proresenc_kostya.c 42.4 KB
Newer Older
Kostya Shishkov's avatar
Kostya Shishkov committed
1 2 3 4 5
/*
 * Apple ProRes encoder
 *
 * Copyright (c) 2012 Konstantin Shishkov
 *
6 7 8
 * This encoder appears to be based on Anatoliy Wassermans considering
 * similarities in the bugs.
 *
9
 * This file is part of FFmpeg.
Kostya Shishkov's avatar
Kostya Shishkov committed
10
 *
11
 * FFmpeg is free software; you can redistribute it and/or
Kostya Shishkov's avatar
Kostya Shishkov committed
12 13 14 15
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
16
 * FFmpeg is distributed in the hope that it will be useful,
Kostya Shishkov's avatar
Kostya Shishkov committed
17 18 19 20 21
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
22
 * License along with FFmpeg; if not, write to the Free Software
Kostya Shishkov's avatar
Kostya Shishkov committed
23 24 25 26
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/opt.h"
27
#include "libavutil/pixdesc.h"
Kostya Shishkov's avatar
Kostya Shishkov committed
28
#include "avcodec.h"
29
#include "dct.h"
Diego Biurrun's avatar
Diego Biurrun committed
30
#include "dsputil.h"
Kostya Shishkov's avatar
Kostya Shishkov committed
31 32 33 34 35 36 37 38 39 40
#include "put_bits.h"
#include "bytestream.h"
#include "internal.h"
#include "proresdata.h"

#define CFACTOR_Y422 2
#define CFACTOR_Y444 3

#define MAX_MBS_PER_SLICE 8

41
#define MAX_PLANES 4
Kostya Shishkov's avatar
Kostya Shishkov committed
42 43 44 45 46 47

enum {
    PRORES_PROFILE_PROXY = 0,
    PRORES_PROFILE_LT,
    PRORES_PROFILE_STANDARD,
    PRORES_PROFILE_HQ,
48
    PRORES_PROFILE_4444,
Kostya Shishkov's avatar
Kostya Shishkov committed
49 50
};

51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
enum {
    QUANT_MAT_PROXY = 0,
    QUANT_MAT_LT,
    QUANT_MAT_STANDARD,
    QUANT_MAT_HQ,
    QUANT_MAT_DEFAULT,
};

static const uint8_t prores_quant_matrices[][64] = {
    { // proxy
         4,  7,  9, 11, 13, 14, 15, 63,
         7,  7, 11, 12, 14, 15, 63, 63,
         9, 11, 13, 14, 15, 63, 63, 63,
        11, 11, 13, 14, 63, 63, 63, 63,
        11, 13, 14, 63, 63, 63, 63, 63,
        13, 14, 63, 63, 63, 63, 63, 63,
        13, 63, 63, 63, 63, 63, 63, 63,
        63, 63, 63, 63, 63, 63, 63, 63,
    },
    { // LT
         4,  5,  6,  7,  9, 11, 13, 15,
         5,  5,  7,  8, 11, 13, 15, 17,
         6,  7,  9, 11, 13, 15, 15, 17,
         7,  7,  9, 11, 13, 15, 17, 19,
         7,  9, 11, 13, 14, 16, 19, 23,
         9, 11, 13, 14, 16, 19, 23, 29,
         9, 11, 13, 15, 17, 21, 28, 35,
        11, 13, 16, 17, 21, 28, 35, 41,
    },
    { // standard
         4,  4,  5,  5,  6,  7,  7,  9,
         4,  4,  5,  6,  7,  7,  9,  9,
         5,  5,  6,  7,  7,  9,  9, 10,
         5,  5,  6,  7,  7,  9,  9, 10,
         5,  6,  7,  7,  8,  9, 10, 12,
         6,  7,  7,  8,  9, 10, 12, 15,
         6,  7,  7,  9, 10, 11, 14, 17,
         7,  7,  9, 10, 11, 14, 17, 21,
    },
    { // high quality
         4,  4,  4,  4,  4,  4,  4,  4,
         4,  4,  4,  4,  4,  4,  4,  4,
         4,  4,  4,  4,  4,  4,  4,  4,
         4,  4,  4,  4,  4,  4,  4,  5,
         4,  4,  4,  4,  4,  4,  5,  5,
         4,  4,  4,  4,  4,  5,  5,  6,
         4,  4,  4,  4,  5,  5,  6,  7,
         4,  4,  4,  4,  5,  6,  7,  7,
    },
    { // codec default
         4,  4,  4,  4,  4,  4,  4,  4,
         4,  4,  4,  4,  4,  4,  4,  4,
         4,  4,  4,  4,  4,  4,  4,  4,
         4,  4,  4,  4,  4,  4,  4,  4,
         4,  4,  4,  4,  4,  4,  4,  4,
         4,  4,  4,  4,  4,  4,  4,  4,
         4,  4,  4,  4,  4,  4,  4,  4,
         4,  4,  4,  4,  4,  4,  4,  4,
    },
};

Kostya Shishkov's avatar
Kostya Shishkov committed
112 113 114 115 116 117 118 119 120 121 122 123 124 125
#define NUM_MB_LIMITS 4
static const int prores_mb_limits[NUM_MB_LIMITS] = {
    1620, // up to 720x576
    2700, // up to 960x720
    6075, // up to 1440x1080
    9216, // up to 2048x1152
};

static const struct prores_profile {
    const char *full_name;
    uint32_t    tag;
    int         min_quant;
    int         max_quant;
    int         br_tab[NUM_MB_LIMITS];
126
    int         quant;
127
} prores_profile_info[5] = {
Kostya Shishkov's avatar
Kostya Shishkov committed
128 129 130 131 132 133
    {
        .full_name = "proxy",
        .tag       = MKTAG('a', 'p', 'c', 'o'),
        .min_quant = 4,
        .max_quant = 8,
        .br_tab    = { 300, 242, 220, 194 },
134
        .quant     = QUANT_MAT_PROXY,
Kostya Shishkov's avatar
Kostya Shishkov committed
135 136 137 138 139 140 141
    },
    {
        .full_name = "LT",
        .tag       = MKTAG('a', 'p', 'c', 's'),
        .min_quant = 1,
        .max_quant = 9,
        .br_tab    = { 720, 560, 490, 440 },
142
        .quant     = QUANT_MAT_LT,
Kostya Shishkov's avatar
Kostya Shishkov committed
143 144 145 146 147 148 149
    },
    {
        .full_name = "standard",
        .tag       = MKTAG('a', 'p', 'c', 'n'),
        .min_quant = 1,
        .max_quant = 6,
        .br_tab    = { 1050, 808, 710, 632 },
150
        .quant     = QUANT_MAT_STANDARD,
Kostya Shishkov's avatar
Kostya Shishkov committed
151 152 153 154 155 156 157
    },
    {
        .full_name = "high quality",
        .tag       = MKTAG('a', 'p', 'c', 'h'),
        .min_quant = 1,
        .max_quant = 6,
        .br_tab    = { 1566, 1216, 1070, 950 },
158
        .quant     = QUANT_MAT_HQ,
159 160 161 162 163 164 165 166
    },
    {
        .full_name = "4444",
        .tag       = MKTAG('a', 'p', '4', 'h'),
        .min_quant = 1,
        .max_quant = 6,
        .br_tab    = { 2350, 1828, 1600, 1425 },
        .quant     = QUANT_MAT_HQ,
Kostya Shishkov's avatar
Kostya Shishkov committed
167 168 169 170 171 172 173 174 175 176 177 178 179
    }
};

#define TRELLIS_WIDTH 16
#define SCORE_LIMIT   INT_MAX / 2

struct TrellisNode {
    int prev_node;
    int quant;
    int bits;
    int score;
};

180 181
#define MAX_STORED_Q 16

182
typedef struct ProresThreadData {
Diego Biurrun's avatar
Diego Biurrun committed
183
    DECLARE_ALIGNED(16, int16_t, blocks)[MAX_PLANES][64 * 4 * MAX_MBS_PER_SLICE];
184 185 186 187 188
    DECLARE_ALIGNED(16, uint16_t, emu_buf)[16 * 16];
    int16_t custom_q[64];
    struct TrellisNode *nodes;
} ProresThreadData;

Kostya Shishkov's avatar
Kostya Shishkov committed
189 190
typedef struct ProresContext {
    AVClass *class;
Diego Biurrun's avatar
Diego Biurrun committed
191
    DECLARE_ALIGNED(16, int16_t, blocks)[MAX_PLANES][64 * 4 * MAX_MBS_PER_SLICE];
Kostya Shishkov's avatar
Kostya Shishkov committed
192
    DECLARE_ALIGNED(16, uint16_t, emu_buf)[16*16];
193 194
    int16_t quants[MAX_STORED_Q][64];
    int16_t custom_q[64];
195
    const uint8_t *quant_mat;
196
    const uint8_t *scantable;
Kostya Shishkov's avatar
Kostya Shishkov committed
197

198 199 200
    void (* fdct)(DSPContext *dsp, const uint16_t *src,
                  int linesize, int16_t *block);
    DSPContext dsp;
Kostya Shishkov's avatar
Kostya Shishkov committed
201 202 203 204 205

    int mb_width, mb_height;
    int mbs_per_slice;
    int num_chroma_blocks, chroma_factor;
    int slices_width;
206 207 208
    int slices_per_picture;
    int pictures_per_frame; // 1 for progressive, 2 for interlaced
    int cur_picture_idx;
Kostya Shishkov's avatar
Kostya Shishkov committed
209 210
    int num_planes;
    int bits_per_mb;
211
    int force_quant;
212
    int alpha_bits;
Kostya Shishkov's avatar
Kostya Shishkov committed
213

214 215 216
    char *vendor;
    int quant_sel;

217
    int frame_size_upper_bound;
218

Kostya Shishkov's avatar
Kostya Shishkov committed
219 220 221 222
    int profile;
    const struct prores_profile *profile_info;

    int *slice_q;
223 224

    ProresThreadData *tdata;
Kostya Shishkov's avatar
Kostya Shishkov committed
225 226 227 228
} ProresContext;

static void get_slice_data(ProresContext *ctx, const uint16_t *src,
                           int linesize, int x, int y, int w, int h,
Diego Biurrun's avatar
Diego Biurrun committed
229
                           int16_t *blocks, uint16_t *emu_buf,
230
                           int mbs_per_slice, int blocks_per_mb, int is_chroma)
Kostya Shishkov's avatar
Kostya Shishkov committed
231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248
{
    const uint16_t *esrc;
    const int mb_width = 4 * blocks_per_mb;
    int elinesize;
    int i, j, k;

    for (i = 0; i < mbs_per_slice; i++, src += mb_width) {
        if (x >= w) {
            memset(blocks, 0, 64 * (mbs_per_slice - i) * blocks_per_mb
                              * sizeof(*blocks));
            return;
        }
        if (x + mb_width <= w && y + 16 <= h) {
            esrc      = src;
            elinesize = linesize;
        } else {
            int bw, bh, pix;

249 250
            esrc      = emu_buf;
            elinesize = 16 * sizeof(*emu_buf);
Kostya Shishkov's avatar
Kostya Shishkov committed
251 252 253 254 255

            bw = FFMIN(w - x, mb_width);
            bh = FFMIN(h - y, 16);

            for (j = 0; j < bh; j++) {
256
                memcpy(emu_buf + j * 16,
257
                       (const uint8_t*)src + j * linesize,
Kostya Shishkov's avatar
Kostya Shishkov committed
258
                       bw * sizeof(*src));
259
                pix = emu_buf[j * 16 + bw - 1];
Kostya Shishkov's avatar
Kostya Shishkov committed
260
                for (k = bw; k < mb_width; k++)
261
                    emu_buf[j * 16 + k] = pix;
Kostya Shishkov's avatar
Kostya Shishkov committed
262 263
            }
            for (; j < 16; j++)
264 265 266
                memcpy(emu_buf + j * 16,
                       emu_buf + (bh - 1) * 16,
                       mb_width * sizeof(*emu_buf));
Kostya Shishkov's avatar
Kostya Shishkov committed
267
        }
268
        if (!is_chroma) {
269
            ctx->fdct(&ctx->dsp, esrc, elinesize, blocks);
Kostya Shishkov's avatar
Kostya Shishkov committed
270
            blocks += 64;
271
            if (blocks_per_mb > 2) {
272
                ctx->fdct(&ctx->dsp, esrc + 8, elinesize, blocks);
273 274
                blocks += 64;
            }
275
            ctx->fdct(&ctx->dsp, esrc + elinesize * 4, elinesize, blocks);
Kostya Shishkov's avatar
Kostya Shishkov committed
276
            blocks += 64;
277
            if (blocks_per_mb > 2) {
278
                ctx->fdct(&ctx->dsp, esrc + elinesize * 4 + 8, elinesize, blocks);
279 280 281
                blocks += 64;
            }
        } else {
282
            ctx->fdct(&ctx->dsp, esrc, elinesize, blocks);
283
            blocks += 64;
284
            ctx->fdct(&ctx->dsp, esrc + elinesize * 4, elinesize, blocks);
285 286
            blocks += 64;
            if (blocks_per_mb > 2) {
287
                ctx->fdct(&ctx->dsp, esrc + 8, elinesize, blocks);
288
                blocks += 64;
289
                ctx->fdct(&ctx->dsp, esrc + elinesize * 4 + 8, elinesize, blocks);
290 291
                blocks += 64;
            }
Kostya Shishkov's avatar
Kostya Shishkov committed
292 293 294 295 296 297
        }

        x += mb_width;
    }
}

298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325
static void get_alpha_data(ProresContext *ctx, const uint16_t *src,
                           int linesize, int x, int y, int w, int h,
                           int16_t *blocks, int mbs_per_slice, int abits)
{
    const int slice_width = 16 * mbs_per_slice;
    int i, j, copy_w, copy_h;

    copy_w = FFMIN(w - x, slice_width);
    copy_h = FFMIN(h - y, 16);
    for (i = 0; i < copy_h; i++) {
        memcpy(blocks, src, copy_w * sizeof(*src));
        if (abits == 8)
            for (j = 0; j < copy_w; j++)
                blocks[j] >>= 2;
        else
            for (j = 0; j < copy_w; j++)
                blocks[j] = (blocks[j] << 6) | (blocks[j] >> 4);
        for (j = copy_w; j < slice_width; j++)
            blocks[j] = blocks[copy_w - 1];
        blocks += slice_width;
        src    += linesize >> 1;
    }
    for (; i < 16; i++) {
        memcpy(blocks, blocks - slice_width, slice_width * sizeof(*blocks));
        blocks += slice_width;
    }
}

Kostya Shishkov's avatar
Kostya Shishkov committed
326 327 328
/**
 * Write an unsigned rice/exp golomb codeword.
 */
329
static inline void encode_vlc_codeword(PutBitContext *pb, unsigned codebook, int val)
Kostya Shishkov's avatar
Kostya Shishkov committed
330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345
{
    unsigned int rice_order, exp_order, switch_bits, switch_val;
    int exponent;

    /* number of prefix bits to switch between Rice and expGolomb */
    switch_bits = (codebook & 3) + 1;
    rice_order  =  codebook >> 5;       /* rice code order */
    exp_order   = (codebook >> 2) & 7;  /* exp golomb code order */

    switch_val  = switch_bits << rice_order;

    if (val >= switch_val) {
        val -= switch_val - (1 << exp_order);
        exponent = av_log2(val);

        put_bits(pb, exponent - exp_order + switch_bits, 0);
346
        put_bits(pb, exponent + 1, val);
Kostya Shishkov's avatar
Kostya Shishkov committed
347 348 349 350 351 352 353 354 355 356 357 358 359 360
    } else {
        exponent = val >> rice_order;

        if (exponent)
            put_bits(pb, exponent, 0);
        put_bits(pb, 1, 1);
        if (rice_order)
            put_sbits(pb, rice_order, val);
    }
}

#define GET_SIGN(x)  ((x) >> 31)
#define MAKE_CODE(x) (((x) << 1) ^ GET_SIGN(x))

Diego Biurrun's avatar
Diego Biurrun committed
361
static void encode_dcs(PutBitContext *pb, int16_t *blocks,
Kostya Shishkov's avatar
Kostya Shishkov committed
362 363 364 365 366 367 368
                       int blocks_per_slice, int scale)
{
    int i;
    int codebook = 3, code, dc, prev_dc, delta, sign, new_sign;

    prev_dc = (blocks[0] - 0x4000) / scale;
    encode_vlc_codeword(pb, FIRST_DC_CB, MAKE_CODE(prev_dc));
369
    sign     = 0;
Kostya Shishkov's avatar
Kostya Shishkov committed
370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386
    codebook = 3;
    blocks  += 64;

    for (i = 1; i < blocks_per_slice; i++, blocks += 64) {
        dc       = (blocks[0] - 0x4000) / scale;
        delta    = dc - prev_dc;
        new_sign = GET_SIGN(delta);
        delta    = (delta ^ sign) - sign;
        code     = MAKE_CODE(delta);
        encode_vlc_codeword(pb, ff_prores_dc_codebook[codebook], code);
        codebook = (code + (code & 1)) >> 1;
        codebook = FFMIN(codebook, 3);
        sign     = new_sign;
        prev_dc  = dc;
    }
}

Diego Biurrun's avatar
Diego Biurrun committed
387
static void encode_acs(PutBitContext *pb, int16_t *blocks,
Kostya Shishkov's avatar
Kostya Shishkov committed
388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422
                       int blocks_per_slice,
                       int plane_size_factor,
                       const uint8_t *scan, const int16_t *qmat)
{
    int idx, i;
    int run, level, run_cb, lev_cb;
    int max_coeffs, abs_level;

    max_coeffs = blocks_per_slice << 6;
    run_cb     = ff_prores_run_to_cb_index[4];
    lev_cb     = ff_prores_lev_to_cb_index[2];
    run        = 0;

    for (i = 1; i < 64; i++) {
        for (idx = scan[i]; idx < max_coeffs; idx += 64) {
            level = blocks[idx] / qmat[scan[i]];
            if (level) {
                abs_level = FFABS(level);
                encode_vlc_codeword(pb, ff_prores_ac_codebook[run_cb], run);
                encode_vlc_codeword(pb, ff_prores_ac_codebook[lev_cb],
                                    abs_level - 1);
                put_sbits(pb, 1, GET_SIGN(level));

                run_cb = ff_prores_run_to_cb_index[FFMIN(run, 15)];
                lev_cb = ff_prores_lev_to_cb_index[FFMIN(abs_level, 9)];
                run    = 0;
            } else {
                run++;
            }
        }
    }
}

static int encode_slice_plane(ProresContext *ctx, PutBitContext *pb,
                              const uint16_t *src, int linesize,
Diego Biurrun's avatar
Diego Biurrun committed
423
                              int mbs_per_slice, int16_t *blocks,
Kostya Shishkov's avatar
Kostya Shishkov committed
424 425 426 427 428 429 430 431 432 433
                              int blocks_per_mb, int plane_size_factor,
                              const int16_t *qmat)
{
    int blocks_per_slice, saved_pos;

    saved_pos = put_bits_count(pb);
    blocks_per_slice = mbs_per_slice * blocks_per_mb;

    encode_dcs(pb, blocks, blocks_per_slice, qmat[0]);
    encode_acs(pb, blocks, blocks_per_slice, plane_size_factor,
434
               ctx->scantable, qmat);
Kostya Shishkov's avatar
Kostya Shishkov committed
435 436 437 438 439
    flush_put_bits(pb);

    return (put_bits_count(pb) - saved_pos) >> 3;
}

440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506
static void put_alpha_diff(PutBitContext *pb, int cur, int prev, int abits)
{
    const int mask  = (1 << abits) - 1;
    const int dbits = (abits == 8) ? 4 : 7;
    const int dsize = 1 << dbits - 1;
    int diff = cur - prev;

    diff &= mask;
    if (diff >= (1 << abits) - dsize)
        diff -= 1 << abits;
    if (diff < -dsize || diff > dsize || !diff) {
        put_bits(pb, 1, 1);
        put_bits(pb, abits, diff);
    } else {
        put_bits(pb, 1, 0);
        put_bits(pb, dbits - 1, FFABS(diff) - 1);
        put_bits(pb, 1, diff < 0);
    }
}

static void put_alpha_run(PutBitContext *pb, int run)
{
    if (run) {
        put_bits(pb, 1, 0);
        if (run < 0x10)
            put_bits(pb, 4, run);
        else
            put_bits(pb, 15, run);
    } else {
        put_bits(pb, 1, 1);
    }
}

// todo alpha quantisation for high quants
static int encode_alpha_plane(ProresContext *ctx, PutBitContext *pb,
                              const uint16_t *src, int linesize,
                              int mbs_per_slice, uint16_t *blocks,
                              int quant)
{
    const int abits = ctx->alpha_bits;
    const int mask  = (1 << abits) - 1;
    const int num_coeffs = mbs_per_slice * 256;
    int saved_pos = put_bits_count(pb);
    int prev = mask, cur;
    int idx = 0;
    int run = 0;

    cur = blocks[idx++];
    put_alpha_diff(pb, cur, prev, abits);
    prev = cur;
    do {
        cur = blocks[idx++];
        if (cur != prev) {
            put_alpha_run (pb, run);
            put_alpha_diff(pb, cur, prev, abits);
            prev = cur;
            run  = 0;
        } else {
            run++;
        }
    } while (idx < num_coeffs);
    if (run)
        put_alpha_run(pb, run);
    flush_put_bits(pb);
    return (put_bits_count(pb) - saved_pos) >> 3;
}

Kostya Shishkov's avatar
Kostya Shishkov committed
507 508 509 510 511 512 513 514 515 516
static int encode_slice(AVCodecContext *avctx, const AVFrame *pic,
                        PutBitContext *pb,
                        int sizes[4], int x, int y, int quant,
                        int mbs_per_slice)
{
    ProresContext *ctx = avctx->priv_data;
    int i, xp, yp;
    int total_size = 0;
    const uint16_t *src;
    int slice_width_factor = av_log2(mbs_per_slice);
517
    int num_cblocks, pwidth, linesize, line_add;
Kostya Shishkov's avatar
Kostya Shishkov committed
518
    int plane_factor, is_chroma;
519 520
    uint16_t *qmat;

521 522 523 524 525
    if (ctx->pictures_per_frame == 1)
        line_add = 0;
    else
        line_add = ctx->cur_picture_idx ^ !pic->top_field_first;

526 527 528
    if (ctx->force_quant) {
        qmat = ctx->quants[0];
    } else if (quant < MAX_STORED_Q) {
529 530 531 532
        qmat = ctx->quants[quant];
    } else {
        qmat = ctx->custom_q;
        for (i = 0; i < 64; i++)
533
            qmat[i] = ctx->quant_mat[i] * quant;
534
    }
Kostya Shishkov's avatar
Kostya Shishkov committed
535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552

    for (i = 0; i < ctx->num_planes; i++) {
        is_chroma    = (i == 1 || i == 2);
        plane_factor = slice_width_factor + 2;
        if (is_chroma)
            plane_factor += ctx->chroma_factor - 3;
        if (!is_chroma || ctx->chroma_factor == CFACTOR_Y444) {
            xp          = x << 4;
            yp          = y << 4;
            num_cblocks = 4;
            pwidth      = avctx->width;
        } else {
            xp          = x << 3;
            yp          = y << 4;
            num_cblocks = 2;
            pwidth      = avctx->width >> 1;
        }

553
        linesize = pic->linesize[i] * ctx->pictures_per_frame;
554 555
        src = (const uint16_t*)(pic->data[i] + yp * linesize +
                                line_add * pic->linesize[i]) + xp;
556

557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573
        if (i < 3) {
            get_slice_data(ctx, src, linesize, xp, yp,
                           pwidth, avctx->height / ctx->pictures_per_frame,
                           ctx->blocks[0], ctx->emu_buf,
                           mbs_per_slice, num_cblocks, is_chroma);
            sizes[i] = encode_slice_plane(ctx, pb, src, linesize,
                                          mbs_per_slice, ctx->blocks[0],
                                          num_cblocks, plane_factor,
                                          qmat);
        } else {
            get_alpha_data(ctx, src, linesize, xp, yp,
                           pwidth, avctx->height / ctx->pictures_per_frame,
                           ctx->blocks[0], mbs_per_slice, ctx->alpha_bits);
            sizes[i] = encode_alpha_plane(ctx, pb, src, linesize,
                                          mbs_per_slice, ctx->blocks[0],
                                          quant);
        }
Kostya Shishkov's avatar
Kostya Shishkov committed
574 575 576 577 578
        total_size += sizes[i];
    }
    return total_size;
}

579
static inline int estimate_vlc(unsigned codebook, int val)
Kostya Shishkov's avatar
Kostya Shishkov committed
580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600
{
    unsigned int rice_order, exp_order, switch_bits, switch_val;
    int exponent;

    /* number of prefix bits to switch between Rice and expGolomb */
    switch_bits = (codebook & 3) + 1;
    rice_order  =  codebook >> 5;       /* rice code order */
    exp_order   = (codebook >> 2) & 7;  /* exp golomb code order */

    switch_val  = switch_bits << rice_order;

    if (val >= switch_val) {
        val -= switch_val - (1 << exp_order);
        exponent = av_log2(val);

        return exponent * 2 - exp_order + switch_bits + 1;
    } else {
        return (val >> rice_order) + rice_order + 1;
    }
}

Diego Biurrun's avatar
Diego Biurrun committed
601
static int estimate_dcs(int *error, int16_t *blocks, int blocks_per_slice,
Kostya Shishkov's avatar
Kostya Shishkov committed
602 603 604 605 606 607 608 609
                        int scale)
{
    int i;
    int codebook = 3, code, dc, prev_dc, delta, sign, new_sign;
    int bits;

    prev_dc  = (blocks[0] - 0x4000) / scale;
    bits     = estimate_vlc(FIRST_DC_CB, MAKE_CODE(prev_dc));
610
    sign     = 0;
Kostya Shishkov's avatar
Kostya Shishkov committed
611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631
    codebook = 3;
    blocks  += 64;
    *error  += FFABS(blocks[0] - 0x4000) % scale;

    for (i = 1; i < blocks_per_slice; i++, blocks += 64) {
        dc       = (blocks[0] - 0x4000) / scale;
        *error  += FFABS(blocks[0] - 0x4000) % scale;
        delta    = dc - prev_dc;
        new_sign = GET_SIGN(delta);
        delta    = (delta ^ sign) - sign;
        code     = MAKE_CODE(delta);
        bits    += estimate_vlc(ff_prores_dc_codebook[codebook], code);
        codebook = (code + (code & 1)) >> 1;
        codebook = FFMIN(codebook, 3);
        sign     = new_sign;
        prev_dc  = dc;
    }

    return bits;
}

Diego Biurrun's avatar
Diego Biurrun committed
632
static int estimate_acs(int *error, int16_t *blocks, int blocks_per_slice,
Kostya Shishkov's avatar
Kostya Shishkov committed
633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671
                        int plane_size_factor,
                        const uint8_t *scan, const int16_t *qmat)
{
    int idx, i;
    int run, level, run_cb, lev_cb;
    int max_coeffs, abs_level;
    int bits = 0;

    max_coeffs = blocks_per_slice << 6;
    run_cb     = ff_prores_run_to_cb_index[4];
    lev_cb     = ff_prores_lev_to_cb_index[2];
    run        = 0;

    for (i = 1; i < 64; i++) {
        for (idx = scan[i]; idx < max_coeffs; idx += 64) {
            level   = blocks[idx] / qmat[scan[i]];
            *error += FFABS(blocks[idx]) % qmat[scan[i]];
            if (level) {
                abs_level = FFABS(level);
                bits += estimate_vlc(ff_prores_ac_codebook[run_cb], run);
                bits += estimate_vlc(ff_prores_ac_codebook[lev_cb],
                                     abs_level - 1) + 1;

                run_cb = ff_prores_run_to_cb_index[FFMIN(run, 15)];
                lev_cb = ff_prores_lev_to_cb_index[FFMIN(abs_level, 9)];
                run    = 0;
            } else {
                run++;
            }
        }
    }

    return bits;
}

static int estimate_slice_plane(ProresContext *ctx, int *error, int plane,
                                const uint16_t *src, int linesize,
                                int mbs_per_slice,
                                int blocks_per_mb, int plane_size_factor,
672
                                const int16_t *qmat, ProresThreadData *td)
Kostya Shishkov's avatar
Kostya Shishkov committed
673 674 675 676 677 678
{
    int blocks_per_slice;
    int bits;

    blocks_per_slice = mbs_per_slice * blocks_per_mb;

679 680
    bits  = estimate_dcs(error, td->blocks[plane], blocks_per_slice, qmat[0]);
    bits += estimate_acs(error, td->blocks[plane], blocks_per_slice,
681
                         plane_size_factor, ctx->scantable, qmat);
Kostya Shishkov's avatar
Kostya Shishkov committed
682 683 684 685

    return FFALIGN(bits, 8);
}

686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745
static int est_alpha_diff(int cur, int prev, int abits)
{
    const int mask  = (1 << abits) - 1;
    const int dbits = (abits == 8) ? 4 : 7;
    const int dsize = 1 << dbits - 1;
    int diff = cur - prev;

    diff &= mask;
    if (diff >= (1 << abits) - dsize)
        diff -= 1 << abits;
    if (diff < -dsize || diff > dsize || !diff)
        return abits + 1;
    else
        return dbits + 1;
}

static int estimate_alpha_plane(ProresContext *ctx, int *error,
                                const uint16_t *src, int linesize,
                                int mbs_per_slice, int quant,
                                int16_t *blocks)
{
    const int abits = ctx->alpha_bits;
    const int mask  = (1 << abits) - 1;
    const int num_coeffs = mbs_per_slice * 256;
    int prev = mask, cur;
    int idx = 0;
    int run = 0;
    int bits;

    *error = 0;
    cur = blocks[idx++];
    bits = est_alpha_diff(cur, prev, abits);
    prev = cur;
    do {
        cur = blocks[idx++];
        if (cur != prev) {
            if (!run)
                bits++;
            else if (run < 0x10)
                bits += 4;
            else
                bits += 15;
            bits += est_alpha_diff(cur, prev, abits);
            prev = cur;
            run  = 0;
        } else {
            run++;
        }
    } while (idx < num_coeffs);

    if (run) {
        if (run < 0x10)
            bits += 4;
        else
            bits += 15;
    }

    return bits;
}

Kostya Shishkov's avatar
Kostya Shishkov committed
746
static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic,
747 748
                            int trellis_node, int x, int y, int mbs_per_slice,
                            ProresThreadData *td)
Kostya Shishkov's avatar
Kostya Shishkov committed
749 750 751 752 753 754 755 756 757 758 759 760
{
    ProresContext *ctx = avctx->priv_data;
    int i, q, pq, xp, yp;
    const uint16_t *src;
    int slice_width_factor = av_log2(mbs_per_slice);
    int num_cblocks[MAX_PLANES], pwidth;
    int plane_factor[MAX_PLANES], is_chroma[MAX_PLANES];
    const int min_quant = ctx->profile_info->min_quant;
    const int max_quant = ctx->profile_info->max_quant;
    int error, bits, bits_limit;
    int mbs, prev, cur, new_score;
    int slice_bits[TRELLIS_WIDTH], slice_score[TRELLIS_WIDTH];
761 762
    int overquant;
    uint16_t *qmat;
763
    int linesize[4], line_add;
Kostya Shishkov's avatar
Kostya Shishkov committed
764

765 766 767 768
    if (ctx->pictures_per_frame == 1)
        line_add = 0;
    else
        line_add = ctx->cur_picture_idx ^ !pic->top_field_first;
Kostya Shishkov's avatar
Kostya Shishkov committed
769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787
    mbs = x + mbs_per_slice;

    for (i = 0; i < ctx->num_planes; i++) {
        is_chroma[i]    = (i == 1 || i == 2);
        plane_factor[i] = slice_width_factor + 2;
        if (is_chroma[i])
            plane_factor[i] += ctx->chroma_factor - 3;
        if (!is_chroma[i] || ctx->chroma_factor == CFACTOR_Y444) {
            xp             = x << 4;
            yp             = y << 4;
            num_cblocks[i] = 4;
            pwidth         = avctx->width;
        } else {
            xp             = x << 3;
            yp             = y << 4;
            num_cblocks[i] = 2;
            pwidth         = avctx->width >> 1;
        }

788
        linesize[i] = pic->linesize[i] * ctx->pictures_per_frame;
789 790
        src = (const uint16_t*)(pic->data[i] + yp * linesize[i] +
                                line_add * pic->linesize[i]) + xp;
791

792 793 794 795 796 797 798 799 800 801
        if (i < 3) {
            get_slice_data(ctx, src, linesize[i], xp, yp,
                           pwidth, avctx->height / ctx->pictures_per_frame,
                           td->blocks[i], td->emu_buf,
                           mbs_per_slice, num_cblocks[i], is_chroma[i]);
        } else {
            get_alpha_data(ctx, src, linesize[i], xp, yp,
                           pwidth, avctx->height / ctx->pictures_per_frame,
                           td->blocks[i], mbs_per_slice, ctx->alpha_bits);
        }
Kostya Shishkov's avatar
Kostya Shishkov committed
802 803
    }

804
    for (q = min_quant; q < max_quant + 2; q++) {
805 806
        td->nodes[trellis_node + q].prev_node = -1;
        td->nodes[trellis_node + q].quant     = q;
Kostya Shishkov's avatar
Kostya Shishkov committed
807 808 809 810 811 812
    }

    // todo: maybe perform coarser quantising to fit into frame size when needed
    for (q = min_quant; q <= max_quant; q++) {
        bits  = 0;
        error = 0;
813
        for (i = 0; i < ctx->num_planes - !!ctx->alpha_bits; i++) {
Kostya Shishkov's avatar
Kostya Shishkov committed
814
            bits += estimate_slice_plane(ctx, &error, i,
815
                                         src, linesize[i],
Kostya Shishkov's avatar
Kostya Shishkov committed
816 817
                                         mbs_per_slice,
                                         num_cblocks[i], plane_factor[i],
818
                                         ctx->quants[q], td);
Kostya Shishkov's avatar
Kostya Shishkov committed
819
        }
820 821 822
        if (ctx->alpha_bits)
            bits += estimate_alpha_plane(ctx, &error, src, linesize[3],
                                         mbs_per_slice, q, td->blocks[3]);
Kostya Shishkov's avatar
Kostya Shishkov committed
823 824 825 826 827 828 829
        if (bits > 65000 * 8) {
            error = SCORE_LIMIT;
            break;
        }
        slice_bits[q]  = bits;
        slice_score[q] = error;
    }
830 831 832 833 834 835 836 837 838 839 840
    if (slice_bits[max_quant] <= ctx->bits_per_mb * mbs_per_slice) {
        slice_bits[max_quant + 1]  = slice_bits[max_quant];
        slice_score[max_quant + 1] = slice_score[max_quant] + 1;
        overquant = max_quant;
    } else {
        for (q = max_quant + 1; q < 128; q++) {
            bits  = 0;
            error = 0;
            if (q < MAX_STORED_Q) {
                qmat = ctx->quants[q];
            } else {
841
                qmat = td->custom_q;
842
                for (i = 0; i < 64; i++)
843
                    qmat[i] = ctx->quant_mat[i] * q;
844
            }
845
            for (i = 0; i < ctx->num_planes - !!ctx->alpha_bits; i++) {
846
                bits += estimate_slice_plane(ctx, &error, i,
847
                                             src, linesize[i],
848 849
                                             mbs_per_slice,
                                             num_cblocks[i], plane_factor[i],
850
                                             qmat, td);
851
            }
852 853 854
            if (ctx->alpha_bits)
                bits += estimate_alpha_plane(ctx, &error, src, linesize[3],
                                             mbs_per_slice, q, td->blocks[3]);
855 856 857 858 859 860 861 862
            if (bits <= ctx->bits_per_mb * mbs_per_slice)
                break;
        }

        slice_bits[max_quant + 1]  = bits;
        slice_score[max_quant + 1] = error;
        overquant = q;
    }
863
    td->nodes[trellis_node + max_quant + 1].quant = overquant;
Kostya Shishkov's avatar
Kostya Shishkov committed
864 865

    bits_limit = mbs * ctx->bits_per_mb;
866
    for (pq = min_quant; pq < max_quant + 2; pq++) {
Kostya Shishkov's avatar
Kostya Shishkov committed
867 868
        prev = trellis_node - TRELLIS_WIDTH + pq;

869
        for (q = min_quant; q < max_quant + 2; q++) {
Kostya Shishkov's avatar
Kostya Shishkov committed
870 871
            cur = trellis_node + q;

872
            bits  = td->nodes[prev].bits + slice_bits[q];
Kostya Shishkov's avatar
Kostya Shishkov committed
873 874 875 876
            error = slice_score[q];
            if (bits > bits_limit)
                error = SCORE_LIMIT;

877 878
            if (td->nodes[prev].score < SCORE_LIMIT && error < SCORE_LIMIT)
                new_score = td->nodes[prev].score + error;
Kostya Shishkov's avatar
Kostya Shishkov committed
879 880
            else
                new_score = SCORE_LIMIT;
881 882
            if (td->nodes[cur].prev_node == -1 ||
                td->nodes[cur].score >= new_score) {
Kostya Shishkov's avatar
Kostya Shishkov committed
883

884 885 886
                td->nodes[cur].bits      = bits;
                td->nodes[cur].score     = new_score;
                td->nodes[cur].prev_node = prev;
Kostya Shishkov's avatar
Kostya Shishkov committed
887 888 889 890
            }
        }
    }

891
    error = td->nodes[trellis_node + min_quant].score;
Kostya Shishkov's avatar
Kostya Shishkov committed
892
    pq    = trellis_node + min_quant;
893
    for (q = min_quant + 1; q < max_quant + 2; q++) {
894 895
        if (td->nodes[trellis_node + q].score <= error) {
            error = td->nodes[trellis_node + q].score;
Kostya Shishkov's avatar
Kostya Shishkov committed
896 897 898 899 900 901 902
            pq    = trellis_node + q;
        }
    }

    return pq;
}

903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926
static int find_quant_thread(AVCodecContext *avctx, void *arg,
                             int jobnr, int threadnr)
{
    ProresContext *ctx = avctx->priv_data;
    ProresThreadData *td = ctx->tdata + threadnr;
    int mbs_per_slice = ctx->mbs_per_slice;
    int x, y = jobnr, mb, q = 0;

    for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) {
        while (ctx->mb_width - x < mbs_per_slice)
            mbs_per_slice >>= 1;
        q = find_slice_quant(avctx, avctx->coded_frame,
                             (mb + 1) * TRELLIS_WIDTH, x, y,
                             mbs_per_slice, td);
    }

    for (x = ctx->slices_width - 1; x >= 0; x--) {
        ctx->slice_q[x + y * ctx->slices_width] = td->nodes[q].quant;
        q = td->nodes[q].prev_node;
    }

    return 0;
}

Kostya Shishkov's avatar
Kostya Shishkov committed
927 928 929 930 931 932 933 934 935 936 937 938
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                        const AVFrame *pic, int *got_packet)
{
    ProresContext *ctx = avctx->priv_data;
    uint8_t *orig_buf, *buf, *slice_hdr, *slice_sizes, *tmp;
    uint8_t *picture_size_pos;
    PutBitContext pb;
    int x, y, i, mb, q = 0;
    int sizes[4] = { 0 };
    int slice_hdr_size = 2 + 2 * (ctx->num_planes - 1);
    int frame_size, picture_size, slice_size;
    int pkt_size, ret;
939
    uint8_t frame_flags;
Kostya Shishkov's avatar
Kostya Shishkov committed
940 941 942 943 944

    *avctx->coded_frame           = *pic;
    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
    avctx->coded_frame->key_frame = 1;

945
    pkt_size = ctx->frame_size_upper_bound + FF_MIN_BUFFER_SIZE;
Kostya Shishkov's avatar
Kostya Shishkov committed
946

947
    if ((ret = ff_alloc_packet2(avctx, pkt, pkt_size)) < 0)
Kostya Shishkov's avatar
Kostya Shishkov committed
948 949 950 951 952 953 954 955 956 957 958 959 960
        return ret;

    orig_buf = pkt->data;

    // frame atom
    orig_buf += 4;                              // frame size
    bytestream_put_be32  (&orig_buf, FRAME_ID); // frame container ID
    buf = orig_buf;

    // frame header
    tmp = buf;
    buf += 2;                                   // frame header size will be stored here
    bytestream_put_be16  (&buf, 0);             // version 1
961
    bytestream_put_buffer(&buf, ctx->vendor, 4);
Kostya Shishkov's avatar
Kostya Shishkov committed
962 963
    bytestream_put_be16  (&buf, avctx->width);
    bytestream_put_be16  (&buf, avctx->height);
964 965

    frame_flags = ctx->chroma_factor << 6;
966
    if (avctx->flags & CODEC_FLAG_INTERLACED_DCT)
967 968 969
        frame_flags |= pic->top_field_first ? 0x04 : 0x08;
    bytestream_put_byte  (&buf, frame_flags);

Kostya Shishkov's avatar
Kostya Shishkov committed
970
    bytestream_put_byte  (&buf, 0);             // reserved
971 972 973
    bytestream_put_byte  (&buf, avctx->color_primaries);
    bytestream_put_byte  (&buf, avctx->color_trc);
    bytestream_put_byte  (&buf, avctx->colorspace);
974
    bytestream_put_byte  (&buf, 0x40 | (ctx->alpha_bits >> 3));
Kostya Shishkov's avatar
Kostya Shishkov committed
975
    bytestream_put_byte  (&buf, 0);             // reserved
976 977 978 979 980 981 982 983 984 985 986
    if (ctx->quant_sel != QUANT_MAT_DEFAULT) {
        bytestream_put_byte  (&buf, 0x03);      // matrix flags - both matrices are present
        // luma quantisation matrix
        for (i = 0; i < 64; i++)
            bytestream_put_byte(&buf, ctx->quant_mat[i]);
        // chroma quantisation matrix
        for (i = 0; i < 64; i++)
            bytestream_put_byte(&buf, ctx->quant_mat[i]);
    } else {
        bytestream_put_byte  (&buf, 0x00);      // matrix flags - default matrices are used
    }
Kostya Shishkov's avatar
Kostya Shishkov committed
987 988
    bytestream_put_be16  (&tmp, buf - orig_buf); // write back frame header size

989 990 991
    for (ctx->cur_picture_idx = 0;
         ctx->cur_picture_idx < ctx->pictures_per_frame;
         ctx->cur_picture_idx++) {
992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009
        // picture header
        picture_size_pos = buf + 1;
        bytestream_put_byte  (&buf, 0x40);          // picture header size (in bits)
        buf += 4;                                   // picture data size will be stored here
        bytestream_put_be16  (&buf, ctx->slices_per_picture);
        bytestream_put_byte  (&buf, av_log2(ctx->mbs_per_slice) << 4); // slice width and height in MBs

        // seek table - will be filled during slice encoding
        slice_sizes = buf;
        buf += ctx->slices_per_picture * 2;

        // slices
        if (!ctx->force_quant) {
            ret = avctx->execute2(avctx, find_quant_thread, NULL, NULL,
                                  ctx->mb_height);
            if (ret)
                return ret;
        }
Kostya Shishkov's avatar
Kostya Shishkov committed
1010

1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033
        for (y = 0; y < ctx->mb_height; y++) {
            int mbs_per_slice = ctx->mbs_per_slice;
            for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) {
                q = ctx->force_quant ? ctx->force_quant
                                     : ctx->slice_q[mb + y * ctx->slices_width];

                while (ctx->mb_width - x < mbs_per_slice)
                    mbs_per_slice >>= 1;

                bytestream_put_byte(&buf, slice_hdr_size << 3);
                slice_hdr = buf;
                buf += slice_hdr_size - 1;
                init_put_bits(&pb, buf, (pkt_size - (buf - orig_buf)) * 8);
                encode_slice(avctx, pic, &pb, sizes, x, y, q, mbs_per_slice);

                bytestream_put_byte(&slice_hdr, q);
                slice_size = slice_hdr_size + sizes[ctx->num_planes - 1];
                for (i = 0; i < ctx->num_planes - 1; i++) {
                    bytestream_put_be16(&slice_hdr, sizes[i]);
                    slice_size += sizes[i];
                }
                bytestream_put_be16(&slice_sizes, slice_size);
                buf += slice_size - slice_hdr_size;
Kostya Shishkov's avatar
Kostya Shishkov committed
1034 1035
            }
        }
1036 1037 1038

        picture_size = buf - (picture_size_pos - 1);
        bytestream_put_be32(&picture_size_pos, picture_size);
Kostya Shishkov's avatar
Kostya Shishkov committed
1039 1040 1041 1042 1043
    }

    orig_buf -= 8;
    frame_size = buf - orig_buf;
    bytestream_put_be32(&orig_buf, frame_size);
1044

Kostya Shishkov's avatar
Kostya Shishkov committed
1045 1046 1047 1048 1049 1050 1051 1052 1053 1054
    pkt->size   = frame_size;
    pkt->flags |= AV_PKT_FLAG_KEY;
    *got_packet = 1;

    return 0;
}

static av_cold int encode_close(AVCodecContext *avctx)
{
    ProresContext *ctx = avctx->priv_data;
1055
    int i;
Kostya Shishkov's avatar
Kostya Shishkov committed
1056 1057 1058

    av_freep(&avctx->coded_frame);

1059 1060 1061 1062 1063
    if (ctx->tdata) {
        for (i = 0; i < avctx->thread_count; i++)
            av_free(ctx->tdata[i].nodes);
    }
    av_freep(&ctx->tdata);
Kostya Shishkov's avatar
Kostya Shishkov committed
1064 1065 1066 1067 1068
    av_freep(&ctx->slice_q);

    return 0;
}

1069 1070
static void prores_fdct(DSPContext *dsp, const uint16_t *src,
                        int linesize, int16_t *block)
1071 1072 1073 1074 1075 1076 1077 1078 1079
{
    int x, y;
    const uint16_t *tsrc = src;

    for (y = 0; y < 8; y++) {
        for (x = 0; x < 8; x++)
            block[y * 8 + x] = tsrc[x];
        tsrc += linesize >> 1;
    }
1080
    dsp->fdct(block);
1081 1082
}

Kostya Shishkov's avatar
Kostya Shishkov committed
1083 1084 1085 1086 1087 1088
static av_cold int encode_init(AVCodecContext *avctx)
{
    ProresContext *ctx = avctx->priv_data;
    int mps;
    int i, j;
    int min_quant, max_quant;
1089
    int interlaced = !!(avctx->flags & CODEC_FLAG_INTERLACED_DCT);
Kostya Shishkov's avatar
Kostya Shishkov committed
1090 1091

    avctx->bits_per_raw_sample = 10;
1092
    avctx->coded_frame = av_frame_alloc();
Kostya Shishkov's avatar
Kostya Shishkov committed
1093 1094 1095
    if (!avctx->coded_frame)
        return AVERROR(ENOMEM);

1096
    ctx->fdct      = prores_fdct;
1097 1098
    ctx->scantable = interlaced ? ff_prores_interlaced_scan
                                : ff_prores_progressive_scan;
1099
    ff_dsputil_init(&ctx->dsp, avctx);
Kostya Shishkov's avatar
Kostya Shishkov committed
1100 1101 1102 1103 1104 1105 1106

    mps = ctx->mbs_per_slice;
    if (mps & (mps - 1)) {
        av_log(avctx, AV_LOG_ERROR,
               "there should be an integer power of two MBs per slice\n");
        return AVERROR(EINVAL);
    }
1107 1108 1109 1110 1111 1112 1113 1114
    if (av_pix_fmt_desc_get(avctx->pix_fmt)->flags & AV_PIX_FMT_FLAG_ALPHA) {
        if (ctx->alpha_bits & 7) {
            av_log(avctx, AV_LOG_ERROR, "alpha bits should be 0, 8 or 16\n");
            return AVERROR(EINVAL);
        }
    } else {
        ctx->alpha_bits = 0;
    }
Kostya Shishkov's avatar
Kostya Shishkov committed
1115

1116
    ctx->chroma_factor = avctx->pix_fmt == AV_PIX_FMT_YUV422P10
Kostya Shishkov's avatar
Kostya Shishkov committed
1117 1118 1119
                         ? CFACTOR_Y422
                         : CFACTOR_Y444;
    ctx->profile_info  = prores_profile_info + ctx->profile;
1120
    ctx->num_planes    = 3 + !!ctx->alpha_bits;
Kostya Shishkov's avatar
Kostya Shishkov committed
1121 1122

    ctx->mb_width      = FFALIGN(avctx->width,  16) >> 4;
1123 1124 1125 1126 1127 1128

    if (interlaced)
        ctx->mb_height = FFALIGN(avctx->height, 32) >> 5;
    else
        ctx->mb_height = FFALIGN(avctx->height, 16) >> 4;

Kostya Shishkov's avatar
Kostya Shishkov committed
1129 1130
    ctx->slices_width  = ctx->mb_width / mps;
    ctx->slices_width += av_popcount(ctx->mb_width - ctx->slices_width * mps);
1131 1132
    ctx->slices_per_picture = ctx->mb_height * ctx->slices_width;
    ctx->pictures_per_frame = 1 + interlaced;
Kostya Shishkov's avatar
Kostya Shishkov committed
1133

1134 1135 1136 1137 1138 1139 1140 1141 1142 1143
    if (ctx->quant_sel == -1)
        ctx->quant_mat = prores_quant_matrices[ctx->profile_info->quant];
    else
        ctx->quant_mat = prores_quant_matrices[ctx->quant_sel];

    if (strlen(ctx->vendor) != 4) {
        av_log(avctx, AV_LOG_ERROR, "vendor ID should be 4 bytes\n");
        return AVERROR_INVALIDDATA;
    }

1144 1145 1146 1147
    ctx->force_quant = avctx->global_quality / FF_QP2LAMBDA;
    if (!ctx->force_quant) {
        if (!ctx->bits_per_mb) {
            for (i = 0; i < NUM_MB_LIMITS - 1; i++)
1148 1149
                if (prores_mb_limits[i] >= ctx->mb_width * ctx->mb_height *
                                           ctx->pictures_per_frame)
1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163
                    break;
            ctx->bits_per_mb   = ctx->profile_info->br_tab[i];
        } else if (ctx->bits_per_mb < 128) {
            av_log(avctx, AV_LOG_ERROR, "too few bits per MB, please set at least 128\n");
            return AVERROR_INVALIDDATA;
        }

        min_quant = ctx->profile_info->min_quant;
        max_quant = ctx->profile_info->max_quant;
        for (i = min_quant; i < MAX_STORED_Q; i++) {
            for (j = 0; j < 64; j++)
                ctx->quants[i][j] = ctx->quant_mat[j] * i;
        }

1164
        ctx->slice_q = av_malloc(ctx->slices_per_picture * sizeof(*ctx->slice_q));
1165
        if (!ctx->slice_q) {
1166 1167 1168 1169
            encode_close(avctx);
            return AVERROR(ENOMEM);
        }

1170 1171
        ctx->tdata = av_mallocz(avctx->thread_count * sizeof(*ctx->tdata));
        if (!ctx->tdata) {
1172 1173 1174
            encode_close(avctx);
            return AVERROR(ENOMEM);
        }
1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189

        for (j = 0; j < avctx->thread_count; j++) {
            ctx->tdata[j].nodes = av_malloc((ctx->slices_width + 1)
                                            * TRELLIS_WIDTH
                                            * sizeof(*ctx->tdata->nodes));
            if (!ctx->tdata[j].nodes) {
                encode_close(avctx);
                return AVERROR(ENOMEM);
            }
            for (i = min_quant; i < max_quant + 2; i++) {
                ctx->tdata[j].nodes[i].prev_node = -1;
                ctx->tdata[j].nodes[i].bits      = 0;
                ctx->tdata[j].nodes[i].score     = 0;
            }
        }
1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207
    } else {
        int ls = 0;

        if (ctx->force_quant > 64) {
            av_log(avctx, AV_LOG_ERROR, "too large quantiser, maximum is 64\n");
            return AVERROR_INVALIDDATA;
        }

        for (j = 0; j < 64; j++) {
            ctx->quants[0][j] = ctx->quant_mat[j] * ctx->force_quant;
            ls += av_log2((1 << 11)  / ctx->quants[0][j]) * 2 + 1;
        }

        ctx->bits_per_mb = ls * 8;
        if (ctx->chroma_factor == CFACTOR_Y444)
            ctx->bits_per_mb += ls * 4;
        if (ctx->num_planes == 4)
            ctx->bits_per_mb += ls * 4;
1208
    }
Kostya Shishkov's avatar
Kostya Shishkov committed
1209

1210 1211 1212
    ctx->frame_size_upper_bound = ctx->pictures_per_frame *
                                  ctx->slices_per_picture *
                                  (2 + 2 * ctx->num_planes +
1213 1214
                                   (mps * ctx->bits_per_mb) / 8)
                                  + 200;
1215

Kostya Shishkov's avatar
Kostya Shishkov committed
1216 1217
    avctx->codec_tag   = ctx->profile_info->tag;

1218 1219 1220 1221
    av_log(avctx, AV_LOG_DEBUG,
           "profile %d, %d slices, interlacing: %s, %d bits per MB\n",
           ctx->profile, ctx->slices_per_picture * ctx->pictures_per_frame,
           interlaced ? "yes" : "no", ctx->bits_per_mb);
1222 1223
    av_log(avctx, AV_LOG_DEBUG, "frame size upper bound: %d\n",
           ctx->frame_size_upper_bound);
Kostya Shishkov's avatar
Kostya Shishkov committed
1224 1225 1226 1227 1228 1229 1230 1231 1232

    return 0;
}

#define OFFSET(x) offsetof(ProresContext, x)
#define VE     AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

static const AVOption options[] = {
    { "mbs_per_slice", "macroblocks per slice", OFFSET(mbs_per_slice),
1233
        AV_OPT_TYPE_INT, { .i64 = 8 }, 1, MAX_MBS_PER_SLICE, VE },
Kostya Shishkov's avatar
Kostya Shishkov committed
1234
    { "profile",       NULL, OFFSET(profile), AV_OPT_TYPE_INT,
1235
        { .i64 = PRORES_PROFILE_STANDARD },
1236
        PRORES_PROFILE_PROXY, PRORES_PROFILE_4444, VE, "profile" },
1237
    { "proxy",         NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_PROXY },
Kostya Shishkov's avatar
Kostya Shishkov committed
1238
        0, 0, VE, "profile" },
1239
    { "lt",            NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_LT },
Kostya Shishkov's avatar
Kostya Shishkov committed
1240
        0, 0, VE, "profile" },
1241
    { "standard",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_STANDARD },
Kostya Shishkov's avatar
Kostya Shishkov committed
1242
        0, 0, VE, "profile" },
1243
    { "hq",            NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_HQ },
Kostya Shishkov's avatar
Kostya Shishkov committed
1244
        0, 0, VE, "profile" },
1245 1246
    { "4444",          NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_4444 },
        0, 0, VE, "profile" },
1247 1248 1249
    { "vendor", "vendor ID", OFFSET(vendor),
        AV_OPT_TYPE_STRING, { .str = "Lavc" }, CHAR_MIN, CHAR_MAX, VE },
    { "bits_per_mb", "desired bits per macroblock", OFFSET(bits_per_mb),
1250
        AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8192, VE },
1251
    { "quant_mat", "quantiser matrix", OFFSET(quant_sel), AV_OPT_TYPE_INT,
1252
        { .i64 = -1 }, -1, QUANT_MAT_DEFAULT, VE, "quant_mat" },
1253
    { "auto",          NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 },
1254
        0, 0, VE, "quant_mat" },
1255
    { "proxy",         NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_PROXY },
1256
        0, 0, VE, "quant_mat" },
1257
    { "lt",            NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_LT },
1258
        0, 0, VE, "quant_mat" },
1259
    { "standard",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_STANDARD },
1260
        0, 0, VE, "quant_mat" },
1261
    { "hq",            NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_HQ },
1262
        0, 0, VE, "quant_mat" },
1263
    { "default",       NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_DEFAULT },
1264
        0, 0, VE, "quant_mat" },
1265 1266
    { "alpha_bits", "bits for alpha plane", OFFSET(alpha_bits), AV_OPT_TYPE_INT,
        { .i64 = 16 }, 0, 16, VE },
Kostya Shishkov's avatar
Kostya Shishkov committed
1267 1268 1269 1270 1271 1272 1273 1274 1275 1276
    { NULL }
};

static const AVClass proresenc_class = {
    .class_name = "ProRes encoder",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
};

1277 1278
AVCodec ff_prores_ks_encoder = {
    .name           = "prores_ks",
1279
    .long_name      = NULL_IF_CONFIG_SMALL("Apple ProRes (iCodec Pro)"),
Kostya Shishkov's avatar
Kostya Shishkov committed
1280
    .type           = AVMEDIA_TYPE_VIDEO,
1281
    .id             = AV_CODEC_ID_PRORES,
Kostya Shishkov's avatar
Kostya Shishkov committed
1282 1283 1284 1285
    .priv_data_size = sizeof(ProresContext),
    .init           = encode_init,
    .close          = encode_close,
    .encode2        = encode_frame,
1286
    .capabilities   = CODEC_CAP_SLICE_THREADS,
1287
    .pix_fmts       = (const enum AVPixelFormat[]) {
1288 1289
                          AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
                          AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_NONE
Kostya Shishkov's avatar
Kostya Shishkov committed
1290 1291 1292
                      },
    .priv_class     = &proresenc_class,
};