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FFmpeg/libavcodec/cfhdenc.c
Paul B Mahol 9f702fc8f4 avcodec: extend CFHD description
2020-08-14 10:52:28 +02:00

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/*
* Copyright (c) 2020 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* 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.
*
* FFmpeg is distributed in the hope that it will be useful,
* 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Cineform HD video encoder
*/
#include <stdlib.h>
#include <string.h>
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "bytestream.h"
#include "cfhd.h"
#include "put_bits.h"
#include "internal.h"
#include "thread.h"
/* Derived from existing tables from decoder */
static const unsigned codebook[256][2] = {
{ 1, 0x00000000 }, { 2, 0x00000002 }, { 3, 0x00000007 }, { 5, 0x00000019 }, { 6, 0x00000030 },
{ 6, 0x00000036 }, { 7, 0x00000063 }, { 7, 0x0000006B }, { 7, 0x0000006F }, { 8, 0x000000D4 },
{ 8, 0x000000DC }, { 9, 0x00000189 }, { 9, 0x000001A0 }, { 9, 0x000001AB }, {10, 0x00000310 },
{10, 0x00000316 }, {10, 0x00000354 }, {10, 0x00000375 }, {10, 0x00000377 }, {11, 0x00000623 },
{11, 0x00000684 }, {11, 0x000006AB }, {11, 0x000006EC }, {12, 0x00000C44 }, {12, 0x00000C5C },
{12, 0x00000C5E }, {12, 0x00000D55 }, {12, 0x00000DD1 }, {12, 0x00000DD3 }, {12, 0x00000DDB },
{13, 0x0000188B }, {13, 0x000018BB }, {13, 0x00001AA8 }, {13, 0x00001BA0 }, {13, 0x00001BA4 },
{13, 0x00001BB5 }, {14, 0x00003115 }, {14, 0x00003175 }, {14, 0x0000317D }, {14, 0x00003553 },
{14, 0x00003768 }, {15, 0x00006228 }, {15, 0x000062E8 }, {15, 0x000062F8 }, {15, 0x00006AA4 },
{15, 0x00006E85 }, {15, 0x00006E87 }, {15, 0x00006ED3 }, {16, 0x0000C453 }, {16, 0x0000C5D3 },
{16, 0x0000C5F3 }, {16, 0x0000DD08 }, {16, 0x0000DD0C }, {16, 0x0000DDA4 }, {17, 0x000188A4 },
{17, 0x00018BA5 }, {17, 0x00018BE5 }, {17, 0x0001AA95 }, {17, 0x0001AA97 }, {17, 0x0001BA13 },
{17, 0x0001BB4A }, {17, 0x0001BB4B }, {18, 0x00031748 }, {18, 0x000317C8 }, {18, 0x00035528 },
{18, 0x0003552C }, {18, 0x00037424 }, {18, 0x00037434 }, {18, 0x00037436 }, {19, 0x00062294 },
{19, 0x00062E92 }, {19, 0x00062F92 }, {19, 0x0006AA52 }, {19, 0x0006AA5A }, {19, 0x0006E84A },
{19, 0x0006E86A }, {19, 0x0006E86E }, {20, 0x000C452A }, {20, 0x000C5D27 }, {20, 0x000C5F26 },
{20, 0x000D54A6 }, {20, 0x000D54B6 }, {20, 0x000DD096 }, {20, 0x000DD0D6 }, {20, 0x000DD0DE },
{21, 0x00188A56 }, {21, 0x0018BA4D }, {21, 0x0018BE4E }, {21, 0x0018BE4F }, {21, 0x001AA96E },
{21, 0x001BA12E }, {21, 0x001BA12F }, {21, 0x001BA1AF }, {21, 0x001BA1BF }, {22, 0x00317498 },
{22, 0x0035529C }, {22, 0x0035529D }, {22, 0x003552DE }, {22, 0x003552DF }, {22, 0x0037435D },
{22, 0x0037437D }, {23, 0x0062295D }, {23, 0x0062E933 }, {23, 0x006AA53D }, {23, 0x006AA53E },
{23, 0x006AA53F }, {23, 0x006E86B9 }, {23, 0x006E86F8 }, {24, 0x00C452B8 }, {24, 0x00C5D265 },
{24, 0x00D54A78 }, {24, 0x00D54A79 }, {24, 0x00DD0D70 }, {24, 0x00DD0D71 }, {24, 0x00DD0DF2 },
{24, 0x00DD0DF3 }, {26, 0x03114BA2 }, {25, 0x0188A5B1 }, {25, 0x0188A58B }, {25, 0x0188A595 },
{25, 0x0188A5D6 }, {25, 0x0188A5D7 }, {25, 0x0188A5A8 }, {25, 0x0188A5AE }, {25, 0x0188A5AF },
{25, 0x0188A5C4 }, {25, 0x0188A5C5 }, {25, 0x0188A587 }, {25, 0x0188A584 }, {25, 0x0188A585 },
{25, 0x0188A5C6 }, {25, 0x0188A5C7 }, {25, 0x0188A5CC }, {25, 0x0188A5CD }, {25, 0x0188A581 },
{25, 0x0188A582 }, {25, 0x0188A583 }, {25, 0x0188A5CE }, {25, 0x0188A5CF }, {25, 0x0188A5C2 },
{25, 0x0188A5C3 }, {25, 0x0188A5C1 }, {25, 0x0188A5B4 }, {25, 0x0188A5B5 }, {25, 0x0188A5E6 },
{25, 0x0188A5E7 }, {25, 0x0188A5E4 }, {25, 0x0188A5E5 }, {25, 0x0188A5AB }, {25, 0x0188A5E0 },
{25, 0x0188A5E1 }, {25, 0x0188A5E2 }, {25, 0x0188A5E3 }, {25, 0x0188A5B6 }, {25, 0x0188A5B7 },
{25, 0x0188A5FD }, {25, 0x0188A57E }, {25, 0x0188A57F }, {25, 0x0188A5EC }, {25, 0x0188A5ED },
{25, 0x0188A5FE }, {25, 0x0188A5FF }, {25, 0x0188A57D }, {25, 0x0188A59C }, {25, 0x0188A59D },
{25, 0x0188A5E8 }, {25, 0x0188A5E9 }, {25, 0x0188A5EA }, {25, 0x0188A5EB }, {25, 0x0188A5EF },
{25, 0x0188A57A }, {25, 0x0188A57B }, {25, 0x0188A578 }, {25, 0x0188A579 }, {25, 0x0188A5BA },
{25, 0x0188A5BB }, {25, 0x0188A5B8 }, {25, 0x0188A5B9 }, {25, 0x0188A588 }, {25, 0x0188A589 },
{25, 0x018BA4C8 }, {25, 0x018BA4C9 }, {25, 0x0188A5FA }, {25, 0x0188A5FB }, {25, 0x0188A5BC },
{25, 0x0188A5BD }, {25, 0x0188A598 }, {25, 0x0188A599 }, {25, 0x0188A5F4 }, {25, 0x0188A5F5 },
{25, 0x0188A59B }, {25, 0x0188A5DE }, {25, 0x0188A5DF }, {25, 0x0188A596 }, {25, 0x0188A597 },
{25, 0x0188A5F8 }, {25, 0x0188A5F9 }, {25, 0x0188A5F1 }, {25, 0x0188A58E }, {25, 0x0188A58F },
{25, 0x0188A5DC }, {25, 0x0188A5DD }, {25, 0x0188A5F2 }, {25, 0x0188A5F3 }, {25, 0x0188A58C },
{25, 0x0188A58D }, {25, 0x0188A5A4 }, {25, 0x0188A5F0 }, {25, 0x0188A5A5 }, {25, 0x0188A5A6 },
{25, 0x0188A5A7 }, {25, 0x0188A59A }, {25, 0x0188A5A2 }, {25, 0x0188A5A3 }, {25, 0x0188A58A },
{25, 0x0188A5B0 }, {25, 0x0188A5A0 }, {25, 0x0188A5A1 }, {25, 0x0188A5DA }, {25, 0x0188A5DB },
{25, 0x0188A59E }, {25, 0x0188A59F }, {25, 0x0188A5D8 }, {25, 0x0188A5EE }, {25, 0x0188A5D9 },
{25, 0x0188A5F6 }, {25, 0x0188A5F7 }, {25, 0x0188A57C }, {25, 0x0188A5C8 }, {25, 0x0188A5C9 },
{25, 0x0188A594 }, {25, 0x0188A5FC }, {25, 0x0188A5CA }, {25, 0x0188A5CB }, {25, 0x0188A5B2 },
{25, 0x0188A5AA }, {25, 0x0188A5B3 }, {25, 0x0188A572 }, {25, 0x0188A573 }, {25, 0x0188A5C0 },
{25, 0x0188A5BE }, {25, 0x0188A5BF }, {25, 0x0188A592 }, {25, 0x0188A580 }, {25, 0x0188A593 },
{25, 0x0188A590 }, {25, 0x0188A591 }, {25, 0x0188A586 }, {25, 0x0188A5A9 }, {25, 0x0188A5D2 },
{25, 0x0188A5D3 }, {25, 0x0188A5D4 }, {25, 0x0188A5D5 }, {25, 0x0188A5AC }, {25, 0x0188A5AD },
{25, 0x0188A5D0 },
};
/* Derived by extracting runcodes from existing tables from decoder */
static const uint16_t runbook[18][3] = {
{1, 0x0000, 1}, {2, 0x0000, 2}, {3, 0x0000, 3}, {4, 0x0000, 4},
{5, 0x0000, 5}, {6, 0x0000, 6}, {7, 0x0000, 7}, {8, 0x0000, 8},
{9, 0x0000, 9}, {10, 0x0000, 10}, {11, 0x0000, 11},
{7, 0x0069, 12}, {8, 0x00D1, 20}, {9, 0x018A, 32},
{10, 0x0343, 60}, {11, 0x0685, 100}, {13, 0x18BF, 180}, {13, 0x1BA5, 320},
};
/*
* Derived by inspecting various quality encodes
* and adding some more from scratch.
*/
static const uint16_t quantization_per_subband[2][3][13][9] = {
{{
{ 16, 16, 8, 4, 4, 2, 6, 6, 9, }, // film3+
{ 16, 16, 8, 4, 4, 2, 6, 6, 9, }, // film3
{ 16, 16, 8, 4, 4, 2, 7, 7, 10, }, // film2+
{ 16, 16, 8, 4, 4, 2, 8, 8, 12, }, // film2
{ 16, 16, 8, 4, 4, 2, 16, 16, 26, }, // film1++
{ 24, 24, 12, 6, 6, 3, 24, 24, 36, }, // film1+
{ 24, 24, 12, 6, 6, 3, 24, 24, 36, }, // film1
{ 32, 32, 24, 8, 8, 6, 32, 32, 48, }, // high+
{ 32, 32, 24, 8, 8, 6, 32, 32, 48, }, // high
{ 48, 48, 32, 12, 12, 8, 64, 64, 96, }, // medium+
{ 48, 48, 32, 12, 12, 8, 64, 64, 96, }, // medium
{ 64, 64, 48, 16, 16, 12, 96, 96, 144, }, // low+
{ 64, 64, 48, 16, 16, 12, 128, 128, 192, }, // low
},
{
{ 16, 16, 8, 4, 4, 2, 6, 6, 9, }, // film3+
{ 16, 16, 8, 4, 4, 2, 6, 6, 12, }, // film3
{ 16, 16, 8, 4, 4, 2, 7, 7, 14, }, // film2+
{ 16, 16, 8, 4, 4, 2, 8, 8, 16, }, // film2
{ 16, 16, 8, 4, 4, 2, 16, 16, 26, }, // film1++
{ 24, 24, 12, 6, 6, 3, 24, 24, 36, }, // film1+
{ 24, 24, 12, 6, 6, 3, 24, 24, 48, }, // film1
{ 32, 32, 24, 8, 8, 6, 32, 32, 48, }, // high+
{ 48, 48, 32, 12, 12, 8, 32, 32, 64, }, // high
{ 48, 48, 32, 12, 12, 8, 64, 64, 96, }, // medium+
{ 48, 48, 32, 12, 12, 8, 64, 64, 128, }, // medium
{ 64, 64, 48, 16, 16, 12, 96, 96, 160, }, // low+
{ 64, 64, 48, 16, 16, 12, 128, 128, 192, }, // low
},
{
{ 16, 16, 8, 4, 4, 2, 6, 6, 9, }, // film3+
{ 16, 16, 8, 4, 4, 2, 6, 6, 12, }, // film3
{ 16, 16, 8, 4, 4, 2, 7, 7, 14, }, // film2+
{ 16, 16, 8, 4, 4, 2, 8, 8, 16, }, // film2
{ 16, 16, 8, 4, 4, 2, 16, 16, 26, }, // film1++
{ 24, 24, 12, 6, 6, 3, 24, 24, 36, }, // film1+
{ 24, 24, 12, 6, 6, 3, 24, 24, 48, }, // film1
{ 32, 32, 24, 8, 8, 6, 32, 32, 48, }, // high+
{ 48, 48, 32, 12, 12, 8, 32, 32, 64, }, // high
{ 48, 48, 32, 12, 12, 8, 64, 64, 96, }, // medium+
{ 48, 48, 32, 12, 12, 8, 64, 64, 128, }, // medium
{ 64, 64, 48, 16, 16, 12, 96, 96, 160, }, // low+
{ 64, 64, 48, 16, 16, 12, 128, 128, 192, }, // low
}},
{{
{ 16, 16, 8, 16, 16, 8, 24, 24, 36, }, // film3+
{ 16, 16, 8, 16, 16, 8, 24, 24, 36, }, // film3
{ 16, 16, 8, 16, 16, 8, 32, 32, 48, }, // film2+
{ 16, 16, 8, 16, 16, 8, 32, 32, 48, }, // film2
{ 16, 16, 8, 20, 20, 10, 80, 80, 128, }, // film1++
{ 24, 24, 12, 24, 24, 12, 96, 96, 144, }, // film1+
{ 24, 24, 12, 24, 24, 12, 96, 96, 144, }, // film1
{ 32, 32, 24, 32, 32, 24, 128, 128, 192, }, // high+
{ 32, 32, 24, 32, 32, 24, 128, 128, 192, }, // high
{ 48, 48, 32, 48, 48, 32, 256, 256, 384, }, // medium+
{ 48, 48, 32, 48, 48, 32, 256, 256, 384, }, // medium
{ 56, 56, 40, 56, 56, 40, 512, 512, 768, }, // low+
{ 64, 64, 48, 64, 64, 48, 512, 512, 768, }, // low
},
{
{ 16, 16, 8, 16, 16, 8, 24, 24, 36, }, // film3+
{ 16, 16, 8, 16, 16, 8, 48, 48, 72, }, // film3
{ 16, 16, 8, 16, 16, 8, 48, 48, 72, }, // film2+
{ 16, 16, 8, 16, 16, 8, 64, 64, 96, }, // film2
{ 16, 16, 8, 20, 20, 10, 80, 80, 128, }, // film1++
{ 24, 24, 12, 24, 24, 12, 96, 96, 144, }, // film1+
{ 24, 24, 12, 24, 24, 12, 192, 192, 288, }, // film1
{ 32, 32, 24, 32, 32, 24, 128, 128, 192, }, // high+
{ 32, 32, 24, 32, 32, 24, 256, 256, 384, }, // high
{ 48, 48, 32, 48, 48, 32, 256, 256, 384, }, // medium+
{ 48, 48, 32, 48, 48, 32, 512, 512, 768, }, // medium
{ 56, 56, 40, 56, 56, 40, 512, 512, 768, }, // low+
{ 64, 64, 48, 64, 64, 48,1024,1024,1536, }, // low
},
{
{ 16, 16, 8, 16, 16, 8, 24, 24, 36, }, // film3+
{ 16, 16, 8, 16, 16, 8, 48, 48, 72, }, // film3
{ 16, 16, 8, 16, 16, 8, 48, 48, 72, }, // film2+
{ 16, 16, 8, 16, 16, 8, 64, 64, 96, }, // film2
{ 16, 16, 10, 20, 20, 10, 80, 80, 128, }, // film1++
{ 24, 24, 12, 24, 24, 12, 96, 96, 144, }, // film1+
{ 24, 24, 12, 24, 24, 12, 192, 192, 288, }, // film1
{ 32, 32, 24, 32, 32, 24, 128, 128, 192, }, // high+
{ 32, 32, 24, 32, 32, 24, 256, 256, 384, }, // high
{ 48, 48, 32, 48, 48, 32, 256, 256, 384, }, // medium+
{ 48, 48, 32, 48, 48, 32, 512, 512, 768, }, // medium
{ 56, 56, 40, 56, 56, 40, 512, 512, 768, }, // low+
{ 64, 64, 48, 64, 64, 48,1024,1024,1536, }, // low
}},
};
typedef struct Codebook {
unsigned bits;
unsigned size;
} Codebook;
typedef struct Runbook {
unsigned size;
unsigned bits;
unsigned run;
} Runbook;
typedef struct PlaneEnc {
unsigned size;
int16_t *dwt_buf;
int16_t *dwt_tmp;
unsigned quantization[SUBBAND_COUNT];
int16_t *subband[SUBBAND_COUNT];
int16_t *l_h[8];
SubBand band[DWT_LEVELS][4];
} PlaneEnc;
typedef struct CFHDEncContext {
const AVClass *class;
PutBitContext pb;
PutByteContext pby;
int quality;
int planes;
int chroma_h_shift;
int chroma_v_shift;
PlaneEnc plane[4];
uint16_t lut[1024];
Runbook rb[321];
Codebook cb[513];
int16_t *alpha;
} CFHDEncContext;
static av_cold int cfhd_encode_init(AVCodecContext *avctx)
{
CFHDEncContext *s = avctx->priv_data;
const int sign_mask = 256;
const int twos_complement = -sign_mask;
const int mag_mask = sign_mask - 1;
int ret, last = 0;
ret = av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt,
&s->chroma_h_shift,
&s->chroma_v_shift);
if (ret < 0)
return ret;
if (avctx->width & 15) {
av_log(avctx, AV_LOG_ERROR, "Width must be multiple of 16.\n");
return AVERROR_INVALIDDATA;
}
s->planes = av_pix_fmt_count_planes(avctx->pix_fmt);
for (int i = 0; i < s->planes; i++) {
int w8, h8, w4, h4, w2, h2;
int width = i ? avctx->width >> s->chroma_h_shift : avctx->width;
int height = i ? FFALIGN(avctx->height >> s->chroma_v_shift, 8) :
FFALIGN(avctx->height >> s->chroma_v_shift, 8);
ptrdiff_t stride = FFALIGN(width / 8, 8) * 8;
w8 = FFALIGN(width / 8, 8);
h8 = height / 8;
w4 = w8 * 2;
h4 = h8 * 2;
w2 = w4 * 2;
h2 = h4 * 2;
s->plane[i].dwt_buf =
av_mallocz_array(height * stride, sizeof(*s->plane[i].dwt_buf));
s->plane[i].dwt_tmp =
av_malloc_array(height * stride, sizeof(*s->plane[i].dwt_tmp));
if (!s->plane[i].dwt_buf || !s->plane[i].dwt_tmp)
return AVERROR(ENOMEM);
s->plane[i].subband[0] = s->plane[i].dwt_buf;
s->plane[i].subband[1] = s->plane[i].dwt_buf + 2 * w8 * h8;
s->plane[i].subband[2] = s->plane[i].dwt_buf + 1 * w8 * h8;
s->plane[i].subband[3] = s->plane[i].dwt_buf + 3 * w8 * h8;
s->plane[i].subband[4] = s->plane[i].dwt_buf + 2 * w4 * h4;
s->plane[i].subband[5] = s->plane[i].dwt_buf + 1 * w4 * h4;
s->plane[i].subband[6] = s->plane[i].dwt_buf + 3 * w4 * h4;
s->plane[i].subband[7] = s->plane[i].dwt_buf + 2 * w2 * h2;
s->plane[i].subband[8] = s->plane[i].dwt_buf + 1 * w2 * h2;
s->plane[i].subband[9] = s->plane[i].dwt_buf + 3 * w2 * h2;
for (int j = 0; j < DWT_LEVELS; j++) {
for (int k = 0; k < FF_ARRAY_ELEMS(s->plane[i].band[j]); k++) {
s->plane[i].band[j][k].width = (width / 8) << j;
s->plane[i].band[j][k].height = (height / 8) << j;
s->plane[i].band[j][k].a_width = w8 << j;
s->plane[i].band[j][k].a_height = h8 << j;
}
}
/* ll2 and ll1 commented out because they are done in-place */
s->plane[i].l_h[0] = s->plane[i].dwt_tmp;
s->plane[i].l_h[1] = s->plane[i].dwt_tmp + 2 * w8 * h8;
// s->plane[i].l_h[2] = ll2;
s->plane[i].l_h[3] = s->plane[i].dwt_tmp;
s->plane[i].l_h[4] = s->plane[i].dwt_tmp + 2 * w4 * h4;
// s->plane[i].l_h[5] = ll1;
s->plane[i].l_h[6] = s->plane[i].dwt_tmp;
s->plane[i].l_h[7] = s->plane[i].dwt_tmp + 2 * w2 * h2;
}
for (int i = 0; i < 512; i++) {
int value = (i & sign_mask) ? twos_complement + (i & mag_mask): i;
int mag = FFMIN(FFABS(value), 255);
if (mag) {
s->cb[i].bits = (codebook[mag][1] << 1) | (value > 0 ? 0 : 1);
s->cb[i].size = codebook[mag][0] + 1;
} else {
s->cb[i].bits = codebook[mag][1];
s->cb[i].size = codebook[mag][0];
}
}
s->cb[512].bits = 0x3114ba3;
s->cb[512].size = 26;
s->rb[0].run = 0;
for (int i = 1, j = 0; i < 320 && j < 17; j++) {
int run = runbook[j][2];
int end = runbook[j+1][2];
while (i < end) {
s->rb[i].run = run;
s->rb[i].bits = runbook[j][1];
s->rb[i++].size = runbook[j][0];
}
}
s->rb[320].bits = runbook[17][1];
s->rb[320].size = runbook[17][0];
s->rb[320].run = 320;
for (int i = 0; i < 256; i++) {
int idx = i + ((768LL * i * i * i) / (256 * 256 * 256));
s->lut[idx] = i;
}
for (int i = 0; i < 1024; i++) {
if (s->lut[i])
last = s->lut[i];
else
s->lut[i] = last;
}
if (s->planes != 4)
return 0;
s->alpha = av_calloc(avctx->width * avctx->height, sizeof(*s->alpha));
if (!s->alpha)
return AVERROR(ENOMEM);
return 0;
}
static av_always_inline void filter(int16_t *input, ptrdiff_t in_stride,
int16_t *low, ptrdiff_t low_stride,
int16_t *high, ptrdiff_t high_stride,
int len)
{
low[(0>>1) * low_stride] = av_clip_int16(input[0*in_stride] + input[1*in_stride]);
high[(0>>1) * high_stride] = av_clip_int16((5 * input[0*in_stride] - 11 * input[1*in_stride] +
4 * input[2*in_stride] + 4 * input[3*in_stride] -
1 * input[4*in_stride] - 1 * input[5*in_stride] + 4) >> 3);
for (int i = 2; i < len - 2; i += 2) {
low[(i>>1) * low_stride] = av_clip_int16(input[i*in_stride] + input[(i+1)*in_stride]);
high[(i>>1) * high_stride] = av_clip_int16(((-input[(i-2)*in_stride] - input[(i-1)*in_stride] +
input[(i+2)*in_stride] + input[(i+3)*in_stride] + 4) >> 3) +
input[(i+0)*in_stride] - input[(i+1)*in_stride]);
}
low[((len-2)>>1) * low_stride] = av_clip_int16(input[((len-2)+0)*in_stride] + input[((len-2)+1)*in_stride]);
high[((len-2)>>1) * high_stride] = av_clip_int16((11* input[((len-2)+0)*in_stride] - 5 * input[((len-2)+1)*in_stride] -
4 * input[((len-2)-1)*in_stride] - 4 * input[((len-2)-2)*in_stride] +
1 * input[((len-2)-3)*in_stride] + 1 * input[((len-2)-4)*in_stride] + 4) >> 3);
}
static void horiz_filter(int16_t *input, int16_t *low, int16_t *high,
int width)
{
filter(input, 1, low, 1, high, 1, width);
}
static void vert_filter(int16_t *input, ptrdiff_t in_stride,
int16_t *low, ptrdiff_t low_stride,
int16_t *high, ptrdiff_t high_stride, int len)
{
filter(input, in_stride, low, low_stride, high, high_stride, len);
}
static void quantize_band(int16_t *input, int width, int a_width,
int height, unsigned quantization)
{
const int16_t factor = (uint32_t)(1U << 15) / quantization;
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++)
input[j] = av_clip_intp2(((input[j] * factor + 16384 * FFSIGN(input[j])) / 32768), 10);
input += a_width;
}
}
static int put_runcode(PutBitContext *pb, int count, const Runbook *const rb)
{
while (count > 0) {
const int index = FFMIN(320, count);
put_bits(pb, rb[index].size, rb[index].bits);
count -= rb[index].run;
}
return 0;
}
static void process_alpha(const int16_t *src, int width, int height, ptrdiff_t stride, int16_t *dst)
{
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++) {
int alpha = src[j];
if (alpha > 0 && alpha < 4080) {
alpha *= 223;
alpha += 128;
alpha >>= 8;
alpha += 256;
}
dst[j] = av_clip_uintp2(alpha, 12);
}
src += stride;
dst += width;
}
}
static int cfhd_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet)
{
CFHDEncContext *s = avctx->priv_data;
PutByteContext *pby = &s->pby;
PutBitContext *pb = &s->pb;
const Codebook *const cb = s->cb;
const Runbook *const rb = s->rb;
const uint16_t *lut = s->lut;
unsigned pos;
int ret;
for (int plane = 0; plane < s->planes; plane++) {
int width = s->plane[plane].band[2][0].width;
int a_width = s->plane[plane].band[2][0].a_width;
int height = s->plane[plane].band[2][0].height;
int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
int16_t *input = (int16_t *)frame->data[act_plane];
int16_t *low = s->plane[plane].l_h[6];
int16_t *high = s->plane[plane].l_h[7];
ptrdiff_t in_stride = frame->linesize[act_plane] / 2;
int low_stride, high_stride;
if (plane == 3) {
process_alpha(input, avctx->width, avctx->height,
in_stride, s->alpha);
input = s->alpha;
in_stride = avctx->width;
}
for (int i = 0; i < height * 2; i++) {
horiz_filter(input, low, high, width * 2);
input += in_stride;
low += a_width;
high += a_width;
}
input = s->plane[plane].l_h[7];
low = s->plane[plane].subband[7];
low_stride = s->plane[plane].band[2][0].a_width;
high = s->plane[plane].subband[9];
high_stride = s->plane[plane].band[2][0].a_width;
for (int i = 0; i < width; i++) {
vert_filter(input, a_width, low, low_stride, high, high_stride, height * 2);
input++;
low++;
high++;
}
input = s->plane[plane].l_h[6];
low = s->plane[plane].l_h[7];
high = s->plane[plane].subband[8];
for (int i = 0; i < width; i++) {
vert_filter(input, a_width, low, low_stride, high, high_stride, height * 2);
input++;
low++;
high++;
}
a_width = s->plane[plane].band[1][0].a_width;
width = s->plane[plane].band[1][0].width;
height = s->plane[plane].band[1][0].height;
input = s->plane[plane].l_h[7];
low = s->plane[plane].l_h[3];
low_stride = s->plane[plane].band[1][0].a_width;
high = s->plane[plane].l_h[4];
high_stride = s->plane[plane].band[1][0].a_width;
for (int i = 0; i < height * 2; i++) {
for (int j = 0; j < width * 2; j++)
input[j] /= 4;
input += a_width * 2;
}
input = s->plane[plane].l_h[7];
for (int i = 0; i < height * 2; i++) {
horiz_filter(input, low, high, width * 2);
input += a_width * 2;
low += low_stride;
high += high_stride;
}
input = s->plane[plane].l_h[4];
low = s->plane[plane].subband[4];
high = s->plane[plane].subband[6];
for (int i = 0; i < width; i++) {
vert_filter(input, a_width, low, low_stride, high, high_stride, height * 2);
input++;
low++;
high++;
}
input = s->plane[plane].l_h[3];
low = s->plane[plane].l_h[4];
high = s->plane[plane].subband[5];
for (int i = 0; i < width; i++) {
vert_filter(input, a_width, low, low_stride, high, high_stride, height * 2);
input++;
low++;
high++;
}
a_width = s->plane[plane].band[0][0].a_width;
width = s->plane[plane].band[0][0].width;
height = s->plane[plane].band[0][0].height;
input = s->plane[plane].l_h[4];
low = s->plane[plane].l_h[0];
low_stride = s->plane[plane].band[0][0].a_width;
high = s->plane[plane].l_h[1];
high_stride = s->plane[plane].band[0][0].a_width;
if (avctx->pix_fmt != AV_PIX_FMT_YUV422P10) {
for (int i = 0; i < height * 2; i++) {
for (int j = 0; j < width * 2; j++)
input[j] /= 4;
input += a_width * 2;
}
}
input = s->plane[plane].l_h[4];
for (int i = 0; i < height * 2; i++) {
horiz_filter(input, low, high, width * 2);
input += a_width * 2;
low += low_stride;
high += high_stride;
}
low = s->plane[plane].subband[1];
high = s->plane[plane].subband[3];
input = s->plane[plane].l_h[1];
for (int i = 0; i < width; i++) {
vert_filter(input, a_width, low, low_stride, high, high_stride, height * 2);
input++;
low++;
high++;
}
low = s->plane[plane].subband[0];
high = s->plane[plane].subband[2];
input = s->plane[plane].l_h[0];
for (int i = 0; i < width; i++) {
vert_filter(input, a_width, low, low_stride, high, high_stride, height * 2);
input++;
low++;
high++;
}
}
ret = ff_alloc_packet2(avctx, pkt, 64LL + s->planes * (2LL * avctx->width * avctx->height + 1000LL), 0);
if (ret < 0)
return ret;
bytestream2_init_writer(pby, pkt->data, pkt->size);
bytestream2_put_be16(pby, SampleType);
bytestream2_put_be16(pby, 9);
bytestream2_put_be16(pby, SampleIndexTable);
bytestream2_put_be16(pby, s->planes);
for (int i = 0; i < s->planes; i++)
bytestream2_put_be32(pby, 0);
bytestream2_put_be16(pby, TransformType);
bytestream2_put_be16(pby, 0);
bytestream2_put_be16(pby, NumFrames);
bytestream2_put_be16(pby, 1);
bytestream2_put_be16(pby, ChannelCount);
bytestream2_put_be16(pby, s->planes);
bytestream2_put_be16(pby, EncodedFormat);
bytestream2_put_be16(pby, avctx->pix_fmt == AV_PIX_FMT_YUV422P10 ? 1 : 3 + (s->planes == 4));
bytestream2_put_be16(pby, WaveletCount);
bytestream2_put_be16(pby, 3);
bytestream2_put_be16(pby, SubbandCount);
bytestream2_put_be16(pby, SUBBAND_COUNT);
bytestream2_put_be16(pby, NumSpatial);
bytestream2_put_be16(pby, 2);
bytestream2_put_be16(pby, FirstWavelet);
bytestream2_put_be16(pby, 3);
bytestream2_put_be16(pby, ImageWidth);
bytestream2_put_be16(pby, avctx->width);
bytestream2_put_be16(pby, ImageHeight);
bytestream2_put_be16(pby, avctx->height);
bytestream2_put_be16(pby, -FrameNumber);
bytestream2_put_be16(pby, avctx->frame_number);
bytestream2_put_be16(pby, Precision);
bytestream2_put_be16(pby, avctx->pix_fmt == AV_PIX_FMT_YUV422P10 ? 10 : 12);
bytestream2_put_be16(pby, PrescaleTable);
bytestream2_put_be16(pby, avctx->pix_fmt == AV_PIX_FMT_YUV422P10 ? 0x2000 : 0x2800);
bytestream2_put_be16(pby, SampleFlags);
bytestream2_put_be16(pby, 1);
for (int p = 0; p < s->planes; p++) {
int width = s->plane[p].band[0][0].width;
int a_width = s->plane[p].band[0][0].a_width;
int height = s->plane[p].band[0][0].height;
int16_t *data = s->plane[p].subband[0];
if (p) {
bytestream2_put_be16(pby, SampleType);
bytestream2_put_be16(pby, 3);
bytestream2_put_be16(pby, ChannelNumber);
bytestream2_put_be16(pby, p);
}
bytestream2_put_be16(pby, BitstreamMarker);
bytestream2_put_be16(pby, 0x1a4a);
pos = bytestream2_tell_p(pby);
bytestream2_put_be16(pby, LowpassSubband);
bytestream2_put_be16(pby, 0);
bytestream2_put_be16(pby, NumLevels);
bytestream2_put_be16(pby, 3);
bytestream2_put_be16(pby, LowpassWidth);
bytestream2_put_be16(pby, width);
bytestream2_put_be16(pby, LowpassHeight);
bytestream2_put_be16(pby, height);
bytestream2_put_be16(pby, PixelOffset);
bytestream2_put_be16(pby, 0);
bytestream2_put_be16(pby, LowpassQuantization);
bytestream2_put_be16(pby, 1);
bytestream2_put_be16(pby, LowpassPrecision);
bytestream2_put_be16(pby, 16);
bytestream2_put_be16(pby, BitstreamMarker);
bytestream2_put_be16(pby, 0x0f0f);
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++)
bytestream2_put_be16(pby, data[j]);
data += a_width;
}
bytestream2_put_be16(pby, BitstreamMarker);
bytestream2_put_be16(pby, 0x1b4b);
for (int l = 0; l < 3; l++) {
for (int i = 0; i < 3; i++) {
s->plane[p].quantization[1 + l * 3 + i] = quantization_per_subband[avctx->pix_fmt != AV_PIX_FMT_YUV422P10][p >= 3 ? 0 : p][s->quality][l * 3 + i];
}
}
for (int l = 0; l < 3; l++) {
int a_width = s->plane[p].band[l][0].a_width;
int width = s->plane[p].band[l][0].width;
int stride = FFALIGN(width, 8);
int height = s->plane[p].band[l][0].height;
bytestream2_put_be16(pby, BitstreamMarker);
bytestream2_put_be16(pby, 0x0d0d);
bytestream2_put_be16(pby, WaveletType);
bytestream2_put_be16(pby, 3 + 2 * (l == 2));
bytestream2_put_be16(pby, WaveletNumber);
bytestream2_put_be16(pby, 3 - l);
bytestream2_put_be16(pby, WaveletLevel);
bytestream2_put_be16(pby, 3 - l);
bytestream2_put_be16(pby, NumBands);
bytestream2_put_be16(pby, 4);
bytestream2_put_be16(pby, HighpassWidth);
bytestream2_put_be16(pby, width);
bytestream2_put_be16(pby, HighpassHeight);
bytestream2_put_be16(pby, height);
bytestream2_put_be16(pby, LowpassBorder);
bytestream2_put_be16(pby, 0);
bytestream2_put_be16(pby, HighpassBorder);
bytestream2_put_be16(pby, 0);
bytestream2_put_be16(pby, LowpassScale);
bytestream2_put_be16(pby, 1);
bytestream2_put_be16(pby, LowpassDivisor);
bytestream2_put_be16(pby, 1);
for (int i = 0; i < 3; i++) {
int16_t *data = s->plane[p].subband[1 + l * 3 + i];
int count = 0, padd = 0;
bytestream2_put_be16(pby, BitstreamMarker);
bytestream2_put_be16(pby, 0x0e0e);
bytestream2_put_be16(pby, SubbandNumber);
bytestream2_put_be16(pby, i + 1);
bytestream2_put_be16(pby, BandCodingFlags);
bytestream2_put_be16(pby, 1);
bytestream2_put_be16(pby, BandWidth);
bytestream2_put_be16(pby, width);
bytestream2_put_be16(pby, BandHeight);
bytestream2_put_be16(pby, height);
bytestream2_put_be16(pby, SubbandBand);
bytestream2_put_be16(pby, 1 + l * 3 + i);
bytestream2_put_be16(pby, BandEncoding);
bytestream2_put_be16(pby, 3);
bytestream2_put_be16(pby, Quantization);
bytestream2_put_be16(pby, s->plane[p].quantization[1 + l * 3 + i]);
bytestream2_put_be16(pby, BandScale);
bytestream2_put_be16(pby, 1);
bytestream2_put_be16(pby, BandHeader);
bytestream2_put_be16(pby, 0);
quantize_band(data, width, a_width, height,
s->plane[p].quantization[1 + l * 3 + i]);
init_put_bits(pb, pkt->data + bytestream2_tell_p(pby), bytestream2_get_bytes_left_p(pby));
for (int m = 0; m < height; m++) {
for (int j = 0; j < stride; j++) {
int16_t index = FFSIGN(data[j]) * lut[FFABS(data[j])];
if (index < 0)
index += 512;
if (index == 0) {
count++;
continue;
} else if (count > 0) {
count = put_runcode(pb, count, rb);
}
put_bits(pb, cb[index].size, cb[index].bits);
}
data += a_width;
}
if (count > 0) {
count = put_runcode(pb, count, rb);
}
put_bits(pb, cb[512].size, cb[512].bits);
flush_put_bits(pb);
bytestream2_skip_p(pby, put_bits_count(pb) >> 3);
padd = (4 - (bytestream2_tell_p(pby) & 3)) & 3;
while (padd--)
bytestream2_put_byte(pby, 0);
bytestream2_put_be16(pby, BandTrailer);
bytestream2_put_be16(pby, 0);
}
bytestream2_put_be16(pby, BitstreamMarker);
bytestream2_put_be16(pby, 0x0c0c);
}
s->plane[p].size = bytestream2_tell_p(pby) - pos;
}
bytestream2_put_be16(pby, GroupTrailer);
bytestream2_put_be16(pby, 0);
av_shrink_packet(pkt, bytestream2_tell_p(pby));
pkt->flags |= AV_PKT_FLAG_KEY;
bytestream2_seek_p(pby, 8, SEEK_SET);
for (int i = 0; i < s->planes; i++)
bytestream2_put_be32(pby, s->plane[i].size);
*got_packet = 1;
return 0;
}
static av_cold int cfhd_encode_close(AVCodecContext *avctx)
{
CFHDEncContext *s = avctx->priv_data;
for (int i = 0; i < s->planes; i++) {
av_freep(&s->plane[i].dwt_buf);
av_freep(&s->plane[i].dwt_tmp);
for (int j = 0; j < SUBBAND_COUNT; j++)
s->plane[i].subband[j] = NULL;
for (int j = 0; j < 8; j++)
s->plane[i].l_h[j] = NULL;
}
av_freep(&s->alpha);
return 0;
}
#define OFFSET(x) offsetof(CFHDEncContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "quality", "set quality", OFFSET(quality), AV_OPT_TYPE_INT, {.i64= 0}, 0, 12, VE, "q" },
{ "film3+", NULL, 0, AV_OPT_TYPE_CONST, {.i64= 0}, 0, 0, VE, "q" },
{ "film3", NULL, 0, AV_OPT_TYPE_CONST, {.i64= 1}, 0, 0, VE, "q" },
{ "film2+", NULL, 0, AV_OPT_TYPE_CONST, {.i64= 2}, 0, 0, VE, "q" },
{ "film2", NULL, 0, AV_OPT_TYPE_CONST, {.i64= 3}, 0, 0, VE, "q" },
{ "film1.5", NULL, 0, AV_OPT_TYPE_CONST, {.i64= 4}, 0, 0, VE, "q" },
{ "film1+", NULL, 0, AV_OPT_TYPE_CONST, {.i64= 5}, 0, 0, VE, "q" },
{ "film1", NULL, 0, AV_OPT_TYPE_CONST, {.i64= 6}, 0, 0, VE, "q" },
{ "high+", NULL, 0, AV_OPT_TYPE_CONST, {.i64= 7}, 0, 0, VE, "q" },
{ "high", NULL, 0, AV_OPT_TYPE_CONST, {.i64= 8}, 0, 0, VE, "q" },
{ "medium+", NULL, 0, AV_OPT_TYPE_CONST, {.i64= 9}, 0, 0, VE, "q" },
{ "medium", NULL, 0, AV_OPT_TYPE_CONST, {.i64=10}, 0, 0, VE, "q" },
{ "low+", NULL, 0, AV_OPT_TYPE_CONST, {.i64=11}, 0, 0, VE, "q" },
{ "low", NULL, 0, AV_OPT_TYPE_CONST, {.i64=12}, 0, 0, VE, "q" },
{ NULL},
};
static const AVClass cfhd_class = {
.class_name = "cfhd",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
AVCodec ff_cfhd_encoder = {
.name = "cfhd",
.long_name = NULL_IF_CONFIG_SMALL("GoPro CineForm HD"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_CFHD,
.priv_data_size = sizeof(CFHDEncContext),
.priv_class = &cfhd_class,
.init = cfhd_encode_init,
.close = cfhd_encode_close,
.encode2 = cfhd_encode_frame,
.capabilities = AV_CODEC_CAP_FRAME_THREADS,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_YUV422P10,
AV_PIX_FMT_GBRP12,
AV_PIX_FMT_GBRAP12,
AV_PIX_FMT_NONE
},
};
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