From 233a5a807e766425190941a8226988a4332ca9ad Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Mon, 8 Oct 2012 12:03:08 +0200 Subject: lavc: split asv12 encoder/decoder --- libavcodec/asvenc.c | 287 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 287 insertions(+) create mode 100644 libavcodec/asvenc.c (limited to 'libavcodec/asvenc.c') diff --git a/libavcodec/asvenc.c b/libavcodec/asvenc.c new file mode 100644 index 0000000000..bf2cdafb62 --- /dev/null +++ b/libavcodec/asvenc.c @@ -0,0 +1,287 @@ +/* + * Copyright (c) 2003 Michael Niedermayer + * + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; 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/common.h" +#include "libavutil/mem.h" + +#include "asv.h" +#include "avcodec.h" +#include "mpeg12data.h" + +static inline void asv2_put_bits(PutBitContext *pb, int n, int v){ + put_bits(pb, n, av_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, DCTELEM 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, DCTELEM 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; + + assert(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, DCTELEM 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, int mb_x, int mb_y){ + DCTELEM (*block)[64]= a->block; + int linesize= a->picture.linesize[0]; + int i; + + uint8_t *ptr_y = a->picture.data[0] + (mb_y * 16* linesize ) + mb_x * 16; + uint8_t *ptr_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8; + uint8_t *ptr_cr = a->picture.data[2] + (mb_y * 8 * a->picture.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, a->picture.linesize[1]); + a->dsp.get_pixels(block[5], ptr_cr, a->picture.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; + AVFrame * const p= &a->picture; + int size, ret; + int mb_x, mb_y; + + if (!pkt->data && + (ret = av_new_packet(pkt, a->mb_height*a->mb_width*MAX_MB_SIZE + + FF_MIN_BUFFER_SIZE)) < 0) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); + return ret; + } + + init_put_bits(&a->pb, pkt->data, pkt->size); + + *p = *pict; + p->pict_type= AV_PICTURE_TYPE_I; + p->key_frame= 1; + + for(mb_y=0; mb_ymb_height2; mb_y++){ + for(mb_x=0; mb_xmb_width2; mb_x++){ + dct_get(a, 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_ymb_height2; mb_y++){ + dct_get(a, 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_xmb_width; mb_x++){ + dct_get(a, 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] = av_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", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_ASV1, + .priv_data_size = sizeof(ASV1Context), + .init = encode_init, + .encode2 = encode_frame, + .pix_fmts = (const enum PixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, + .long_name = NULL_IF_CONFIG_SMALL("ASUS V1"), +}; +#endif + +#if CONFIG_ASV2_ENCODER +AVCodec ff_asv2_encoder = { + .name = "asv2", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_ASV2, + .priv_data_size = sizeof(ASV1Context), + .init = encode_init, + .encode2 = encode_frame, + .pix_fmts = (const enum PixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, + .long_name = NULL_IF_CONFIG_SMALL("ASUS V2"), +}; +#endif -- cgit v1.2.3