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104 lines
3.5 KiB
104 lines
3.5 KiB
/* |
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* H.263 encoder header |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_H263ENC_H |
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#define AVCODEC_H263ENC_H |
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#include <stdint.h> |
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#include "h263data.h" |
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#include "mpegvideoenc.h" |
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void ff_h263_encode_init(MpegEncContext *s); |
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void ff_h263_encode_picture_header(MpegEncContext *s); |
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void ff_h263_encode_gob_header(MpegEncContext * s, int mb_line); |
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void ff_h263_encode_mb(MpegEncContext *s, |
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int16_t block[6][64], |
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int motion_x, int motion_y); |
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void ff_h263_encode_mba(MpegEncContext *s); |
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void ff_clean_h263_qscales(MpegEncContext *s); |
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void ff_h263_encode_motion(PutBitContext *pb, int val, int f_code); |
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void ff_h263_update_mb(MpegEncContext *s); |
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static inline void ff_h263_encode_motion_vector(MpegEncContext * s, |
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int x, int y, int f_code) |
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{ |
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ff_h263_encode_motion(&s->pb, x, f_code); |
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ff_h263_encode_motion(&s->pb, y, f_code); |
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} |
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static inline int get_p_cbp(MpegEncContext * s, |
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int16_t block[6][64], |
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int motion_x, int motion_y){ |
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int cbp; |
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if (s->mpv_flags & FF_MPV_FLAG_CBP_RD) { |
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int best_cbpy_score = INT_MAX; |
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int best_cbpc_score = INT_MAX; |
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int cbpc = (-1), cbpy = (-1); |
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const int offset = (s->mv_type == MV_TYPE_16X16 ? 0 : 16) + (s->dquant ? 8 : 0); |
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const int lambda = s->lambda2 >> (FF_LAMBDA_SHIFT - 6); |
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for (int i = 0; i < 4; i++) { |
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int score = ff_h263_inter_MCBPC_bits[i + offset] * lambda; |
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if (i & 1) score += s->coded_score[5]; |
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if (i & 2) score += s->coded_score[4]; |
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if (score < best_cbpc_score) { |
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best_cbpc_score = score; |
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cbpc = i; |
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} |
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} |
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for (int i = 0; i < 16; i++) { |
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int score= ff_h263_cbpy_tab[i ^ 0xF][1] * lambda; |
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if (i & 1) score += s->coded_score[3]; |
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if (i & 2) score += s->coded_score[2]; |
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if (i & 4) score += s->coded_score[1]; |
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if (i & 8) score += s->coded_score[0]; |
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if (score < best_cbpy_score) { |
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best_cbpy_score = score; |
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cbpy = i; |
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} |
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} |
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cbp = cbpc + 4 * cbpy; |
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if (!(motion_x | motion_y | s->dquant) && s->mv_type == MV_TYPE_16X16) { |
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if (best_cbpy_score + best_cbpc_score + 2 * lambda >= 0) |
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cbp= 0; |
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} |
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for (int i = 0; i < 6; i++) { |
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if (s->block_last_index[i] >= 0 && !((cbp >> (5 - i)) & 1)) { |
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s->block_last_index[i] = -1; |
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s->bdsp.clear_block(s->block[i]); |
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} |
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} |
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} else { |
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cbp = 0; |
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for (int i = 0; i < 6; i++) { |
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if (s->block_last_index[i] >= 0) |
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cbp |= 1 << (5 - i); |
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} |
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} |
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return cbp; |
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} |
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#endif
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