LCOV - code coverage report
Current view: top level - libavcodec - proresenc_anatoliy.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 242 254 95.3 %
Date: 2017-12-11 04:34:20 Functions: 15 15 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Apple ProRes encoder
       3             :  *
       4             :  * Copyright (c) 2011 Anatoliy Wasserman
       5             :  *
       6             :  * This file is part of FFmpeg.
       7             :  *
       8             :  * FFmpeg is free software; you can redistribute it and/or
       9             :  * modify it under the terms of the GNU Lesser General Public
      10             :  * License as published by the Free Software Foundation; either
      11             :  * version 2.1 of the License, or (at your option) any later version.
      12             :  *
      13             :  * FFmpeg is distributed in the hope that it will be useful,
      14             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      15             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      16             :  * Lesser General Public License for more details.
      17             :  *
      18             :  * You should have received a copy of the GNU Lesser General Public
      19             :  * License along with FFmpeg; if not, write to the Free Software
      20             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      21             :  */
      22             : 
      23             : /**
      24             :  * @file
      25             :  * Apple ProRes encoder (Anatoliy Wasserman version)
      26             :  * Known FOURCCs: 'apch' (HQ), 'apcn' (SD), 'apcs' (LT), 'acpo' (Proxy)
      27             :  */
      28             : 
      29             : #include "avcodec.h"
      30             : #include "dct.h"
      31             : #include "internal.h"
      32             : #include "put_bits.h"
      33             : #include "bytestream.h"
      34             : #include "fdctdsp.h"
      35             : 
      36             : #define DEFAULT_SLICE_MB_WIDTH 8
      37             : 
      38             : #define FF_PROFILE_PRORES_PROXY     0
      39             : #define FF_PROFILE_PRORES_LT        1
      40             : #define FF_PROFILE_PRORES_STANDARD  2
      41             : #define FF_PROFILE_PRORES_HQ        3
      42             : 
      43             : static const AVProfile profiles[] = {
      44             :     { FF_PROFILE_PRORES_PROXY,    "apco"},
      45             :     { FF_PROFILE_PRORES_LT,       "apcs"},
      46             :     { FF_PROFILE_PRORES_STANDARD, "apcn"},
      47             :     { FF_PROFILE_PRORES_HQ,       "apch"},
      48             :     { FF_PROFILE_UNKNOWN }
      49             : };
      50             : 
      51             : static const int qp_start_table[4] = { 4, 1, 1, 1 };
      52             : static const int qp_end_table[4]   = { 8, 9, 6, 6 };
      53             : static const int bitrate_table[5]  = { 1000, 2100, 3500, 5400 };
      54             : 
      55             : static const uint8_t progressive_scan[64] = {
      56             :      0,  1,  8,  9,  2,  3, 10, 11,
      57             :     16, 17, 24, 25, 18, 19, 26, 27,
      58             :      4,  5, 12, 20, 13,  6,  7, 14,
      59             :     21, 28, 29, 22, 15, 23, 30, 31,
      60             :     32, 33, 40, 48, 41, 34, 35, 42,
      61             :     49, 56, 57, 50, 43, 36, 37, 44,
      62             :     51, 58, 59, 52, 45, 38, 39, 46,
      63             :     53, 60, 61, 54, 47, 55, 62, 63
      64             : };
      65             : 
      66             : static const uint8_t QMAT_LUMA[4][64] = {
      67             :     {
      68             :          4,  7,  9, 11, 13, 14, 15, 63,
      69             :          7,  7, 11, 12, 14, 15, 63, 63,
      70             :          9, 11, 13, 14, 15, 63, 63, 63,
      71             :         11, 11, 13, 14, 63, 63, 63, 63,
      72             :         11, 13, 14, 63, 63, 63, 63, 63,
      73             :         13, 14, 63, 63, 63, 63, 63, 63,
      74             :         13, 63, 63, 63, 63, 63, 63, 63,
      75             :         63, 63, 63, 63, 63, 63, 63, 63
      76             :     }, {
      77             :          4,  5,  6,  7,  9, 11, 13, 15,
      78             :          5,  5,  7,  8, 11, 13, 15, 17,
      79             :          6,  7,  9, 11, 13, 15, 15, 17,
      80             :          7,  7,  9, 11, 13, 15, 17, 19,
      81             :          7,  9, 11, 13, 14, 16, 19, 23,
      82             :          9, 11, 13, 14, 16, 19, 23, 29,
      83             :          9, 11, 13, 15, 17, 21, 28, 35,
      84             :         11, 13, 16, 17, 21, 28, 35, 41
      85             :     }, {
      86             :          4,  4,  5,  5,  6,  7,  7,  9,
      87             :          4,  4,  5,  6,  7,  7,  9,  9,
      88             :          5,  5,  6,  7,  7,  9,  9, 10,
      89             :          5,  5,  6,  7,  7,  9,  9, 10,
      90             :          5,  6,  7,  7,  8,  9, 10, 12,
      91             :          6,  7,  7,  8,  9, 10, 12, 15,
      92             :          6,  7,  7,  9, 10, 11, 14, 17,
      93             :          7,  7,  9, 10, 11, 14, 17, 21
      94             :     }, {
      95             :          4,  4,  4,  4,  4,  4,  4,  4,
      96             :          4,  4,  4,  4,  4,  4,  4,  4,
      97             :          4,  4,  4,  4,  4,  4,  4,  4,
      98             :          4,  4,  4,  4,  4,  4,  4,  5,
      99             :          4,  4,  4,  4,  4,  4,  5,  5,
     100             :          4,  4,  4,  4,  4,  5,  5,  6,
     101             :          4,  4,  4,  4,  5,  5,  6,  7,
     102             :          4,  4,  4,  4,  5,  6,  7,  7
     103             :     }
     104             : };
     105             : 
     106             : static const uint8_t QMAT_CHROMA[4][64] = {
     107             :     {
     108             :          4,  7,  9, 11, 13, 14, 63, 63,
     109             :          7,  7, 11, 12, 14, 63, 63, 63,
     110             :          9, 11, 13, 14, 63, 63, 63, 63,
     111             :         11, 11, 13, 14, 63, 63, 63, 63,
     112             :         11, 13, 14, 63, 63, 63, 63, 63,
     113             :         13, 14, 63, 63, 63, 63, 63, 63,
     114             :         13, 63, 63, 63, 63, 63, 63, 63,
     115             :         63, 63, 63, 63, 63, 63, 63, 63
     116             :     }, {
     117             :          4,  5,  6,  7,  9, 11, 13, 15,
     118             :          5,  5,  7,  8, 11, 13, 15, 17,
     119             :          6,  7,  9, 11, 13, 15, 15, 17,
     120             :          7,  7,  9, 11, 13, 15, 17, 19,
     121             :          7,  9, 11, 13, 14, 16, 19, 23,
     122             :          9, 11, 13, 14, 16, 19, 23, 29,
     123             :          9, 11, 13, 15, 17, 21, 28, 35,
     124             :         11, 13, 16, 17, 21, 28, 35, 41
     125             :     }, {
     126             :          4,  4,  5,  5,  6,  7,  7,  9,
     127             :          4,  4,  5,  6,  7,  7,  9,  9,
     128             :          5,  5,  6,  7,  7,  9,  9, 10,
     129             :          5,  5,  6,  7,  7,  9,  9, 10,
     130             :          5,  6,  7,  7,  8,  9, 10, 12,
     131             :          6,  7,  7,  8,  9, 10, 12, 15,
     132             :          6,  7,  7,  9, 10, 11, 14, 17,
     133             :          7,  7,  9, 10, 11, 14, 17, 21
     134             :     }, {
     135             :          4,  4,  4,  4,  4,  4,  4,  4,
     136             :          4,  4,  4,  4,  4,  4,  4,  4,
     137             :          4,  4,  4,  4,  4,  4,  4,  4,
     138             :          4,  4,  4,  4,  4,  4,  4,  5,
     139             :          4,  4,  4,  4,  4,  4,  5,  5,
     140             :          4,  4,  4,  4,  4,  5,  5,  6,
     141             :          4,  4,  4,  4,  5,  5,  6,  7,
     142             :          4,  4,  4,  4,  5,  6,  7,  7
     143             :     }
     144             : };
     145             : 
     146             : 
     147             : typedef struct {
     148             :     FDCTDSPContext fdsp;
     149             :     uint8_t* fill_y;
     150             :     uint8_t* fill_u;
     151             :     uint8_t* fill_v;
     152             : 
     153             :     int qmat_luma[16][64];
     154             :     int qmat_chroma[16][64];
     155             : } ProresContext;
     156             : 
     157    31966682 : static void encode_codeword(PutBitContext *pb, int val, int codebook)
     158             : {
     159             :     unsigned int rice_order, exp_order, switch_bits, first_exp, exp, zeros;
     160             : 
     161             :     /* number of bits to switch between rice and exp golomb */
     162    31966682 :     switch_bits = codebook & 3;
     163    31966682 :     rice_order  = codebook >> 5;
     164    31966682 :     exp_order   = (codebook >> 2) & 7;
     165             : 
     166    31966682 :     first_exp = ((switch_bits + 1) << rice_order);
     167             : 
     168    31966682 :     if (val >= first_exp) { /* exp golomb */
     169    10622308 :         val -= first_exp;
     170    10622308 :         val += (1 << exp_order);
     171    10622308 :         exp = av_log2(val);
     172    10622308 :         zeros = exp - exp_order + switch_bits + 1;
     173    10622308 :         put_bits(pb, zeros, 0);
     174    10622308 :         put_bits(pb, exp + 1, val);
     175    21344374 :     } else if (rice_order) {
     176     2298506 :         put_bits(pb, (val >> rice_order), 0);
     177     2298506 :         put_bits(pb, 1, 1);
     178     2298506 :         put_sbits(pb, rice_order, val);
     179             :     } else {
     180    19045868 :         put_bits(pb, val, 0);
     181    19045868 :         put_bits(pb, 1, 1);
     182             :     }
     183    31966682 : }
     184             : 
     185             : #define QSCALE(qmat,ind,val) ((val) / ((qmat)[ind]))
     186             : #define TO_GOLOMB(val) (((val) << 1) ^ ((val) >> 31))
     187             : #define DIFF_SIGN(val, sign) (((val) >> 31) ^ (sign))
     188             : #define IS_NEGATIVE(val) ((((val) >> 31) ^ -1) + 1)
     189             : #define TO_GOLOMB2(val,sign) ((val)==0 ? 0 : ((val) << 1) + (sign))
     190             : 
     191    16858710 : static av_always_inline int get_level(int val)
     192             : {
     193    16858710 :     int sign = (val >> 31);
     194    16858710 :     return (val ^ sign) - sign;
     195             : }
     196             : 
     197             : #define FIRST_DC_CB 0xB8
     198             : 
     199             : static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70};
     200             : 
     201       45237 : static void encode_dc_coeffs(PutBitContext *pb, int16_t *in,
     202             :         int blocks_per_slice, int *qmat)
     203             : {
     204             :     int prev_dc, code;
     205             :     int i, sign, idx;
     206             :     int new_dc, delta, diff_sign, new_code;
     207             : 
     208       45237 :     prev_dc = QSCALE(qmat, 0, in[0] - 16384);
     209       45237 :     code = TO_GOLOMB(prev_dc);
     210       45237 :     encode_codeword(pb, code, FIRST_DC_CB);
     211             : 
     212       45237 :     code = 5; sign = 0; idx = 64;
     213      647520 :     for (i = 1; i < blocks_per_slice; i++, idx += 64) {
     214      602283 :         new_dc    = QSCALE(qmat, 0, in[idx] - 16384);
     215      602283 :         delta     = new_dc - prev_dc;
     216      602283 :         diff_sign = DIFF_SIGN(delta, sign);
     217      602283 :         new_code  = TO_GOLOMB2(get_level(delta), diff_sign);
     218             : 
     219      602283 :         encode_codeword(pb, new_code, dc_codebook[FFMIN(code, 6)]);
     220             : 
     221      602283 :         code      = new_code;
     222      602283 :         sign      = delta >> 31;
     223      602283 :         prev_dc   = new_dc;
     224             :     }
     225       45237 : }
     226             : 
     227             : static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29,
     228             :         0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C };
     229             : static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28,
     230             :         0x28, 0x28, 0x28, 0x4C };
     231             : 
     232       45237 : static void encode_ac_coeffs(AVCodecContext *avctx, PutBitContext *pb,
     233             :         int16_t *in, int blocks_per_slice, int *qmat)
     234             : {
     235       45237 :     int prev_run = 4;
     236       45237 :     int prev_level = 2;
     237             : 
     238       45237 :     int run = 0, level, code, i, j;
     239     2895168 :     for (i = 1; i < 64; i++) {
     240     2849931 :         int indp = progressive_scan[i];
     241    43643691 :         for (j = 0; j < blocks_per_slice; j++) {
     242    40793760 :             int val = QSCALE(qmat, indp, in[(j << 6) + indp]);
     243    40793760 :             if (val) {
     244    15659581 :                 encode_codeword(pb, run, run_to_cb[FFMIN(prev_run, 15)]);
     245             : 
     246    15659581 :                 prev_run   = run;
     247    15659581 :                 run        = 0;
     248    15659581 :                 level      = get_level(val);
     249    15659581 :                 code       = level - 1;
     250             : 
     251    15659581 :                 encode_codeword(pb, code, lev_to_cb[FFMIN(prev_level, 9)]);
     252             : 
     253    15659581 :                 prev_level = level;
     254             : 
     255    15659581 :                 put_bits(pb, 1, IS_NEGATIVE(val));
     256             :             } else {
     257    25134179 :                 ++run;
     258             :             }
     259             :         }
     260             :     }
     261       45237 : }
     262             : 
     263      647520 : static void get(uint8_t *pixels, int stride, int16_t* block)
     264             : {
     265             :     int i;
     266             : 
     267     5827680 :     for (i = 0; i < 8; i++) {
     268     5180160 :         AV_WN64(block, AV_RN64(pixels));
     269     5180160 :         AV_WN64(block+4, AV_RN64(pixels+8));
     270     5180160 :         pixels += stride;
     271     5180160 :         block += 8;
     272             :     }
     273      647520 : }
     274             : 
     275      647520 : static void fdct_get(FDCTDSPContext *fdsp, uint8_t *pixels, int stride, int16_t* block)
     276             : {
     277      647520 :     get(pixels, stride, block);
     278      647520 :     fdsp->fdct(block);
     279      647520 : }
     280             : 
     281       45237 : static int encode_slice_plane(AVCodecContext *avctx, int mb_count,
     282             :         uint8_t *src, int src_stride, uint8_t *buf, unsigned buf_size,
     283             :         int *qmat, int chroma)
     284             : {
     285       45237 :     ProresContext* ctx = avctx->priv_data;
     286       45237 :     FDCTDSPContext *fdsp = &ctx->fdsp;
     287       45237 :     LOCAL_ALIGNED(16, int16_t, blocks, [DEFAULT_SLICE_MB_WIDTH << 8]);
     288             :     int16_t *block;
     289             :     int i, blocks_per_slice;
     290             :     PutBitContext pb;
     291             : 
     292       45237 :     block = blocks;
     293      288057 :     for (i = 0; i < mb_count; i++) {
     294      242820 :         fdct_get(fdsp, src,                  src_stride, block + (0 << 6));
     295      242820 :         fdct_get(fdsp, src + 8 * src_stride, src_stride, block + ((2 - chroma) << 6));
     296      242820 :         if (!chroma) {
     297       80940 :             fdct_get(fdsp, src + 16,                  src_stride, block + (1 << 6));
     298       80940 :             fdct_get(fdsp, src + 16 + 8 * src_stride, src_stride, block + (3 << 6));
     299             :         }
     300             : 
     301      242820 :         block += (256 >> chroma);
     302      242820 :         src   += (32  >> chroma);
     303             :     }
     304             : 
     305       45237 :     blocks_per_slice = mb_count << (2 - chroma);
     306       45237 :     init_put_bits(&pb, buf, buf_size);
     307             : 
     308       45237 :     encode_dc_coeffs(&pb, blocks, blocks_per_slice, qmat);
     309       45237 :     encode_ac_coeffs(avctx, &pb, blocks, blocks_per_slice, qmat);
     310             : 
     311       45237 :     flush_put_bits(&pb);
     312       45237 :     return put_bits_ptr(&pb) - pb.buf;
     313             : }
     314             : 
     315       15079 : static av_always_inline unsigned encode_slice_data(AVCodecContext *avctx,
     316             :         uint8_t *dest_y, uint8_t *dest_u, uint8_t *dest_v, int luma_stride,
     317             :         int chroma_stride, unsigned mb_count, uint8_t *buf, unsigned data_size,
     318             :         unsigned* y_data_size, unsigned* u_data_size, unsigned* v_data_size,
     319             :         int qp)
     320             : {
     321       15079 :     ProresContext* ctx = avctx->priv_data;
     322             : 
     323       15079 :     *y_data_size = encode_slice_plane(avctx, mb_count, dest_y, luma_stride,
     324       15079 :             buf, data_size, ctx->qmat_luma[qp - 1], 0);
     325             : 
     326       15079 :     if (!(avctx->flags & AV_CODEC_FLAG_GRAY)) {
     327       30158 :         *u_data_size = encode_slice_plane(avctx, mb_count, dest_u,
     328       30158 :                 chroma_stride, buf + *y_data_size, data_size - *y_data_size,
     329       15079 :                 ctx->qmat_chroma[qp - 1], 1);
     330             : 
     331       30158 :         *v_data_size = encode_slice_plane(avctx, mb_count, dest_v,
     332       15079 :                 chroma_stride, buf + *y_data_size + *u_data_size,
     333       15079 :                 data_size - *y_data_size - *u_data_size,
     334       15079 :                 ctx->qmat_chroma[qp - 1], 1);
     335             :     }
     336             : 
     337       15079 :     return *y_data_size + *u_data_size + *v_data_size;
     338             : }
     339             : 
     340         600 : static void subimage_with_fill(uint16_t *src, unsigned x, unsigned y,
     341             :         unsigned stride, unsigned width, unsigned height, uint16_t *dst,
     342             :         unsigned dst_width, unsigned dst_height)
     343             : {
     344             : 
     345         600 :     int box_width = FFMIN(width - x, dst_width);
     346         600 :     int box_height = FFMIN(height - y, dst_height);
     347         600 :     int i, j, src_stride = stride >> 1;
     348             :     uint16_t last_pix, *last_line;
     349             : 
     350         600 :     src += y * src_stride + x;
     351        6000 :     for (i = 0; i < box_height; ++i) {
     352       18600 :         for (j = 0; j < box_width; ++j) {
     353       13200 :             dst[j] = src[j];
     354             :         }
     355        5400 :         last_pix = dst[j - 1];
     356       53000 :         for (; j < dst_width; j++)
     357       47600 :             dst[j] = last_pix;
     358        5400 :         src += src_stride;
     359        5400 :         dst += dst_width;
     360             :     }
     361         600 :     last_line = dst - dst_width;
     362        4800 :     for (; i < dst_height; i++) {
     363       71400 :         for (j = 0; j < dst_width; ++j) {
     364       67200 :             dst[j] = last_line[j];
     365             :         }
     366        4200 :         dst += dst_width;
     367             :     }
     368         600 : }
     369             : 
     370       11100 : static int encode_slice(AVCodecContext *avctx, const AVFrame *pic, int mb_x,
     371             :         int mb_y, unsigned mb_count, uint8_t *buf, unsigned data_size,
     372             :         int unsafe, int *qp)
     373             : {
     374             :     int luma_stride, chroma_stride;
     375       11100 :     int hdr_size = 6, slice_size;
     376             :     uint8_t *dest_y, *dest_u, *dest_v;
     377       11100 :     unsigned y_data_size = 0, u_data_size = 0, v_data_size = 0;
     378       11100 :     ProresContext* ctx = avctx->priv_data;
     379       11100 :     int tgt_bits   = (mb_count * bitrate_table[avctx->profile]) >> 2;
     380       11100 :     int low_bytes  = (tgt_bits - (tgt_bits >> 3)) >> 3; // 12% bitrate fluctuation
     381       11100 :     int high_bytes = (tgt_bits + (tgt_bits >> 3)) >> 3;
     382             : 
     383       11100 :     luma_stride   = pic->linesize[0];
     384       11100 :     chroma_stride = pic->linesize[1];
     385             : 
     386       11100 :     dest_y = pic->data[0] + (mb_y << 4) * luma_stride   + (mb_x << 5);
     387       11100 :     dest_u = pic->data[1] + (mb_y << 4) * chroma_stride + (mb_x << 4);
     388       11100 :     dest_v = pic->data[2] + (mb_y << 4) * chroma_stride + (mb_x << 4);
     389             : 
     390       11100 :     if (unsafe) {
     391             : 
     392         600 :         subimage_with_fill((uint16_t *) pic->data[0], mb_x << 4, mb_y << 4,
     393         400 :                 luma_stride, avctx->width, avctx->height,
     394         200 :                 (uint16_t *) ctx->fill_y, mb_count << 4, 16);
     395         600 :         subimage_with_fill((uint16_t *) pic->data[1], mb_x << 3, mb_y << 4,
     396         400 :                 chroma_stride, avctx->width >> 1, avctx->height,
     397         200 :                 (uint16_t *) ctx->fill_u, mb_count << 3, 16);
     398         600 :         subimage_with_fill((uint16_t *) pic->data[2], mb_x << 3, mb_y << 4,
     399         400 :                 chroma_stride, avctx->width >> 1, avctx->height,
     400         200 :                 (uint16_t *) ctx->fill_v, mb_count << 3, 16);
     401             : 
     402         600 :         encode_slice_data(avctx, ctx->fill_y, ctx->fill_u, ctx->fill_v,
     403         400 :                 mb_count << 5, mb_count << 4, mb_count, buf + hdr_size,
     404             :                 data_size - hdr_size, &y_data_size, &u_data_size, &v_data_size,
     405             :                 *qp);
     406             :     } else {
     407       10900 :         slice_size = encode_slice_data(avctx, dest_y, dest_u, dest_v,
     408             :                 luma_stride, chroma_stride, mb_count, buf + hdr_size,
     409             :                 data_size - hdr_size, &y_data_size, &u_data_size, &v_data_size,
     410             :                 *qp);
     411             : 
     412       11776 :         if (slice_size > high_bytes && *qp < qp_end_table[avctx->profile]) {
     413             :             do {
     414        2435 :                 *qp += 1;
     415        2435 :                 slice_size = encode_slice_data(avctx, dest_y, dest_u, dest_v,
     416             :                         luma_stride, chroma_stride, mb_count, buf + hdr_size,
     417             :                         data_size - hdr_size, &y_data_size, &u_data_size,
     418             :                         &v_data_size, *qp);
     419        2435 :             } while (slice_size > high_bytes && *qp < qp_end_table[avctx->profile]);
     420       10685 :         } else if (slice_size < low_bytes && *qp
     421         661 :                 > qp_start_table[avctx->profile]) {
     422             :             do {
     423        1544 :                 *qp -= 1;
     424        1544 :                 slice_size = encode_slice_data(avctx, dest_y, dest_u, dest_v,
     425             :                         luma_stride, chroma_stride, mb_count, buf + hdr_size,
     426             :                         data_size - hdr_size, &y_data_size, &u_data_size,
     427             :                         &v_data_size, *qp);
     428        1544 :             } while (slice_size < low_bytes && *qp > qp_start_table[avctx->profile]);
     429             :         }
     430             :     }
     431             : 
     432       11100 :     buf[0] = hdr_size << 3;
     433       11100 :     buf[1] = *qp;
     434       11100 :     AV_WB16(buf + 2, y_data_size);
     435       11100 :     AV_WB16(buf + 4, u_data_size);
     436             : 
     437       11100 :     return hdr_size + y_data_size + u_data_size + v_data_size;
     438             : }
     439             : 
     440         200 : static int prores_encode_picture(AVCodecContext *avctx, const AVFrame *pic,
     441             :         uint8_t *buf, const int buf_size)
     442             : {
     443         200 :     int mb_width = (avctx->width + 15) >> 4;
     444         200 :     int mb_height = (avctx->height + 15) >> 4;
     445             :     int hdr_size, sl_size, i;
     446             :     int mb_y, sl_data_size, qp;
     447             :     int unsafe_bot, unsafe_right;
     448             :     uint8_t *sl_data, *sl_data_sizes;
     449         200 :     int slice_per_line = 0, rem = mb_width;
     450             : 
     451        1000 :     for (i = av_log2(DEFAULT_SLICE_MB_WIDTH); i >= 0; --i) {
     452         800 :         slice_per_line += rem >> i;
     453         800 :         rem &= (1 << i) - 1;
     454             :     }
     455             : 
     456         200 :     qp = qp_start_table[avctx->profile];
     457         200 :     hdr_size = 8; sl_data_size = buf_size - hdr_size;
     458         200 :     sl_data_sizes = buf + hdr_size;
     459         200 :     sl_data = sl_data_sizes + (slice_per_line * mb_height * 2);
     460        3050 :     for (mb_y = 0; mb_y < mb_height; mb_y++) {
     461        2850 :         int mb_x = 0;
     462        2850 :         int slice_mb_count = DEFAULT_SLICE_MB_WIDTH;
     463       16800 :         while (mb_x < mb_width) {
     464       28050 :             while (mb_width - mb_x < slice_mb_count)
     465        5850 :                 slice_mb_count >>= 1;
     466             : 
     467       11100 :             unsafe_bot = (avctx->height & 0xf) && (mb_y == mb_height - 1);
     468       11100 :             unsafe_right = (avctx->width & 0xf) && (mb_x + slice_mb_count == mb_width);
     469             : 
     470       11100 :             sl_size = encode_slice(avctx, pic, mb_x, mb_y, slice_mb_count,
     471             :                     sl_data, sl_data_size, unsafe_bot || unsafe_right, &qp);
     472             : 
     473       11100 :             bytestream_put_be16(&sl_data_sizes, sl_size);
     474       11100 :             sl_data           += sl_size;
     475       11100 :             sl_data_size      -= sl_size;
     476       11100 :             mb_x              += slice_mb_count;
     477             :         }
     478             :     }
     479             : 
     480         200 :     buf[0] = hdr_size << 3;
     481         200 :     AV_WB32(buf + 1, sl_data - buf);
     482         200 :     AV_WB16(buf + 5, slice_per_line * mb_height);
     483         200 :     buf[7] = av_log2(DEFAULT_SLICE_MB_WIDTH) << 4;
     484             : 
     485         200 :     return sl_data - buf;
     486             : }
     487             : 
     488         200 : static int prores_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     489             :                                const AVFrame *pict, int *got_packet)
     490             : {
     491         200 :     int header_size = 148;
     492             :     uint8_t *buf;
     493             :     int pic_size, ret;
     494         200 :     int frame_size = FFALIGN(avctx->width, 16) * FFALIGN(avctx->height, 16)*16 + 500 + AV_INPUT_BUFFER_MIN_SIZE; //FIXME choose tighter limit
     495             : 
     496             : 
     497         200 :     if ((ret = ff_alloc_packet2(avctx, pkt, frame_size + AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0)
     498           0 :         return ret;
     499             : 
     500         200 :     buf = pkt->data;
     501         200 :     pic_size = prores_encode_picture(avctx, pict, buf + header_size + 8,
     502         200 :             pkt->size - header_size - 8);
     503             : 
     504         200 :     bytestream_put_be32(&buf, pic_size + 8 + header_size);
     505         200 :     bytestream_put_buffer(&buf, "icpf", 4);
     506             : 
     507         200 :     bytestream_put_be16(&buf, header_size);
     508         200 :     bytestream_put_be16(&buf, 0);
     509         200 :     bytestream_put_buffer(&buf, "fmpg", 4);
     510         200 :     bytestream_put_be16(&buf, avctx->width);
     511         200 :     bytestream_put_be16(&buf, avctx->height);
     512         200 :     *buf++ = 0x83; // {10}(422){00}{00}(frame){11}
     513         200 :     *buf++ = 0;
     514         200 :     *buf++ = 2;
     515         200 :     *buf++ = 2;
     516         200 :     *buf++ = 6;
     517         200 :     *buf++ = 32;
     518         200 :     *buf++ = 0;
     519         200 :     *buf++ = 3;
     520             : 
     521         200 :     bytestream_put_buffer(&buf, QMAT_LUMA[avctx->profile],   64);
     522         200 :     bytestream_put_buffer(&buf, QMAT_CHROMA[avctx->profile], 64);
     523             : 
     524         200 :     pkt->flags |= AV_PKT_FLAG_KEY;
     525         200 :     pkt->size = pic_size + 8 + header_size;
     526         200 :     *got_packet = 1;
     527             : 
     528         200 :     return 0;
     529             : }
     530             : 
     531         128 : static void scale_mat(const uint8_t* src, int* dst, int scale)
     532             : {
     533             :     int i;
     534        8320 :     for (i = 0; i < 64; i++)
     535        8192 :         dst[i] = src[i] * scale;
     536         128 : }
     537             : 
     538           4 : static av_cold int prores_encode_init(AVCodecContext *avctx)
     539             : {
     540             :     int i;
     541           4 :     ProresContext* ctx = avctx->priv_data;
     542             : 
     543           4 :     if (avctx->pix_fmt != AV_PIX_FMT_YUV422P10) {
     544           0 :         av_log(avctx, AV_LOG_ERROR, "need YUV422P10\n");
     545           0 :         return AVERROR_PATCHWELCOME;
     546             :     }
     547           4 :     avctx->bits_per_raw_sample = 10;
     548             : 
     549           4 :     if (avctx->width & 0x1) {
     550           0 :         av_log(avctx, AV_LOG_ERROR,
     551             :                 "frame width needs to be multiple of 2\n");
     552           0 :         return AVERROR(EINVAL);
     553             :     }
     554             : 
     555           4 :     if (avctx->width > 65534 || avctx->height > 65535) {
     556           0 :         av_log(avctx, AV_LOG_ERROR,
     557             :                 "The maximum dimensions are 65534x65535\n");
     558           0 :         return AVERROR(EINVAL);
     559             :     }
     560             : 
     561           4 :     if ((avctx->height & 0xf) || (avctx->width & 0xf)) {
     562           1 :         ctx->fill_y = av_malloc(4 * (DEFAULT_SLICE_MB_WIDTH << 8));
     563           1 :         if (!ctx->fill_y)
     564           0 :             return AVERROR(ENOMEM);
     565           1 :         ctx->fill_u = ctx->fill_y + (DEFAULT_SLICE_MB_WIDTH << 9);
     566           1 :         ctx->fill_v = ctx->fill_u + (DEFAULT_SLICE_MB_WIDTH << 8);
     567             :     }
     568             : 
     569           4 :     if (avctx->profile == FF_PROFILE_UNKNOWN) {
     570           4 :         avctx->profile = FF_PROFILE_PRORES_STANDARD;
     571           4 :         av_log(avctx, AV_LOG_INFO,
     572             :                 "encoding with ProRes standard (apcn) profile\n");
     573             : 
     574           0 :     } else if (avctx->profile < FF_PROFILE_PRORES_PROXY
     575           0 :             || avctx->profile > FF_PROFILE_PRORES_HQ) {
     576           0 :         av_log(
     577             :                 avctx,
     578             :                 AV_LOG_ERROR,
     579             :                 "unknown profile %d, use [0 - apco, 1 - apcs, 2 - apcn (default), 3 - apch]\n",
     580             :                 avctx->profile);
     581           0 :         return AVERROR(EINVAL);
     582             :     }
     583             : 
     584           4 :     ff_fdctdsp_init(&ctx->fdsp, avctx);
     585             : 
     586           4 :     avctx->codec_tag = AV_RL32((const uint8_t*)profiles[avctx->profile].name);
     587             : 
     588          68 :     for (i = 1; i <= 16; i++) {
     589          64 :         scale_mat(QMAT_LUMA[avctx->profile]  , ctx->qmat_luma[i - 1]  , i);
     590          64 :         scale_mat(QMAT_CHROMA[avctx->profile], ctx->qmat_chroma[i - 1], i);
     591             :     }
     592             : 
     593           4 :     return 0;
     594             : }
     595             : 
     596           4 : static av_cold int prores_encode_close(AVCodecContext *avctx)
     597             : {
     598           4 :     ProresContext* ctx = avctx->priv_data;
     599           4 :     av_freep(&ctx->fill_y);
     600             : 
     601           4 :     return 0;
     602             : }
     603             : 
     604             : AVCodec ff_prores_aw_encoder = {
     605             :     .name           = "prores_aw",
     606             :     .long_name      = NULL_IF_CONFIG_SMALL("Apple ProRes"),
     607             :     .type           = AVMEDIA_TYPE_VIDEO,
     608             :     .id             = AV_CODEC_ID_PRORES,
     609             :     .priv_data_size = sizeof(ProresContext),
     610             :     .init           = prores_encode_init,
     611             :     .close          = prores_encode_close,
     612             :     .encode2        = prores_encode_frame,
     613             :     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUV422P10, AV_PIX_FMT_NONE},
     614             :     .capabilities   = AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_INTRA_ONLY,
     615             :     .profiles       = profiles
     616             : };
     617             : 
     618             : AVCodec ff_prores_encoder = {
     619             :     .name           = "prores",
     620             :     .long_name      = NULL_IF_CONFIG_SMALL("Apple ProRes"),
     621             :     .type           = AVMEDIA_TYPE_VIDEO,
     622             :     .id             = AV_CODEC_ID_PRORES,
     623             :     .priv_data_size = sizeof(ProresContext),
     624             :     .init           = prores_encode_init,
     625             :     .close          = prores_encode_close,
     626             :     .encode2        = prores_encode_frame,
     627             :     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUV422P10, AV_PIX_FMT_NONE},
     628             :     .capabilities   = AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_INTRA_ONLY,
     629             :     .profiles       = profiles
     630             : };

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