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55801421b3
FFmpeg/libavcodec/cfhdenc.c
Andreas Rheinhardt 56e9e0273a avcodec/encode: Always use intermediate buffer in ff_alloc_packet2() 
Up until now, ff_alloc_packet2() has a min_size parameter:
It is supposed to be a lower bound on the final size of the packet
to allocate. If it is not too far from the upper bound (namely,
if it is at least half the upper bound), then ff_alloc_packet2()
already allocates the final, already refcounted packet; if it is
not, then the packet is not refcounted and its data only points to
a buffer owned by the AVCodecContext (in this case, the packet will
be made refcounted in encode_simple_internal() in libavcodec/encode.c).
The goal of this was to avoid data copies and intermediate buffers
if one has a precise lower bound.

Yet those encoders for which precise lower bounds exist have recently
been switched to ff_get_encode_buffer() (which automatically allocates
final buffers), leaving only two encoders to actually set the min_size
to something else than zero (namely aliaspixenc and hapenc). Both of
these encoders use a very low lower bound that is not helpful in any
nontrivial case.

This commit therefore removes the min_size parameter as well as the
codepath in ff_alloc_packet2() for the allocation of final buffers.
Furthermore, the function has been renamed to ff_alloc_packet() and
moved to encode.h alongside ff_get_encode_buffer().

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-06-08 12:52:50 +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 "cfhdencdsp.h"
#include "encode.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;
CFHDEncDSPContext dsp;
} 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) + 64) * 8;
w8 = FFALIGN(width / 8, 8) + 64;
h8 = FFALIGN(height, 8) / 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;
}
ff_cfhdencdsp_init(&s->dsp);
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 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;
CFHDEncDSPContext *dsp = &s->dsp;
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;
}
dsp->horiz_filter(input, low, high,
in_stride, a_width, a_width,
width * 2, height * 2);
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;
dsp->vert_filter(input, low, high,
a_width, low_stride, high_stride,
width, height * 2);
input = s->plane[plane].l_h[6];
low = s->plane[plane].l_h[7];
high = s->plane[plane].subband[8];
dsp->vert_filter(input, low, high,
a_width, low_stride, high_stride,
width, height * 2);
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];
dsp->horiz_filter(input, low, high,
a_width * 2, low_stride, high_stride,
width * 2, height * 2);
input = s->plane[plane].l_h[4];
low = s->plane[plane].subband[4];
high = s->plane[plane].subband[6];
dsp->vert_filter(input, low, high,
a_width, low_stride, high_stride,
width, height * 2);
input = s->plane[plane].l_h[3];
low = s->plane[plane].l_h[4];
high = s->plane[plane].subband[5];
dsp->vert_filter(input, low, high,
a_width, low_stride, high_stride,
width, height * 2);
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];
dsp->horiz_filter(input, low, high,
a_width * 2, low_stride, high_stride,
width * 2, height * 2);
low = s->plane[plane].subband[1];
high = s->plane[plane].subband[3];
input = s->plane[plane].l_h[1];
dsp->vert_filter(input, low, high,
a_width, low_stride, high_stride,
width, height * 2);
low = s->plane[plane].subband[0];
high = s->plane[plane].subband[2];
input = s->plane[plane].l_h[0];
dsp->vert_filter(input, low, high,
a_width, low_stride, high_stride,
width, height * 2);
}
ret = ff_alloc_packet(avctx, pkt, 64LL + s->planes * (2LL * avctx->width * avctx->height + 1000LL));
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, frame->pts & 0xFFFF);
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 = j >= width ? 0 : 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_bytes_output(pb));
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,
};
const 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
},
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
};
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