diff options
author | povaddict <povaddict@users.sourceforge.net> | 2010-02-10 02:16:44 +0300 |
---|---|---|
committer | povaddict <povaddict@users.sourceforge.net> | 2010-02-10 02:16:44 +0300 |
commit | 726a91b12a7524e45e7a901c9e4883af5b1bffe6 (patch) | |
tree | f5d25e3b2e84c92f4901280c73d5d3d7e6c3cd19 /src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/rv30.c | |
parent | 02183f6e47ad4ea1057de9950482f291f2ae4290 (diff) |
Rename several directories to use MixedCase instead of lowercase.
They now mostly match the case used in #includes,
and they're consistent with the names of the .h files they contain.
git-svn-id: https://mpc-hc.svn.sourceforge.net/svnroot/mpc-hc/trunk@1648 10f7b99b-c216-0410-bff0-8a66a9350fd8
Diffstat (limited to 'src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/rv30.c')
-rw-r--r-- | src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/rv30.c | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/rv30.c b/src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/rv30.c new file mode 100644 index 000000000..f97c326f8 --- /dev/null +++ b/src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/rv30.c @@ -0,0 +1,284 @@ +/* + * RV30 decoder + * Copyright (c) 2007 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 libavcodec/rv30.c + * RV30 decoder + */ + +#include "avcodec.h" +#include "dsputil.h" +#include "mpegvideo.h" +#include "golomb.h" + +#include "rv34.h" +#include "rv30data.h" + + +static int rv30_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si) +{ + int mb_bits; + int w = r->s.width, h = r->s.height; + int mb_size; + int rpr; + + memset(si, 0, sizeof(SliceInfo)); + if(get_bits(gb, 3)) + return -1; + si->type = get_bits(gb, 2); + if(si->type == 1) si->type = 0; + if(get_bits1(gb)) + return -1; + si->quant = get_bits(gb, 5); + skip_bits1(gb); + si->pts = get_bits(gb, 13); + rpr = get_bits(gb, r->rpr); + if(rpr){ + w = r->s.avctx->extradata[6 + rpr*2] << 2; + h = r->s.avctx->extradata[7 + rpr*2] << 2; + } + si->width = w; + si->height = h; + mb_size = ((w + 15) >> 4) * ((h + 15) >> 4); + mb_bits = ff_rv34_get_start_offset(gb, mb_size); + si->start = get_bits(gb, mb_bits); + skip_bits1(gb); + return 0; +} + +/** + * Decode 4x4 intra types array. + */ +static int rv30_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst) +{ + int i, j, k; + + for(i = 0; i < 4; i++, dst += r->intra_types_stride - 4){ + for(j = 0; j < 4; j+= 2){ + int code = svq3_get_ue_golomb(gb) << 1; + if(code >= 81*2){ + av_log(r->s.avctx, AV_LOG_ERROR, "Incorrect intra prediction code\n"); + return -1; + } + for(k = 0; k < 2; k++){ + int A = dst[-r->intra_types_stride] + 1; + int B = dst[-1] + 1; + *dst++ = rv30_itype_from_context[A * 90 + B * 9 + rv30_itype_code[code + k]]; + if(dst[-1] == 9){ + av_log(r->s.avctx, AV_LOG_ERROR, "Incorrect intra prediction mode\n"); + return -1; + } + } + } + } + return 0; +} + +/** + * Decode macroblock information. + */ +static int rv30_decode_mb_info(RV34DecContext *r) +{ + static const int rv30_p_types[6] = { RV34_MB_SKIP, RV34_MB_P_16x16, RV34_MB_P_8x8, -1, RV34_MB_TYPE_INTRA, RV34_MB_TYPE_INTRA16x16 }; + static const int rv30_b_types[6] = { RV34_MB_SKIP, RV34_MB_B_DIRECT, RV34_MB_B_FORWARD, RV34_MB_B_BACKWARD, RV34_MB_TYPE_INTRA, RV34_MB_TYPE_INTRA16x16 }; + MpegEncContext *s = &r->s; + GetBitContext *gb = &s->gb; + int code = svq3_get_ue_golomb(gb); + + if(code > 11){ + av_log(s->avctx, AV_LOG_ERROR, "Incorrect MB type code\n"); + return -1; + } + if(code > 5){ + av_log(s->avctx, AV_LOG_ERROR, "dquant needed\n"); + code -= 6; + } + if(s->pict_type != FF_B_TYPE) + return rv30_p_types[code]; + else + return rv30_b_types[code]; +} + +static inline void rv30_weak_loop_filter(uint8_t *src, const int step, + const int stride, const int lim) +{ + uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; + int i, diff; + + for(i = 0; i < 4; i++){ + diff = ((src[-2*step] - src[1*step]) - (src[-1*step] - src[0*step])*4) >> 3; + diff = av_clip(diff, -lim, lim); + src[-1*step] = cm[src[-1*step] + diff]; + src[ 0*step] = cm[src[ 0*step] - diff]; + src += stride; + } +} + +static void rv30_loop_filter(RV34DecContext *r, int row) +{ + MpegEncContext *s = &r->s; + int mb_pos, mb_x; + int i, j, k; + uint8_t *Y, *C; + int loc_lim, cur_lim, left_lim = 0, top_lim = 0; + + mb_pos = row * s->mb_stride; + for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){ + int mbtype = s->current_picture_ptr->mb_type[mb_pos]; + if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype)) + r->deblock_coefs[mb_pos] = 0xFFFF; + if(IS_INTRA(mbtype)) + r->cbp_chroma[mb_pos] = 0xFF; + } + + /* all vertical edges are filtered first + * and horizontal edges are filtered on the next iteration + */ + mb_pos = row * s->mb_stride; + for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){ + cur_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos]]; + if(mb_x) + left_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos - 1]]; + for(j = 0; j < 16; j += 4){ + Y = s->current_picture_ptr->data[0] + mb_x*16 + (row*16 + j) * s->linesize + 4 * !mb_x; + for(i = !mb_x; i < 4; i++, Y += 4){ + int ij = i + j; + loc_lim = 0; + if(r->deblock_coefs[mb_pos] & (1 << ij)) + loc_lim = cur_lim; + else if(!i && r->deblock_coefs[mb_pos - 1] & (1 << (ij + 3))) + loc_lim = left_lim; + else if( i && r->deblock_coefs[mb_pos] & (1 << (ij - 1))) + loc_lim = cur_lim; + if(loc_lim) + rv30_weak_loop_filter(Y, 1, s->linesize, loc_lim); + } + } + for(k = 0; k < 2; k++){ + int cur_cbp, left_cbp = 0; + cur_cbp = (r->cbp_chroma[mb_pos] >> (k*4)) & 0xF; + if(mb_x) + left_cbp = (r->cbp_chroma[mb_pos - 1] >> (k*4)) & 0xF; + for(j = 0; j < 8; j += 4){ + C = s->current_picture_ptr->data[k+1] + mb_x*8 + (row*8 + j) * s->uvlinesize + 4 * !mb_x; + for(i = !mb_x; i < 2; i++, C += 4){ + int ij = i + (j >> 1); + loc_lim = 0; + if(cur_cbp && (1 << ij)) + loc_lim = cur_lim; + else if(!i && left_cbp & (1 << (ij + 1))) + loc_lim = left_lim; + else if( i && cur_cbp & (1 << (ij - 1))) + loc_lim = cur_lim; + if(loc_lim) + rv30_weak_loop_filter(C, 1, s->uvlinesize, loc_lim); + } + } + } + } + mb_pos = row * s->mb_stride; + for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){ + cur_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos]]; + if(row) + top_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos - s->mb_stride]]; + for(j = 4*!row; j < 16; j += 4){ + Y = s->current_picture_ptr->data[0] + mb_x*16 + (row*16 + j) * s->linesize; + for(i = 0; i < 4; i++, Y += 4){ + int ij = i + j; + loc_lim = 0; + if(r->deblock_coefs[mb_pos] & (1 << ij)) + loc_lim = cur_lim; + else if(!j && r->deblock_coefs[mb_pos - s->mb_stride] & (1 << (ij + 12))) + loc_lim = top_lim; + else if( j && r->deblock_coefs[mb_pos] & (1 << (ij - 4))) + loc_lim = cur_lim; + if(loc_lim) + rv30_weak_loop_filter(Y, s->linesize, 1, loc_lim); + } + } + for(k = 0; k < 2; k++){ + int cur_cbp, top_cbp = 0; + cur_cbp = (r->cbp_chroma[mb_pos] >> (k*4)) & 0xF; + if(row) + top_cbp = (r->cbp_chroma[mb_pos - s->mb_stride] >> (k*4)) & 0xF; + for(j = 4*!row; j < 8; j += 4){ + C = s->current_picture_ptr->data[k+1] + mb_x*8 + (row*8 + j) * s->uvlinesize; + for(i = 0; i < 2; i++, C += 4){ + int ij = i + (j >> 1); + loc_lim = 0; + if(r->cbp_chroma[mb_pos] && (1 << ij)) + loc_lim = cur_lim; + else if(!j && top_cbp & (1 << (ij + 2))) + loc_lim = top_lim; + else if( j && cur_cbp & (1 << (ij - 2))) + loc_lim = cur_lim; + if(loc_lim) + rv30_weak_loop_filter(C, s->uvlinesize, 1, loc_lim); + } + } + } + } +} + +/** + * Initialize decoder. + */ +static av_cold int rv30_decode_init(AVCodecContext *avctx) +{ + RV34DecContext *r = avctx->priv_data; + + r->rv30 = 1; + ff_rv34_decode_init(avctx); + if(avctx->extradata_size < 2){ + av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n"); + return -1; + } + r->rpr = (avctx->extradata[1] & 7) >> 1; + r->rpr = FFMIN(r->rpr + 1, 3); + if(avctx->extradata_size - 8 < (r->rpr - 1) * 2){ + av_log(avctx, AV_LOG_ERROR, "Insufficient extradata - need at least %d bytes, got %d\n", + 6 + r->rpr * 2, avctx->extradata_size); + } + r->parse_slice_header = rv30_parse_slice_header; + r->decode_intra_types = rv30_decode_intra_types; + r->decode_mb_info = rv30_decode_mb_info; + r->loop_filter = rv30_loop_filter; + r->luma_dc_quant_i = rv30_luma_dc_quant; + r->luma_dc_quant_p = rv30_luma_dc_quant; + return 0; +} + +AVCodec rv30_decoder = { + "rv30", + CODEC_TYPE_VIDEO, + CODEC_ID_RV30, + sizeof(RV34DecContext), + /*.init = */rv30_decode_init, + /*.encode = */NULL, + /*.decode = */ff_rv34_decode_end, + /*.close = */ff_rv34_decode_frame, + /*.capabilities = */CODEC_CAP_DR1 | CODEC_CAP_DELAY, + /*.next = */NULL, + /*.flush = */ff_mpeg_flush, + /*.supported_framerates = */NULL, + /*.pix_fmts = */NULL, + /*.long_name = */NULL_IF_CONFIG_SMALL("RealVideo 3.0"), +}; |