mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 10682 to svn://svn.ffmpeg.org/ffmpeg/trunkpull/126/head
Baptiste Coudurier
17 years ago
parent
69cea75f6b
commit
fc4cbc1699
8 changed files with 906 additions and 5 deletions
@ -0,0 +1,845 @@ |
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/*
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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 "dnxhddata.h" |
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typedef struct { |
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uint16_t mb; |
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int value; |
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} RCCMPEntry; |
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typedef struct { |
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int ssd; |
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int bits; |
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} RCEntry; |
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int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow); |
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typedef struct DNXHDEncContext { |
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MpegEncContext m; ///< Used for quantization dsp functions
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AVFrame frame; |
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int cid; |
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const CIDEntry *cid_table; |
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uint8_t *msip; ///< Macroblock Scan Indices Payload
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uint32_t *slice_size; |
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struct DNXHDEncContext *thread[MAX_THREADS]; |
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unsigned dct_y_offset; |
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unsigned dct_uv_offset; |
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int interlaced; |
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int cur_field; |
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DECLARE_ALIGNED_16(DCTELEM, blocks[8][64]); |
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int (*qmatrix_c) [64]; |
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int (*qmatrix_l) [64]; |
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uint16_t (*qmatrix_l16)[2][64]; |
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uint16_t (*qmatrix_c16)[2][64]; |
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unsigned frame_bits; |
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uint8_t *src[3]; |
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uint16_t *table_vlc_codes; |
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uint8_t *table_vlc_bits; |
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uint16_t *table_run_codes; |
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uint8_t *table_run_bits; |
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/** Rate control */ |
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unsigned slice_bits; |
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unsigned qscale; |
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unsigned lambda; |
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unsigned thread_size; |
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uint16_t *mb_bits; |
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uint8_t *mb_qscale; |
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RCCMPEntry *mb_cmp; |
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RCEntry (*mb_rc)[8160]; |
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} DNXHDEncContext; |
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#define LAMBDA_FRAC_BITS 10 |
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static int dnxhd_init_vlc(DNXHDEncContext *ctx) |
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{ |
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int i; |
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CHECKED_ALLOCZ(ctx->table_vlc_codes, 449*2); |
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CHECKED_ALLOCZ(ctx->table_vlc_bits, 449); |
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CHECKED_ALLOCZ(ctx->table_run_codes, 63*2); |
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CHECKED_ALLOCZ(ctx->table_run_bits, 63); |
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for (i = 0; i < 257; i++) { |
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int level = ctx->cid_table->ac_level[i] + |
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(ctx->cid_table->ac_run_flag[i] << 7) + (ctx->cid_table->ac_index_flag[i] << 8); |
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assert(level < 449); |
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if (ctx->cid_table->ac_level[i] == 64 && ctx->cid_table->ac_index_flag[i]) |
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level -= 64; // use 0+(1<<8) level
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ctx->table_vlc_codes[level] = ctx->cid_table->ac_codes[i]; |
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ctx->table_vlc_bits [level] = ctx->cid_table->ac_bits[i]; |
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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->table_run_codes[run] = ctx->cid_table->run_codes[i]; |
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ctx->table_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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CHECKED_ALLOCZ(ctx->qmatrix_l, (ctx->m.avctx->qmax+1) * 64 * sizeof(int)); |
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CHECKED_ALLOCZ(ctx->qmatrix_c, (ctx->m.avctx->qmax+1) * 64 * sizeof(int)); |
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CHECKED_ALLOCZ(ctx->qmatrix_l16, (ctx->m.avctx->qmax+1) * 64 * 2 * sizeof(uint16_t)); |
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CHECKED_ALLOCZ(ctx->qmatrix_c16, (ctx->m.avctx->qmax+1) * 64 * 2 * sizeof(uint16_t)); |
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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_weigth[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_weigth[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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CHECKED_ALLOCZ(ctx->mb_rc, 8160*ctx->m.avctx->qmax*sizeof(RCEntry)); |
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if (ctx->m.avctx->mb_decision != FF_MB_DECISION_RD) |
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CHECKED_ALLOCZ(ctx->mb_cmp, ctx->m.mb_num*sizeof(RCCMPEntry)); |
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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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if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) { |
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if (avctx->bit_rate == 120000000) |
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ctx->cid = 1242; |
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else if (avctx->bit_rate == 185000000) |
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ctx->cid = 1243; |
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} else { |
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if (avctx->bit_rate == 120000000) |
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ctx->cid = 1237; |
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else if (avctx->bit_rate == 185000000) |
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ctx->cid = 1238; |
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} |
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if (!ctx->cid || avctx->width != 1920 || avctx->height != 1080 || 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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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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dsputil_init(&ctx->m.dsp, avctx); |
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ff_dct_common_init(&ctx->m); |
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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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CHECKED_ALLOCZ(ctx->slice_size, ctx->m.mb_height*sizeof(uint32_t)); |
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CHECKED_ALLOCZ(ctx->mb_bits, ctx->m.mb_num *sizeof(uint16_t)); |
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CHECKED_ALLOCZ(ctx->mb_qscale, ctx->m.mb_num *sizeof(uint8_t)); |
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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 || (avctx->thread_count > ctx->m.mb_height)) { |
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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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for (i = 0; i < avctx->thread_count; i++) { |
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ctx->thread[i]->m.start_mb_y = (ctx->m.mb_height*(i ) + avctx->thread_count/2) / avctx->thread_count; |
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ctx->thread[i]->m.end_mb_y = (ctx->m.mb_height*(i+1) + avctx->thread_count/2) / avctx->thread_count; |
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} |
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return 0; |
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fail: //for CHECKED_ALLOCZ
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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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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); // ALPF
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AV_WB16(buf + 0x1a, avctx->width); // SPL
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AV_WB16(buf + 0x1d, avctx->height); // NAL
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buf[0x21] = 0x38; // FIXME 8 bit per comp
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buf[0x22] = 0x88 + (ctx->frame.interlaced_frame<<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 offset = 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 sign; |
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MASK_ABS(sign, slevel); |
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if (slevel > 64) { |
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offset = (slevel-1) >> 6; |
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slevel = 256 | (slevel & 63); // level 64 is treated as 0
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} |
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if (run_level) |
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slevel |= 128; |
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put_bits(&ctx->m.pb, ctx->table_vlc_bits[slevel]+1, (ctx->table_vlc_codes[slevel]<<1)|(sign&1)); |
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if (offset) { |
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put_bits(&ctx->m.pb, 4, offset); |
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offset = 0; |
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} |
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if (run_level) |
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put_bits(&ctx->m.pb, ctx->table_run_bits[run_level], ctx->table_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->table_vlc_bits[0], ctx->table_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 *weigth_matrix; |
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int level; |
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int i; |
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weigth_matrix = (n&2) ? ctx->cid_table->chroma_weigth : ctx->cid_table->luma_weigth; |
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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 * weigth_matrix[i]; |
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if (weigth_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 * weigth_matrix[i]; |
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if (weigth_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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level = FFABS(level); |
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if (level > 64) { |
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level = 256 | (level & 63); // level 64 is treated as 0
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bits += 4; |
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} |
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level |= (!!run_level)<<7; |
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bits += ctx->table_vlc_bits[level]+1 + ctx->table_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_pixels_4x8(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]; |
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block[1] = pixels[1]; |
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block[2] = pixels[2]; |
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block[3] = pixels[3]; |
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block[4] = pixels[4]; |
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block[5] = pixels[5]; |
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block[6] = pixels[6]; |
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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_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) { |
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if (ctx->interlaced) { |
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dnxhd_get_pixels_4x8(ctx->blocks[4], ptr_y + ctx->dct_y_offset , ctx->m.linesize); |
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dnxhd_get_pixels_4x8(ctx->blocks[5], ptr_y + ctx->dct_y_offset + 8, ctx->m.linesize); |
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dnxhd_get_pixels_4x8(ctx->blocks[6], ptr_u + ctx->dct_uv_offset , ctx->m.uvlinesize); |
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dnxhd_get_pixels_4x8(ctx->blocks[7], ptr_v + ctx->dct_uv_offset , ctx->m.uvlinesize); |
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} else |
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memset(ctx->blocks[4], 0, 4*64*sizeof(DCTELEM)); |
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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); |
||||
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) |
||||
{ |
||||
if (i&2) { |
||||
ctx->m.q_intra_matrix16 = ctx->qmatrix_c16; |
||||
ctx->m.q_intra_matrix = ctx->qmatrix_c; |
||||
return 1 + (i&1); |
||||
} else { |
||||
ctx->m.q_intra_matrix16 = ctx->qmatrix_l16; |
||||
ctx->m.q_intra_matrix = ctx->qmatrix_l; |
||||
return 0; |
||||
} |
||||
} |
||||
|
||||
static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg) |
||||
{ |
||||
DNXHDEncContext *ctx = arg; |
||||
int mb_y, mb_x; |
||||
int qscale = ctx->thread[0]->qscale; |
||||
|
||||
for (mb_y = ctx->m.start_mb_y; mb_y < ctx->m.end_mb_y; mb_y++) { |
||||
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++) { |
||||
DECLARE_ALIGNED_16(DCTELEM, block[64]); |
||||
DCTELEM *src_block = ctx->blocks[i]; |
||||
int overflow, nbits, diff, last_index; |
||||
int n = dnxhd_switch_matrix(ctx, i); |
||||
|
||||
memcpy(block, src_block, 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->table_vlc_bits[0]; |
||||
} |
||||
} |
||||
return 0; |
||||
} |
||||
|
||||
static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg) |
||||
{ |
||||
DNXHDEncContext *ctx = arg; |
||||
int mb_y, mb_x; |
||||
|
||||
for (mb_y = ctx->m.start_mb_y; mb_y < ctx->m.end_mb_y; mb_y++) { |
||||
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); |
||||
dnxhd_encode_block(ctx, block, last_index, n); |
||||
} |
||||
} |
||||
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, uint8_t *buf) |
||||
{ |
||||
int mb_y, mb_x; |
||||
int i, offset = 0; |
||||
for (i = 0; i < ctx->m.avctx->thread_count; i++) { |
||||
int thread_size = 0; |
||||
for (mb_y = ctx->thread[i]->m.start_mb_y; mb_y < ctx->thread[i]->m.end_mb_y; mb_y++) { |
||||
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]; |
||||
} |
||||
init_put_bits(&ctx->thread[i]->m.pb, buf + 640 + offset, thread_size); |
||||
offset += thread_size; |
||||
} |
||||
} |
||||
|
||||
static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg) |
||||
{ |
||||
DNXHDEncContext *ctx = arg; |
||||
int mb_y, mb_x; |
||||
for (mb_y = ctx->m.start_mb_y; mb_y < ctx->m.end_mb_y; mb_y++) { |
||||
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) |
||||
{ |
||||
unsigned lambda, up_lambda, down_lambda; |
||||
int x, y, q; |
||||
|
||||
for (q = 1; q < avctx->qmax; q++) { |
||||
ctx->qscale = q; |
||||
avctx->execute(avctx, dnxhd_calc_bits_thread, (void**)&ctx->thread[0], NULL, avctx->thread_count); |
||||
} |
||||
up_lambda = avctx->qmax<<LAMBDA_FRAC_BITS; |
||||
down_lambda = 1; // higher ?
|
||||
lambda = ctx->lambda; |
||||
|
||||
for (;;) { |
||||
int bits = 0; |
||||
int end = 0; |
||||
if (lambda == up_lambda) { |
||||
lambda--; |
||||
end = 1; // need to set final qscales/bits
|
||||
} |
||||
if (lambda == down_lambda) { |
||||
lambda++; |
||||
end = 1; |
||||
} |
||||
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; |
||||
} |
||||
//dprintf(ctx->m.avctx, "lambda %d, up %d, down %d, bits %d, frame %d\n", lambda, up_lambda, down_lambda, bits, ctx->frame_bits);
|
||||
if (end) { |
||||
if (bits > ctx->frame_bits) |
||||
return -1; |
||||
break; |
||||
} |
||||
if (bits < ctx->frame_bits) { |
||||
up_lambda = lambda; |
||||
lambda = (down_lambda+lambda)>>1; |
||||
} else { |
||||
down_lambda = lambda; |
||||
lambda = (up_lambda+lambda)>>1; |
||||
} |
||||
} |
||||
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->execute(ctx->m.avctx, dnxhd_calc_bits_thread, (void**)&ctx->thread[0], NULL, ctx->m.avctx->thread_count); |
||||
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; |
||||
} |
||||
//dprintf(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) |
||||
break; |
||||
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; |
||||
} |
||||
} |
||||
//dprintf(ctx->m.avctx, "out qscale %d\n", qscale);
|
||||
ctx->qscale = qscale; |
||||
return 0; |
||||
} |
||||
|
||||
static int dnxhd_rc_cmp(const void *a, const void *b) |
||||
{ |
||||
return ((RCCMPEntry *)b)->value - ((RCCMPEntry *)a)->value; |
||||
} |
||||
|
||||
static int dnxhd_encode_variance(AVCodecContext *avctx, DNXHDEncContext *ctx) |
||||
{ |
||||
int max_bits = 0; |
||||
int x, y; |
||||
if (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 (max_bits > ctx->frame_bits) { |
||||
if (RC_VARIANCE) |
||||
avctx->execute(avctx, dnxhd_mb_var_thread, (void**)&ctx->thread[0], NULL, avctx->thread_count); |
||||
qsort(ctx->mb_cmp, ctx->m.mb_num, sizeof(RCEntry), dnxhd_rc_cmp); |
||||
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, 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_variance(avctx, ctx); |
||||
if (ret < 0) { |
||||
av_log(avctx, AV_LOG_ERROR, "picture could not fit ratecontrol constraints\n"); |
||||
return -1; |
||||
} |
||||
|
||||
dnxhd_setup_threads_slices(ctx, buf); |
||||
|
||||
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->execute(avctx, dnxhd_encode_thread, (void**)&ctx->thread[0], NULL, avctx->thread_count); |
||||
|
||||
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; |
||||
} |
||||
|
||||
return ctx->cid_table->frame_size; |
||||
} |
||||
|
||||
static int dnxhd_encode_end(AVCodecContext *avctx) |
||||
{ |
||||
DNXHDEncContext *ctx = avctx->priv_data; |
||||
int i; |
||||
|
||||
av_freep(&ctx->table_vlc_codes); |
||||
av_freep(&ctx->table_vlc_bits); |
||||
av_freep(&ctx->table_run_codes); |
||||
av_freep(&ctx->table_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->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 dnxhd_encoder = { |
||||
"dnxhd", |
||||
CODEC_TYPE_VIDEO, |
||||
CODEC_ID_DNXHD, |
||||
sizeof(DNXHDEncContext), |
||||
dnxhd_encode_init, |
||||
dnxhd_encode_picture, |
||||
dnxhd_encode_end, |
||||
.pix_fmts = (enum PixelFormat[]){PIX_FMT_YUV422P, -1}, |
||||
}; |
||||
Loading…
Reference in new issue