE, &intra_vlcs[i].coefficient, NULL); - } - - for(i = 0; i < NUM_INTER_TABLES; i++){ - rv34_gen_vlc(rv34_inter_cbppat[i], CBPPAT_VLC_SIZE, &inter_vlcs[i].cbppattern[0], NULL); - for(j = 0; j < 4; j++) - rv34_gen_vlc(rv34_inter_cbp[i][j], CBP_VLC_SIZE, &inter_vlcs[i].cbp[0][j], rv34_cbp_code); - for(j = 0; j < 2; j++){ - rv34_gen_vlc(rv34_table_inter_firstpat [i][j], FIRSTBLK_VLC_SIZE, &inter_vlcs[i].first_pattern[j], NULL); - rv34_gen_vlc(rv34_table_inter_secondpat[i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].second_pattern[j], NULL); - rv34_gen_vlc(rv34_table_inter_thirdpat [i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].third_pattern[j], NULL); - } - rv34_gen_vlc(rv34_inter_coeff[i], COEFF_VLC_SIZE, &inter_vlcs[i].coefficient, NULL); - } -} - -/** @} */ // vlc group - - -/** - * @defgroup transform RV30/40 inverse transform functions - * @{ - */ - -static av_always_inline void rv34_row_transform(int temp[16], DCTELEM *block) -{ - int i; - - for(i=0; i<4; i++){ - const int z0= 13*(block[i+8*0] + block[i+8*2]); - const int z1= 13*(block[i+8*0] - block[i+8*2]); - const int z2= 7* block[i+8*1] - 17*block[i+8*3]; - const int z3= 17* block[i+8*1] + 7*block[i+8*3]; - - temp[4*i+0]= z0+z3; - temp[4*i+1]= z1+z2; - temp[4*i+2]= z1-z2; - temp[4*i+3]= z0-z3; - } -} - -/** - * Real Video 3.0/4.0 inverse transform - * Code is almost the same as in SVQ3, only scaling is different. - */ -static void rv34_inv_transform(DCTELEM *block){ - int temp[16]; - int i; - - rv34_row_transform(temp, block); - - for(i=0; i<4; i++){ - const int z0= 13*(temp[4*0+i] + temp[4*2+i]) + 0x200; - const int z1= 13*(temp[4*0+i] - temp[4*2+i]) + 0x200; - const int z2= 7* temp[4*1+i] - 17*temp[4*3+i]; - const int z3= 17* temp[4*1+i] + 7*temp[4*3+i]; - - block[i*8+0]= (z0 + z3)>>10; - block[i*8+1]= (z1 + z2)>>10; - block[i*8+2]= (z1 - z2)>>10; - block[i*8+3]= (z0 - z3)>>10; - } - -} - -/** - * RealVideo 3.0/4.0 inverse transform for DC block - * - * Code is almost the same as rv34_inv_transform() - * but final coefficients are multiplied by 1.5 and have no rounding. - */ -static void rv34_inv_transform_noround(DCTELEM *block){ - int temp[16]; - int i; - - rv34_row_transform(temp, block); - - for(i=0; i<4; i++){ - const int z0= 13*(temp[4*0+i] + temp[4*2+i]); - const int z1= 13*(temp[4*0+i] - temp[4*2+i]); - const int z2= 7* temp[4*1+i] - 17*temp[4*3+i]; - const int z3= 17* temp[4*1+i] + 7*temp[4*3+i]; - - block[i*8+0]= ((z0 + z3)*3)>>11; - block[i*8+1]= ((z1 + z2)*3)>>11; - block[i*8+2]= ((z1 - z2)*3)>>11; - block[i*8+3]= ((z0 - z3)*3)>>11; - } - -} - -/** @} */ // transform - - -/** - * @defgroup block RV30/40 4x4 block decoding functions - * @{ - */ - -/** - * Decode coded block pattern. - */ -static int rv34_decode_cbp(GetBitContext *gb, RV34VLC *vlc, int table) -{ - int pattern, code, cbp=0; - int ones; - static const int cbp_masks[3] = {0x100000, 0x010000, 0x110000}; - static const int shifts[4] = { 0, 2, 8, 10 }; - int *curshift = shifts; - int i, t, mask; - - code = get_vlc2(gb, vlc->cbppattern[table].table, 9, 2); - pattern = code & 0xF; - code >>= 4; - - ones = rv34_count_ones[pattern]; - - for(mask = 8; mask; mask >>= 1, curshift++){ - if(pattern & mask) - cbp |= get_vlc2(gb, vlc->cbp[table][ones].table, vlc->cbp[table][ones].bits, 1) << curshift[0]; - } - - for(i = 0; i < 4; i++){ - t = modulo_three_table[code][i]; - if(t == 1) - cbp |= cbp_masks[get_bits1(gb)] << i; - if(t == 2) - cbp |= cbp_masks[2] << i; - } - return cbp; -} - -/** - * Get one coefficient value from the bistream and store it. - */ -static inline void decode_coeff(DCTELEM *dst, int coef, int esc, GetBitContext *gb, VLC* vlc) -{ - if(coef){ - if(coef == esc){ - coef = get_vlc2(gb, vlc->table, 9, 2); - if(coef > 23){ - coef -= 23; - coef = 22 + ((1 << coef) | get_bits(gb, coef)); - } - coef += esc; - } - if(get_bits1(gb)) - coef = -coef; - *dst = coef; - } -} - -/** - * Decode 2x2 subblock of coefficients. - */ -static inline void decode_subblock(DCTELEM *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc) -{ - int coeffs[4]; - - coeffs[0] = modulo_three_table[code][0]; - coeffs[1] = modulo_three_table[code][1]; - coeffs[2] = modulo_three_table[code][2]; - coeffs[3] = modulo_three_table[code][3]; - decode_coeff(dst , coeffs[0], 3, gb, vlc); - if(is_block2){ - decode_coeff(dst+8, coeffs[1], 2, gb, vlc); - decode_coeff(dst+1, coeffs[2], 2, gb, vlc); - }else{ - decode_coeff(dst+1, coeffs[1], 2, gb, vlc); - decode_coeff(dst+8, coeffs[2], 2, gb, vlc); - } - decode_coeff(dst+9, coeffs[3], 2, gb, vlc); -} - -/** - * Decode coefficients for 4x4 block. - * - * This is done by filling 2x2 subblocks with decoded coefficients - * in this order (the same for subblocks and subblock coefficients): - * o--o - * / - * / - * o--o - */ - -static inline void rv34_decode_block(DCTELEM *dst, GetBitContext *gb, RV34VLC *rvlc, int fc, int sc) -{ - int code, pattern; - - code = get_vlc2(gb, rvlc->first_pattern[fc].table, 9, 2); - - pattern = code & 0x7; - - code >>= 3; - decode_subblock(dst, code, 0, gb, &rvlc->coefficient); - - if(pattern & 4){ - code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2); - decode_subblock(dst + 2, code, 0, gb, &rvlc->coefficient); - } - if(pattern & 2){ // Looks like coefficients 1 and 2 are swapped for this block - code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2); - decode_subblock(dst + 8*2, code, 1, gb, &rvlc->coefficient); - } - if(pattern & 1){ - code = get_vlc2(gb, rvlc->third_pattern[sc].table, 9, 2); - decode_subblock(dst + 8*2+2, code, 0, gb, &rvlc->coefficient); - } - -} - -/** - * Dequantize ordinary 4x4 block. - * @todo optimize - */ -static inline void rv34_dequant4x4(DCTELEM *block, int Qdc, int Q) -{ - int i, j; - - block[0] = (block[0] * Qdc + 8) >> 4; - for(i = 0; i < 4; i++) - for(j = !i; j < 4; j++) - block[j + i*8] = (block[j + i*8] * Q + 8) >> 4; -} - -/** - * Dequantize 4x4 block of DC values for 16x16 macroblock. - * @todo optimize - */ -static inline void rv34_dequant4x4_16x16(DCTELEM *block, int Qdc, int Q) -{ - int i; - - for(i = 0; i < 3; i++) - block[rv34_dezigzag[i]] = (block[rv34_dezigzag[i]] * Qdc + 8) >> 4; - for(; i < 16; i++) - block[rv34_dezigzag[i]] = (block[rv34_dezigzag[i]] * Q + 8) >> 4; -} -/** @} */ //block functions - - -/** - * @defgroup bitstream RV30/40 bitstream parsing - * @{ - */ - -/** - * Decode starting slice position. - * @todo Maybe replace with ff_h263_decode_mba() ? - */ -int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size) -{ - int i; - for(i = 0; i < 5; i++) - if(rv34_mb_max_sizes[i] > mb_size) - break; - return rv34_mb_bits_sizes[i]; -} - -/** - * Select VLC set for decoding from current quantizer, modifier and frame type. - */ -static inline RV34VLC* choose_vlc_set(int quant, int mod, int type) -{ - if(mod == 2 && quant < 19) quant += 10; - else if(mod && quant < 26) quant += 5; - return type ? &inter_vlcs[rv34_quant_to_vlc_set[1][av_clip(quant, 0, 30)]] - : &intra_vlcs[rv34_quant_to_vlc_set[0][av_clip(quant, 0, 30)]]; -} - -/** - * Decode quantizer difference and return modified quantizer. - */ -static inline int rv34_decode_dquant(GetBitContext *gb, int quant) -{ - if(get_bits1(gb)) - return rv34_dquant_tab[get_bits1(gb)][quant]; - else - return get_bits(gb, 5); -} - -/** @} */ //bitstream functions - -/** - * @defgroup mv motion vector related code (prediction, reconstruction, motion compensation) - * @{ - */ - -/** macroblock partition width in 8x8 blocks */ -static const uint8_t part_sizes_w[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2 }; - -/** macroblock partition height in 8x8 blocks */ -static const uint8_t part_sizes_h[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2 }; - -/** availability index for subblocks */ -static const uint8_t avail_indexes[4] = { 5, 6, 9, 10 }; - -/** - * motion vector prediction - * - * Motion prediction performed for the block by using median prediction of - * motion vectors from the left, top and right top blocks but in corner cases - * some other vectors may be used instead. - */ -static void rv34_pred_mv(RV34DecContext *r, int block_type, int subblock_no, int dmv_no) -{ - MpegEncContext *s = &r->s; - int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; - int A[2] = {0}, B[2], C[2]; - int i, j; - int mx, my; - int avail_index = avail_indexes[subblock_no]; - int c_off = part_sizes_w[block_type]; - - mv_pos += (subblock_no & 1) + (subblock_no >> 1)*s->b8_stride; - if(subblock_no == 3) - c_off = -1; - - if(r->avail_cache[avail_index - 1]){ - A[0] = s->current_picture_ptr->motion_val[0][mv_pos-1][0]; - A[1] = s->current_picture_ptr->motion_val[0][mv_pos-1][1]; - } - if(r->avail_cache[avail_index - 4]){ - B[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][0]; - B[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][1]; - }else{ - B[0] = A[0]; - B[1] = A[1]; - } - if(!r->avail_cache[avail_index - 4 + c_off]){ - if(r->avail_cache[avail_index - 4] && (r->avail_cache[avail_index - 1] || r->rv30)){ - C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][0]; - C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][1]; - }else{ - C[0] = A[0]; - C[1] = A[1]; - } - }else{ - C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][0]; - C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][1]; - } - mx = mid_pred(A[0], B[0], C[0]); - my = mid_pred(A[1], B[1], C[1]); - mx += r->dmv[dmv_no][0]; - my += r->dmv[dmv_no][1]; - for(j = 0; j < part_sizes_h[block_type]; j++){ - for(i = 0; i < part_sizes_w[block_type]; i++){ - s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][0] = mx; - s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][1] = my; - } - } -} - -/** - * Calculate motion vector component that should be added for direct blocks. - */ -static int calc_add_mv(MpegEncContext *s, int dir, int component) -{ - int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; - int sum; - - sum = (s->next_picture_ptr->motion_val[0][mv_pos][component] + - s->next_picture_ptr->motion_val[0][mv_pos + 1][component] + - s->next_picture_ptr->motion_val[0][mv_pos + s->b8_stride][component] + - s->next_picture_ptr->motion_val[0][mv_pos + s->b8_stride + 1][component]) >> 2; - return dir ? -(sum >> 1) : ((sum + 1) >> 1); -} - -/** - * Predict motion vector for B-frame macroblock. - */ -static inline void rv34_pred_b_vector(int A[2], int B[2], int C[2], - int A_avail, int B_avail, int C_avail, - int *mx, int *my) -{ - if(A_avail + B_avail + C_avail != 3){ - *mx = A[0] + B[0] + C[0]; - *my = A[1] + B[1] + C[1]; - if(A_avail + B_avail + C_avail == 2){ - *mx /= 2; - *my /= 2; - } - }else{ - *mx = mid_pred(A[0], B[0], C[0]); - *my = mid_pred(A[1], B[1], C[1]); - } -} - -/** - * motion vector prediction for B-frames - */ -static void rv34_pred_mv_b(RV34DecContext *r, int block_type, int dir) -{ - MpegEncContext *s = &r->s; - int mb_pos = s->mb_x + s->mb_y * s->mb_stride; - int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; - int A[2], B[2], C[2]; - int has_A = 0, has_B = 0, has_C = 0; - int mx, my; - int i, j; - Picture *cur_pic = s->current_picture_ptr; - const int mask = dir ? MB_TYPE_L1 : MB_TYPE_L0; - int type = cur_pic->mb_type[mb_pos]; - - memset(A, 0, sizeof(A)); - memset(B, 0, sizeof(B)); - memset(C, 0, sizeof(C)); - if((r->avail_cache[5-1] & type) & mask){ - A[0] = cur_pic->motion_val[dir][mv_pos - 1][0]; - A[1] = cur_pic->motion_val[dir][mv_pos - 1][1]; - has_A = 1; - } - if((r->avail_cache[5-4] & type) & mask){ - B[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][0]; - B[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][1]; - has_B = 1; - } - if((r->avail_cache[5-2] & type) & mask){ - C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][0]; - C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][1]; - has_C = 1; - }else if((s->mb_x+1) == s->mb_width && (r->avail_cache[5-5] & type) & mask){ - C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][0]; - C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][1]; - has_C = 1; - } - - rv34_pred_b_vector(A, B, C, has_A, has_B, has_C, &mx, &my); - - mx += r->dmv[dir][0]; - my += r->dmv[dir][1]; - - if(block_type == RV34_MB_B_DIRECT){ - mx += calc_add_mv(s, dir, 0); - my += calc_add_mv(s, dir, 1); - } - for(j = 0; j < 2; j++){ - for(i = 0; i < 2; i++){ - cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][0] = mx; - cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][1] = my; - } - } - if(block_type == RV34_MB_B_BACKWARD || block_type == RV34_MB_B_FORWARD) - fill_rectangle(cur_pic->motion_val[!dir][mv_pos], 2, 2, s->b8_stride, 0, 4); -} - -static const int chroma_coeffs[3] = { 8, 5, 3 }; - -/** - * generic motion compensation function - * - * @param r decoder context - * @param block_type type of the current block - * @param xoff horizontal offset from the start of the current block - * @param yoff vertical offset from the start of the current block - * @param mv_off offset to the motion vector information - * @param width width of the current partition in 8x8 blocks - * @param height height of the current partition in 8x8 blocks - */ -static inline void rv34_mc(RV34DecContext *r, const int block_type, - const int xoff, const int yoff, int mv_off, - const int width, const int height, int dir, - const int thirdpel, - qpel_mc_func (*qpel_mc)[16], - h264_chroma_mc_func (*chroma_mc)) -{ - MpegEncContext *s = &r->s; - uint8_t *Y, *U, *V, *srcY, *srcU, *srcV; - int dxy, mx, my, lx, ly, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y; - int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride + mv_off; - int is16x16 = 1; - - if(thirdpel){ - mx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) / 3 - (1 << 24); - my = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) / 3 - (1 << 24); - lx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) % 3; - ly = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) % 3; - uvmx = chroma_coeffs[(3*(mx&1) + lx) >> 1]; - uvmy = chroma_coeffs[(3*(my&1) + ly) >> 1]; - }else{ - mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] >> 2; - my = s->current_picture_ptr->motion_val[dir][mv_pos][1] >> 2; - lx = s->current_picture_ptr->motion_val[dir][mv_pos][0] & 3; - ly = s->current_picture_ptr->motion_val[dir][mv_pos][1] & 3; - uvmx = mx & 6; - uvmy = my & 6; - } - dxy = ly*4 + lx; - srcY = dir ? s->next_picture_ptr->data[0] : s->last_picture_ptr->data[0]; - srcU = dir ? s->next_picture_ptr->data[1] : s->last_picture_ptr->data[1]; - srcV = dir ? s->next_picture_ptr->data[2] : s->last_picture_ptr->data[2]; - src_x = s->mb_x * 16 + xoff + mx; - src_y = s->mb_y * 16 + yoff + my; - uvsrc_x = s->mb_x * 8 + (xoff >> 1) + (mx >> 1); - uvsrc_y = s->mb_y * 8 + (yoff >> 1) + (my >> 1); - srcY += src_y * s->linesize + src_x; - srcU += uvsrc_y * s->uvlinesize + uvsrc_x; - srcV += uvsrc_y * s->uvlinesize + uvsrc_x; - if( (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 3 - || (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 3){ - uint8_t *uvbuf= s->edge_emu_buffer + 20 * s->linesize; - - srcY -= 2 + 2*s->linesize; - ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, (width<<3)+4, (height<<3)+4, - src_x - 2, src_y - 2, s->h_edge_pos, s->v_edge_pos); - srcY = s->edge_emu_buffer + 2 + 2*s->linesize; - ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, (width<<2)+1, (height<<2)+1, - uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); - ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, (width<<2)+1, (height<<2)+1, - uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); - srcU = uvbuf; - srcV = uvbuf + 16; - } - Y = s->dest[0] + xoff + yoff *s->linesize; - U = s->dest[1] + (xoff>>1) + (yoff>>1)*s->uvlinesize; - V = s->dest[2] + (xoff>>1) + (yoff>>1)*s->uvlinesize; - - if(block_type == RV34_MB_P_16x8){ - qpel_mc[1][dxy](Y, srcY, s->linesize); - Y += 8; - srcY += 8; - }else if(block_type == RV34_MB_P_8x16){ - qpel_mc[1][dxy](Y, srcY, s->linesize); - Y += 8 * s->linesize; - srcY += 8 * s->linesize; - } - is16x16 = (block_type != RV34_MB_P_8x8) && (block_type != RV34_MB_P_16x8) && (block_type != RV34_MB_P_8x16); - qpel_mc[!is16x16][dxy](Y, srcY, s->linesize); - chroma_mc[2-width] (U, srcU, s->uvlinesize, height*4, uvmx, uvmy); - chroma_mc[2-width] (V, srcV, s->uvlinesize, height*4, uvmx, uvmy); -} - -static void rv34_mc_1mv(RV34DecContext *r, const int block_type, - const int xoff, const int yoff, int mv_off, - const int width, const int height, int dir) -{ - rv34_mc(r, block_type, xoff, yoff, mv_off, width, height, dir, r->rv30, - r->rv30 ? r->s.dsp.put_rv30_tpel_pixels_tab - : r->s.dsp.put_h264_qpel_pixels_tab, - r->s.dsp.put_h264_chroma_pixels_tab); -} - -static void rv34_mc_2mv(RV34DecContext *r, const int block_type) -{ - rv34_mc(r, block_type, 0, 0, 0, 2, 2, 0, r->rv30, - r->rv30 ? r->s.dsp.put_rv30_tpel_pixels_tab - : r->s.dsp.put_h264_qpel_pixels_tab, - r->s.dsp.put_h264_chroma_pixels_tab); - rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, - r->rv30 ? r->s.dsp.avg_rv30_tpel_pixels_tab - : r->s.dsp.avg_h264_qpel_pixels_tab, - r->s.dsp.avg_h264_chroma_pixels_tab); -} - -/** number of motion vectors in each macroblock type */ -static const int num_mvs[RV34_MB_TYPES] = { 0, 0, 1, 4, 1, 1, 0, 0, 2, 2, 2, 1 }; - -/** - * Decode motion vector differences - * and perform motion vector reconstruction and motion compensation. - */ -static int rv34_decode_mv(RV34DecContext *r, int block_type) -{ - MpegEncContext *s = &r->s; - GetBitContext *gb = &s->gb; - int i; - - memset(r->dmv, 0, sizeof(r->dmv)); - for(i = 0; i < num_mvs[block_type]; i++){ - r->dmv[i][0] = svq3_get_se_golomb(gb); - r->dmv[i][1] = svq3_get_se_golomb(gb); - } - switch(block_type){ - case RV34_MB_TYPE_INTRA: - case RV34_MB_TYPE_INTRA16x16: - fill_rectangle(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], 2, 2, s->b8_stride, 0, 4); - return 0; - case RV34_MB_SKIP: - if(s->pict_type == P_TYPE){ - fill_rectangle(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], 2, 2, s->b8_stride, 0, 4); - rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0); - break; - } - case RV34_MB_B_DIRECT: - rv34_pred_mv_b (r, RV34_MB_B_DIRECT, 0); - rv34_pred_mv_b (r, RV34_MB_B_DIRECT, 1); - rv34_mc_2mv (r, RV34_MB_B_DIRECT); - break; - case RV34_MB_P_16x16: - case RV34_MB_P_MIX16x16: - rv34_pred_mv(r, block_type, 0, 0); - rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0); - break; - case RV34_MB_B_FORWARD: - case RV34_MB_B_BACKWARD: - r->dmv[1][0] = r->dmv[0][0]; - r->dmv[1][1] = r->dmv[0][1]; - rv34_pred_mv_b (r, block_type, block_type == RV34_MB_B_BACKWARD); - rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, block_type == RV34_MB_B_BACKWARD); - break; - case RV34_MB_P_16x8: - case RV34_MB_P_8x16: - rv34_pred_mv(r, block_type, 0, 0); - rv34_pred_mv(r, block_type, 1 + (block_type == RV34_MB_P_16x8), 1); - if(block_type == RV34_MB_P_16x8){ - rv34_mc_1mv(r, block_type, 0, 0, 0, 2, 1, 0); - rv34_mc_1mv(r, block_type, 0, 8, s->b8_stride, 2, 1, 0); - } - if(block_type == RV34_MB_P_8x16){ - rv34_mc_1mv(r, block_type, 0, 0, 0, 1, 2, 0); - rv34_mc_1mv(r, block_type, 8, 0, 1, 1, 2, 0); - } - break; - case RV34_MB_B_BIDIR: - rv34_pred_mv_b (r, block_type, 0); - rv34_pred_mv_b (r, block_type, 1); - rv34_mc_2mv (r, block_type); - break; - case RV34_MB_P_8x8: - for(i=0;i< 4;i++){ - rv34_pred_mv(r, block_type, i, i); - rv34_mc_1mv (r, block_type, (i&1)<<3, (i&2)<<2, (i&1)+(i>>1)*s->b8_stride, 1, 1, 0); - } - break; - } - - return 0; -} -/** @} */ // mv group - -/** - * @defgroup recons Macroblock reconstruction functions - * @{ - */ -/** mapping of RV30/40 intra prediction types to standard H.264 types */ -static const int ittrans[9] = { - DC_PRED, VERT_PRED, HOR_PRED, DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_LEFT_PRED, - VERT_RIGHT_PRED, VERT_LEFT_PRED, HOR_UP_PRED, HOR_DOWN_PRED, -}; - -/** mapping of RV30/40 intra 16x16 prediction types to standard H.264 types */ -static const int ittrans16[4] = { - DC_PRED8x8, VERT_PRED8x8, HOR_PRED8x8, PLANE_PRED8x8, -}; - -/** - * Perform 4x4 intra prediction. - */ -static void rv34_pred_4x4_block(RV34DecContext *r, uint8_t *dst, int stride, int itype, int up, int left, int down, int right) -{ - uint8_t *prev = dst - stride + 4; - uint32_t topleft; - - if(!up && !left) - itype = DC_128_PRED; - else if(!up){ - if(itype == VERT_PRED) itype = HOR_PRED; - if(itype == DC_PRED) itype = LEFT_DC_PRED; - }else if(!left){ - if(itype == HOR_PRED) itype = VERT_PRED; - if(itype == DC_PRED) itype = TOP_DC_PRED; - if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN; - } - if(!down){ - if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN; - if(itype == HOR_UP_PRED) itype = HOR_UP_PRED_RV40_NODOWN; - if(itype == VERT_LEFT_PRED) itype = VERT_LEFT_PRED_RV40_NODOWN; - } - if(!right && up){ - topleft = dst[-stride + 3] * 0x01010101; - prev = &topleft; - } - r->h.pred4x4[itype](dst, prev, stride); -} - -/** add_pixels_clamped for 4x4 block */ -static void rv34_add_4x4_block(uint8_t *dst, int stride, DCTELEM block[64], int off) -{ - int x, y; - for(y = 0; y < 4; y++) - for(x = 0; x < 4; x++) - dst[x + y*stride] = av_clip_uint8(dst[x + y*stride] + block[off + x+y*8]); -} - -static inline int adjust_pred16(int itype, int up, int left) -{ - if(!up && !left) - itype = DC_128_PRED8x8; - else if(!up){ - if(itype == PLANE_PRED8x8)itype = HOR_PRED8x8; - if(itype == VERT_PRED8x8) itype = HOR_PRED8x8; - if(itype == DC_PRED8x8) itype = LEFT_DC_PRED8x8; - }else if(!left){ - if(itype == PLANE_PRED8x8)itype = VERT_PRED8x8; - if(itype == HOR_PRED8x8) itype = VERT_PRED8x8; - if(itype == DC_PRED8x8) itype = TOP_DC_PRED8x8; - } - return itype; -} - -static void rv34_output_macroblock(RV34DecContext *r, int8_t *intra_types, int cbp, int is16) -{ - MpegEncContext *s = &r->s; - DSPContext *dsp = &s->dsp; - int i, j; - uint8_t *Y, *U, *V; - int itype; - int avail[6*8] = {0}; - int idx; - - // Set neighbour information. - if(r->avail_cache[0]) - avail[0] = 1; - if(r->avail_cache[1]) - avail[1] = avail[2] = 1; - if(r->avail_cache[2]) - avail[3] = avail[4] = 1; - if(r->avail_cache[3]) - avail[5] = 1; - if(r->avail_cache[4]) - avail[8] = avail[16] = 1; - if(r->avail_cache[8]) - avail[24] = avail[32] = 1; - - Y = s->dest[0]; - U = s->dest[1]; - V = s->dest[2]; - if(!is16){ - for(j = 0; j < 4; j++){ - idx = 9 + j*8; - for(i = 0; i < 4; i++, cbp >>= 1, Y += 4, idx++){ - rv34_pred_4x4_block(r, Y, s->linesize, ittrans[intra_types[i]], avail[idx-8], avail[idx-1], avail[idx+7], avail[idx-7]); - avail[idx] = 1; - if(cbp & 1) - rv34_add_4x4_block(Y, s->linesize, s->block[(i>>1)+(j&2)], (i&1)*4+(j&1)*32); - } - Y += s->linesize * 4 - 4*4; - intra_types += s->b4_stride; - } - intra_types -= s->b4_stride * 4; - fill_rectangle(r->avail_cache + 5, 2, 2, 4, 0, 4); - for(j = 0; j < 2; j++){ - idx = 5 + j*4; - for(i = 0; i < 2; i++, cbp >>= 1, idx++){ - rv34_pred_4x4_block(r, U + i*4 + j*4*s->uvlinesize, s->uvlinesize, ittrans[intra_types[i*2+j*2*s->b4_stride]], r->avail_cache[idx-4], r->avail_cache[idx-1], !i && !j, r->avail_cache[idx-3]); - rv34_pred_4x4_block(r, V + i*4 + j*4*s->uvlinesize, s->uvlinesize, ittrans[intra_types[i*2+j*2*s->b4_stride]], r->avail_cache[idx-4], r->avail_cache[idx-1], !i && !j, r->avail_cache[idx-3]); - r->avail_cache[idx] = 1; - if(cbp & 0x01) - rv34_add_4x4_block(U + i*4 + j*4*s->uvlinesize, s->uvlinesize, s->block[4], i*4+j*32); - if(cbp & 0x10) - rv34_add_4x4_block(V + i*4 + j*4*s->uvlinesize, s->uvlinesize, s->block[5], i*4+j*32); - } - } - }else{ - itype = ittrans16[intra_types[0]]; - itype = adjust_pred16(itype, r->avail_cache[5-4], r->avail_cache[5-1]); - r->h.pred16x16[itype](Y, s->linesize); - dsp->add_pixels_clamped(s->block[0], Y, s->current_picture.linesize[0]); - dsp->add_pixels_clamped(s->block[1], Y + 8, s->current_picture.linesize[0]); - Y += s->current_picture.linesize[0] * 8; - dsp->add_pixels_clamped(s->block[2], Y, s->current_picture.linesize[0]); - dsp->add_pixels_clamped(s->block[3], Y + 8, s->current_picture.linesize[0]); - - itype = ittrans16[intra_types[0]]; - if(itype == PLANE_PRED8x8) itype = DC_PRED8x8; - itype = adjust_pred16(itype, r->avail_cache[5-4], r->avail_cache[5-1]); - r->h.pred8x8[itype](U, s->uvlinesize); - dsp->add_pixels_clamped(s->block[4], U, s->uvlinesize); - r->h.pred8x8[itype](V, s->uvlinesize); - dsp->add_pixels_clamped(s->block[5], V, s->uvlinesize); - } -} - -/** @} */ // recons group - -/** - * @addtogroup bitstream - * Decode macroblock header and return CBP in case of success, -1 otherwise. - */ -static int rv34_decode_mb_header(RV34DecContext *r, int8_t *intra_types) -{ - MpegEncContext *s = &r->s; - GetBitContext *gb = &s->gb; - int mb_pos = s->mb_x + s->mb_y * s->mb_stride; - int i, t; - - if(!r->si.type){ - r->is16 = get_bits1(gb); - if(!r->is16 && !r->rv30){ - if(!get_bits1(gb)) - av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n"); - } - s->current_picture_ptr->mb_type[mb_pos] = r->is16 ? MB_TYPE_INTRA16x16 : MB_TYPE_INTRA; - r->block_type = r->is16 ? RV34_MB_TYPE_INTRA16x16 : RV34_MB_TYPE_INTRA; - }else{ - r->block_type = r->decode_mb_info(r); - if(r->block_type == -1) - return -1; - s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type]; - r->mb_type[mb_pos] = r->block_type; - if(r->block_type == RV34_MB_SKIP){ - if(s->pict_type == P_TYPE) - r->mb_type[mb_pos] = RV34_MB_P_16x16; - if(s->pict_type == B_TYPE) - r->mb_type[mb_pos] = RV34_MB_B_DIRECT; - } - r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]); - rv34_decode_mv(r, r->block_type); - if(r->block_type == RV34_MB_SKIP){ - fill_rectangle(intra_types, 4, 4, s->b4_stride, 0, sizeof(intra_types[0])); - return 0; - } - r->chroma_vlc = 1; - r->luma_vlc = 0; - } - if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){ - if(r->is16){ - t = get_bits(gb, 2); - fill_rectangle(intra_types, 4, 4, s->b4_stride, t, sizeof(intra_types[0])); - r->luma_vlc = 2; - }else{ - if(r->decode_intra_types(r, gb, intra_types) < 0) - return -1; - r->luma_vlc = 1; - } - r->chroma_vlc = 0; - r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0); - }else{ - for(i = 0; i < 16; i++) - intra_types[(i & 3) + (i>>2) * s->b4_stride] = 0; - r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1); - if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){ - r->is16 = 1; - r->chroma_vlc = 1; - r->luma_vlc = 2; - r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0); - } - } - - return rv34_decode_cbp(gb, r->cur_vlcs, r->is16); -} - -/** - * @addtogroup recons - * @{ - */ -/** - * mask for retrieving all bits in coded block pattern - * corresponding to one 8x8 block - */ -#define LUMA_CBP_BLOCK_MASK 0x303 - -#define U_CBP_MASK 0x0F0000 -#define V_CBP_MASK 0xF00000 - - -static void rv34_apply_differences(RV34DecContext *r, int cbp) -{ - static const int shifts[4] = { 0, 2, 8, 10 }; - MpegEncContext *s = &r->s; - int i; - - for(i = 0; i < 4; i++) - if(cbp & (LUMA_CBP_BLOCK_MASK << shifts[i])) - s->dsp.add_pixels_clamped(s->block[i], s->dest[0] + (i & 1)*8 + (i&2)*4*s->linesize, s->linesize); - if(cbp & U_CBP_MASK) - s->dsp.add_pixels_clamped(s->block[4], s->dest[1], s->uvlinesize); - if(cbp & V_CBP_MASK) - s->dsp.add_pixels_clamped(s->block[5], s->dest[2], s->uvlinesize); -} - -static int rv34_decode_macroblock(RV34DecContext *r, int8_t *intra_types) -{ - MpegEncContext *s = &r->s; - GetBitContext *gb = &s->gb; - int cbp, cbp2; - int i, blknum, blkoff; - DCTELEM block16[64]; - int luma_dc_quant; - int dist; - int mb_pos = s->mb_x + s->mb_y * s->mb_stride; - - // Calculate which neighbours are available. Maybe it's worth optimizing too. - memset(r->avail_cache, 0, sizeof(r->avail_cache)); - fill_rectangle(r->avail_cache + 5, 2, 2, 4, 1, 4); - dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width; - if(s->mb_x && dist) - r->avail_cache[4] = - r->avail_cache[8] = s->current_picture_ptr->mb_type[mb_pos - 1]; - if(dist >= s->mb_width) - r->avail_cache[1] = - r->avail_cache[2] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride]; - if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1) - r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1]; - if(s->mb_x && dist > s->mb_width) - r->avail_cache[0] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1]; - - s->qscale = r->si.quant; - cbp = cbp2 = rv34_decode_mb_header(r, intra_types); - r->cbp_luma [s->mb_x + s->mb_y * s->mb_stride] = cbp; - r->cbp_chroma[s->mb_x + s->mb_y * s->mb_stride] = cbp >> 16; - s->current_picture.qscale_table[s->mb_x + s->mb_y * s->mb_stride] = s->qscale; - - if(cbp == -1) - return -1; - - luma_dc_quant = r->si.type ? r->luma_dc_quant_p[s->qscale] : r->luma_dc_quant_i[s->qscale]; - if(r->is16){ - memset(block16, 0, sizeof(block16)); - rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0); - rv34_dequant4x4_16x16(block16, rv34_qscale_tab[luma_dc_quant],rv34_qscale_tab[s->qscale]); - rv34_inv_transform_noround(block16); - } - - for(i = 0; i < 16; i++, cbp >>= 1){ - if(!r->is16 && !(cbp & 1)) continue; - blknum = ((i & 2) >> 1) + ((i & 8) >> 2); - blkoff = ((i & 1) << 2) + ((i & 4) << 3); - if(cbp & 1) - rv34_decode_block(s->block[blknum] + blkoff, gb, r->cur_vlcs, r->luma_vlc, 0); - rv34_dequant4x4(s->block[blknum] + blkoff, rv34_qscale_tab[luma_dc_quant],rv34_qscale_tab[s->qscale]); - if(r->is16) //FIXME: optimize - s->block[blknum][blkoff] = block16[(i & 3) | ((i & 0xC) << 1)]; - rv34_inv_transform(s->block[blknum] + blkoff); - } - if(r->block_type == RV34_MB_P_MIX16x16) - r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1); - for(; i < 24; i++, cbp >>= 1){ - if(!(cbp & 1)) continue; - blknum = ((i & 4) >> 2) + 4; - blkoff = ((i & 1) << 2) + ((i & 2) << 4); - rv34_decode_block(s->block[blknum] + blkoff, gb, r->cur_vlcs, r->chroma_vlc, 1); - rv34_dequant4x4(s->block[blknum] + blkoff, rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]],rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]]); - rv34_inv_transform(s->block[blknum] + blkoff); - } - if(IS_INTRA(s->current_picture_ptr->mb_type[s->mb_x + s->mb_y*s->mb_stride])) - rv34_output_macroblock(r, intra_types, cbp2, r->is16); - else - rv34_apply_differences(r, cbp2); - - return 0; -} - -static int check_slice_end(RV34DecContext *r, MpegEncContext *s) -{ - int bits; - if(s->mb_y >= s->mb_height) - return 1; - if(!s->mb_num_left) - return 1; - if(r->s.mb_skip_run > 1) - return 0; - bits = r->bits - get_bits_count(&s->gb); - if(bits < 0 || (bits < 8 && !show_bits(&s->gb, bits))) - return 1; - return 0; -} - -static inline int slice_compare(SliceInfo *si1, SliceInfo *si2) -{ - return si1->type != si2->type || - si1->start >= si2->start || - si1->width != si2->width || - si1->height != si2->height; -} - -static int rv34_decode_slice(RV34DecContext *r, int end, uint8_t* buf, int buf_size) -{ - MpegEncContext *s = &r->s; - GetBitContext *gb = &s->gb; - int mb_pos; - int res; - - init_get_bits(&r->s.gb, buf, buf_size*8); - res = r->parse_slice_header(r, gb, &r->si); - if(res < 0){ - av_log(s->avctx, AV_LOG_ERROR, "Incorrect or unknown slice header\n"); - return -1; - } - - if ((s->mb_x == 0 && s->mb_y == 0) || s->current_picture_ptr==NULL) { - if(s->width != r->si.width || s->height != r->si.height){ - av_log(s->avctx, AV_LOG_DEBUG, "Changing dimensions to %dx%d\n", r->si.width,r->si.height); - MPV_common_end(s); - s->width = r->si.width; - s->height = r->si.height; - if(MPV_common_init(s) < 0) - return -1; - r->intra_types_hist = av_realloc(r->intra_types_hist, s->b4_stride * 4 * 2 * sizeof(*r->intra_types_hist)); - r->intra_types = r->intra_types_hist + s->b4_stride * 4; - r->mb_type = av_realloc(r->mb_type, r->s.mb_stride * r->s.mb_height * sizeof(*r->mb_type)); - r->cbp_luma = av_realloc(r->cbp_luma, r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_luma)); - r->cbp_chroma = av_realloc(r->cbp_chroma, r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_chroma)); - } - s->pict_type = r->si.type ? r->si.type : I_TYPE; - if(MPV_frame_start(s, s->avctx) < 0) - return -1; - ff_er_frame_start(s); - s->current_picture_ptr = &s->current_picture; - s->mb_x = s->mb_y = 0; - } - - r->si.end = end; - s->qscale = r->si.quant; - r->bits = buf_size*8; - s->mb_num_left = r->si.end - r->si.start; - r->s.mb_skip_run = 0; - - mb_pos = s->mb_x + s->mb_y * s->mb_width; - if(r->si.start != mb_pos){ - av_log(s->avctx, AV_LOG_ERROR, "Slice indicates MB offset %d, got %d\n", r->si.start, mb_pos); - s->mb_x = r->si.start % s->mb_width; - s->mb_y = r->si.start / s->mb_width; - } - memset(r->intra_types_hist, -1, s->b4_stride * 4 * 2 * sizeof(*r->intra_types_hist)); - s->first_slice_line = 1; - s->resync_mb_x= s->mb_x; - s->resync_mb_y= s->mb_y; - - ff_init_block_index(s); - while(!check_slice_end(r, s)) { - ff_update_block_index(s); - s->dsp.clear_blocks(s->block[0]); - - if(rv34_decode_macroblock(r, r->intra_types + s->mb_x * 4 + 1) < 0){ - ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_ERROR|DC_ERROR|MV_ERROR); - return -1; - } - if (++s->mb_x == s->mb_width) { - s->mb_x = 0; - s->mb_y++; - ff_init_block_index(s); - - memmove(r->intra_types_hist, r->intra_types, s->b4_stride * 4 * sizeof(*r->intra_types_hist)); - memset(r->intra_types, -1, s->b4_stride * 4 * sizeof(*r->intra_types_hist)); - } - if(s->mb_x == s->resync_mb_x) - s->first_slice_line=0; - s->mb_num_left--; - } - ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END); - - return (s->mb_y == s->mb_height); -} - -/** @} */ // recons group end - -/** - * Initialize decoder. - */ -int ff_rv34_decode_init(AVCodecContext *avctx) -{ - RV34DecContext *r = avctx->priv_data; - MpegEncContext *s = &r->s; - - MPV_decode_defaults(s); - s->avctx= avctx; - s->out_format = FMT_H263; - s->codec_id= avctx->codec_id; - - s->width = avctx->width; - s->height = avctx->height; - - r->s.avctx = avctx; - avctx->flags |= CODEC_FLAG_EMU_EDGE; - r->s.flags |= CODEC_FLAG_EMU_EDGE; - avctx->pix_fmt = PIX_FMT_YUV420P; - avctx->has_b_frames = 1; - s->low_delay = 0; - - if (MPV_common_init(s) < 0) - return -1; - - ff_h264_pred_init(&r->h, CODEC_ID_RV40); - - r->intra_types_hist = av_malloc(s->b4_stride * 4 * 2 * sizeof(*r->intra_types_hist)); - r->intra_types = r->intra_types_hist + s->b4_stride * 4; - - r->mb_type = av_mallocz(r->s.mb_stride * r->s.mb_height * sizeof(*r->mb_type)); - - r->cbp_luma = av_malloc(r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_luma)); - r->cbp_chroma = av_malloc(r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_chroma)); - - if(!intra_vlcs[0].cbppattern[0].bits) - rv34_init_tables(); - - return 0; -} - -static int get_slice_offset(AVCodecContext *avctx, uint8_t *buf, int n) -{ - if(avctx->slice_count) return avctx->slice_offset[n]; - else return AV_RL32(buf + n*8 - 4) == 1 ? AV_RL32(buf + n*8) : AV_RB32(buf + n*8); -} - -int ff_rv34_decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - uint8_t *buf, int buf_size) -{ - RV34DecContext *r = avctx->priv_data; - MpegEncContext *s = &r->s; - AVFrame *pict = data; - SliceInfo si; - int i; - int slice_count; - uint8_t *slices_hdr = NULL; - int last = 0; - - /* 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; - } - - if(!avctx->slice_count){ - slice_count = (*buf++) + 1; - slices_hdr = buf + 4; - buf += 8 * slice_count; - }else - slice_count = avctx->slice_count; - - for(i=0; i<slice_count; i++){ - int offset= get_slice_offset(avctx, slices_hdr, i); - int size; - if(i+1 == slice_count) - size= buf_size - offset; - else - size= get_slice_offset(avctx, slices_hdr, i+1) - offset; - - r->si.end = s->mb_width * s->mb_height; - if(i+1 < slice_count){ - init_get_bits(&s->gb, buf+get_slice_offset(avctx, slices_hdr, i+1), (buf_size-get_slice_offset(avctx, slices_hdr, i+1))*8); - if(r->parse_slice_header(r, &r->s.gb, &si) < 0){ - if(i+2 < slice_count) - size = get_slice_offset(avctx, slices_hdr, i+2) - offset; - else - size = buf_size - offset; - }else - r->si.end = si.start; - } - last = rv34_decode_slice(r, r->si.end, buf + offset, size); - s->mb_num_left = r->s.mb_x + r->s.mb_y*r->s.mb_width - r->si.start; - if(last) - break; - } - - if(last){ - if(r->loop_filter) - r->loop_filter(r); - ff_er_frame_end(s); - MPV_frame_end(s); - if (s->pict_type == 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); - } - s->current_picture_ptr= NULL; //so we can detect if frame_end wasnt called (find some nicer solution...) - } - return buf_size; -} - -int ff_rv34_decode_end(AVCodecContext *avctx) -{ - RV34DecContext *r = avctx->priv_data; - - MPV_common_end(&r->s); - - av_freep(&r->intra_types_hist); - r->intra_types = NULL; - av_freep(&r->mb_type); - - return 0; -} |