forked from KolibriOS/kolibrios
1054 lines
37 KiB
C
1054 lines
37 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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* Copyright (c) 2011 MirriAd Ltd
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*
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* VC-3 encoder funded by the British Broadcasting Corporation
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* 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>
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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 RC_VARIANCE 1 // use variance or ssd for fast rc
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#include "libavutil/attributes.h"
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#include "libavutil/internal.h"
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#include "libavutil/opt.h"
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#include "avcodec.h"
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#include "dsputil.h"
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#include "internal.h"
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#include "mpegvideo.h"
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#include "dnxhdenc.h"
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#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
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#define DNX10BIT_QMAT_SHIFT 18 // The largest value that will not lead to overflow for 10bit samples.
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static const AVOption options[]={
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{"nitris_compat", "encode with Avid Nitris compatibility", offsetof(DNXHDEncContext, nitris_compat), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, VE},
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{NULL}
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};
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static const AVClass dnxhd_class = {
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.class_name = "dnxhd",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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#define LAMBDA_FRAC_BITS 10
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static void dnxhd_8bit_get_pixels_8x4_sym(int16_t *av_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 av_always_inline void dnxhd_10bit_get_pixels_8x4_sym(int16_t *av_restrict block, const uint8_t *pixels, int line_size)
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{
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int i;
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const uint16_t* pixels16 = (const uint16_t*)pixels;
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line_size >>= 1;
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for (i = 0; i < 4; i++) {
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block[0] = pixels16[0]; block[1] = pixels16[1];
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block[2] = pixels16[2]; block[3] = pixels16[3];
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block[4] = pixels16[4]; block[5] = pixels16[5];
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block[6] = pixels16[6]; block[7] = pixels16[7];
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pixels16 += 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_10bit_dct_quantize(MpegEncContext *ctx, int16_t *block,
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int n, int qscale, int *overflow)
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{
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const uint8_t *scantable= ctx->intra_scantable.scantable;
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const int *qmat = n<4 ? ctx->q_intra_matrix[qscale] : ctx->q_chroma_intra_matrix[qscale];
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int last_non_zero = 0;
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int i;
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ctx->dsp.fdct(block);
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// Divide by 4 with rounding, to compensate scaling of DCT coefficients
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block[0] = (block[0] + 2) >> 2;
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for (i = 1; i < 64; ++i) {
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int j = scantable[i];
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int sign = block[j] >> 31;
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int level = (block[j] ^ sign) - sign;
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level = level * qmat[j] >> DNX10BIT_QMAT_SHIFT;
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block[j] = (level ^ sign) - sign;
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if (level)
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last_non_zero = i;
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}
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return last_non_zero;
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}
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static av_cold 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] >> 1 == alevel &&
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(!offset || (ctx->cid_table->ac_flags[j] & 1) && offset) &&
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(!run || (ctx->cid_table->ac_flags[j] & 2) && run)) {
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av_assert1(!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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av_assert0(!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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av_assert0(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 av_cold 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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const uint8_t *luma_weight_table = ctx->cid_table->luma_weight;
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const uint8_t *chroma_weight_table = ctx->cid_table->chroma_weight;
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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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if (ctx->cid_table->bit_depth == 8) {
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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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} else {
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// 10-bit
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for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) {
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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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// The quantization formula from the VC-3 standard is:
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// quantized = sign(block[i]) * floor(abs(block[i]/s) * p / (qscale * weight_table[i]))
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// Where p is 32 for 8-bit samples and 8 for 10-bit ones.
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// The s factor compensates scaling of DCT coefficients done by the DCT routines,
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// and therefore is not present in standard. It's 8 for 8-bit samples and 4 for 10-bit ones.
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// We want values of ctx->qtmatrix_l and ctx->qtmatrix_r to be:
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// ((1 << DNX10BIT_QMAT_SHIFT) * (p / s)) / (qscale * weight_table[i])
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// For 10-bit samples, p / s == 2
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ctx->qmatrix_l[qscale][j] = (1 << (DNX10BIT_QMAT_SHIFT + 1)) / (qscale * luma_weight_table[i]);
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ctx->qmatrix_c[qscale][j] = (1 << (DNX10BIT_QMAT_SHIFT + 1)) / (qscale * chroma_weight_table[i]);
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}
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}
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}
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ctx->m.q_chroma_intra_matrix16 = ctx->qmatrix_c16;
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ctx->m.q_chroma_intra_matrix = ctx->qmatrix_c;
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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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fail:
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return -1;
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}
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static av_cold 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 - ctx->min_padding) * 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 av_cold 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, bit_depth;
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switch (avctx->pix_fmt) {
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case AV_PIX_FMT_YUV422P:
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bit_depth = 8;
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break;
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case AV_PIX_FMT_YUV422P10:
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bit_depth = 10;
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break;
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default:
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av_log(avctx, AV_LOG_ERROR, "pixel format is incompatible with DNxHD\n");
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return -1;
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}
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ctx->cid = ff_dnxhd_find_cid(avctx, bit_depth);
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if (!ctx->cid) {
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av_log(avctx, AV_LOG_ERROR, "video parameters incompatible with DNxHD. Valid DNxHD profiles:\n");
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ff_dnxhd_print_profiles(avctx, AV_LOG_ERROR);
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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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av_assert0(index >= 0);
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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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avctx->bits_per_raw_sample = ctx->cid_table->bit_depth;
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ff_dct_common_init(&ctx->m);
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ff_dct_encode_init(&ctx->m);
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if (!ctx->m.dct_quantize)
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ctx->m.dct_quantize = ff_dct_quantize_c;
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if (ctx->cid_table->bit_depth == 10) {
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ctx->m.dct_quantize = dnxhd_10bit_dct_quantize;
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ctx->get_pixels_8x4_sym = dnxhd_10bit_get_pixels_8x4_sym;
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ctx->block_width_l2 = 4;
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} else {
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ctx->get_pixels_8x4_sym = dnxhd_8bit_get_pixels_8x4_sym;
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ctx->block_width_l2 = 3;
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}
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if (ARCH_X86)
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ff_dnxhdenc_init_x86(ctx);
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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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// Avid Nitris hardware decoder requires a minimum amount of padding in the coding unit payload
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if (ctx->nitris_compat)
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ctx->min_padding = 1600;
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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 = AV_PICTURE_TYPE_I;
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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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static 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] = ctx->cid_table->bit_depth == 10 ? 0x58 : 0x38;
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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, int16_t *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]);
|
|
ctx->m.last_dc[n] = block[0];
|
|
|
|
for (i = 1; i <= last_index; i++) {
|
|
j = ctx->m.intra_scantable.permutated[i];
|
|
slevel = block[j];
|
|
if (slevel) {
|
|
int run_level = i - last_non_zero - 1;
|
|
int rlevel = (slevel<<1)|!!run_level;
|
|
put_bits(&ctx->m.pb, ctx->vlc_bits[rlevel], ctx->vlc_codes[rlevel]);
|
|
if (run_level)
|
|
put_bits(&ctx->m.pb, ctx->run_bits[run_level], ctx->run_codes[run_level]);
|
|
last_non_zero = i;
|
|
}
|
|
}
|
|
put_bits(&ctx->m.pb, ctx->vlc_bits[0], ctx->vlc_codes[0]); // EOB
|
|
}
|
|
|
|
static av_always_inline void dnxhd_unquantize_c(DNXHDEncContext *ctx, int16_t *block, int n, int qscale, int last_index)
|
|
{
|
|
const uint8_t *weight_matrix;
|
|
int level;
|
|
int i;
|
|
|
|
weight_matrix = (n&2) ? ctx->cid_table->chroma_weight : ctx->cid_table->luma_weight;
|
|
|
|
for (i = 1; i <= last_index; i++) {
|
|
int j = ctx->m.intra_scantable.permutated[i];
|
|
level = block[j];
|
|
if (level) {
|
|
if (level < 0) {
|
|
level = (1-2*level) * qscale * weight_matrix[i];
|
|
if (ctx->cid_table->bit_depth == 10) {
|
|
if (weight_matrix[i] != 8)
|
|
level += 8;
|
|
level >>= 4;
|
|
} else {
|
|
if (weight_matrix[i] != 32)
|
|
level += 32;
|
|
level >>= 6;
|
|
}
|
|
level = -level;
|
|
} else {
|
|
level = (2*level+1) * qscale * weight_matrix[i];
|
|
if (ctx->cid_table->bit_depth == 10) {
|
|
if (weight_matrix[i] != 8)
|
|
level += 8;
|
|
level >>= 4;
|
|
} else {
|
|
if (weight_matrix[i] != 32)
|
|
level += 32;
|
|
level >>= 6;
|
|
}
|
|
}
|
|
block[j] = level;
|
|
}
|
|
}
|
|
}
|
|
|
|
static av_always_inline int dnxhd_ssd_block(int16_t *qblock, int16_t *block)
|
|
{
|
|
int score = 0;
|
|
int i;
|
|
for (i = 0; i < 64; i++)
|
|
score += (block[i] - qblock[i]) * (block[i] - qblock[i]);
|
|
return score;
|
|
}
|
|
|
|
static av_always_inline int dnxhd_calc_ac_bits(DNXHDEncContext *ctx, int16_t *block, int last_index)
|
|
{
|
|
int last_non_zero = 0;
|
|
int bits = 0;
|
|
int i, j, level;
|
|
for (i = 1; i <= last_index; i++) {
|
|
j = ctx->m.intra_scantable.permutated[i];
|
|
level = block[j];
|
|
if (level) {
|
|
int run_level = i - last_non_zero - 1;
|
|
bits += ctx->vlc_bits[(level<<1)|!!run_level]+ctx->run_bits[run_level];
|
|
last_non_zero = i;
|
|
}
|
|
}
|
|
return bits;
|
|
}
|
|
|
|
static av_always_inline void dnxhd_get_blocks(DNXHDEncContext *ctx, int mb_x, int mb_y)
|
|
{
|
|
const int bs = ctx->block_width_l2;
|
|
const int bw = 1 << bs;
|
|
const uint8_t *ptr_y = ctx->thread[0]->src[0] + ((mb_y << 4) * ctx->m.linesize) + (mb_x << bs+1);
|
|
const uint8_t *ptr_u = ctx->thread[0]->src[1] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs);
|
|
const uint8_t *ptr_v = ctx->thread[0]->src[2] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs);
|
|
DSPContext *dsp = &ctx->m.dsp;
|
|
|
|
dsp->get_pixels(ctx->blocks[0], ptr_y, ctx->m.linesize);
|
|
dsp->get_pixels(ctx->blocks[1], ptr_y + bw, ctx->m.linesize);
|
|
dsp->get_pixels(ctx->blocks[2], ptr_u, ctx->m.uvlinesize);
|
|
dsp->get_pixels(ctx->blocks[3], ptr_v, ctx->m.uvlinesize);
|
|
|
|
if (mb_y+1 == ctx->m.mb_height && ctx->m.avctx->height == 1080) {
|
|
if (ctx->interlaced) {
|
|
ctx->get_pixels_8x4_sym(ctx->blocks[4], ptr_y + ctx->dct_y_offset, ctx->m.linesize);
|
|
ctx->get_pixels_8x4_sym(ctx->blocks[5], ptr_y + ctx->dct_y_offset + bw, ctx->m.linesize);
|
|
ctx->get_pixels_8x4_sym(ctx->blocks[6], ptr_u + ctx->dct_uv_offset, ctx->m.uvlinesize);
|
|
ctx->get_pixels_8x4_sym(ctx->blocks[7], ptr_v + ctx->dct_uv_offset, ctx->m.uvlinesize);
|
|
} else {
|
|
dsp->clear_block(ctx->blocks[4]);
|
|
dsp->clear_block(ctx->blocks[5]);
|
|
dsp->clear_block(ctx->blocks[6]);
|
|
dsp->clear_block(ctx->blocks[7]);
|
|
}
|
|
} else {
|
|
dsp->get_pixels(ctx->blocks[4], ptr_y + ctx->dct_y_offset, ctx->m.linesize);
|
|
dsp->get_pixels(ctx->blocks[5], ptr_y + ctx->dct_y_offset + bw, ctx->m.linesize);
|
|
dsp->get_pixels(ctx->blocks[6], ptr_u + ctx->dct_uv_offset, ctx->m.uvlinesize);
|
|
dsp->get_pixels(ctx->blocks[7], ptr_v + ctx->dct_uv_offset, ctx->m.uvlinesize);
|
|
}
|
|
}
|
|
|
|
static av_always_inline int dnxhd_switch_matrix(DNXHDEncContext *ctx, int i)
|
|
{
|
|
const static uint8_t component[8]={0,0,1,2,0,0,1,2};
|
|
return component[i];
|
|
}
|
|
|
|
static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
|
|
{
|
|
DNXHDEncContext *ctx = avctx->priv_data;
|
|
int mb_y = jobnr, mb_x;
|
|
int qscale = ctx->qscale;
|
|
LOCAL_ALIGNED_16(int16_t, block, [64]);
|
|
ctx = ctx->thread[threadnr];
|
|
|
|
ctx->m.last_dc[0] =
|
|
ctx->m.last_dc[1] =
|
|
ctx->m.last_dc[2] = 1 << (ctx->cid_table->bit_depth + 2);
|
|
|
|
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++) {
|
|
int16_t *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(&ctx->m, block, 4&(2*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);
|
|
|
|
av_assert1(nbits < ctx->cid_table->bit_depth + 4);
|
|
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] = 1 << (ctx->cid_table->bit_depth + 2);
|
|
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++) {
|
|
int16_t *block = ctx->blocks[i];
|
|
int overflow, n = dnxhd_switch_matrix(ctx, i);
|
|
int last_index = ctx->m.dct_quantize(&ctx->m, block, 4&(2*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, x, y;
|
|
int partial_last_row = (mb_y == ctx->m.mb_height - 1) &&
|
|
((avctx->height >> ctx->interlaced) & 0xF);
|
|
|
|
ctx = ctx->thread[threadnr];
|
|
if (ctx->cid_table->bit_depth == 8) {
|
|
uint8_t *pix = ctx->thread[0]->src[0] + ((mb_y<<4) * ctx->m.linesize);
|
|
for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x, pix += 16) {
|
|
unsigned mb = mb_y * ctx->m.mb_width + mb_x;
|
|
int sum;
|
|
int varc;
|
|
|
|
if (!partial_last_row && mb_x * 16 <= avctx->width - 16) {
|
|
sum = ctx->m.dsp.pix_sum(pix, ctx->m.linesize);
|
|
varc = ctx->m.dsp.pix_norm1(pix, ctx->m.linesize);
|
|
} else {
|
|
int bw = FFMIN(avctx->width - 16 * mb_x, 16);
|
|
int bh = FFMIN((avctx->height >> ctx->interlaced) - 16 * mb_y, 16);
|
|
sum = varc = 0;
|
|
for (y = 0; y < bh; y++) {
|
|
for (x = 0; x < bw; x++) {
|
|
uint8_t val = pix[x + y * ctx->m.linesize];
|
|
sum += val;
|
|
varc += val * val;
|
|
}
|
|
}
|
|
}
|
|
varc = (varc - (((unsigned)sum * sum) >> 8) + 128) >> 8;
|
|
|
|
ctx->mb_cmp[mb].value = varc;
|
|
ctx->mb_cmp[mb].mb = mb;
|
|
}
|
|
} else { // 10-bit
|
|
int const linesize = ctx->m.linesize >> 1;
|
|
for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x) {
|
|
uint16_t *pix = (uint16_t*)ctx->thread[0]->src[0] + ((mb_y << 4) * linesize) + (mb_x << 4);
|
|
unsigned mb = mb_y * ctx->m.mb_width + mb_x;
|
|
int sum = 0;
|
|
int sqsum = 0;
|
|
int mean, sqmean;
|
|
int i, j;
|
|
// Macroblocks are 16x16 pixels, unlike DCT blocks which are 8x8.
|
|
for (i = 0; i < 16; ++i) {
|
|
for (j = 0; j < 16; ++j) {
|
|
// Turn 16-bit pixels into 10-bit ones.
|
|
int const sample = (unsigned)pix[j] >> 6;
|
|
sum += sample;
|
|
sqsum += sample * sample;
|
|
// 2^10 * 2^10 * 16 * 16 = 2^28, which is less than INT_MAX
|
|
}
|
|
pix += linesize;
|
|
}
|
|
mean = sum >> 8; // 16*16 == 2^8
|
|
sqmean = sqsum >> 8;
|
|
ctx->mb_cmp[mb].value = sqmean - mean * mean;
|
|
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+
|
|
((unsigned)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 = FFMIN((int64_t)down_step*5, INT_MAX);
|
|
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)
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static inline int get_bucket(int value, int shift)
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{
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value >>= shift;
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value &= NBUCKETS - 1;
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return NBUCKETS - 1 - value;
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}
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static void radix_count(const RCCMPEntry *data, int size, int buckets[RADIX_PASSES][NBUCKETS])
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{
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int i, j;
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memset(buckets, 0, sizeof(buckets[0][0]) * RADIX_PASSES * NBUCKETS);
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for (i = 0; i < size; i++) {
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int v = data[i].value;
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for (j = 0; j < RADIX_PASSES; j++) {
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buckets[j][get_bucket(v, 0)]++;
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v >>= BUCKET_BITS;
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}
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av_assert1(!v);
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}
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for (j = 0; j < RADIX_PASSES; j++) {
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int offset = size;
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for (i = NBUCKETS - 1; i >= 0; i--)
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buckets[j][i] = offset -= buckets[j][i];
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av_assert1(!buckets[j][0]);
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}
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}
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static void radix_sort_pass(RCCMPEntry *dst, const RCCMPEntry *data, int size, int buckets[NBUCKETS], int pass)
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{
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int shift = pass * BUCKET_BITS;
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int i;
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for (i = 0; i < size; i++) {
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int v = get_bucket(data[i].value, shift);
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int pos = buckets[v]++;
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dst[pos] = data[i];
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}
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}
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static void radix_sort(RCCMPEntry *data, int size)
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{
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int buckets[RADIX_PASSES][NBUCKETS];
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RCCMPEntry *tmp = av_malloc(sizeof(*tmp) * size);
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radix_count(data, size, buckets);
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radix_sort_pass(tmp, data, size, buckets[0], 0);
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radix_sort_pass(data, tmp, size, buckets[1], 1);
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if (buckets[2][NBUCKETS - 1] || buckets[3][NBUCKETS - 1]) {
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radix_sort_pass(tmp, data, size, buckets[2], 2);
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radix_sort_pass(data, tmp, size, buckets[3], 3);
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}
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av_free(tmp);
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}
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static int dnxhd_encode_fast(AVCodecContext *avctx, DNXHDEncContext *ctx)
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{
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int max_bits = 0;
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int ret, x, y;
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if ((ret = dnxhd_find_qscale(ctx)) < 0)
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return -1;
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for (y = 0; y < ctx->m.mb_height; y++) {
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for (x = 0; x < ctx->m.mb_width; x++) {
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int mb = y*ctx->m.mb_width+x;
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int delta_bits;
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ctx->mb_qscale[mb] = ctx->qscale;
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ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale][mb].bits;
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max_bits += ctx->mb_rc[ctx->qscale][mb].bits;
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if (!RC_VARIANCE) {
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delta_bits = ctx->mb_rc[ctx->qscale][mb].bits-ctx->mb_rc[ctx->qscale+1][mb].bits;
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ctx->mb_cmp[mb].mb = mb;
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ctx->mb_cmp[mb].value = delta_bits ?
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((ctx->mb_rc[ctx->qscale][mb].ssd-ctx->mb_rc[ctx->qscale+1][mb].ssd)*100)/delta_bits
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: INT_MIN; //avoid increasing qscale
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}
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}
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max_bits += 31; //worst padding
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}
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if (!ret) {
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if (RC_VARIANCE)
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avctx->execute2(avctx, dnxhd_mb_var_thread, NULL, NULL, ctx->m.mb_height);
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radix_sort(ctx->mb_cmp, ctx->m.mb_num);
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for (x = 0; x < ctx->m.mb_num && max_bits > ctx->frame_bits; x++) {
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int mb = ctx->mb_cmp[x].mb;
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max_bits -= ctx->mb_rc[ctx->qscale][mb].bits - ctx->mb_rc[ctx->qscale+1][mb].bits;
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ctx->mb_qscale[mb] = ctx->qscale+1;
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ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale+1][mb].bits;
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}
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}
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return 0;
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}
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static void dnxhd_load_picture(DNXHDEncContext *ctx, const AVFrame *frame)
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{
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int i;
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for (i = 0; i < 3; i++) {
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ctx->frame.data[i] = frame->data[i];
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ctx->frame.linesize[i] = frame->linesize[i];
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}
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for (i = 0; i < ctx->m.avctx->thread_count; i++) {
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ctx->thread[i]->m.linesize = ctx->frame.linesize[0]<<ctx->interlaced;
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ctx->thread[i]->m.uvlinesize = ctx->frame.linesize[1]<<ctx->interlaced;
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ctx->thread[i]->dct_y_offset = ctx->m.linesize *8;
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ctx->thread[i]->dct_uv_offset = ctx->m.uvlinesize*8;
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}
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ctx->frame.interlaced_frame = frame->interlaced_frame;
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ctx->cur_field = frame->interlaced_frame && !frame->top_field_first;
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}
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static int dnxhd_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
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const AVFrame *frame, int *got_packet)
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{
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DNXHDEncContext *ctx = avctx->priv_data;
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int first_field = 1;
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int offset, i, ret;
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uint8_t *buf;
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if ((ret = ff_alloc_packet2(avctx, pkt, ctx->cid_table->frame_size)) < 0)
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return ret;
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buf = pkt->data;
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dnxhd_load_picture(ctx, frame);
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encode_coding_unit:
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for (i = 0; i < 3; i++) {
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ctx->src[i] = ctx->frame.data[i];
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if (ctx->interlaced && ctx->cur_field)
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ctx->src[i] += ctx->frame.linesize[i];
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}
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dnxhd_write_header(avctx, buf);
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if (avctx->mb_decision == FF_MB_DECISION_RD)
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ret = dnxhd_encode_rdo(avctx, ctx);
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else
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ret = dnxhd_encode_fast(avctx, ctx);
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR,
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"picture could not fit ratecontrol constraints, increase qmax\n");
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return -1;
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}
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dnxhd_setup_threads_slices(ctx);
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offset = 0;
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for (i = 0; i < ctx->m.mb_height; i++) {
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AV_WB32(ctx->msip + i * 4, offset);
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offset += ctx->slice_size[i];
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av_assert1(!(ctx->slice_size[i] & 3));
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}
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avctx->execute2(avctx, dnxhd_encode_thread, buf, NULL, ctx->m.mb_height);
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av_assert1(640 + offset + 4 <= ctx->cid_table->coding_unit_size);
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memset(buf + 640 + offset, 0, ctx->cid_table->coding_unit_size - 4 - offset - 640);
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AV_WB32(buf + ctx->cid_table->coding_unit_size - 4, 0x600DC0DE); // EOF
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if (ctx->interlaced && first_field) {
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first_field = 0;
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ctx->cur_field ^= 1;
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buf += ctx->cid_table->coding_unit_size;
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goto encode_coding_unit;
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}
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ctx->frame.quality = ctx->qscale*FF_QP2LAMBDA;
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|
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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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|
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static av_cold int dnxhd_encode_end(AVCodecContext *avctx)
|
|
{
|
|
DNXHDEncContext *ctx = avctx->priv_data;
|
|
int max_level = 1<<(ctx->cid_table->bit_depth+2);
|
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int i;
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|
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av_free(ctx->vlc_codes-max_level*2);
|
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av_free(ctx->vlc_bits -max_level*2);
|
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av_freep(&ctx->run_codes);
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av_freep(&ctx->run_bits);
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|
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av_freep(&ctx->mb_bits);
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av_freep(&ctx->mb_qscale);
|
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av_freep(&ctx->mb_rc);
|
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av_freep(&ctx->mb_cmp);
|
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av_freep(&ctx->slice_size);
|
|
av_freep(&ctx->slice_offs);
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|
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av_freep(&ctx->qmatrix_c);
|
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av_freep(&ctx->qmatrix_l);
|
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av_freep(&ctx->qmatrix_c16);
|
|
av_freep(&ctx->qmatrix_l16);
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|
|
for (i = 1; i < avctx->thread_count; i++)
|
|
av_freep(&ctx->thread[i]);
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|
|
return 0;
|
|
}
|
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|
|
static const AVCodecDefault dnxhd_defaults[] = {
|
|
{ "qmax", "1024" }, /* Maximum quantization scale factor allowed for VC-3 */
|
|
{ NULL },
|
|
};
|
|
|
|
AVCodec ff_dnxhd_encoder = {
|
|
.name = "dnxhd",
|
|
.long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_DNXHD,
|
|
.priv_data_size = sizeof(DNXHDEncContext),
|
|
.init = dnxhd_encode_init,
|
|
.encode2 = dnxhd_encode_picture,
|
|
.close = dnxhd_encode_end,
|
|
.capabilities = CODEC_CAP_SLICE_THREADS,
|
|
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV422P,
|
|
AV_PIX_FMT_YUV422P10,
|
|
AV_PIX_FMT_NONE },
|
|
.priv_class = &dnxhd_class,
|
|
.defaults = dnxhd_defaults,
|
|
};
|