862 lines
29 KiB
C
862 lines
29 KiB
C
/*
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* VC3/DNxHD encoder
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* Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
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*
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* VC-3 encoder funded by the British Broadcasting Corporation
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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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//#define DEBUG
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#define RC_VARIANCE 1 // use variance or ssd for fast rc
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#include "avcodec.h"
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#include "dsputil.h"
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#include "mpegvideo.h"
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#include "dnxhdenc.h"
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int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
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#define LAMBDA_FRAC_BITS 10
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static av_always_inline void dnxhd_get_pixels_8x4(DCTELEM *restrict block, const uint8_t *pixels, int line_size)
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{
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int i;
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for (i = 0; i < 4; i++) {
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block[0] = pixels[0]; block[1] = pixels[1];
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block[2] = pixels[2]; block[3] = pixels[3];
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block[4] = pixels[4]; block[5] = pixels[5];
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block[6] = pixels[6]; block[7] = pixels[7];
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pixels += line_size;
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block += 8;
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}
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memcpy(block , block- 8, sizeof(*block)*8);
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memcpy(block+ 8, block-16, sizeof(*block)*8);
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memcpy(block+16, block-24, sizeof(*block)*8);
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memcpy(block+24, block-32, sizeof(*block)*8);
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}
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static int dnxhd_init_vlc(DNXHDEncContext *ctx)
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{
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int i, j, level, run;
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int max_level = 1<<(ctx->cid_table->bit_depth+2);
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->vlc_codes, max_level*4*sizeof(*ctx->vlc_codes), fail);
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->vlc_bits , max_level*4*sizeof(*ctx->vlc_bits ), fail);
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->run_codes, 63*2 , fail);
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->run_bits , 63 , fail);
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ctx->vlc_codes += max_level*2;
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ctx->vlc_bits += max_level*2;
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for (level = -max_level; level < max_level; level++) {
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for (run = 0; run < 2; run++) {
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int index = (level<<1)|run;
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int sign, offset = 0, alevel = level;
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MASK_ABS(sign, alevel);
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if (alevel > 64) {
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offset = (alevel-1)>>6;
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alevel -= offset<<6;
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}
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for (j = 0; j < 257; j++) {
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if (ctx->cid_table->ac_level[j] == alevel &&
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(!offset || (ctx->cid_table->ac_index_flag[j] && offset)) &&
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(!run || (ctx->cid_table->ac_run_flag [j] && run))) {
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assert(!ctx->vlc_codes[index]);
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if (alevel) {
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ctx->vlc_codes[index] = (ctx->cid_table->ac_codes[j]<<1)|(sign&1);
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ctx->vlc_bits [index] = ctx->cid_table->ac_bits[j]+1;
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} else {
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ctx->vlc_codes[index] = ctx->cid_table->ac_codes[j];
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ctx->vlc_bits [index] = ctx->cid_table->ac_bits [j];
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}
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break;
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}
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}
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assert(!alevel || j < 257);
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if (offset) {
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ctx->vlc_codes[index] = (ctx->vlc_codes[index]<<ctx->cid_table->index_bits)|offset;
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ctx->vlc_bits [index]+= ctx->cid_table->index_bits;
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}
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}
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}
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for (i = 0; i < 62; i++) {
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int run = ctx->cid_table->run[i];
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assert(run < 63);
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ctx->run_codes[run] = ctx->cid_table->run_codes[i];
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ctx->run_bits [run] = ctx->cid_table->run_bits[i];
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}
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return 0;
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fail:
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return -1;
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}
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static int dnxhd_init_qmat(DNXHDEncContext *ctx, int lbias, int cbias)
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{
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// init first elem to 1 to avoid div by 0 in convert_matrix
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uint16_t weight_matrix[64] = {1,}; // convert_matrix needs uint16_t*
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int qscale, i;
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l, (ctx->m.avctx->qmax+1) * 64 * sizeof(int) , fail);
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c, (ctx->m.avctx->qmax+1) * 64 * sizeof(int) , fail);
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l16, (ctx->m.avctx->qmax+1) * 64 * 2 * sizeof(uint16_t), fail);
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c16, (ctx->m.avctx->qmax+1) * 64 * 2 * sizeof(uint16_t), fail);
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for (i = 1; i < 64; i++) {
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int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]];
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weight_matrix[j] = ctx->cid_table->luma_weight[i];
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}
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ff_convert_matrix(&ctx->m.dsp, ctx->qmatrix_l, ctx->qmatrix_l16, weight_matrix,
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ctx->m.intra_quant_bias, 1, ctx->m.avctx->qmax, 1);
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for (i = 1; i < 64; i++) {
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int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]];
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weight_matrix[j] = ctx->cid_table->chroma_weight[i];
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}
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ff_convert_matrix(&ctx->m.dsp, ctx->qmatrix_c, ctx->qmatrix_c16, weight_matrix,
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ctx->m.intra_quant_bias, 1, ctx->m.avctx->qmax, 1);
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for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) {
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for (i = 0; i < 64; i++) {
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ctx->qmatrix_l [qscale] [i] <<= 2; ctx->qmatrix_c [qscale] [i] <<= 2;
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ctx->qmatrix_l16[qscale][0][i] <<= 2; ctx->qmatrix_l16[qscale][1][i] <<= 2;
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ctx->qmatrix_c16[qscale][0][i] <<= 2; ctx->qmatrix_c16[qscale][1][i] <<= 2;
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}
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}
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return 0;
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fail:
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return -1;
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}
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static int dnxhd_init_rc(DNXHDEncContext *ctx)
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{
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_rc, 8160*ctx->m.avctx->qmax*sizeof(RCEntry), fail);
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if (ctx->m.avctx->mb_decision != FF_MB_DECISION_RD)
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_cmp, ctx->m.mb_num*sizeof(RCCMPEntry), fail);
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ctx->frame_bits = (ctx->cid_table->coding_unit_size - 640 - 4) * 8;
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ctx->qscale = 1;
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ctx->lambda = 2<<LAMBDA_FRAC_BITS; // qscale 2
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return 0;
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fail:
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return -1;
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}
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static int dnxhd_encode_init(AVCodecContext *avctx)
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{
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DNXHDEncContext *ctx = avctx->priv_data;
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int i, index;
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ctx->cid = ff_dnxhd_find_cid(avctx);
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if (!ctx->cid || avctx->pix_fmt != PIX_FMT_YUV422P) {
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av_log(avctx, AV_LOG_ERROR, "video parameters incompatible with DNxHD\n");
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return -1;
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}
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av_log(avctx, AV_LOG_DEBUG, "cid %d\n", ctx->cid);
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index = ff_dnxhd_get_cid_table(ctx->cid);
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ctx->cid_table = &ff_dnxhd_cid_table[index];
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ctx->m.avctx = avctx;
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ctx->m.mb_intra = 1;
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ctx->m.h263_aic = 1;
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ctx->get_pixels_8x4_sym = dnxhd_get_pixels_8x4;
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dsputil_init(&ctx->m.dsp, avctx);
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ff_dct_common_init(&ctx->m);
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#if HAVE_MMX
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ff_dnxhd_init_mmx(ctx);
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#endif
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if (!ctx->m.dct_quantize)
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ctx->m.dct_quantize = dct_quantize_c;
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ctx->m.mb_height = (avctx->height + 15) / 16;
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ctx->m.mb_width = (avctx->width + 15) / 16;
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if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) {
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ctx->interlaced = 1;
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ctx->m.mb_height /= 2;
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}
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ctx->m.mb_num = ctx->m.mb_height * ctx->m.mb_width;
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if (avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
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ctx->m.intra_quant_bias = avctx->intra_quant_bias;
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if (dnxhd_init_qmat(ctx, ctx->m.intra_quant_bias, 0) < 0) // XXX tune lbias/cbias
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return -1;
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if (dnxhd_init_vlc(ctx) < 0)
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return -1;
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if (dnxhd_init_rc(ctx) < 0)
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return -1;
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_size, ctx->m.mb_height*sizeof(uint32_t), fail);
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_offs, ctx->m.mb_height*sizeof(uint32_t), fail);
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_bits, ctx->m.mb_num *sizeof(uint16_t), fail);
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FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_qscale, ctx->m.mb_num *sizeof(uint8_t) , fail);
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ctx->frame.key_frame = 1;
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ctx->frame.pict_type = FF_I_TYPE;
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ctx->m.avctx->coded_frame = &ctx->frame;
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if (avctx->thread_count > MAX_THREADS) {
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av_log(avctx, AV_LOG_ERROR, "too many threads\n");
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return -1;
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}
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ctx->thread[0] = ctx;
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for (i = 1; i < avctx->thread_count; i++) {
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ctx->thread[i] = av_malloc(sizeof(DNXHDEncContext));
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memcpy(ctx->thread[i], ctx, sizeof(DNXHDEncContext));
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}
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return 0;
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fail: //for FF_ALLOCZ_OR_GOTO
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return -1;
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}
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static int dnxhd_write_header(AVCodecContext *avctx, uint8_t *buf)
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{
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DNXHDEncContext *ctx = avctx->priv_data;
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const uint8_t header_prefix[5] = { 0x00,0x00,0x02,0x80,0x01 };
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memset(buf, 0, 640);
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memcpy(buf, header_prefix, 5);
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buf[5] = ctx->interlaced ? ctx->cur_field+2 : 0x01;
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buf[6] = 0x80; // crc flag off
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buf[7] = 0xa0; // reserved
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AV_WB16(buf + 0x18, avctx->height>>ctx->interlaced); // ALPF
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AV_WB16(buf + 0x1a, avctx->width); // SPL
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AV_WB16(buf + 0x1d, avctx->height>>ctx->interlaced); // NAL
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buf[0x21] = 0x38; // FIXME 8 bit per comp
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buf[0x22] = 0x88 + (ctx->interlaced<<2);
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AV_WB32(buf + 0x28, ctx->cid); // CID
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buf[0x2c] = ctx->interlaced ? 0 : 0x80;
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buf[0x5f] = 0x01; // UDL
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buf[0x167] = 0x02; // reserved
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AV_WB16(buf + 0x16a, ctx->m.mb_height * 4 + 4); // MSIPS
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buf[0x16d] = ctx->m.mb_height; // Ns
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buf[0x16f] = 0x10; // reserved
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ctx->msip = buf + 0x170;
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return 0;
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}
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static av_always_inline void dnxhd_encode_dc(DNXHDEncContext *ctx, int diff)
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{
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int nbits;
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if (diff < 0) {
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nbits = av_log2_16bit(-2*diff);
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diff--;
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} else {
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nbits = av_log2_16bit(2*diff);
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}
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put_bits(&ctx->m.pb, ctx->cid_table->dc_bits[nbits] + nbits,
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(ctx->cid_table->dc_codes[nbits]<<nbits) + (diff & ((1 << nbits) - 1)));
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}
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static av_always_inline void dnxhd_encode_block(DNXHDEncContext *ctx, DCTELEM *block, int last_index, int n)
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{
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int last_non_zero = 0;
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int slevel, i, j;
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dnxhd_encode_dc(ctx, block[0] - ctx->m.last_dc[n]);
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ctx->m.last_dc[n] = block[0];
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for (i = 1; i <= last_index; i++) {
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j = ctx->m.intra_scantable.permutated[i];
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slevel = block[j];
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if (slevel) {
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int run_level = i - last_non_zero - 1;
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int rlevel = (slevel<<1)|!!run_level;
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put_bits(&ctx->m.pb, ctx->vlc_bits[rlevel], ctx->vlc_codes[rlevel]);
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if (run_level)
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put_bits(&ctx->m.pb, ctx->run_bits[run_level], ctx->run_codes[run_level]);
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last_non_zero = i;
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}
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}
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put_bits(&ctx->m.pb, ctx->vlc_bits[0], ctx->vlc_codes[0]); // EOB
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}
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static av_always_inline void dnxhd_unquantize_c(DNXHDEncContext *ctx, DCTELEM *block, int n, int qscale, int last_index)
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{
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const uint8_t *weight_matrix;
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int level;
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int i;
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weight_matrix = (n&2) ? ctx->cid_table->chroma_weight : ctx->cid_table->luma_weight;
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for (i = 1; i <= last_index; i++) {
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int j = ctx->m.intra_scantable.permutated[i];
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level = block[j];
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if (level) {
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if (level < 0) {
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level = (1-2*level) * qscale * weight_matrix[i];
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if (weight_matrix[i] != 32)
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level += 32;
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level >>= 6;
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level = -level;
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} else {
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level = (2*level+1) * qscale * weight_matrix[i];
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if (weight_matrix[i] != 32)
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level += 32;
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level >>= 6;
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}
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block[j] = level;
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}
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}
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}
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static av_always_inline int dnxhd_ssd_block(DCTELEM *qblock, DCTELEM *block)
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{
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int score = 0;
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int i;
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for (i = 0; i < 64; i++)
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score += (block[i]-qblock[i])*(block[i]-qblock[i]);
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return score;
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}
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static av_always_inline int dnxhd_calc_ac_bits(DNXHDEncContext *ctx, DCTELEM *block, int last_index)
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{
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int last_non_zero = 0;
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int bits = 0;
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int i, j, level;
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for (i = 1; i <= last_index; i++) {
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j = ctx->m.intra_scantable.permutated[i];
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level = block[j];
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if (level) {
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int run_level = i - last_non_zero - 1;
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bits += ctx->vlc_bits[(level<<1)|!!run_level]+ctx->run_bits[run_level];
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last_non_zero = i;
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}
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}
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return bits;
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}
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static av_always_inline void dnxhd_get_blocks(DNXHDEncContext *ctx, int mb_x, int mb_y)
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{
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const uint8_t *ptr_y = ctx->thread[0]->src[0] + ((mb_y << 4) * ctx->m.linesize) + (mb_x << 4);
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const uint8_t *ptr_u = ctx->thread[0]->src[1] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << 3);
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const uint8_t *ptr_v = ctx->thread[0]->src[2] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << 3);
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DSPContext *dsp = &ctx->m.dsp;
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dsp->get_pixels(ctx->blocks[0], ptr_y , ctx->m.linesize);
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dsp->get_pixels(ctx->blocks[1], ptr_y + 8, ctx->m.linesize);
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dsp->get_pixels(ctx->blocks[2], ptr_u , ctx->m.uvlinesize);
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dsp->get_pixels(ctx->blocks[3], ptr_v , ctx->m.uvlinesize);
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if (mb_y+1 == ctx->m.mb_height && ctx->m.avctx->height == 1080) {
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if (ctx->interlaced) {
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ctx->get_pixels_8x4_sym(ctx->blocks[4], ptr_y + ctx->dct_y_offset , ctx->m.linesize);
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ctx->get_pixels_8x4_sym(ctx->blocks[5], ptr_y + ctx->dct_y_offset + 8, ctx->m.linesize);
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ctx->get_pixels_8x4_sym(ctx->blocks[6], ptr_u + ctx->dct_uv_offset , ctx->m.uvlinesize);
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ctx->get_pixels_8x4_sym(ctx->blocks[7], ptr_v + ctx->dct_uv_offset , ctx->m.uvlinesize);
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} else {
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dsp->clear_block(ctx->blocks[4]); dsp->clear_block(ctx->blocks[5]);
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dsp->clear_block(ctx->blocks[6]); dsp->clear_block(ctx->blocks[7]);
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}
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} else {
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dsp->get_pixels(ctx->blocks[4], ptr_y + ctx->dct_y_offset , ctx->m.linesize);
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dsp->get_pixels(ctx->blocks[5], ptr_y + ctx->dct_y_offset + 8, ctx->m.linesize);
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dsp->get_pixels(ctx->blocks[6], ptr_u + ctx->dct_uv_offset , ctx->m.uvlinesize);
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dsp->get_pixels(ctx->blocks[7], ptr_v + ctx->dct_uv_offset , ctx->m.uvlinesize);
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}
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}
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static av_always_inline int dnxhd_switch_matrix(DNXHDEncContext *ctx, int i)
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{
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if (i&2) {
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ctx->m.q_intra_matrix16 = ctx->qmatrix_c16;
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ctx->m.q_intra_matrix = ctx->qmatrix_c;
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return 1 + (i&1);
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} else {
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ctx->m.q_intra_matrix16 = ctx->qmatrix_l16;
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ctx->m.q_intra_matrix = ctx->qmatrix_l;
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return 0;
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}
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}
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static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
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{
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DNXHDEncContext *ctx = avctx->priv_data;
|
|
int mb_y = jobnr, mb_x;
|
|
int qscale = ctx->qscale;
|
|
LOCAL_ALIGNED_16(DCTELEM, block, [64]);
|
|
ctx = ctx->thread[threadnr];
|
|
|
|
ctx->m.last_dc[0] =
|
|
ctx->m.last_dc[1] =
|
|
ctx->m.last_dc[2] = 1024;
|
|
|
|
for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
|
|
unsigned mb = mb_y * ctx->m.mb_width + mb_x;
|
|
int ssd = 0;
|
|
int ac_bits = 0;
|
|
int dc_bits = 0;
|
|
int i;
|
|
|
|
dnxhd_get_blocks(ctx, mb_x, mb_y);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
DCTELEM *src_block = ctx->blocks[i];
|
|
int overflow, nbits, diff, last_index;
|
|
int n = dnxhd_switch_matrix(ctx, i);
|
|
|
|
memcpy(block, src_block, 64*sizeof(*block));
|
|
last_index = ctx->m.dct_quantize((MpegEncContext*)ctx, block, i, qscale, &overflow);
|
|
ac_bits += dnxhd_calc_ac_bits(ctx, block, last_index);
|
|
|
|
diff = block[0] - ctx->m.last_dc[n];
|
|
if (diff < 0) nbits = av_log2_16bit(-2*diff);
|
|
else nbits = av_log2_16bit( 2*diff);
|
|
dc_bits += ctx->cid_table->dc_bits[nbits] + nbits;
|
|
|
|
ctx->m.last_dc[n] = block[0];
|
|
|
|
if (avctx->mb_decision == FF_MB_DECISION_RD || !RC_VARIANCE) {
|
|
dnxhd_unquantize_c(ctx, block, i, qscale, last_index);
|
|
ctx->m.dsp.idct(block);
|
|
ssd += dnxhd_ssd_block(block, src_block);
|
|
}
|
|
}
|
|
ctx->mb_rc[qscale][mb].ssd = ssd;
|
|
ctx->mb_rc[qscale][mb].bits = ac_bits+dc_bits+12+8*ctx->vlc_bits[0];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
|
|
{
|
|
DNXHDEncContext *ctx = avctx->priv_data;
|
|
int mb_y = jobnr, mb_x;
|
|
ctx = ctx->thread[threadnr];
|
|
init_put_bits(&ctx->m.pb, (uint8_t *)arg + 640 + ctx->slice_offs[jobnr], ctx->slice_size[jobnr]);
|
|
|
|
ctx->m.last_dc[0] =
|
|
ctx->m.last_dc[1] =
|
|
ctx->m.last_dc[2] = 1024;
|
|
for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
|
|
unsigned mb = mb_y * ctx->m.mb_width + mb_x;
|
|
int qscale = ctx->mb_qscale[mb];
|
|
int i;
|
|
|
|
put_bits(&ctx->m.pb, 12, qscale<<1);
|
|
|
|
dnxhd_get_blocks(ctx, mb_x, mb_y);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
DCTELEM *block = ctx->blocks[i];
|
|
int last_index, overflow;
|
|
int n = dnxhd_switch_matrix(ctx, i);
|
|
last_index = ctx->m.dct_quantize((MpegEncContext*)ctx, block, i, qscale, &overflow);
|
|
//START_TIMER;
|
|
dnxhd_encode_block(ctx, block, last_index, n);
|
|
//STOP_TIMER("encode_block");
|
|
}
|
|
}
|
|
if (put_bits_count(&ctx->m.pb)&31)
|
|
put_bits(&ctx->m.pb, 32-(put_bits_count(&ctx->m.pb)&31), 0);
|
|
flush_put_bits(&ctx->m.pb);
|
|
return 0;
|
|
}
|
|
|
|
static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx)
|
|
{
|
|
int mb_y, mb_x;
|
|
int offset = 0;
|
|
for (mb_y = 0; mb_y < ctx->m.mb_height; mb_y++) {
|
|
int thread_size;
|
|
ctx->slice_offs[mb_y] = offset;
|
|
ctx->slice_size[mb_y] = 0;
|
|
for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
|
|
unsigned mb = mb_y * ctx->m.mb_width + mb_x;
|
|
ctx->slice_size[mb_y] += ctx->mb_bits[mb];
|
|
}
|
|
ctx->slice_size[mb_y] = (ctx->slice_size[mb_y]+31)&~31;
|
|
ctx->slice_size[mb_y] >>= 3;
|
|
thread_size = ctx->slice_size[mb_y];
|
|
offset += thread_size;
|
|
}
|
|
}
|
|
|
|
static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
|
|
{
|
|
DNXHDEncContext *ctx = avctx->priv_data;
|
|
int mb_y = jobnr, mb_x;
|
|
ctx = ctx->thread[threadnr];
|
|
for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
|
|
unsigned mb = mb_y * ctx->m.mb_width + mb_x;
|
|
uint8_t *pix = ctx->thread[0]->src[0] + ((mb_y<<4) * ctx->m.linesize) + (mb_x<<4);
|
|
int sum = ctx->m.dsp.pix_sum(pix, ctx->m.linesize);
|
|
int varc = (ctx->m.dsp.pix_norm1(pix, ctx->m.linesize) - (((unsigned)(sum*sum))>>8)+128)>>8;
|
|
ctx->mb_cmp[mb].value = varc;
|
|
ctx->mb_cmp[mb].mb = mb;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int dnxhd_encode_rdo(AVCodecContext *avctx, DNXHDEncContext *ctx)
|
|
{
|
|
int lambda, up_step, down_step;
|
|
int last_lower = INT_MAX, last_higher = 0;
|
|
int x, y, q;
|
|
|
|
for (q = 1; q < avctx->qmax; q++) {
|
|
ctx->qscale = q;
|
|
avctx->execute2(avctx, dnxhd_calc_bits_thread, NULL, NULL, ctx->m.mb_height);
|
|
}
|
|
up_step = down_step = 2<<LAMBDA_FRAC_BITS;
|
|
lambda = ctx->lambda;
|
|
|
|
for (;;) {
|
|
int bits = 0;
|
|
int end = 0;
|
|
if (lambda == last_higher) {
|
|
lambda++;
|
|
end = 1; // need to set final qscales/bits
|
|
}
|
|
for (y = 0; y < ctx->m.mb_height; y++) {
|
|
for (x = 0; x < ctx->m.mb_width; x++) {
|
|
unsigned min = UINT_MAX;
|
|
int qscale = 1;
|
|
int mb = y*ctx->m.mb_width+x;
|
|
for (q = 1; q < avctx->qmax; q++) {
|
|
unsigned score = ctx->mb_rc[q][mb].bits*lambda+(ctx->mb_rc[q][mb].ssd<<LAMBDA_FRAC_BITS);
|
|
if (score < min) {
|
|
min = score;
|
|
qscale = q;
|
|
}
|
|
}
|
|
bits += ctx->mb_rc[qscale][mb].bits;
|
|
ctx->mb_qscale[mb] = qscale;
|
|
ctx->mb_bits[mb] = ctx->mb_rc[qscale][mb].bits;
|
|
}
|
|
bits = (bits+31)&~31; // padding
|
|
if (bits > ctx->frame_bits)
|
|
break;
|
|
}
|
|
//av_dlog(ctx->m.avctx, "lambda %d, up %u, down %u, bits %d, frame %d\n",
|
|
// lambda, last_higher, last_lower, bits, ctx->frame_bits);
|
|
if (end) {
|
|
if (bits > ctx->frame_bits)
|
|
return -1;
|
|
break;
|
|
}
|
|
if (bits < ctx->frame_bits) {
|
|
last_lower = FFMIN(lambda, last_lower);
|
|
if (last_higher != 0)
|
|
lambda = (lambda+last_higher)>>1;
|
|
else
|
|
lambda -= down_step;
|
|
down_step *= 5; // XXX tune ?
|
|
up_step = 1<<LAMBDA_FRAC_BITS;
|
|
lambda = FFMAX(1, lambda);
|
|
if (lambda == last_lower)
|
|
break;
|
|
} else {
|
|
last_higher = FFMAX(lambda, last_higher);
|
|
if (last_lower != INT_MAX)
|
|
lambda = (lambda+last_lower)>>1;
|
|
else if ((int64_t)lambda + up_step > INT_MAX)
|
|
return -1;
|
|
else
|
|
lambda += up_step;
|
|
up_step = FFMIN((int64_t)up_step*5, INT_MAX);
|
|
down_step = 1<<LAMBDA_FRAC_BITS;
|
|
}
|
|
}
|
|
//av_dlog(ctx->m.avctx, "out lambda %d\n", lambda);
|
|
ctx->lambda = lambda;
|
|
return 0;
|
|
}
|
|
|
|
static int dnxhd_find_qscale(DNXHDEncContext *ctx)
|
|
{
|
|
int bits = 0;
|
|
int up_step = 1;
|
|
int down_step = 1;
|
|
int last_higher = 0;
|
|
int last_lower = INT_MAX;
|
|
int qscale;
|
|
int x, y;
|
|
|
|
qscale = ctx->qscale;
|
|
for (;;) {
|
|
bits = 0;
|
|
ctx->qscale = qscale;
|
|
// XXX avoid recalculating bits
|
|
ctx->m.avctx->execute2(ctx->m.avctx, dnxhd_calc_bits_thread, NULL, NULL, ctx->m.mb_height);
|
|
for (y = 0; y < ctx->m.mb_height; y++) {
|
|
for (x = 0; x < ctx->m.mb_width; x++)
|
|
bits += ctx->mb_rc[qscale][y*ctx->m.mb_width+x].bits;
|
|
bits = (bits+31)&~31; // padding
|
|
if (bits > ctx->frame_bits)
|
|
break;
|
|
}
|
|
//av_dlog(ctx->m.avctx, "%d, qscale %d, bits %d, frame %d, higher %d, lower %d\n",
|
|
// ctx->m.avctx->frame_number, qscale, bits, ctx->frame_bits, last_higher, last_lower);
|
|
if (bits < ctx->frame_bits) {
|
|
if (qscale == 1)
|
|
return 1;
|
|
if (last_higher == qscale - 1) {
|
|
qscale = last_higher;
|
|
break;
|
|
}
|
|
last_lower = FFMIN(qscale, last_lower);
|
|
if (last_higher != 0)
|
|
qscale = (qscale+last_higher)>>1;
|
|
else
|
|
qscale -= down_step++;
|
|
if (qscale < 1)
|
|
qscale = 1;
|
|
up_step = 1;
|
|
} else {
|
|
if (last_lower == qscale + 1)
|
|
break;
|
|
last_higher = FFMAX(qscale, last_higher);
|
|
if (last_lower != INT_MAX)
|
|
qscale = (qscale+last_lower)>>1;
|
|
else
|
|
qscale += up_step++;
|
|
down_step = 1;
|
|
if (qscale >= ctx->m.avctx->qmax)
|
|
return -1;
|
|
}
|
|
}
|
|
//av_dlog(ctx->m.avctx, "out qscale %d\n", qscale);
|
|
ctx->qscale = qscale;
|
|
return 0;
|
|
}
|
|
|
|
#define BUCKET_BITS 8
|
|
#define RADIX_PASSES 4
|
|
#define NBUCKETS (1 << BUCKET_BITS)
|
|
|
|
static inline int get_bucket(int value, int shift)
|
|
{
|
|
value >>= shift;
|
|
value &= NBUCKETS - 1;
|
|
return NBUCKETS - 1 - value;
|
|
}
|
|
|
|
static void radix_count(const RCCMPEntry *data, int size, int buckets[RADIX_PASSES][NBUCKETS])
|
|
{
|
|
int i, j;
|
|
memset(buckets, 0, sizeof(buckets[0][0]) * RADIX_PASSES * NBUCKETS);
|
|
for (i = 0; i < size; i++) {
|
|
int v = data[i].value;
|
|
for (j = 0; j < RADIX_PASSES; j++) {
|
|
buckets[j][get_bucket(v, 0)]++;
|
|
v >>= BUCKET_BITS;
|
|
}
|
|
assert(!v);
|
|
}
|
|
for (j = 0; j < RADIX_PASSES; j++) {
|
|
int offset = size;
|
|
for (i = NBUCKETS - 1; i >= 0; i--)
|
|
buckets[j][i] = offset -= buckets[j][i];
|
|
assert(!buckets[j][0]);
|
|
}
|
|
}
|
|
|
|
static void radix_sort_pass(RCCMPEntry *dst, const RCCMPEntry *data, int size, int buckets[NBUCKETS], int pass)
|
|
{
|
|
int shift = pass * BUCKET_BITS;
|
|
int i;
|
|
for (i = 0; i < size; i++) {
|
|
int v = get_bucket(data[i].value, shift);
|
|
int pos = buckets[v]++;
|
|
dst[pos] = data[i];
|
|
}
|
|
}
|
|
|
|
static void radix_sort(RCCMPEntry *data, int size)
|
|
{
|
|
int buckets[RADIX_PASSES][NBUCKETS];
|
|
RCCMPEntry *tmp = av_malloc(sizeof(*tmp) * size);
|
|
radix_count(data, size, buckets);
|
|
radix_sort_pass(tmp, data, size, buckets[0], 0);
|
|
radix_sort_pass(data, tmp, size, buckets[1], 1);
|
|
if (buckets[2][NBUCKETS - 1] || buckets[3][NBUCKETS - 1]) {
|
|
radix_sort_pass(tmp, data, size, buckets[2], 2);
|
|
radix_sort_pass(data, tmp, size, buckets[3], 3);
|
|
}
|
|
av_free(tmp);
|
|
}
|
|
|
|
static int dnxhd_encode_fast(AVCodecContext *avctx, DNXHDEncContext *ctx)
|
|
{
|
|
int max_bits = 0;
|
|
int ret, x, y;
|
|
if ((ret = dnxhd_find_qscale(ctx)) < 0)
|
|
return -1;
|
|
for (y = 0; y < ctx->m.mb_height; y++) {
|
|
for (x = 0; x < ctx->m.mb_width; x++) {
|
|
int mb = y*ctx->m.mb_width+x;
|
|
int delta_bits;
|
|
ctx->mb_qscale[mb] = ctx->qscale;
|
|
ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale][mb].bits;
|
|
max_bits += ctx->mb_rc[ctx->qscale][mb].bits;
|
|
if (!RC_VARIANCE) {
|
|
delta_bits = ctx->mb_rc[ctx->qscale][mb].bits-ctx->mb_rc[ctx->qscale+1][mb].bits;
|
|
ctx->mb_cmp[mb].mb = mb;
|
|
ctx->mb_cmp[mb].value = delta_bits ?
|
|
((ctx->mb_rc[ctx->qscale][mb].ssd-ctx->mb_rc[ctx->qscale+1][mb].ssd)*100)/delta_bits
|
|
: INT_MIN; //avoid increasing qscale
|
|
}
|
|
}
|
|
max_bits += 31; //worst padding
|
|
}
|
|
if (!ret) {
|
|
if (RC_VARIANCE)
|
|
avctx->execute2(avctx, dnxhd_mb_var_thread, NULL, NULL, ctx->m.mb_height);
|
|
radix_sort(ctx->mb_cmp, ctx->m.mb_num);
|
|
for (x = 0; x < ctx->m.mb_num && max_bits > ctx->frame_bits; x++) {
|
|
int mb = ctx->mb_cmp[x].mb;
|
|
max_bits -= ctx->mb_rc[ctx->qscale][mb].bits - ctx->mb_rc[ctx->qscale+1][mb].bits;
|
|
ctx->mb_qscale[mb] = ctx->qscale+1;
|
|
ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale+1][mb].bits;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void dnxhd_load_picture(DNXHDEncContext *ctx, const AVFrame *frame)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
ctx->frame.data[i] = frame->data[i];
|
|
ctx->frame.linesize[i] = frame->linesize[i];
|
|
}
|
|
|
|
for (i = 0; i < ctx->m.avctx->thread_count; i++) {
|
|
ctx->thread[i]->m.linesize = ctx->frame.linesize[0]<<ctx->interlaced;
|
|
ctx->thread[i]->m.uvlinesize = ctx->frame.linesize[1]<<ctx->interlaced;
|
|
ctx->thread[i]->dct_y_offset = ctx->m.linesize *8;
|
|
ctx->thread[i]->dct_uv_offset = ctx->m.uvlinesize*8;
|
|
}
|
|
|
|
ctx->frame.interlaced_frame = frame->interlaced_frame;
|
|
ctx->cur_field = frame->interlaced_frame && !frame->top_field_first;
|
|
}
|
|
|
|
static int dnxhd_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data)
|
|
{
|
|
DNXHDEncContext *ctx = avctx->priv_data;
|
|
int first_field = 1;
|
|
int offset, i, ret;
|
|
|
|
if (buf_size < ctx->cid_table->frame_size) {
|
|
av_log(avctx, AV_LOG_ERROR, "output buffer is too small to compress picture\n");
|
|
return -1;
|
|
}
|
|
|
|
dnxhd_load_picture(ctx, data);
|
|
|
|
encode_coding_unit:
|
|
for (i = 0; i < 3; i++) {
|
|
ctx->src[i] = ctx->frame.data[i];
|
|
if (ctx->interlaced && ctx->cur_field)
|
|
ctx->src[i] += ctx->frame.linesize[i];
|
|
}
|
|
|
|
dnxhd_write_header(avctx, buf);
|
|
|
|
if (avctx->mb_decision == FF_MB_DECISION_RD)
|
|
ret = dnxhd_encode_rdo(avctx, ctx);
|
|
else
|
|
ret = dnxhd_encode_fast(avctx, ctx);
|
|
if (ret < 0) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"picture could not fit ratecontrol constraints, increase qmax\n");
|
|
return -1;
|
|
}
|
|
|
|
dnxhd_setup_threads_slices(ctx);
|
|
|
|
offset = 0;
|
|
for (i = 0; i < ctx->m.mb_height; i++) {
|
|
AV_WB32(ctx->msip + i * 4, offset);
|
|
offset += ctx->slice_size[i];
|
|
assert(!(ctx->slice_size[i] & 3));
|
|
}
|
|
|
|
avctx->execute2(avctx, dnxhd_encode_thread, buf, NULL, ctx->m.mb_height);
|
|
|
|
assert(640 + offset + 4 <= ctx->cid_table->coding_unit_size);
|
|
memset(buf + 640 + offset, 0, ctx->cid_table->coding_unit_size - 4 - offset - 640);
|
|
|
|
AV_WB32(buf + ctx->cid_table->coding_unit_size - 4, 0x600DC0DE); // EOF
|
|
|
|
if (ctx->interlaced && first_field) {
|
|
first_field = 0;
|
|
ctx->cur_field ^= 1;
|
|
buf += ctx->cid_table->coding_unit_size;
|
|
buf_size -= ctx->cid_table->coding_unit_size;
|
|
goto encode_coding_unit;
|
|
}
|
|
|
|
ctx->frame.quality = ctx->qscale*FF_QP2LAMBDA;
|
|
|
|
return ctx->cid_table->frame_size;
|
|
}
|
|
|
|
static int dnxhd_encode_end(AVCodecContext *avctx)
|
|
{
|
|
DNXHDEncContext *ctx = avctx->priv_data;
|
|
int max_level = 1<<(ctx->cid_table->bit_depth+2);
|
|
int i;
|
|
|
|
av_free(ctx->vlc_codes-max_level*2);
|
|
av_free(ctx->vlc_bits -max_level*2);
|
|
av_freep(&ctx->run_codes);
|
|
av_freep(&ctx->run_bits);
|
|
|
|
av_freep(&ctx->mb_bits);
|
|
av_freep(&ctx->mb_qscale);
|
|
av_freep(&ctx->mb_rc);
|
|
av_freep(&ctx->mb_cmp);
|
|
av_freep(&ctx->slice_size);
|
|
av_freep(&ctx->slice_offs);
|
|
|
|
av_freep(&ctx->qmatrix_c);
|
|
av_freep(&ctx->qmatrix_l);
|
|
av_freep(&ctx->qmatrix_c16);
|
|
av_freep(&ctx->qmatrix_l16);
|
|
|
|
for (i = 1; i < avctx->thread_count; i++)
|
|
av_freep(&ctx->thread[i]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_dnxhd_encoder = {
|
|
"dnxhd",
|
|
AVMEDIA_TYPE_VIDEO,
|
|
CODEC_ID_DNXHD,
|
|
sizeof(DNXHDEncContext),
|
|
dnxhd_encode_init,
|
|
dnxhd_encode_picture,
|
|
dnxhd_encode_end,
|
|
.pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV422P, PIX_FMT_NONE},
|
|
.long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
|
|
};
|