diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/rv30.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/rv30.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/contrib/ffmpeg/libavcodec/rv30.c b/contrib/ffmpeg/libavcodec/rv30.c deleted file mode 100644 index ff7b32d1e..000000000 --- a/contrib/ffmpeg/libavcodec/rv30.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * 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 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; - - memset(si, 0, sizeof(SliceInfo)); - skip_bits(gb, 3); - 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); - skip_bits(gb, 13); // timestamp - skip_bits(gb, r->rpr); - 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->s.b4_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->s.b4_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 != B_TYPE) - return rv30_p_types[code]; - else - return rv30_b_types[code]; -} - -/** - * Initialize decoder. - */ -static 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); - 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->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), - rv30_decode_init, - NULL, - ff_rv34_decode_end, - ff_rv34_decode_frame, - CODEC_CAP_DR1 | CODEC_CAP_DELAY, -}; |