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285 lines
9.1 KiB
285 lines
9.1 KiB
/* |
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* Copyright (c) 2003 Michael Niedermayer |
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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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/** |
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* @file |
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* ASUS V1/V2 encoder. |
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*/ |
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#include "libavutil/attributes.h" |
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#include "libavutil/mem.h" |
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#include "asv.h" |
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#include "avcodec.h" |
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#include "internal.h" |
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#include "mathops.h" |
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#include "mpeg12data.h" |
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static inline void asv2_put_bits(PutBitContext *pb, int n, int v){ |
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put_bits(pb, n, ff_reverse[ v << (8-n) ]); |
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} |
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static inline void asv1_put_level(PutBitContext *pb, int level){ |
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unsigned int index= level + 3; |
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if(index <= 6) put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]); |
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else{ |
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put_bits(pb, ff_asv_level_tab[3][1], ff_asv_level_tab[3][0]); |
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put_sbits(pb, 8, level); |
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} |
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} |
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static inline void asv2_put_level(PutBitContext *pb, int level){ |
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unsigned int index= level + 31; |
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if(index <= 62) put_bits(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]); |
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else{ |
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put_bits(pb, ff_asv2_level_tab[31][1], ff_asv2_level_tab[31][0]); |
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asv2_put_bits(pb, 8, level&0xFF); |
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} |
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} |
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static inline void asv1_encode_block(ASV1Context *a, int16_t block[64]){ |
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int i; |
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int nc_count=0; |
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put_bits(&a->pb, 8, (block[0] + 32)>>6); |
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block[0]= 0; |
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for(i=0; i<10; i++){ |
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const int index = ff_asv_scantab[4*i]; |
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int ccp=0; |
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if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8; |
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if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4; |
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if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2; |
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if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1; |
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if(ccp){ |
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for(;nc_count; nc_count--) |
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put_bits(&a->pb, ff_asv_ccp_tab[0][1], ff_asv_ccp_tab[0][0]); |
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put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]); |
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if(ccp&8) asv1_put_level(&a->pb, block[index + 0]); |
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if(ccp&4) asv1_put_level(&a->pb, block[index + 8]); |
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if(ccp&2) asv1_put_level(&a->pb, block[index + 1]); |
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if(ccp&1) asv1_put_level(&a->pb, block[index + 9]); |
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}else{ |
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nc_count++; |
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} |
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} |
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put_bits(&a->pb, ff_asv_ccp_tab[16][1], ff_asv_ccp_tab[16][0]); |
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} |
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static inline void asv2_encode_block(ASV1Context *a, int16_t block[64]){ |
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int i; |
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int count=0; |
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for(count=63; count>3; count--){ |
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const int index = ff_asv_scantab[count]; |
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if( (block[index]*a->q_intra_matrix[index] + (1<<15))>>16 ) |
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break; |
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} |
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count >>= 2; |
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asv2_put_bits(&a->pb, 4, count); |
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asv2_put_bits(&a->pb, 8, (block[0] + 32)>>6); |
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block[0]= 0; |
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for(i=0; i<=count; i++){ |
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const int index = ff_asv_scantab[4*i]; |
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int ccp=0; |
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if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8; |
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if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4; |
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if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2; |
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if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1; |
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av_assert2(i || ccp<8); |
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if(i) put_bits(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]); |
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else put_bits(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]); |
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if(ccp){ |
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if(ccp&8) asv2_put_level(&a->pb, block[index + 0]); |
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if(ccp&4) asv2_put_level(&a->pb, block[index + 8]); |
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if(ccp&2) asv2_put_level(&a->pb, block[index + 1]); |
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if(ccp&1) asv2_put_level(&a->pb, block[index + 9]); |
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} |
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} |
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} |
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#define MAX_MB_SIZE (30*16*16*3/2/8) |
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static inline int encode_mb(ASV1Context *a, int16_t block[6][64]){ |
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int i; |
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if (a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb)>>3) < MAX_MB_SIZE) { |
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av_log(a->avctx, AV_LOG_ERROR, "encoded frame too large\n"); |
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return -1; |
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} |
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if(a->avctx->codec_id == AV_CODEC_ID_ASV1){ |
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for(i=0; i<6; i++) |
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asv1_encode_block(a, block[i]); |
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}else{ |
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for(i=0; i<6; i++) |
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asv2_encode_block(a, block[i]); |
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} |
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return 0; |
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} |
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static inline void dct_get(ASV1Context *a, const AVFrame *frame, |
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int mb_x, int mb_y) |
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{ |
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int16_t (*block)[64]= a->block; |
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int linesize = frame->linesize[0]; |
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int i; |
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uint8_t *ptr_y = frame->data[0] + (mb_y * 16* linesize ) + mb_x * 16; |
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uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8; |
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uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8; |
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a->dsp.get_pixels(block[0], ptr_y , linesize); |
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a->dsp.get_pixels(block[1], ptr_y + 8, linesize); |
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a->dsp.get_pixels(block[2], ptr_y + 8*linesize , linesize); |
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a->dsp.get_pixels(block[3], ptr_y + 8*linesize + 8, linesize); |
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for(i=0; i<4; i++) |
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a->dsp.fdct(block[i]); |
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if(!(a->avctx->flags&CODEC_FLAG_GRAY)){ |
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a->dsp.get_pixels(block[4], ptr_cb, frame->linesize[1]); |
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a->dsp.get_pixels(block[5], ptr_cr, frame->linesize[2]); |
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for(i=4; i<6; i++) |
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a->dsp.fdct(block[i]); |
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} |
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} |
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static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
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const AVFrame *pict, int *got_packet) |
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{ |
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ASV1Context * const a = avctx->priv_data; |
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int size, ret; |
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int mb_x, mb_y; |
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if ((ret = ff_alloc_packet2(avctx, pkt, a->mb_height*a->mb_width*MAX_MB_SIZE + |
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FF_MIN_BUFFER_SIZE)) < 0) |
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return ret; |
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init_put_bits(&a->pb, pkt->data, pkt->size); |
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for(mb_y=0; mb_y<a->mb_height2; mb_y++){ |
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for(mb_x=0; mb_x<a->mb_width2; mb_x++){ |
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dct_get(a, pict, mb_x, mb_y); |
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encode_mb(a, a->block); |
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} |
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} |
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if(a->mb_width2 != a->mb_width){ |
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mb_x= a->mb_width2; |
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for(mb_y=0; mb_y<a->mb_height2; mb_y++){ |
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dct_get(a, pict, mb_x, mb_y); |
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encode_mb(a, a->block); |
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} |
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} |
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if(a->mb_height2 != a->mb_height){ |
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mb_y= a->mb_height2; |
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for(mb_x=0; mb_x<a->mb_width; mb_x++){ |
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dct_get(a, pict, mb_x, mb_y); |
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encode_mb(a, a->block); |
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} |
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} |
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emms_c(); |
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avpriv_align_put_bits(&a->pb); |
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while(put_bits_count(&a->pb)&31) |
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put_bits(&a->pb, 8, 0); |
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size= put_bits_count(&a->pb)/32; |
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if(avctx->codec_id == AV_CODEC_ID_ASV1) |
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a->dsp.bswap_buf((uint32_t*)pkt->data, (uint32_t*)pkt->data, size); |
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else{ |
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int i; |
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for(i=0; i<4*size; i++) |
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pkt->data[i] = ff_reverse[pkt->data[i]]; |
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} |
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pkt->size = size*4; |
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pkt->flags |= AV_PKT_FLAG_KEY; |
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*got_packet = 1; |
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return 0; |
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} |
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static av_cold int encode_init(AVCodecContext *avctx){ |
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ASV1Context * const a = avctx->priv_data; |
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int i; |
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const int scale= avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2; |
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ff_asv_common_init(avctx); |
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if(avctx->global_quality <= 0) avctx->global_quality= 4*FF_QUALITY_SCALE; |
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a->inv_qscale= (32*scale*FF_QUALITY_SCALE + avctx->global_quality/2) / avctx->global_quality; |
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avctx->extradata= av_mallocz(8); |
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avctx->extradata_size=8; |
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((uint32_t*)avctx->extradata)[0]= av_le2ne32(a->inv_qscale); |
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((uint32_t*)avctx->extradata)[1]= av_le2ne32(AV_RL32("ASUS")); |
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for(i=0; i<64; i++){ |
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int q= 32*scale*ff_mpeg1_default_intra_matrix[i]; |
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a->q_intra_matrix[i]= ((a->inv_qscale<<16) + q/2) / q; |
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} |
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return 0; |
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} |
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#if CONFIG_ASV1_ENCODER |
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AVCodec ff_asv1_encoder = { |
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.name = "asv1", |
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.long_name = NULL_IF_CONFIG_SMALL("ASUS V1"), |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_ASV1, |
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.priv_data_size = sizeof(ASV1Context), |
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.init = encode_init, |
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.encode2 = encode_frame, |
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.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, |
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AV_PIX_FMT_NONE }, |
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}; |
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#endif |
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#if CONFIG_ASV2_ENCODER |
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AVCodec ff_asv2_encoder = { |
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.name = "asv2", |
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.long_name = NULL_IF_CONFIG_SMALL("ASUS V2"), |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_ASV2, |
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.priv_data_size = sizeof(ASV1Context), |
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.init = encode_init, |
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.encode2 = encode_frame, |
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.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, |
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AV_PIX_FMT_NONE }, |
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}; |
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#endif
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