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FFmpeg/libavcodec/proresenc_anatoliy.c

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  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 "internal.h"

  31. #include "put_bits.h"

  32. #include "bytestream.h"

  33. #include "dsputil.h"

  34. 

  35. #define DEFAULT_SLICE_MB_WIDTH 8

  36. 

  37. #define FF_PROFILE_PRORES_PROXY     0

  38. #define FF_PROFILE_PRORES_LT        1

  39. #define FF_PROFILE_PRORES_STANDARD  2

  40. #define FF_PROFILE_PRORES_HQ        3

  41. 

  42. static const AVProfile profiles[] = {

  43.     { FF_PROFILE_PRORES_PROXY,    "apco"},

  44.     { FF_PROFILE_PRORES_LT,       "apcs"},

  45.     { FF_PROFILE_PRORES_STANDARD, "apcn"},

  46.     { FF_PROFILE_PRORES_HQ,       "apch"},

  47.     { FF_PROFILE_UNKNOWN }

  48. };

  49. 

  50. static const int qp_start_table[4] = { 4, 1, 1, 1 };

  51. static const int qp_end_table[4]   = { 8, 9, 6, 6 };

  52. static const int bitrate_table[5]  = { 1000, 2100, 3500, 5400 };

  53. 

  54. static const uint8_t progressive_scan[64] = {

  55.      0,  1,  8,  9,  2,  3, 10, 11,

  56.     16, 17, 24, 25, 18, 19, 26, 27,

  57.      4,  5, 12, 20, 13,  6,  7, 14,

  58.     21, 28, 29, 22, 15, 23, 30, 31,

  59.     32, 33, 40, 48, 41, 34, 35, 42,

  60.     49, 56, 57, 50, 43, 36, 37, 44,

  61.     51, 58, 59, 52, 45, 38, 39, 46,

  62.     53, 60, 61, 54, 47, 55, 62, 63

  63. };

  64. 

  65. static const uint8_t QMAT_LUMA[4][64] = {

  66.     {

  67.          4,  7,  9, 11, 13, 14, 15, 63,

  68.          7,  7, 11, 12, 14, 15, 63, 63,

  69.          9, 11, 13, 14, 15, 63, 63, 63,

  70.         11, 11, 13, 14, 63, 63, 63, 63,

  71.         11, 13, 14, 63, 63, 63, 63, 63,

  72.         13, 14, 63, 63, 63, 63, 63, 63,

  73.         13, 63, 63, 63, 63, 63, 63, 63,

  74.         63, 63, 63, 63, 63, 63, 63, 63

  75.     }, {

  76.          4,  5,  6,  7,  9, 11, 13, 15,

  77.          5,  5,  7,  8, 11, 13, 15, 17,

  78.          6,  7,  9, 11, 13, 15, 15, 17,

  79.          7,  7,  9, 11, 13, 15, 17, 19,

  80.          7,  9, 11, 13, 14, 16, 19, 23,

  81.          9, 11, 13, 14, 16, 19, 23, 29,

  82.          9, 11, 13, 15, 17, 21, 28, 35,

  83.         11, 13, 16, 17, 21, 28, 35, 41

  84.     }, {

  85.          4,  4,  5,  5,  6,  7,  7,  9,

  86.          4,  4,  5,  6,  7,  7,  9,  9,

  87.          5,  5,  6,  7,  7,  9,  9, 10,

  88.          5,  5,  6,  7,  7,  9,  9, 10,

  89.          5,  6,  7,  7,  8,  9, 10, 12,

  90.          6,  7,  7,  8,  9, 10, 12, 15,

  91.          6,  7,  7,  9, 10, 11, 14, 17,

  92.          7,  7,  9, 10, 11, 14, 17, 21

  93.     }, {

  94.          4,  4,  4,  4,  4,  4,  4,  4,

  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,  5,

  98.          4,  4,  4,  4,  4,  4,  5,  5,

  99.          4,  4,  4,  4,  4,  5,  5,  6,

  100.          4,  4,  4,  4,  5,  5,  6,  7,

  101.          4,  4,  4,  4,  5,  6,  7,  7

  102.     }

  103. };

  104. 

  105. static const uint8_t QMAT_CHROMA[4][64] = {

  106.     {

  107.          4,  7,  9, 11, 13, 14, 63, 63,

  108.          7,  7, 11, 12, 14, 63, 63, 63,

  109.          9, 11, 13, 14, 63, 63, 63, 63,

  110.         11, 11, 13, 14, 63, 63, 63, 63,

  111.         11, 13, 14, 63, 63, 63, 63, 63,

  112.         13, 14, 63, 63, 63, 63, 63, 63,

  113.         13, 63, 63, 63, 63, 63, 63, 63,

  114.         63, 63, 63, 63, 63, 63, 63, 63

  115.     }, {

  116.          4,  5,  6,  7,  9, 11, 13, 15,

  117.          5,  5,  7,  8, 11, 13, 15, 17,

  118.          6,  7,  9, 11, 13, 15, 15, 17,

  119.          7,  7,  9, 11, 13, 15, 17, 19,

  120.          7,  9, 11, 13, 14, 16, 19, 23,

  121.          9, 11, 13, 14, 16, 19, 23, 29,

  122.          9, 11, 13, 15, 17, 21, 28, 35,

  123.         11, 13, 16, 17, 21, 28, 35, 41

  124.     }, {

  125.          4,  4,  5,  5,  6,  7,  7,  9,

  126.          4,  4,  5,  6,  7,  7,  9,  9,

  127.          5,  5,  6,  7,  7,  9,  9, 10,

  128.          5,  5,  6,  7,  7,  9,  9, 10,

  129.          5,  6,  7,  7,  8,  9, 10, 12,

  130.          6,  7,  7,  8,  9, 10, 12, 15,

  131.          6,  7,  7,  9, 10, 11, 14, 17,

  132.          7,  7,  9, 10, 11, 14, 17, 21

  133.     }, {

  134.          4,  4,  4,  4,  4,  4,  4,  4,

  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,  5,

  138.          4,  4,  4,  4,  4,  4,  5,  5,

  139.          4,  4,  4,  4,  4,  5,  5,  6,

  140.          4,  4,  4,  4,  5,  5,  6,  7,

  141.          4,  4,  4,  4,  5,  6,  7,  7

  142.     }

  143. };

  144. 

  145. 

  146. typedef struct {

  147.     uint8_t* fill_y;

  148.     uint8_t* fill_u;

  149.     uint8_t* fill_v;

  150. 

  151.     int qmat_luma[16][64];

  152.     int qmat_chroma[16][64];

  153. } ProresContext;

  154. 

  155. static void encode_codeword(PutBitContext *pb, int val, int codebook)

  156. {

  157.     unsigned int rice_order, exp_order, switch_bits, first_exp, exp, zeros,

  158.             mask;

  159. 

  160.     /* number of bits to switch between rice and exp golomb */

  161.     switch_bits = codebook & 3;

  162.     rice_order  = codebook >> 5;

  163.     exp_order   = (codebook >> 2) & 7;

  164. 

  165.     first_exp = ((switch_bits + 1) << rice_order);

  166. 

  167.     if (val >= first_exp) { /* exp golomb */

  168.         val -= first_exp;

  169.         val += (1 << exp_order);

  170.         exp = av_log2(val);

  171.         zeros = exp - exp_order + switch_bits + 1;

  172.         put_bits(pb, zeros, 0);

  173.         put_bits(pb, exp + 1, val);

  174.     } else if (rice_order) {

  175.         mask = (1 << rice_order) - 1;

  176.         put_bits(pb, (val >> rice_order), 0);

  177.         put_bits(pb, 1, 1);

  178.         put_bits(pb, rice_order, val & mask);

  179.     } else {

  180.         put_bits(pb, val, 0);

  181.         put_bits(pb, 1, 1);

  182.     }

  183. }

  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. static av_always_inline int get_level(int val)

  192. {

  193.     int sign = (val >> 31);

  194.     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. 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.     prev_dc = QSCALE(qmat, 0, in[0] - 16384);

  209.     code = TO_GOLOMB(prev_dc);

  210.     encode_codeword(pb, code, FIRST_DC_CB);

  211. 

  212.     code = 5; sign = 0; idx = 64;

  213.     for (i = 1; i < blocks_per_slice; i++, idx += 64) {

  214.         new_dc    = QSCALE(qmat, 0, in[idx] - 16384);

  215.         delta     = new_dc - prev_dc;

  216.         diff_sign = DIFF_SIGN(delta, sign);

  217.         new_code  = TO_GOLOMB2(get_level(delta), diff_sign);

  218. 

  219.         encode_codeword(pb, new_code, dc_codebook[FFMIN(code, 6)]);

  220. 

  221.         code      = new_code;

  222.         sign      = delta >> 31;

  223.         prev_dc   = new_dc;

  224.     }

  225. }

  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. static void encode_ac_coeffs(AVCodecContext *avctx, PutBitContext *pb,

  233.         int16_t *in, int blocks_per_slice, int *qmat)

  234. {

  235.     int prev_run = 4;

  236.     int prev_level = 2;

  237. 

  238.     int run = 0, level, code, i, j;

  239.     for (i = 1; i < 64; i++) {

  240.         int indp = progressive_scan[i];

  241.         for (j = 0; j < blocks_per_slice; j++) {

  242.             int val = QSCALE(qmat, indp, in[(j << 6) + indp]);

  243.             if (val) {

  244.                 encode_codeword(pb, run, run_to_cb[FFMIN(prev_run, 15)]);

  245. 

  246.                 prev_run   = run;

  247.                 run        = 0;

  248.                 level      = get_level(val);

  249.                 code       = level - 1;

  250. 

  251.                 encode_codeword(pb, code, lev_to_cb[FFMIN(prev_level, 9)]);

  252. 

  253.                 prev_level = level;

  254. 

  255.                 put_bits(pb, 1, IS_NEGATIVE(val));

  256.             } else {

  257.                 ++run;

  258.             }

  259.         }

  260.     }

  261. }

  262. 

  263. static void get(uint8_t *pixels, int stride, int16_t* block)

  264. {

  265.     int16_t *p = (int16_t*)pixels;

  266.     int i, j;

  267. 

  268.     stride >>= 1;

  269.     for (i = 0; i < 8; i++) {

  270.         for (j = 0; j < 8; j++) {

  271.             block[j] = p[j];

  272.         }

  273.         p += stride;

  274.         block += 8;

  275.     }

  276. }

  277. 

  278. static void fdct_get(uint8_t *pixels, int stride, int16_t* block)

  279. {

  280.     get(pixels, stride, block);

  281.     ff_jpeg_fdct_islow_10(block);

  282. }

  283. 

  284. static int encode_slice_plane(AVCodecContext *avctx, int mb_count,

  285.         uint8_t *src, int src_stride, uint8_t *buf, unsigned buf_size,

  286.         int *qmat, int chroma)

  287. {

  288.     DECLARE_ALIGNED(16, int16_t, blocks)[DEFAULT_SLICE_MB_WIDTH << 8], *block;

  289.     int i, blocks_per_slice;

  290.     PutBitContext pb;

  291. 

  292.     block = blocks;

  293.     for (i = 0; i < mb_count; i++) {

  294.         fdct_get(src,                  src_stride, block + (0 << 6));

  295.         fdct_get(src + 8 * src_stride, src_stride, block + ((2 - chroma) << 6));

  296.         if (!chroma) {

  297.             fdct_get(src + 16,                  src_stride, block + (1 << 6));

  298.             fdct_get(src + 16 + 8 * src_stride, src_stride, block + (3 << 6));

  299.         }

  300. 

  301.         block += (256 >> chroma);

  302.         src   += (32  >> chroma);

  303.     }

  304. 

  305.     blocks_per_slice = mb_count << (2 - chroma);

  306.     init_put_bits(&pb, buf, buf_size << 3);

  307. 

  308.     encode_dc_coeffs(&pb, blocks, blocks_per_slice, qmat);

  309.     encode_ac_coeffs(avctx, &pb, blocks, blocks_per_slice, qmat);

  310. 

  311.     flush_put_bits(&pb);

  312.     return put_bits_ptr(&pb) - pb.buf;

  313. }

  314. 

  315. 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.     ProresContext* ctx = avctx->priv_data;

  322. 

  323.     *y_data_size = encode_slice_plane(avctx, mb_count, dest_y, luma_stride,

  324.             buf, data_size, ctx->qmat_luma[qp - 1], 0);

  325. 

  326.     if (!(avctx->flags & CODEC_FLAG_GRAY)) {

  327.         *u_data_size = encode_slice_plane(avctx, mb_count, dest_u,

  328.                 chroma_stride, buf + *y_data_size, data_size - *y_data_size,

  329.                 ctx->qmat_chroma[qp - 1], 1);

  330. 

  331.         *v_data_size = encode_slice_plane(avctx, mb_count, dest_v,

  332.                 chroma_stride, buf + *y_data_size + *u_data_size,

  333.                 data_size - *y_data_size - *u_data_size,

  334.                 ctx->qmat_chroma[qp - 1], 1);

  335.     }

  336. 

  337.     return *y_data_size + *u_data_size + *v_data_size;

  338. }

  339. 

  340. 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.     int box_width = FFMIN(width - x, dst_width);

  346.     int box_height = FFMIN(height - y, dst_height);

  347.     int i, j, src_stride = stride >> 1;

  348.     uint16_t last_pix, *last_line;

  349. 

  350.     src += y * src_stride + x;

  351.     for (i = 0; i < box_height; ++i) {

  352.         for (j = 0; j < box_width; ++j) {

  353.             dst[j] = src[j];

  354.         }

  355.         last_pix = dst[j - 1];

  356.         for (; j < dst_width; j++)

  357.             dst[j] = last_pix;

  358.         src += src_stride;

  359.         dst += dst_width;

  360.     }

  361.     last_line = dst - dst_width;

  362.     for (; i < dst_height; i++) {

  363.         for (j = 0; j < dst_width; ++j) {

  364.             dst[j] = last_line[j];

  365.         }

  366.         dst += dst_width;

  367.     }

  368. }

  369. 

  370. 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.     int hdr_size = 6, slice_size;

  376.     uint8_t *dest_y, *dest_u, *dest_v;

  377.     unsigned y_data_size = 0, u_data_size = 0, v_data_size = 0;

  378.     ProresContext* ctx = avctx->priv_data;

  379.     int tgt_bits   = (mb_count * bitrate_table[avctx->profile]) >> 2;

  380.     int low_bytes  = (tgt_bits - (tgt_bits >> 3)) >> 3; // 12% bitrate fluctuation

  381.     int high_bytes = (tgt_bits + (tgt_bits >> 3)) >> 3;

  382. 

  383.     luma_stride   = pic->linesize[0];

  384.     chroma_stride = pic->linesize[1];

  385. 

  386.     dest_y = pic->data[0] + (mb_y << 4) * luma_stride   + (mb_x << 5);

  387.     dest_u = pic->data[1] + (mb_y << 4) * chroma_stride + (mb_x << 4);

  388.     dest_v = pic->data[2] + (mb_y << 4) * chroma_stride + (mb_x << 4);

  389. 

  390.     if (unsafe) {

  391. 

  392.         subimage_with_fill((uint16_t *) pic->data[0], mb_x << 4, mb_y << 4,

  393.                 luma_stride, avctx->width, avctx->height,

  394.                 (uint16_t *) ctx->fill_y, mb_count << 4, 16);

  395.         subimage_with_fill((uint16_t *) pic->data[1], mb_x << 3, mb_y << 4,

  396.                 chroma_stride, avctx->width >> 1, avctx->height,

  397.                 (uint16_t *) ctx->fill_u, mb_count << 3, 16);

  398.         subimage_with_fill((uint16_t *) pic->data[2], mb_x << 3, mb_y << 4,

  399.                 chroma_stride, avctx->width >> 1, avctx->height,

  400.                 (uint16_t *) ctx->fill_v, mb_count << 3, 16);

  401. 

  402.         encode_slice_data(avctx, ctx->fill_y, ctx->fill_u, ctx->fill_v,

  403.                 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.         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.         if (slice_size > high_bytes && *qp < qp_end_table[avctx->profile]) {

  413.             do {

  414.                 *qp += 1;

  415.                 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.             } while (slice_size > high_bytes && *qp < qp_end_table[avctx->profile]);

  420.         } else if (slice_size < low_bytes && *qp

  421.                 > qp_start_table[avctx->profile]) {

  422.             do {

  423.                 *qp -= 1;

  424.                 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.             } while (slice_size < low_bytes && *qp > qp_start_table[avctx->profile]);

  429.         }

  430.     }

  431. 

  432.     buf[0] = hdr_size << 3;

  433.     buf[1] = *qp;

  434.     AV_WB16(buf + 2, y_data_size);

  435.     AV_WB16(buf + 4, u_data_size);

  436. 

  437.     return hdr_size + y_data_size + u_data_size + v_data_size;

  438. }

  439. 

  440. static int prores_encode_picture(AVCodecContext *avctx, const AVFrame *pic,

  441.         uint8_t *buf, const int buf_size)

  442. {

  443.     int mb_width = (avctx->width + 15) >> 4;

  444.     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.     int slice_per_line = 0, rem = mb_width;

  450. 

  451.     for (i = av_log2(DEFAULT_SLICE_MB_WIDTH); i >= 0; --i) {

  452.         slice_per_line += rem >> i;

  453.         rem &= (1 << i) - 1;

  454.     }

  455. 

  456.     qp = qp_start_table[avctx->profile];

  457.     hdr_size = 8; sl_data_size = buf_size - hdr_size;

  458.     sl_data_sizes = buf + hdr_size;

  459.     sl_data = sl_data_sizes + (slice_per_line * mb_height * 2);

  460.     for (mb_y = 0; mb_y < mb_height; mb_y++) {

  461.         int mb_x = 0;

  462.         int slice_mb_count = DEFAULT_SLICE_MB_WIDTH;

  463.         while (mb_x < mb_width) {

  464.             while (mb_width - mb_x < slice_mb_count)

  465.                 slice_mb_count >>= 1;

  466. 

  467.             unsafe_bot = (avctx->height & 0xf) && (mb_y == mb_height - 1);

  468.             unsafe_right = (avctx->width & 0xf) && (mb_x + slice_mb_count == mb_width);

  469. 

  470.             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.             bytestream_put_be16(&sl_data_sizes, sl_size);

  474.             sl_data           += sl_size;

  475.             sl_data_size      -= sl_size;

  476.             mb_x              += slice_mb_count;

  477.         }

  478.     }

  479. 

  480.     buf[0] = hdr_size << 3;

  481.     AV_WB32(buf + 1, sl_data - buf);

  482.     AV_WB16(buf + 5, slice_per_line * mb_height);

  483.     buf[7] = av_log2(DEFAULT_SLICE_MB_WIDTH) << 4;

  484. 

  485.     return sl_data - buf;

  486. }

  487. 

  488. static int prores_encode_frame(AVCodecContext *avctx, AVPacket *pkt,

  489.                                const AVFrame *pict, int *got_packet)

  490. {

  491.     int header_size = 148;

  492.     uint8_t *buf;

  493.     int pic_size, ret;

  494.     int frame_size = FFALIGN(avctx->width, 16) * FFALIGN(avctx->height, 16)*16 + 500 + FF_MIN_BUFFER_SIZE; //FIXME choose tighter limit

  495. 

  496. 

  497.     if ((ret = ff_alloc_packet2(avctx, pkt, frame_size + FF_MIN_BUFFER_SIZE)) < 0)

  498.         return ret;

  499. 

  500.     buf = pkt->data;

  501.     pic_size = prores_encode_picture(avctx, pict, buf + header_size + 8,

  502.             pkt->size - header_size - 8);

  503. 

  504.     bytestream_put_be32(&buf, pic_size + 8 + header_size);

  505.     bytestream_put_buffer(&buf, "icpf", 4);

  506. 

  507.     bytestream_put_be16(&buf, header_size);

  508.     bytestream_put_be16(&buf, 0);

  509.     bytestream_put_buffer(&buf, "fmpg", 4);

  510.     bytestream_put_be16(&buf, avctx->width);

  511.     bytestream_put_be16(&buf, avctx->height);

  512.     *buf++ = 0x83; // {10}(422){00}{00}(frame){11}

  513.     *buf++ = 0;

  514.     *buf++ = 2;

  515.     *buf++ = 2;

  516.     *buf++ = 6;

  517.     *buf++ = 32;

  518.     *buf++ = 0;

  519.     *buf++ = 3;

  520. 

  521.     bytestream_put_buffer(&buf, QMAT_LUMA[avctx->profile],   64);

  522.     bytestream_put_buffer(&buf, QMAT_CHROMA[avctx->profile], 64);

  523. 

  524.     pkt->flags |= AV_PKT_FLAG_KEY;

  525.     pkt->size = pic_size + 8 + header_size;

  526.     *got_packet = 1;

  527. 

  528.     return 0;

  529. }

  530. 

  531. static void scale_mat(const uint8_t* src, int* dst, int scale)

  532. {

  533.     int i;

  534.     for (i = 0; i < 64; i++)

  535.         dst[i] = src[i] * scale;

  536. }

  537. 

  538. static av_cold int prores_encode_init(AVCodecContext *avctx)

  539. {

  540.     int i;

  541.     ProresContext* ctx = avctx->priv_data;

  542. 

  543.     if (avctx->pix_fmt != AV_PIX_FMT_YUV422P10) {

  544.         av_log(avctx, AV_LOG_ERROR, "need YUV422P10\n");

  545.         return -1;

  546.     }

  547.     if (avctx->width & 0x1) {

  548.         av_log(avctx, AV_LOG_ERROR,

  549.                 "frame width needs to be multiple of 2\n");

  550.         return -1;

  551.     }

  552. 

  553.     if ((avctx->height & 0xf) || (avctx->width & 0xf)) {

  554.         ctx->fill_y = av_malloc(4 * (DEFAULT_SLICE_MB_WIDTH << 8));

  555.         if (!ctx->fill_y)

  556.             return AVERROR(ENOMEM);

  557.         ctx->fill_u = ctx->fill_y + (DEFAULT_SLICE_MB_WIDTH << 9);

  558.         ctx->fill_v = ctx->fill_u + (DEFAULT_SLICE_MB_WIDTH << 8);

  559.     }

  560. 

  561.     if (avctx->profile == FF_PROFILE_UNKNOWN) {

  562.         avctx->profile = FF_PROFILE_PRORES_STANDARD;

  563.         av_log(avctx, AV_LOG_INFO,

  564.                 "encoding with ProRes standard (apcn) profile\n");

  565. 

  566.     } else if (avctx->profile < FF_PROFILE_PRORES_PROXY

  567.             || avctx->profile > FF_PROFILE_PRORES_HQ) {

  568.         av_log(

  569.                 avctx,

  570.                 AV_LOG_ERROR,

  571.                 "unknown profile %d, use [0 - apco, 1 - apcs, 2 - apcn (default), 3 - apch]\n",

  572.                 avctx->profile);

  573.         return -1;

  574.     }

  575. 

  576.     avctx->codec_tag = AV_RL32((const uint8_t*)profiles[avctx->profile].name);

  577. 

  578.     for (i = 1; i <= 16; i++) {

  579.         scale_mat(QMAT_LUMA[avctx->profile]  , ctx->qmat_luma[i - 1]  , i);

  580.         scale_mat(QMAT_CHROMA[avctx->profile], ctx->qmat_chroma[i - 1], i);

  581.     }

  582. 

  583.     avctx->coded_frame = avcodec_alloc_frame();

  584.     avctx->coded_frame->key_frame = 1;

  585.     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;

  586. 

  587.     return 0;

  588. }

  589. 

  590. static av_cold int prores_encode_close(AVCodecContext *avctx)

  591. {

  592.     ProresContext* ctx = avctx->priv_data;

  593.     av_freep(&avctx->coded_frame);

  594.     av_freep(&ctx->fill_y);

  595. 

  596.     return 0;

  597. }

  598. 

  599. AVCodec ff_prores_anatoliy_encoder = {

  600.     .name           = "prores_anatoliy",

  601.     .type           = AVMEDIA_TYPE_VIDEO,

  602.     .id             = AV_CODEC_ID_PRORES,

  603.     .priv_data_size = sizeof(ProresContext),

  604.     .init           = prores_encode_init,

  605.     .close          = prores_encode_close,

  606.     .encode2        = prores_encode_frame,

  607.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUV422P10, AV_PIX_FMT_NONE},

  608.     .long_name      = NULL_IF_CONFIG_SMALL("Apple ProRes"),

  609.     .capabilities   = CODEC_CAP_FRAME_THREADS | CODEC_CAP_INTRA_ONLY,

  610.     .profiles       = profiles

  611. };

  612. 

  613. AVCodec ff_prores_encoder = {

  614.     .name           = "prores",

  615.     .type           = AVMEDIA_TYPE_VIDEO,

  616.     .id             = AV_CODEC_ID_PRORES,

  617.     .priv_data_size = sizeof(ProresContext),

  618.     .init           = prores_encode_init,

  619.     .close          = prores_encode_close,

  620.     .encode2        = prores_encode_frame,

  621.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUV422P10, AV_PIX_FMT_NONE},

  622.     .long_name      = NULL_IF_CONFIG_SMALL("Apple ProRes"),

  623.     .capabilities   = CODEC_CAP_FRAME_THREADS | CODEC_CAP_INTRA_ONLY,

  624.     .profiles       = profiles

  625. };