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