/* * 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 "config_components.h" #include "libavutil/attributes.h"#include "libavutil/mem.h"#include "libavutil/mem_internal.h" #include "aandcttab.h"#include "asv.h"#include "avcodec.h"#include "codec_internal.h"#include "encode.h"#include "fdctdsp.h"#include "mpeg12data.h"#include "pixblockdsp.h"#include "put_bits.h" typedef struct ASVEncContext {    ASVCommonContext c;     PutBitContext pb;     PixblockDSPContext pdsp;    FDCTDSPContext fdsp;    DECLARE_ALIGNED(32, int16_t, block)[6][64];    int q_intra_matrix[64];} ASVEncContext; 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, 3, 0); /* Escape code */        put_sbits(pb, 8, level);    }} static inline void asv2_put_level(ASVEncContext *a, PutBitContext *pb, int level){    unsigned int index = level + 31;     if (index <= 62) {        put_bits_le(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);    } else {        put_bits_le(pb, 5, 0); /* Escape code */        if (level < -128 || level > 127) {            av_log(a->c.avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level);            level = av_clip_int8(level);        }        put_bits_le(pb, 8, level & 0xFF);    }} static inline void asv1_encode_block(ASVEncContext *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, 2, 2); /* Skip */             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, 5, 0xF); /* End of block */} static inline void asv2_encode_block(ASVEncContext *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;     put_bits_le(&a->pb, 4, count);    put_bits_le(&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_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);        else            put_bits_le(&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, &a->pb, block[index + 0]);            if (ccp & 4)                asv2_put_level(a, &a->pb, block[index + 8]);            if (ccp & 2)                asv2_put_level(a, &a->pb, block[index + 1]);            if (ccp & 1)                asv2_put_level(a, &a->pb, block[index + 9]);        }    }} #define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8) static inline int encode_mb(ASVEncContext *a, int16_t block[6][64]){    int i;     av_assert0(put_bytes_left(&a->pb, 0) >= MAX_MB_SIZE);     if (a->c.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(ASVEncContext *a, const AVFrame *frame,                           int mb_x, int mb_y){    int16_t (*block)[64] = a->block;    int linesize = frame->linesize[0];    int i;     const uint8_t *ptr_y  = frame->data[0] + (mb_y * 16 * linesize)           + mb_x * 16;    const uint8_t *ptr_cb = frame->data[1] + (mb_y *  8 * frame->linesize[1]) + mb_x *  8;    const uint8_t *ptr_cr = frame->data[2] + (mb_y *  8 * frame->linesize[2]) + mb_x *  8;     a->pdsp.get_pixels(block[0], ptr_y,                    linesize);    a->pdsp.get_pixels(block[1], ptr_y + 8,                linesize);    a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize,     linesize);    a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);    for (i = 0; i < 4; i++)        a->fdsp.fdct(block[i]);     if (!(a->c.avctx->flags & AV_CODEC_FLAG_GRAY)) {        a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);        a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);        for (i = 4; i < 6; i++)            a->fdsp.fdct(block[i]);    }} static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,                        const AVFrame *pict, int *got_packet){    ASVEncContext *const a = avctx->priv_data;    const ASVCommonContext *const c = &a->c;    int size, ret;     if (pict->width % 16 || pict->height % 16) {        AVFrame *clone = av_frame_alloc();        int i;         if (!clone)            return AVERROR(ENOMEM);        clone->format = pict->format;        clone->width  = FFALIGN(pict->width, 16);        clone->height = FFALIGN(pict->height, 16);        ret = av_frame_get_buffer(clone, 0);        if (ret < 0) {            av_frame_free(&clone);            return ret;        }         ret = av_frame_copy(clone, pict);        if (ret < 0) {            av_frame_free(&clone);            return ret;        }         for (i = 0; i<3; i++) {            int x, y;            int w  = AV_CEIL_RSHIFT(pict->width, !!i);            int h  = AV_CEIL_RSHIFT(pict->height, !!i);            int w2 = AV_CEIL_RSHIFT(clone->width, !!i);            int h2 = AV_CEIL_RSHIFT(clone->height, !!i);            for (y=0; y<h; y++)                for (x=w; x<w2; x++)                    clone->data[i][x + y*clone->linesize[i]] =                        clone->data[i][w - 1 + y*clone->linesize[i]];            for (y=h; y<h2; y++)                for (x=0; x<w2; x++)                    clone->data[i][x + y*clone->linesize[i]] =                        clone->data[i][x + (h-1)*clone->linesize[i]];        }        ret = encode_frame(avctx, pkt, clone, got_packet);         av_frame_free(&clone);        return ret;    }     if ((ret = ff_alloc_packet(avctx, pkt, c->mb_height * c->mb_width * MAX_MB_SIZE +                               FF_INPUT_BUFFER_MIN_SIZE)) < 0)        return ret;     init_put_bits(&a->pb, pkt->data, pkt->size);     for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) {        for (int mb_x = 0; mb_x < c->mb_width2; mb_x++) {            dct_get(a, pict, mb_x, mb_y);            encode_mb(a, a->block);        }    }     if (c->mb_width2 != c->mb_width) {        int mb_x = c->mb_width2;        for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) {            dct_get(a, pict, mb_x, mb_y);            encode_mb(a, a->block);        }    }     if (c->mb_height2 != c->mb_height) {        int mb_y = c->mb_height2;        for (int mb_x = 0; mb_x < c->mb_width; mb_x++) {            dct_get(a, pict, mb_x, mb_y);            encode_mb(a, a->block);        }    }     if (avctx->codec_id == AV_CODEC_ID_ASV1)        flush_put_bits(&a->pb);    else        flush_put_bits_le(&a->pb);    AV_WN32(put_bits_ptr(&a->pb), 0);    size = (put_bytes_output(&a->pb) + 3) / 4;     if (avctx->codec_id == AV_CODEC_ID_ASV1) {        c->bbdsp.bswap_buf((uint32_t *) pkt->data,                           (uint32_t *) pkt->data, size);    }     pkt->size   = size * 4;    *got_packet = 1;     return 0;} static av_cold int encode_init(AVCodecContext *avctx){    ASVEncContext *const a = avctx->priv_data;    int i;    const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;    int inv_qscale;     ff_asv_common_init(avctx);    ff_fdctdsp_init(&a->fdsp, avctx);    ff_pixblockdsp_init(&a->pdsp, avctx);     if (avctx->global_quality <= 0)        avctx->global_quality = 4 * FF_QUALITY_SCALE;     inv_qscale = (32 * scale * FF_QUALITY_SCALE +                     avctx->global_quality / 2) / avctx->global_quality;     avctx->extradata                   = av_mallocz(8);    if (!avctx->extradata)        return AVERROR(ENOMEM);    avctx->extradata_size              = 8;    AV_WLA(32, avctx->extradata, inv_qscale);    ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));     for (i = 0; i < 64; i++) {        if (a->fdsp.fdct == ff_fdct_ifast) {            int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];            a->q_intra_matrix[i] = (((int64_t)inv_qscale << 30) + q / 2) / q;        } else {            int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];            a->q_intra_matrix[i] = ((inv_qscale << 16) + q / 2) / q;        }    }     return 0;} #if CONFIG_ASV1_ENCODERconst FFCodec ff_asv1_encoder = {    .p.name         = "asv1",    CODEC_LONG_NAME("ASUS V1"),    .p.type         = AVMEDIA_TYPE_VIDEO,    .p.id           = AV_CODEC_ID_ASV1,    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,    .priv_data_size = sizeof(ASVEncContext),    .init           = encode_init,    FF_CODEC_ENCODE_CB(encode_frame),    .p.pix_fmts     = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,                                                     AV_PIX_FMT_NONE },    .color_ranges   = AVCOL_RANGE_MPEG,};#endif #if CONFIG_ASV2_ENCODERconst FFCodec ff_asv2_encoder = {    .p.name         = "asv2",    CODEC_LONG_NAME("ASUS V2"),    .p.type         = AVMEDIA_TYPE_VIDEO,    .p.id           = AV_CODEC_ID_ASV2,    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,    .priv_data_size = sizeof(ASVEncContext),    .init           = encode_init,    FF_CODEC_ENCODE_CB(encode_frame),    .p.pix_fmts     = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,                                                     AV_PIX_FMT_NONE },    .color_ranges   = AVCOL_RANGE_MPEG,};#endif