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Diffstat (limited to 'ffmpeg/libavcodec/rv34.c')
| -rw-r--r-- | ffmpeg/libavcodec/rv34.c | 1821 |
1 files changed, 1821 insertions, 0 deletions
diff --git a/ffmpeg/libavcodec/rv34.c b/ffmpeg/libavcodec/rv34.c new file mode 100644 index 0000000..35f9dea --- /dev/null +++ b/ffmpeg/libavcodec/rv34.c @@ -0,0 +1,1821 @@ +/* + * 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 + * RV30/40 decoder common data + */ + +#include "libavutil/imgutils.h" +#include "libavutil/internal.h" + +#include "avcodec.h" +#include "error_resilience.h" +#include "mpegvideo.h" +#include "golomb.h" +#include "internal.h" +#include "mathops.h" +#include "rectangle.h" +#include "thread.h" + +#include "rv34vlc.h" +#include "rv34data.h" +#include "rv34.h" + +//#define DEBUG + +static inline void ZERO8x2(void* dst, int stride) +{ + fill_rectangle(dst, 1, 2, stride, 0, 4); + fill_rectangle(((uint8_t*)(dst))+4, 1, 2, stride, 0, 4); +} + +/** 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_SEPARATE_DC, + 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 | MB_TYPE_SEPARATE_DC +}; + + +static RV34VLC intra_vlcs[NUM_INTRA_TABLES], inter_vlcs[NUM_INTER_TABLES]; + +static int rv34_decode_mv(RV34DecContext *r, int block_type); + +/** + * @name RV30/40 VLC generating functions + * @{ + */ + +static const int table_offs[] = { + 0, 1818, 3622, 4144, 4698, 5234, 5804, 5868, 5900, 5932, + 5996, 6252, 6316, 6348, 6380, 7674, 8944, 10274, 11668, 12250, + 14060, 15846, 16372, 16962, 17512, 18148, 18180, 18212, 18244, 18308, + 18564, 18628, 18660, 18692, 20036, 21314, 22648, 23968, 24614, 26384, + 28190, 28736, 29366, 29938, 30608, 30640, 30672, 30704, 30768, 31024, + 31088, 31120, 31184, 32570, 33898, 35236, 36644, 37286, 39020, 40802, + 41368, 42052, 42692, 43348, 43380, 43412, 43444, 43476, 43604, 43668, + 43700, 43732, 45100, 46430, 47778, 49160, 49802, 51550, 53340, 53972, + 54648, 55348, 55994, 56122, 56154, 56186, 56218, 56346, 56410, 56442, + 56474, 57878, 59290, 60636, 62036, 62682, 64460, 64524, 64588, 64716, + 64844, 66076, 67466, 67978, 68542, 69064, 69648, 70296, 72010, 72074, + 72138, 72202, 72330, 73572, 74936, 75454, 76030, 76566, 77176, 77822, + 79582, 79646, 79678, 79742, 79870, 81180, 82536, 83064, 83672, 84242, + 84934, 85576, 87384, 87448, 87480, 87544, 87672, 88982, 90340, 90902, + 91598, 92182, 92846, 93488, 95246, 95278, 95310, 95374, 95502, 96878, + 98266, 98848, 99542, 100234, 100884, 101524, 103320, 103352, 103384, 103416, + 103480, 104874, 106222, 106910, 107584, 108258, 108902, 109544, 111366, 111398, + 111430, 111462, 111494, 112878, 114320, 114988, 115660, 116310, 116950, 117592 +}; + +static VLC_TYPE table_data[117592][2]; + +/** + * Generate VLC from codeword lengths. + * @param bits codeword lengths (zeroes are accepted) + * @param size length of input data + * @param vlc output VLC + * @param insyms symbols for input codes (NULL for default ones) + * @param num VLC table number (for static initialization) + */ +static void rv34_gen_vlc(const uint8_t *bits, int size, VLC *vlc, const uint8_t *insyms, + const int num) +{ + int i; + int counts[17] = {0}, codes[17]; + uint16_t cw[MAX_VLC_SIZE], syms[MAX_VLC_SIZE]; + uint8_t bits2[MAX_VLC_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]]++; + + vlc->table = &table_data[table_offs[num]]; + vlc->table_allocated = table_offs[num + 1] - table_offs[num]; + ff_init_vlc_sparse(vlc, FFMIN(maxbits, 9), realsize, + bits2, 1, 1, + cw, 2, 2, + syms, 2, 2, INIT_VLC_USE_NEW_STATIC); +} + +/** + * Initialize all tables. + */ +static av_cold void rv34_init_tables(void) +{ + 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, 19*i + 0 + j); + rv34_gen_vlc(rv34_table_intra_secondpat[i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].second_pattern[j], NULL, 19*i + 2 + j); + rv34_gen_vlc(rv34_table_intra_thirdpat [i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].third_pattern[j], NULL, 19*i + 4 + j); + 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, 19*i + 6 + j*4 + k); + } + } + 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, 19*i + 14 + j); + } + rv34_gen_vlc(rv34_intra_coeff[i], COEFF_VLC_SIZE, &intra_vlcs[i].coefficient, NULL, 19*i + 18); + } + + for(i = 0; i < NUM_INTER_TABLES; i++){ + rv34_gen_vlc(rv34_inter_cbppat[i], CBPPAT_VLC_SIZE, &inter_vlcs[i].cbppattern[0], NULL, i*12 + 95); + 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, i*12 + 96 + j); + } + 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, i*12 + 100 + j); + rv34_gen_vlc(rv34_table_inter_secondpat[i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].second_pattern[j], NULL, i*12 + 102 + j); + rv34_gen_vlc(rv34_table_inter_thirdpat [i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].third_pattern[j], NULL, i*12 + 104 + j); + } + rv34_gen_vlc(rv34_inter_coeff[i], COEFF_VLC_SIZE, &inter_vlcs[i].coefficient, NULL, i*12 + 106); + } +} + +/** @} */ // vlc group + +/** + * @name 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 }; + const 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] >> (6 - 2*i)) & 3; + 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 bitstream and store it. + */ +static inline void decode_coeff(int16_t *dst, int coef, int esc, GetBitContext *gb, VLC* vlc, int q) +{ + 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*q + 8) >> 4; + } +} + +/** + * Decode 2x2 subblock of coefficients. + */ +static inline void decode_subblock(int16_t *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc, int q) +{ + int flags = modulo_three_table[code]; + + decode_coeff( dst+0*4+0, (flags >> 6) , 3, gb, vlc, q); + if(is_block2){ + decode_coeff(dst+1*4+0, (flags >> 4) & 3, 2, gb, vlc, q); + decode_coeff(dst+0*4+1, (flags >> 2) & 3, 2, gb, vlc, q); + }else{ + decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q); + decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q); + } + decode_coeff( dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q); +} + +/** + * Decode a single coefficient. + */ +static inline void decode_subblock1(int16_t *dst, int code, GetBitContext *gb, VLC *vlc, int q) +{ + int coeff = modulo_three_table[code] >> 6; + decode_coeff(dst, coeff, 3, gb, vlc, q); +} + +static inline void decode_subblock3(int16_t *dst, int code, GetBitContext *gb, VLC *vlc, + int q_dc, int q_ac1, int q_ac2) +{ + int flags = modulo_three_table[code]; + + decode_coeff(dst+0*4+0, (flags >> 6) , 3, gb, vlc, q_dc); + decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q_ac1); + decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q_ac1); + decode_coeff(dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q_ac2); +} + +/** + * 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 int rv34_decode_block(int16_t *dst, GetBitContext *gb, RV34VLC *rvlc, int fc, int sc, int q_dc, int q_ac1, int q_ac2) +{ + int code, pattern, has_ac = 1; + + code = get_vlc2(gb, rvlc->first_pattern[fc].table, 9, 2); + + pattern = code & 0x7; + + code >>= 3; + + if (modulo_three_table[code] & 0x3F) { + decode_subblock3(dst, code, gb, &rvlc->coefficient, q_dc, q_ac1, q_ac2); + } else { + decode_subblock1(dst, code, gb, &rvlc->coefficient, q_dc); + if (!pattern) + return 0; + has_ac = 0; + } + + if(pattern & 4){ + code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2); + decode_subblock(dst + 4*0+2, code, 0, gb, &rvlc->coefficient, q_ac2); + } + 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 + 4*2+0, code, 1, gb, &rvlc->coefficient, q_ac2); + } + if(pattern & 1){ + code = get_vlc2(gb, rvlc->third_pattern[sc].table, 9, 2); + decode_subblock(dst + 4*2+2, code, 0, gb, &rvlc->coefficient, q_ac2); + } + return has_ac | pattern; +} + +/** + * @name 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 - 1) + 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 intra macroblock header and return CBP in case of success, -1 otherwise. + */ +static int rv34_decode_intra_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 t; + + r->is16 = get_bits1(gb); + if(r->is16){ + s->current_picture_ptr->mb_type[mb_pos] = MB_TYPE_INTRA16x16; + r->block_type = RV34_MB_TYPE_INTRA16x16; + t = get_bits(gb, 2); + fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0])); + r->luma_vlc = 2; + }else{ + if(!r->rv30){ + if(!get_bits1(gb)) + av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n"); + } + s->current_picture_ptr->mb_type[mb_pos] = MB_TYPE_INTRA; + r->block_type = RV34_MB_TYPE_INTRA; + 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); + + return rv34_decode_cbp(gb, r->cur_vlcs, r->is16); +} + +/** + * Decode inter macroblock header and return CBP in case of success, -1 otherwise. + */ +static int rv34_decode_inter_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; + + 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 == AV_PICTURE_TYPE_P) + r->mb_type[mb_pos] = RV34_MB_P_16x16; + if(s->pict_type == AV_PICTURE_TYPE_B) + 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, r->intra_types_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, r->intra_types_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) * r->intra_types_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); +} + +/** @} */ //bitstream functions + +/** + * @name 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] = { 6, 7, 10, 11 }; + +/** + * 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 = r->avail_cache + 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(avail[-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(avail[-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(!avail[c_off-4]){ + if(avail[-4] && (avail[-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; + } + } +} + +#define GET_PTS_DIFF(a, b) ((a - b + 8192) & 0x1FFF) + +/** + * Calculate motion vector component that should be added for direct blocks. + */ +static int calc_add_mv(RV34DecContext *r, int dir, int val) +{ + int mul = dir ? -r->mv_weight2 : r->mv_weight1; + + return (val * mul + 0x2000) >> 14; +} + +/** + * 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] = { 0 }, B[2] = { 0 }, C[2] = { 0 }; + 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]; + + if((r->avail_cache[6-1] & 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[6-4] & 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[6-4] && (r->avail_cache[6-2] & 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[6-5] & 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]; + + 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){ + ZERO8x2(cur_pic->motion_val[!dir][mv_pos], s->b8_stride); + } +} + +/** + * motion vector prediction - RV3 version + */ +static void rv34_pred_mv_rv3(RV34DecContext *r, int block_type, int dir) +{ + 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, k; + int mx, my; + int* avail = r->avail_cache + avail_indexes[0]; + + if(avail[-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(avail[-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(!avail[-4 + 2]){ + if(avail[-4] && (avail[-1])){ + 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 + 2][0]; + C[1] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride + 2][1]; + } + mx = mid_pred(A[0], B[0], C[0]); + my = mid_pred(A[1], B[1], C[1]); + mx += r->dmv[0][0]; + my += r->dmv[0][1]; + for(j = 0; j < 2; j++){ + for(i = 0; i < 2; i++){ + for(k = 0; k < 2; k++){ + s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][0] = mx; + s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][1] = my; + } + } + } +} + +static const int chroma_coeffs[3] = { 0, 3, 5 }; + +/** + * 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 + * @param dir motion compensation direction (i.e. from the last or the next reference frame) + * @param thirdpel motion vectors are specified in 1/3 of pixel + * @param qpel_mc a set of functions used to perform luma motion compensation + * @param chroma_mc a set of functions used to perform chroma motion compensation + */ +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, int weighted, + 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, umx, umy, 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){ + int chroma_mx, chroma_my; + 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; + chroma_mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2; + chroma_my = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2; + umx = (chroma_mx + (3 << 24)) / 3 - (1 << 24); + umy = (chroma_my + (3 << 24)) / 3 - (1 << 24); + uvmx = chroma_coeffs[(chroma_mx + (3 << 24)) % 3]; + uvmy = chroma_coeffs[(chroma_my + (3 << 24)) % 3]; + }else{ + int cx, cy; + 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; + cx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2; + cy = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2; + umx = cx >> 2; + umy = cy >> 2; + uvmx = (cx & 3) << 1; + uvmy = (cy & 3) << 1; + //due to some flaw RV40 uses the same MC compensation routine for H2V2 and H3V3 + if(uvmx == 6 && uvmy == 6) + uvmx = uvmy = 4; + } + + if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) { + /* wait for the referenced mb row to be finished */ + int mb_row = s->mb_y + ((yoff + my + 5 + 8 * height) >> 4); + ThreadFrame *f = dir ? &s->next_picture_ptr->tf : &s->last_picture_ptr->tf; + ff_thread_await_progress(f, mb_row, 0); + } + + dxy = ly*4 + lx; + srcY = dir ? s->next_picture_ptr->f.data[0] : s->last_picture_ptr->f.data[0]; + srcU = dir ? s->next_picture_ptr->f.data[1] : s->last_picture_ptr->f.data[1]; + srcV = dir ? s->next_picture_ptr->f.data[2] : s->last_picture_ptr->f.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) + umx; + uvsrc_y = s->mb_y * 8 + (yoff >> 1) + umy; + srcY += src_y * s->linesize + src_x; + srcU += uvsrc_y * s->uvlinesize + uvsrc_x; + srcV += uvsrc_y * s->uvlinesize + uvsrc_x; + if(s->h_edge_pos - (width << 3) < 6 || s->v_edge_pos - (height << 3) < 6 || + (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4 || + (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4) { + uint8_t *uvbuf = s->edge_emu_buffer + 22 * s->linesize; + + srcY -= 2 + 2*s->linesize; + s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, (width<<3)+6, (height<<3)+6, + src_x - 2, src_y - 2, s->h_edge_pos, s->v_edge_pos); + srcY = s->edge_emu_buffer + 2 + 2*s->linesize; + s->vdsp.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); + s->vdsp.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; + } + if(!weighted){ + 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; + }else{ + Y = r->tmp_b_block_y [dir] + xoff + yoff *s->linesize; + U = r->tmp_b_block_uv[dir*2] + (xoff>>1) + (yoff>>1)*s->uvlinesize; + V = r->tmp_b_block_uv[dir*2+1] + (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, 0, + r->rdsp.put_pixels_tab, + r->rdsp.put_chroma_pixels_tab); +} + +static void rv4_weight(RV34DecContext *r) +{ + r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][0](r->s.dest[0], + r->tmp_b_block_y[0], + r->tmp_b_block_y[1], + r->weight1, + r->weight2, + r->s.linesize); + r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[1], + r->tmp_b_block_uv[0], + r->tmp_b_block_uv[2], + r->weight1, + r->weight2, + r->s.uvlinesize); + r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[2], + r->tmp_b_block_uv[1], + r->tmp_b_block_uv[3], + r->weight1, + r->weight2, + r->s.uvlinesize); +} + +static void rv34_mc_2mv(RV34DecContext *r, const int block_type) +{ + int weighted = !r->rv30 && block_type != RV34_MB_B_BIDIR && r->weight1 != 8192; + + rv34_mc(r, block_type, 0, 0, 0, 2, 2, 0, r->rv30, weighted, + r->rdsp.put_pixels_tab, + r->rdsp.put_chroma_pixels_tab); + if(!weighted){ + rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 0, + r->rdsp.avg_pixels_tab, + r->rdsp.avg_chroma_pixels_tab); + }else{ + rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 1, + r->rdsp.put_pixels_tab, + r->rdsp.put_chroma_pixels_tab); + rv4_weight(r); + } +} + +static void rv34_mc_2mv_skip(RV34DecContext *r) +{ + int i, j; + int weighted = !r->rv30 && r->weight1 != 8192; + + for(j = 0; j < 2; j++) + for(i = 0; i < 2; i++){ + rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 0, r->rv30, + weighted, + r->rdsp.put_pixels_tab, + r->rdsp.put_chroma_pixels_tab); + rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 1, r->rv30, + weighted, + weighted ? r->rdsp.put_pixels_tab : r->rdsp.avg_pixels_tab, + weighted ? r->rdsp.put_chroma_pixels_tab : r->rdsp.avg_chroma_pixels_tab); + } + if(weighted) + rv4_weight(r); +} + +/** 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, j, k, l; + int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; + int next_bt; + + 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: + ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); + return 0; + case RV34_MB_SKIP: + if(s->pict_type == AV_PICTURE_TYPE_P){ + ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); + rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0); + break; + } + case RV34_MB_B_DIRECT: + //surprisingly, it uses motion scheme from next reference frame + /* wait for the current mb row to be finished */ + if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) + ff_thread_await_progress(&s->next_picture_ptr->tf, FFMAX(0, s->mb_y-1), 0); + + next_bt = s->next_picture_ptr->mb_type[s->mb_x + s->mb_y * s->mb_stride]; + if(IS_INTRA(next_bt) || IS_SKIP(next_bt)){ + ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); + ZERO8x2(s->current_picture_ptr->motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); + }else + for(j = 0; j < 2; j++) + for(i = 0; i < 2; i++) + for(k = 0; k < 2; k++) + for(l = 0; l < 2; l++) + s->current_picture_ptr->motion_val[l][mv_pos + i + j*s->b8_stride][k] = calc_add_mv(r, l, s->next_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][k]); + if(!(IS_16X8(next_bt) || IS_8X16(next_bt) || IS_8X8(next_bt))) //we can use whole macroblock MC + rv34_mc_2mv(r, block_type); + else + rv34_mc_2mv_skip(r); + ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); + 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]; + if(r->rv30) + rv34_pred_mv_rv3(r, block_type, block_type == RV34_MB_B_BACKWARD); + else + 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 + +/** + * @name 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] * 0x01010101u; + prev = (uint8_t*)&topleft; + } + r->h.pred4x4[itype](dst, prev, stride); +} + +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 inline void rv34_process_block(RV34DecContext *r, + uint8_t *pdst, int stride, + int fc, int sc, int q_dc, int q_ac) +{ + MpegEncContext *s = &r->s; + int16_t *ptr = s->block[0]; + int has_ac = rv34_decode_block(ptr, &s->gb, r->cur_vlcs, + fc, sc, q_dc, q_ac, q_ac); + if(has_ac){ + r->rdsp.rv34_idct_add(pdst, stride, ptr); + }else{ + r->rdsp.rv34_idct_dc_add(pdst, stride, ptr[0]); + ptr[0] = 0; + } +} + +static void rv34_output_i16x16(RV34DecContext *r, int8_t *intra_types, int cbp) +{ + LOCAL_ALIGNED_16(int16_t, block16, [16]); + MpegEncContext *s = &r->s; + GetBitContext *gb = &s->gb; + int q_dc = rv34_qscale_tab[ r->luma_dc_quant_i[s->qscale] ], + q_ac = rv34_qscale_tab[s->qscale]; + uint8_t *dst = s->dest[0]; + int16_t *ptr = s->block[0]; + int i, j, itype, has_ac; + + memset(block16, 0, 16 * sizeof(*block16)); + + has_ac = rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac); + if(has_ac) + r->rdsp.rv34_inv_transform(block16); + else + r->rdsp.rv34_inv_transform_dc(block16); + + itype = ittrans16[intra_types[0]]; + itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]); + r->h.pred16x16[itype](dst, s->linesize); + + for(j = 0; j < 4; j++){ + for(i = 0; i < 4; i++, cbp >>= 1){ + int dc = block16[i + j*4]; + + if(cbp & 1){ + has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac); + }else + has_ac = 0; + + if(has_ac){ + ptr[0] = dc; + r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr); + }else + r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc); + } + + dst += 4*s->linesize; + } + + itype = ittrans16[intra_types[0]]; + if(itype == PLANE_PRED8x8) itype = DC_PRED8x8; + itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]); + + q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]]; + q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]]; + + for(j = 1; j < 3; j++){ + dst = s->dest[j]; + r->h.pred8x8[itype](dst, s->uvlinesize); + for(i = 0; i < 4; i++, cbp >>= 1){ + uint8_t *pdst; + if(!(cbp & 1)) continue; + pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize; + + rv34_process_block(r, pdst, s->uvlinesize, + r->chroma_vlc, 1, q_dc, q_ac); + } + } +} + +static void rv34_output_intra(RV34DecContext *r, int8_t *intra_types, int cbp) +{ + MpegEncContext *s = &r->s; + uint8_t *dst = s->dest[0]; + int avail[6*8] = {0}; + int i, j, k; + int idx, q_ac, q_dc; + + // Set neighbour information. + if(r->avail_cache[1]) + avail[0] = 1; + if(r->avail_cache[2]) + avail[1] = avail[2] = 1; + if(r->avail_cache[3]) + avail[3] = avail[4] = 1; + if(r->avail_cache[4]) + avail[5] = 1; + if(r->avail_cache[5]) + avail[8] = avail[16] = 1; + if(r->avail_cache[9]) + avail[24] = avail[32] = 1; + + q_ac = rv34_qscale_tab[s->qscale]; + for(j = 0; j < 4; j++){ + idx = 9 + j*8; + for(i = 0; i < 4; i++, cbp >>= 1, dst += 4, idx++){ + rv34_pred_4x4_block(r, dst, s->linesize, ittrans[intra_types[i]], avail[idx-8], avail[idx-1], avail[idx+7], avail[idx-7]); + avail[idx] = 1; + if(!(cbp & 1)) continue; + + rv34_process_block(r, dst, s->linesize, + r->luma_vlc, 0, q_ac, q_ac); + } + dst += s->linesize * 4 - 4*4; + intra_types += r->intra_types_stride; + } + + intra_types -= r->intra_types_stride * 4; + + q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]]; + q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]]; + + for(k = 0; k < 2; k++){ + dst = s->dest[1+k]; + fill_rectangle(r->avail_cache + 6, 2, 2, 4, 0, 4); + + for(j = 0; j < 2; j++){ + int* acache = r->avail_cache + 6 + j*4; + for(i = 0; i < 2; i++, cbp >>= 1, acache++){ + int itype = ittrans[intra_types[i*2+j*2*r->intra_types_stride]]; + rv34_pred_4x4_block(r, dst+4*i, s->uvlinesize, itype, acache[-4], acache[-1], !i && !j, acache[-3]); + acache[0] = 1; + + if(!(cbp&1)) continue; + + rv34_process_block(r, dst + 4*i, s->uvlinesize, + r->chroma_vlc, 1, q_dc, q_ac); + } + + dst += 4*s->uvlinesize; + } + } +} + +static int is_mv_diff_gt_3(int16_t (*motion_val)[2], int step) +{ + int d; + d = motion_val[0][0] - motion_val[-step][0]; + if(d < -3 || d > 3) + return 1; + d = motion_val[0][1] - motion_val[-step][1]; + if(d < -3 || d > 3) + return 1; + return 0; +} + +static int rv34_set_deblock_coef(RV34DecContext *r) +{ + MpegEncContext *s = &r->s; + int hmvmask = 0, vmvmask = 0, i, j; + int midx = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; + int16_t (*motion_val)[2] = &s->current_picture_ptr->motion_val[0][midx]; + for(j = 0; j < 16; j += 8){ + for(i = 0; i < 2; i++){ + if(is_mv_diff_gt_3(motion_val + i, 1)) + vmvmask |= 0x11 << (j + i*2); + if((j || s->mb_y) && is_mv_diff_gt_3(motion_val + i, s->b8_stride)) + hmvmask |= 0x03 << (j + i*2); + } + motion_val += s->b8_stride; + } + if(s->first_slice_line) + hmvmask &= ~0x000F; + if(!s->mb_x) + vmvmask &= ~0x1111; + if(r->rv30){ //RV30 marks both subblocks on the edge for filtering + vmvmask |= (vmvmask & 0x4444) >> 1; + hmvmask |= (hmvmask & 0x0F00) >> 4; + if(s->mb_x) + r->deblock_coefs[s->mb_x - 1 + s->mb_y*s->mb_stride] |= (vmvmask & 0x1111) << 3; + if(!s->first_slice_line) + r->deblock_coefs[s->mb_x + (s->mb_y - 1)*s->mb_stride] |= (hmvmask & 0xF) << 12; + } + return hmvmask | vmvmask; +} + +static int rv34_decode_inter_macroblock(RV34DecContext *r, int8_t *intra_types) +{ + MpegEncContext *s = &r->s; + GetBitContext *gb = &s->gb; + uint8_t *dst = s->dest[0]; + int16_t *ptr = s->block[0]; + int mb_pos = s->mb_x + s->mb_y * s->mb_stride; + int cbp, cbp2; + int q_dc, q_ac, has_ac; + int i, j; + int dist; + + // 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 + 6, 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[5] = + r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1]; + if(dist >= s->mb_width) + r->avail_cache[2] = + r->avail_cache[3] = 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[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1]; + if(s->mb_x && dist > s->mb_width) + r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1]; + + s->qscale = r->si.quant; + cbp = cbp2 = rv34_decode_inter_mb_header(r, intra_types); + r->cbp_luma [mb_pos] = cbp; + r->cbp_chroma[mb_pos] = cbp >> 16; + r->deblock_coefs[mb_pos] = rv34_set_deblock_coef(r) | r->cbp_luma[mb_pos]; + s->current_picture_ptr->qscale_table[mb_pos] = s->qscale; + + if(cbp == -1) + return -1; + + if (IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){ + if(r->is16) rv34_output_i16x16(r, intra_types, cbp); + else rv34_output_intra(r, intra_types, cbp); + return 0; + } + + if(r->is16){ + // Only for RV34_MB_P_MIX16x16 + LOCAL_ALIGNED_16(int16_t, block16, [16]); + memset(block16, 0, 16 * sizeof(*block16)); + q_dc = rv34_qscale_tab[ r->luma_dc_quant_p[s->qscale] ]; + q_ac = rv34_qscale_tab[s->qscale]; + if (rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac)) + r->rdsp.rv34_inv_transform(block16); + else + r->rdsp.rv34_inv_transform_dc(block16); + + q_ac = rv34_qscale_tab[s->qscale]; + + for(j = 0; j < 4; j++){ + for(i = 0; i < 4; i++, cbp >>= 1){ + int dc = block16[i + j*4]; + + if(cbp & 1){ + has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac); + }else + has_ac = 0; + + if(has_ac){ + ptr[0] = dc; + r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr); + }else + r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc); + } + + dst += 4*s->linesize; + } + + r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1); + }else{ + q_ac = rv34_qscale_tab[s->qscale]; + + for(j = 0; j < 4; j++){ + for(i = 0; i < 4; i++, cbp >>= 1){ + if(!(cbp & 1)) continue; + + rv34_process_block(r, dst + 4*i, s->linesize, + r->luma_vlc, 0, q_ac, q_ac); + } + dst += 4*s->linesize; + } + } + + q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]]; + q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]]; + + for(j = 1; j < 3; j++){ + dst = s->dest[j]; + for(i = 0; i < 4; i++, cbp >>= 1){ + uint8_t *pdst; + if(!(cbp & 1)) continue; + pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize; + + rv34_process_block(r, pdst, s->uvlinesize, + r->chroma_vlc, 1, q_dc, q_ac); + } + } + + return 0; +} + +static int rv34_decode_intra_macroblock(RV34DecContext *r, int8_t *intra_types) +{ + MpegEncContext *s = &r->s; + int cbp, 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 + 6, 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[5] = + r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1]; + if(dist >= s->mb_width) + r->avail_cache[2] = + r->avail_cache[3] = 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[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1]; + if(s->mb_x && dist > s->mb_width) + r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1]; + + s->qscale = r->si.quant; + cbp = rv34_decode_intra_mb_header(r, intra_types); + r->cbp_luma [mb_pos] = cbp; + r->cbp_chroma[mb_pos] = cbp >> 16; + r->deblock_coefs[mb_pos] = 0xFFFF; + s->current_picture_ptr->qscale_table[mb_pos] = s->qscale; + + if(cbp == -1) + return -1; + + if(r->is16){ + rv34_output_i16x16(r, intra_types, cbp); + return 0; + } + + rv34_output_intra(r, intra_types, cbp); + 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 = get_bits_left(&s->gb); + if(bits <= 0 || (bits < 8 && !show_bits(&s->gb, bits))) + return 1; + return 0; +} + + +static void rv34_decoder_free(RV34DecContext *r) +{ + av_freep(&r->intra_types_hist); + r->intra_types = NULL; + av_freep(&r->tmp_b_block_base); + av_freep(&r->mb_type); + av_freep(&r->cbp_luma); + av_freep(&r->cbp_chroma); + av_freep(&r->deblock_coefs); +} + + +static int rv34_decoder_alloc(RV34DecContext *r) +{ + r->intra_types_stride = r->s.mb_width * 4 + 4; + + r->cbp_chroma = av_malloc(r->s.mb_stride * r->s.mb_height * + sizeof(*r->cbp_chroma)); + r->cbp_luma = av_malloc(r->s.mb_stride * r->s.mb_height * + sizeof(*r->cbp_luma)); + r->deblock_coefs = av_malloc(r->s.mb_stride * r->s.mb_height * + sizeof(*r->deblock_coefs)); + r->intra_types_hist = av_malloc(r->intra_types_stride * 4 * 2 * + sizeof(*r->intra_types_hist)); + r->mb_type = av_mallocz(r->s.mb_stride * r->s.mb_height * + sizeof(*r->mb_type)); + + if (!(r->cbp_chroma && r->cbp_luma && r->deblock_coefs && + r->intra_types_hist && r->mb_type)) { + rv34_decoder_free(r); + return AVERROR(ENOMEM); + } + + r->intra_types = r->intra_types_hist + r->intra_types_stride * 4; + + return 0; +} + + +static int rv34_decoder_realloc(RV34DecContext *r) +{ + rv34_decoder_free(r); + return rv34_decoder_alloc(r); +} + + +static int rv34_decode_slice(RV34DecContext *r, int end, const uint8_t* buf, int buf_size) +{ + MpegEncContext *s = &r->s; + GetBitContext *gb = &s->gb; + int mb_pos, slice_type; + 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; + } + + slice_type = r->si.type ? r->si.type : AV_PICTURE_TYPE_I; + if (slice_type != s->pict_type) { + av_log(s->avctx, AV_LOG_ERROR, "Slice type mismatch\n"); + return AVERROR_INVALIDDATA; + } + if (s->width != r->si.width || s->height != r->si.height) { + av_log(s->avctx, AV_LOG_ERROR, "Size mismatch\n"); + return AVERROR_INVALIDDATA; + } + + r->si.end = end; + s->qscale = r->si.quant; + 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, r->intra_types_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); + + if(r->si.type) + res = rv34_decode_inter_macroblock(r, r->intra_types + s->mb_x * 4 + 4); + else + res = rv34_decode_intra_macroblock(r, r->intra_types + s->mb_x * 4 + 4); + if(res < 0){ + ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_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, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist)); + memset(r->intra_types, -1, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist)); + + if(r->loop_filter && s->mb_y >= 2) + r->loop_filter(r, s->mb_y - 2); + + if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) + ff_thread_report_progress(&s->current_picture_ptr->tf, + s->mb_y - 2, 0); + + } + if(s->mb_x == s->resync_mb_x) + s->first_slice_line=0; + s->mb_num_left--; + } + ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_END); + + return s->mb_y == s->mb_height; +} + +/** @} */ // recons group end + +/** + * Initialize decoder. + */ +av_cold int ff_rv34_decode_init(AVCodecContext *avctx) +{ + RV34DecContext *r = avctx->priv_data; + MpegEncContext *s = &r->s; + int ret; + + ff_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 = AV_PIX_FMT_YUV420P; + avctx->has_b_frames = 1; + s->low_delay = 0; + + if ((ret = ff_MPV_common_init(s)) < 0) + return ret; + + ff_h264_pred_init(&r->h, AV_CODEC_ID_RV40, 8, 1); + +#if CONFIG_RV30_DECODER + if (avctx->codec_id == AV_CODEC_ID_RV30) + ff_rv30dsp_init(&r->rdsp); +#endif +#if CONFIG_RV40_DECODER + if (avctx->codec_id == AV_CODEC_ID_RV40) + ff_rv40dsp_init(&r->rdsp); +#endif + + if ((ret = rv34_decoder_alloc(r)) < 0) + return ret; + + if(!intra_vlcs[0].cbppattern[0].bits) + rv34_init_tables(); + + avctx->internal->allocate_progress = 1; + + return 0; +} + +int ff_rv34_decode_init_thread_copy(AVCodecContext *avctx) +{ + int err; + RV34DecContext *r = avctx->priv_data; + + r->s.avctx = avctx; + + if (avctx->internal->is_copy) { + r->tmp_b_block_base = NULL; + if ((err = ff_MPV_common_init(&r->s)) < 0) + return err; + if ((err = rv34_decoder_alloc(r)) < 0) + return err; + } + + return 0; +} + +int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src) +{ + RV34DecContext *r = dst->priv_data, *r1 = src->priv_data; + MpegEncContext * const s = &r->s, * const s1 = &r1->s; + int err; + + if (dst == src || !s1->context_initialized) + return 0; + + if (s->height != s1->height || s->width != s1->width) { + s->height = s1->height; + s->width = s1->width; + if ((err = ff_MPV_common_frame_size_change(s)) < 0) + return err; + if ((err = rv34_decoder_realloc(r)) < 0) + return err; + } + + if ((err = ff_mpeg_update_thread_context(dst, src))) + return err; + + r->cur_pts = r1->cur_pts; + r->last_pts = r1->last_pts; + r->next_pts = r1->next_pts; + + memset(&r->si, 0, sizeof(r->si)); + + return 0; +} + +static int get_slice_offset(AVCodecContext *avctx, const 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); +} + +static int finish_frame(AVCodecContext *avctx, AVFrame *pict) +{ + RV34DecContext *r = avctx->priv_data; + MpegEncContext *s = &r->s; + int got_picture = 0, ret; + + ff_er_frame_end(&s->er); + ff_MPV_frame_end(s); + s->mb_num_left = 0; + + if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) + ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0); + + if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) { + if ((ret = av_frame_ref(pict, &s->current_picture_ptr->f)) < 0) + return ret; + ff_print_debug_info(s, s->current_picture_ptr, pict); + ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG1); + got_picture = 1; + } else if (s->last_picture_ptr != NULL) { + if ((ret = av_frame_ref(pict, &s->last_picture_ptr->f)) < 0) + return ret; + ff_print_debug_info(s, s->last_picture_ptr, pict); + ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG1); + got_picture = 1; + } + + return got_picture; +} + +static AVRational update_sar(int old_w, int old_h, AVRational sar, int new_w, int new_h) +{ + // attempt to keep aspect during typical resolution switches + if (!sar.num) + sar = (AVRational){1, 1}; + + sar = av_mul_q(sar, (AVRational){new_h * old_w, new_w * old_h}); + return sar; +} + +int ff_rv34_decode_frame(AVCodecContext *avctx, + void *data, int *got_picture_ptr, + AVPacket *avpkt) +{ + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; + RV34DecContext *r = avctx->priv_data; + MpegEncContext *s = &r->s; + AVFrame *pict = data; + SliceInfo si; + int i, ret; + int slice_count; + const 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) { + if ((ret = av_frame_ref(pict, &s->next_picture_ptr->f)) < 0) + return ret; + s->next_picture_ptr = NULL; + + *got_picture_ptr = 1; + } + return 0; + } + + if(!avctx->slice_count){ + slice_count = (*buf++) + 1; + slices_hdr = buf + 4; + buf += 8 * slice_count; + buf_size -= 1 + 8 * slice_count; + }else + slice_count = avctx->slice_count; + + //parse first slice header to check whether this frame can be decoded + if(get_slice_offset(avctx, slices_hdr, 0) < 0 || + get_slice_offset(avctx, slices_hdr, 0) > buf_size){ + av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n"); + return AVERROR_INVALIDDATA; + } + init_get_bits(&s->gb, buf+get_slice_offset(avctx, slices_hdr, 0), (buf_size-get_slice_offset(avctx, slices_hdr, 0))*8); + if(r->parse_slice_header(r, &r->s.gb, &si) < 0 || si.start){ + av_log(avctx, AV_LOG_ERROR, "First slice header is incorrect\n"); + return AVERROR_INVALIDDATA; + } + if ((!s->last_picture_ptr || !s->last_picture_ptr->f.data[0]) && + si.type == AV_PICTURE_TYPE_B) { + av_log(avctx, AV_LOG_ERROR, "Invalid decoder state: B-frame without " + "reference data.\n"); + return AVERROR_INVALIDDATA; + } + if( (avctx->skip_frame >= AVDISCARD_NONREF && si.type==AV_PICTURE_TYPE_B) + || (avctx->skip_frame >= AVDISCARD_NONKEY && si.type!=AV_PICTURE_TYPE_I) + || avctx->skip_frame >= AVDISCARD_ALL) + return avpkt->size; + + /* first slice */ + if (si.start == 0) { + if (s->mb_num_left > 0) { + av_log(avctx, AV_LOG_ERROR, "New frame but still %d MB left.\n", + s->mb_num_left); + ff_er_frame_end(&s->er); + ff_MPV_frame_end(s); + } + + if (s->width != si.width || s->height != si.height) { + int err; + + av_log(s->avctx, AV_LOG_WARNING, "Changing dimensions to %dx%d\n", + si.width, si.height); + + if (av_image_check_size(si.width, si.height, 0, s->avctx)) + return AVERROR_INVALIDDATA; + + s->avctx->sample_aspect_ratio = update_sar( + s->width, s->height, s->avctx->sample_aspect_ratio, + si.width, si.height); + s->width = si.width; + s->height = si.height; + avcodec_set_dimensions(s->avctx, s->width, s->height); + if ((err = ff_MPV_common_frame_size_change(s)) < 0) + return err; + if ((err = rv34_decoder_realloc(r)) < 0) + return err; + } + s->pict_type = si.type ? si.type : AV_PICTURE_TYPE_I; + if (ff_MPV_frame_start(s, s->avctx) < 0) + return -1; + ff_mpeg_er_frame_start(s); + if (!r->tmp_b_block_base) { + int i; + + r->tmp_b_block_base = av_malloc(s->linesize * 48); + for (i = 0; i < 2; i++) + r->tmp_b_block_y[i] = r->tmp_b_block_base + + i * 16 * s->linesize; + for (i = 0; i < 4; i++) + r->tmp_b_block_uv[i] = r->tmp_b_block_base + 32 * s->linesize + + (i >> 1) * 8 * s->uvlinesize + + (i & 1) * 16; + } + r->cur_pts = si.pts; + if (s->pict_type != AV_PICTURE_TYPE_B) { + r->last_pts = r->next_pts; + r->next_pts = r->cur_pts; + } else { + int refdist = GET_PTS_DIFF(r->next_pts, r->last_pts); + int dist0 = GET_PTS_DIFF(r->cur_pts, r->last_pts); + int dist1 = GET_PTS_DIFF(r->next_pts, r->cur_pts); + + if(!refdist){ + r->mv_weight1 = r->mv_weight2 = r->weight1 = r->weight2 = 8192; + r->scaled_weight = 0; + }else{ + r->mv_weight1 = (dist0 << 14) / refdist; + r->mv_weight2 = (dist1 << 14) / refdist; + if((r->mv_weight1|r->mv_weight2) & 511){ + r->weight1 = r->mv_weight1; + r->weight2 = r->mv_weight2; + r->scaled_weight = 0; + }else{ + r->weight1 = r->mv_weight1 >> 9; + r->weight2 = r->mv_weight2 >> 9; + r->scaled_weight = 1; + } + } + } + s->mb_x = s->mb_y = 0; + ff_thread_finish_setup(s->avctx); + } else if (HAVE_THREADS && + (s->avctx->active_thread_type & FF_THREAD_FRAME)) { + av_log(s->avctx, AV_LOG_ERROR, "Decoder needs full frames in frame " + "multithreading mode (start MB is %d).\n", si.start); + return AVERROR_INVALIDDATA; + } + + 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; + + if(offset < 0 || offset > buf_size){ + av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n"); + break; + } + + r->si.end = s->mb_width * s->mb_height; + s->mb_num_left = r->s.mb_x + r->s.mb_y*r->s.mb_width - r->si.start; + + if(i+1 < slice_count){ + if (get_slice_offset(avctx, slices_hdr, i+1) < 0 || + get_slice_offset(avctx, slices_hdr, i+1) > buf_size) { + av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n"); + break; + } + 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; + } + if (size < 0 || size > buf_size - offset) { + av_log(avctx, AV_LOG_ERROR, "Slice size is invalid\n"); + break; + } + last = rv34_decode_slice(r, r->si.end, buf + offset, size); + if(last) + break; + } + + if (s->current_picture_ptr) { + if (last) { + if(r->loop_filter) + r->loop_filter(r, s->mb_height - 1); + + ret = finish_frame(avctx, pict); + if (ret < 0) + return ret; + *got_picture_ptr = ret; + } else if (HAVE_THREADS && + (s->avctx->active_thread_type & FF_THREAD_FRAME)) { + av_log(avctx, AV_LOG_INFO, "marking unfished frame as finished\n"); + /* always mark the current frame as finished, frame-mt supports + * only complete frames */ + ff_er_frame_end(&s->er); + ff_MPV_frame_end(s); + s->mb_num_left = 0; + ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0); + return AVERROR_INVALIDDATA; + } + } + + return avpkt->size; +} + +av_cold int ff_rv34_decode_end(AVCodecContext *avctx) +{ + RV34DecContext *r = avctx->priv_data; + + ff_MPV_common_end(&r->s); + rv34_decoder_free(r); + + return 0; +} |