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FFmpeg/libavfilter/vf_fspp.c
Andreas Rheinhardt b4f5201967 avfilter: Replace query_formats callback with union of list and callback 
If one looks at the many query_formats callbacks in existence,
one will immediately recognize that there is one type of default
callback for video and a slightly different default callback for
audio: It is "return ff_set_common_formats_from_list(ctx, pix_fmts);"
for video with a filter-specific pix_fmts list. For audio, it is
the same with a filter-specific sample_fmts list together with
ff_set_common_all_samplerates() and ff_set_common_all_channel_counts().

This commit allows to remove the boilerplate query_formats callbacks
by replacing said callback with a union consisting the old callback
and pointers for pixel and sample format arrays. For the not uncommon
case in which these lists only contain a single entry (besides the
sentinel) enum AVPixelFormat and enum AVSampleFormat fields are also
added to the union to store them directly in the AVFilter,
thereby avoiding a relocation.

The state of said union will be contained in a new, dedicated AVFilter
field (the nb_inputs and nb_outputs fields have been shrunk to uint8_t
in order to create a hole for this new field; this is no problem, as
the maximum of all the nb_inputs is four; for nb_outputs it is only
two).

The state's default value coincides with the earlier default of
query_formats being unset, namely that the filter accepts all formats
(and also sample rates and channel counts/layouts for audio)
provided that these properties agree coincide for all inputs and
outputs.

By using different union members for audio and video filters
the type-unsafety of using the same functions for audio and video
lists will furthermore be more confined to formats.c than before.

When the new fields are used, they will also avoid allocations:
Currently something nearly equivalent to ff_default_query_formats()
is called after every successful call to a query_formats callback;
yet in the common case that the newly allocated AVFilterFormats
are not used at all (namely if there are no free links) these newly
allocated AVFilterFormats are freed again without ever being used.
Filters no longer using the callback will not exhibit this any more.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-10-05 17:48:25 +02:00

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/*
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
* Copyright (C) 2005 Nikolaj Poroshin <porosh3@psu.ru>
* Copyright (c) 2014 Arwa Arif <arwaarif1994@gmail.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU 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
* Fast Simple Post-processing filter
* This implementation is based on an algorithm described in
* "Aria Nosratinia Embedded Post-Processing for
* Enhancement of Compressed Images (1999)"
* (http://www.utdallas.edu/~aria/papers/vlsisp99.pdf)
* Further, with splitting (I)DCT into horizontal/vertical passes, one of
* them can be performed once per block, not per pixel. This allows for much
* higher speed.
*
* Originally written by Michael Niedermayer and Nikolaj for the MPlayer
* project, and ported by Arwa Arif for FFmpeg.
*/
#include "libavutil/imgutils.h"
#include "libavutil/mem_internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "internal.h"
#include "qp_table.h"
#include "vf_fspp.h"
#define OFFSET(x) offsetof(FSPPContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption fspp_options[] = {
{ "quality", "set quality", OFFSET(log2_count), AV_OPT_TYPE_INT, {.i64 = 4}, 4, MAX_LEVEL, FLAGS },
{ "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 64, FLAGS },
{ "strength", "set filter strength", OFFSET(strength), AV_OPT_TYPE_INT, {.i64 = 0}, -15, 32, FLAGS },
{ "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), AV_OPT_TYPE_BOOL,{.i64 = 0}, 0, 1, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(fspp);
DECLARE_ALIGNED(32, static const uint8_t, dither)[8][8] = {
{ 0, 48, 12, 60, 3, 51, 15, 63, },
{ 32, 16, 44, 28, 35, 19, 47, 31, },
{ 8, 56, 4, 52, 11, 59, 7, 55, },
{ 40, 24, 36, 20, 43, 27, 39, 23, },
{ 2, 50, 14, 62, 1, 49, 13, 61, },
{ 34, 18, 46, 30, 33, 17, 45, 29, },
{ 10, 58, 6, 54, 9, 57, 5, 53, },
{ 42, 26, 38, 22, 41, 25, 37, 21, },
};
static const short custom_threshold[64] = {
// values (296) can't be too high
// -it causes too big quant dependence
// or maybe overflow(check), which results in some flashing
71, 296, 295, 237, 71, 40, 38, 19,
245, 193, 185, 121, 102, 73, 53, 27,
158, 129, 141, 107, 97, 73, 50, 26,
102, 116, 109, 98, 82, 66, 45, 23,
71, 94, 95, 81, 70, 56, 38, 20,
56, 77, 74, 66, 56, 44, 30, 15,
38, 53, 50, 45, 38, 30, 21, 11,
20, 27, 26, 23, 20, 15, 11, 5
};
//This func reads from 1 slice, 1 and clears 0 & 1
static void store_slice_c(uint8_t *dst, int16_t *src,
ptrdiff_t dst_stride, ptrdiff_t src_stride,
ptrdiff_t width, ptrdiff_t height, ptrdiff_t log2_scale)
{
int y, x;
#define STORE(pos) \
temp = (src[x + pos] + (d[pos] >> log2_scale)) >> (6 - log2_scale); \
src[x + pos] = src[x + pos - 8 * src_stride] = 0; \
if (temp & 0x100) temp = ~(temp >> 31); \
dst[x + pos] = temp;
for (y = 0; y < height; y++) {
const uint8_t *d = dither[y];
for (x = 0; x < width; x += 8) {
int temp;
STORE(0);
STORE(1);
STORE(2);
STORE(3);
STORE(4);
STORE(5);
STORE(6);
STORE(7);
}
src += src_stride;
dst += dst_stride;
}
}
//This func reads from 2 slices, 0 & 2 and clears 2-nd
static void store_slice2_c(uint8_t *dst, int16_t *src,
ptrdiff_t dst_stride, ptrdiff_t src_stride,
ptrdiff_t width, ptrdiff_t height, ptrdiff_t log2_scale)
{
int y, x;
#define STORE2(pos) \
temp = (src[x + pos] + src[x + pos + 16 * src_stride] + (d[pos] >> log2_scale)) >> (6 - log2_scale); \
src[x + pos + 16 * src_stride] = 0; \
if (temp & 0x100) temp = ~(temp >> 31); \
dst[x + pos] = temp;
for (y = 0; y < height; y++) {
const uint8_t *d = dither[y];
for (x = 0; x < width; x += 8) {
int temp;
STORE2(0);
STORE2(1);
STORE2(2);
STORE2(3);
STORE2(4);
STORE2(5);
STORE2(6);
STORE2(7);
}
src += src_stride;
dst += dst_stride;
}
}
static void mul_thrmat_c(int16_t *thr_adr_noq, int16_t *thr_adr, int q)
{
int a;
for (a = 0; a < 64; a++)
thr_adr[a] = q * thr_adr_noq[a];
}
static void filter(FSPPContext *p, uint8_t *dst, uint8_t *src,
int dst_stride, int src_stride,
int width, int height,
uint8_t *qp_store, int qp_stride, int is_luma)
{
int x, x0, y, es, qy, t;
const int stride = is_luma ? p->temp_stride : (width + 16);
const int step = 6 - p->log2_count;
const int qpsh = 4 - p->hsub * !is_luma;
const int qpsv = 4 - p->vsub * !is_luma;
DECLARE_ALIGNED(32, int32_t, block_align)[4 * 8 * BLOCKSZ + 4 * 8 * BLOCKSZ];
int16_t *block = (int16_t *)block_align;
int16_t *block3 = (int16_t *)(block_align + 4 * 8 * BLOCKSZ);
memset(block3, 0, 4 * 8 * BLOCKSZ);
if (!src || !dst) return;
for (y = 0; y < height; y++) {
int index = 8 + 8 * stride + y * stride;
memcpy(p->src + index, src + y * src_stride, width);
for (x = 0; x < 8; x++) {
p->src[index - x - 1] = p->src[index + x ];
p->src[index + width + x ] = p->src[index + width - x - 1];
}
}
for (y = 0; y < 8; y++) {
memcpy(p->src + ( 7 - y ) * stride, p->src + ( y + 8 ) * stride, stride);
memcpy(p->src + (height + 8 + y) * stride, p->src + (height - y + 7) * stride, stride);
}
//FIXME (try edge emu)
for (y = 8; y < 24; y++)
memset(p->temp + 8 + y * stride, 0, width * sizeof(int16_t));
for (y = step; y < height + 8; y += step) { //step= 1,2
const int y1 = y - 8 + step; //l5-7 l4-6;
qy = y - 4;
if (qy > height - 1) qy = height - 1;
if (qy < 0) qy = 0;
qy = (qy >> qpsv) * qp_stride;
p->row_fdct(block, p->src + y * stride + 2 - (y&1), stride, 2);
for (x0 = 0; x0 < width + 8 - 8 * (BLOCKSZ - 1); x0 += 8 * (BLOCKSZ - 1)) {
p->row_fdct(block + 8 * 8, p->src + y * stride + 8 + x0 + 2 - (y&1), stride, 2 * (BLOCKSZ - 1));
if (p->qp)
p->column_fidct((int16_t *)(&p->threshold_mtx[0]), block + 0 * 8, block3 + 0 * 8, 8 * (BLOCKSZ - 1)); //yes, this is a HOTSPOT
else
for (x = 0; x < 8 * (BLOCKSZ - 1); x += 8) {
t = x + x0 - 2; //correct t=x+x0-2-(y&1), but its the same
if (t < 0) t = 0; //t always < width-2
t = qp_store[qy + (t >> qpsh)];
t = ff_norm_qscale(t, p->qscale_type);
if (t != p->prev_q) p->prev_q = t, p->mul_thrmat((int16_t *)(&p->threshold_mtx_noq[0]), (int16_t *)(&p->threshold_mtx[0]), t);
p->column_fidct((int16_t *)(&p->threshold_mtx[0]), block + x * 8, block3 + x * 8, 8); //yes, this is a HOTSPOT
}
p->row_idct(block3 + 0 * 8, p->temp + (y & 15) * stride + x0 + 2 - (y & 1), stride, 2 * (BLOCKSZ - 1));
memmove(block, block + (BLOCKSZ - 1) * 64, 8 * 8 * sizeof(int16_t)); //cycling
memmove(block3, block3 + (BLOCKSZ - 1) * 64, 6 * 8 * sizeof(int16_t));
}
es = width + 8 - x0; // 8, ...
if (es > 8)
p->row_fdct(block + 8 * 8, p->src + y * stride + 8 + x0 + 2 - (y & 1), stride, (es - 4) >> 2);
p->column_fidct((int16_t *)(&p->threshold_mtx[0]), block, block3, es&(~1));
if (es > 3)
p->row_idct(block3 + 0 * 8, p->temp + (y & 15) * stride + x0 + 2 - (y & 1), stride, es >> 2);
if (!(y1 & 7) && y1) {
if (y1 & 8)
p->store_slice(dst + (y1 - 8) * dst_stride, p->temp + 8 + 8 * stride,
dst_stride, stride, width, 8, 5 - p->log2_count);
else
p->store_slice2(dst + (y1 - 8) * dst_stride, p->temp + 8 + 0 * stride,
dst_stride, stride, width, 8, 5 - p->log2_count);
}
}
if (y & 7) { // height % 8 != 0
if (y & 8)
p->store_slice(dst + ((y - 8) & ~7) * dst_stride, p->temp + 8 + 8 * stride,
dst_stride, stride, width, y&7, 5 - p->log2_count);
else
p->store_slice2(dst + ((y - 8) & ~7) * dst_stride, p->temp + 8 + 0 * stride,
dst_stride, stride, width, y&7, 5 - p->log2_count);
}
}
static void column_fidct_c(int16_t *thr_adr, int16_t *data, int16_t *output, int cnt)
{
int_simd16_t tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
int_simd16_t tmp10, tmp11, tmp12, tmp13;
int_simd16_t z1,z2,z3,z4,z5, z10, z11, z12, z13;
int_simd16_t d0, d1, d2, d3, d4, d5, d6, d7;
int16_t *dataptr;
int16_t *wsptr;
int16_t *threshold;
int ctr;
dataptr = data;
wsptr = output;
for (; cnt > 0; cnt -= 2) { //start positions
threshold = (int16_t *)thr_adr;//threshold_mtx
for (ctr = DCTSIZE; ctr > 0; ctr--) {
// Process columns from input, add to output.
tmp0 = dataptr[DCTSIZE * 0] + dataptr[DCTSIZE * 7];
tmp7 = dataptr[DCTSIZE * 0] - dataptr[DCTSIZE * 7];
tmp1 = dataptr[DCTSIZE * 1] + dataptr[DCTSIZE * 6];
tmp6 = dataptr[DCTSIZE * 1] - dataptr[DCTSIZE * 6];
tmp2 = dataptr[DCTSIZE * 2] + dataptr[DCTSIZE * 5];
tmp5 = dataptr[DCTSIZE * 2] - dataptr[DCTSIZE * 5];
tmp3 = dataptr[DCTSIZE * 3] + dataptr[DCTSIZE * 4];
tmp4 = dataptr[DCTSIZE * 3] - dataptr[DCTSIZE * 4];
// Even part of FDCT
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp1 + tmp2;
tmp12 = tmp1 - tmp2;
d0 = tmp10 + tmp11;
d4 = tmp10 - tmp11;
z1 = MULTIPLY16H((tmp12 + tmp13) << 2, FIX_0_707106781);
d2 = tmp13 + z1;
d6 = tmp13 - z1;
// Even part of IDCT
THRESHOLD(tmp0, d0, threshold[0 * 8]);
THRESHOLD(tmp1, d2, threshold[2 * 8]);
THRESHOLD(tmp2, d4, threshold[4 * 8]);
THRESHOLD(tmp3, d6, threshold[6 * 8]);
tmp0 += 2;
tmp10 = (tmp0 + tmp2) >> 2;
tmp11 = (tmp0 - tmp2) >> 2;
tmp13 = (tmp1 + tmp3) >>2; //+2 ! (psnr decides)
tmp12 = MULTIPLY16H((tmp1 - tmp3), FIX_1_414213562_A) - tmp13; //<<2
tmp0 = tmp10 + tmp13; //->temps
tmp3 = tmp10 - tmp13; //->temps
tmp1 = tmp11 + tmp12; //->temps
tmp2 = tmp11 - tmp12; //->temps
// Odd part of FDCT
tmp10 = tmp4 + tmp5;
tmp11 = tmp5 + tmp6;
tmp12 = tmp6 + tmp7;
z5 = MULTIPLY16H((tmp10 - tmp12) << 2, FIX_0_382683433);
z2 = MULTIPLY16H(tmp10 << 2, FIX_0_541196100) + z5;
z4 = MULTIPLY16H(tmp12 << 2, FIX_1_306562965) + z5;
z3 = MULTIPLY16H(tmp11 << 2, FIX_0_707106781);
z11 = tmp7 + z3;
z13 = tmp7 - z3;
d5 = z13 + z2;
d3 = z13 - z2;
d1 = z11 + z4;
d7 = z11 - z4;
// Odd part of IDCT
THRESHOLD(tmp4, d1, threshold[1 * 8]);
THRESHOLD(tmp5, d3, threshold[3 * 8]);
THRESHOLD(tmp6, d5, threshold[5 * 8]);
THRESHOLD(tmp7, d7, threshold[7 * 8]);
//Simd version uses here a shortcut for the tmp5,tmp6,tmp7 == 0
z13 = tmp6 + tmp5;
z10 = (tmp6 - tmp5) << 1;
z11 = tmp4 + tmp7;
z12 = (tmp4 - tmp7) << 1;
tmp7 = (z11 + z13) >> 2; //+2 !
tmp11 = MULTIPLY16H((z11 - z13) << 1, FIX_1_414213562);
z5 = MULTIPLY16H(z10 + z12, FIX_1_847759065);
tmp10 = MULTIPLY16H(z12, FIX_1_082392200) - z5;
tmp12 = MULTIPLY16H(z10, FIX_2_613125930) + z5; // - !!
tmp6 = tmp12 - tmp7;
tmp5 = tmp11 - tmp6;
tmp4 = tmp10 + tmp5;
wsptr[DCTSIZE * 0] += (tmp0 + tmp7);
wsptr[DCTSIZE * 1] += (tmp1 + tmp6);
wsptr[DCTSIZE * 2] += (tmp2 + tmp5);
wsptr[DCTSIZE * 3] += (tmp3 - tmp4);
wsptr[DCTSIZE * 4] += (tmp3 + tmp4);
wsptr[DCTSIZE * 5] += (tmp2 - tmp5);
wsptr[DCTSIZE * 6] = (tmp1 - tmp6);
wsptr[DCTSIZE * 7] = (tmp0 - tmp7);
//
dataptr++; //next column
wsptr++;
threshold++;
}
dataptr += 8; //skip each second start pos
wsptr += 8;
}
}
static void row_idct_c(int16_t *workspace, int16_t *output_adr, ptrdiff_t output_stride, int cnt)
{
int_simd16_t tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
int_simd16_t tmp10, tmp11, tmp12, tmp13;
int_simd16_t z5, z10, z11, z12, z13;
int16_t *outptr;
int16_t *wsptr;
cnt *= 4;
wsptr = workspace;
outptr = output_adr;
for (; cnt > 0; cnt--) {
// Even part
//Simd version reads 4x4 block and transposes it
tmp10 = wsptr[2] + wsptr[3];
tmp11 = wsptr[2] - wsptr[3];
tmp13 = wsptr[0] + wsptr[1];
tmp12 = (MULTIPLY16H(wsptr[0] - wsptr[1], FIX_1_414213562_A) << 2) - tmp13;//this shift order to avoid overflow
tmp0 = tmp10 + tmp13; //->temps
tmp3 = tmp10 - tmp13; //->temps
tmp1 = tmp11 + tmp12;
tmp2 = tmp11 - tmp12;
// Odd part
//Also transpose, with previous:
// ---- ---- ||||
// ---- ---- idct ||||
// ---- ---- ---> ||||
// ---- ---- ||||
z13 = wsptr[4] + wsptr[5];
z10 = wsptr[4] - wsptr[5];
z11 = wsptr[6] + wsptr[7];
z12 = wsptr[6] - wsptr[7];
tmp7 = z11 + z13;
tmp11 = MULTIPLY16H(z11 - z13, FIX_1_414213562);
z5 = MULTIPLY16H(z10 + z12, FIX_1_847759065);
tmp10 = MULTIPLY16H(z12, FIX_1_082392200) - z5;
tmp12 = MULTIPLY16H(z10, FIX_2_613125930) + z5; // - FIX_
tmp6 = (tmp12 << 3) - tmp7;
tmp5 = (tmp11 << 3) - tmp6;
tmp4 = (tmp10 << 3) + tmp5;
// Final output stage: descale and write column
outptr[0 * output_stride] += DESCALE(tmp0 + tmp7, 3);
outptr[1 * output_stride] += DESCALE(tmp1 + tmp6, 3);
outptr[2 * output_stride] += DESCALE(tmp2 + tmp5, 3);
outptr[3 * output_stride] += DESCALE(tmp3 - tmp4, 3);
outptr[4 * output_stride] += DESCALE(tmp3 + tmp4, 3);
outptr[5 * output_stride] += DESCALE(tmp2 - tmp5, 3);
outptr[6 * output_stride] += DESCALE(tmp1 - tmp6, 3); //no += ?
outptr[7 * output_stride] += DESCALE(tmp0 - tmp7, 3); //no += ?
outptr++;
wsptr += DCTSIZE; // advance pointer to next row
}
}
static void row_fdct_c(int16_t *data, const uint8_t *pixels, ptrdiff_t line_size, int cnt)
{
int_simd16_t tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
int_simd16_t tmp10, tmp11, tmp12, tmp13;
int_simd16_t z1, z2, z3, z4, z5, z11, z13;
int16_t *dataptr;
cnt *= 4;
// Pass 1: process rows.
dataptr = data;
for (; cnt > 0; cnt--) {
tmp0 = pixels[line_size * 0] + pixels[line_size * 7];
tmp7 = pixels[line_size * 0] - pixels[line_size * 7];
tmp1 = pixels[line_size * 1] + pixels[line_size * 6];
tmp6 = pixels[line_size * 1] - pixels[line_size * 6];
tmp2 = pixels[line_size * 2] + pixels[line_size * 5];
tmp5 = pixels[line_size * 2] - pixels[line_size * 5];
tmp3 = pixels[line_size * 3] + pixels[line_size * 4];
tmp4 = pixels[line_size * 3] - pixels[line_size * 4];
// Even part
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp1 + tmp2;
tmp12 = tmp1 - tmp2;
//Even columns are written first, this leads to different order of columns
//in column_fidct(), but they are processed independently, so all ok.
//Later in the row_idct() columns readed at the same order.
dataptr[2] = tmp10 + tmp11;
dataptr[3] = tmp10 - tmp11;
z1 = MULTIPLY16H((tmp12 + tmp13) << 2, FIX_0_707106781);
dataptr[0] = tmp13 + z1;
dataptr[1] = tmp13 - z1;
// Odd part
tmp10 = (tmp4 + tmp5) << 2;
tmp11 = (tmp5 + tmp6) << 2;
tmp12 = (tmp6 + tmp7) << 2;
z5 = MULTIPLY16H(tmp10 - tmp12, FIX_0_382683433);
z2 = MULTIPLY16H(tmp10, FIX_0_541196100) + z5;
z4 = MULTIPLY16H(tmp12, FIX_1_306562965) + z5;
z3 = MULTIPLY16H(tmp11, FIX_0_707106781);
z11 = tmp7 + z3;
z13 = tmp7 - z3;
dataptr[4] = z13 + z2;
dataptr[5] = z13 - z2;
dataptr[6] = z11 + z4;
dataptr[7] = z11 - z4;
pixels++; // advance pointer to next column
dataptr += DCTSIZE;
}
}
static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ440P,
AV_PIX_FMT_GBRP, AV_PIX_FMT_GRAY8,
AV_PIX_FMT_NONE
};
return ff_set_common_formats_from_list(ctx, pix_fmts);
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
FSPPContext *fspp = ctx->priv;
const int h = FFALIGN(inlink->h + 16, 16);
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
fspp->hsub = desc->log2_chroma_w;
fspp->vsub = desc->log2_chroma_h;
fspp->temp_stride = FFALIGN(inlink->w + 16, 16);
fspp->temp = av_malloc_array(fspp->temp_stride, h * sizeof(*fspp->temp));
fspp->src = av_malloc_array(fspp->temp_stride, h * sizeof(*fspp->src));
if (!fspp->temp || !fspp->src)
return AVERROR(ENOMEM);
fspp->store_slice = store_slice_c;
fspp->store_slice2 = store_slice2_c;
fspp->mul_thrmat = mul_thrmat_c;
fspp->column_fidct = column_fidct_c;
fspp->row_idct = row_idct_c;
fspp->row_fdct = row_fdct_c;
if (ARCH_X86)
ff_fspp_init_x86(fspp);
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
FSPPContext *fspp = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out = in;
int qp_stride = 0;
int8_t *qp_table = NULL;
int i, bias;
int ret = 0;
int custom_threshold_m[64];
bias = (1 << 4) + fspp->strength;
for (i = 0; i < 64; i++) //FIXME: tune custom_threshold[] and remove this !
custom_threshold_m[i] = (int)(custom_threshold[i] * (bias / 71.0) + 0.5);
for (i = 0; i < 8; i++) {
fspp->threshold_mtx_noq[2 * i] = (uint64_t)custom_threshold_m[i * 8 + 2]
|(((uint64_t)custom_threshold_m[i * 8 + 6]) << 16)
|(((uint64_t)custom_threshold_m[i * 8 + 0]) << 32)
|(((uint64_t)custom_threshold_m[i * 8 + 4]) << 48);
fspp->threshold_mtx_noq[2 * i + 1] = (uint64_t)custom_threshold_m[i * 8 + 5]
|(((uint64_t)custom_threshold_m[i * 8 + 3]) << 16)
|(((uint64_t)custom_threshold_m[i * 8 + 1]) << 32)
|(((uint64_t)custom_threshold_m[i * 8 + 7]) << 48);
}
if (fspp->qp)
fspp->prev_q = fspp->qp, fspp->mul_thrmat((int16_t *)(&fspp->threshold_mtx_noq[0]), (int16_t *)(&fspp->threshold_mtx[0]), fspp->qp);
/* if we are not in a constant user quantizer mode and we don't want to use
* the quantizers from the B-frames (B-frames often have a higher QP), we
* need to save the qp table from the last non B-frame; this is what the
* following code block does */
if (!fspp->qp && (fspp->use_bframe_qp || in->pict_type != AV_PICTURE_TYPE_B)) {
ret = ff_qp_table_extract(in, &qp_table, &qp_stride, NULL, &fspp->qscale_type);
if (ret < 0) {
av_frame_free(&in);
return ret;
}
if (!fspp->use_bframe_qp && in->pict_type != AV_PICTURE_TYPE_B) {
av_freep(&fspp->non_b_qp_table);
fspp->non_b_qp_table = qp_table;
fspp->non_b_qp_stride = qp_stride;
}
}
if (fspp->log2_count && !ctx->is_disabled) {
if (!fspp->use_bframe_qp && fspp->non_b_qp_table) {
qp_table = fspp->non_b_qp_table;
qp_stride = fspp->non_b_qp_stride;
}
if (qp_table || fspp->qp) {
const int cw = AV_CEIL_RSHIFT(inlink->w, fspp->hsub);
const int ch = AV_CEIL_RSHIFT(inlink->h, fspp->vsub);
/* get a new frame if in-place is not possible or if the dimensions
* are not multiple of 8 */
if (!av_frame_is_writable(in) || (inlink->w & 7) || (inlink->h & 7)) {
const int aligned_w = FFALIGN(inlink->w, 8);
const int aligned_h = FFALIGN(inlink->h, 8);
out = ff_get_video_buffer(outlink, aligned_w, aligned_h);
if (!out) {
av_frame_free(&in);
ret = AVERROR(ENOMEM);
goto finish;
}
av_frame_copy_props(out, in);
out->width = in->width;
out->height = in->height;
}
filter(fspp, out->data[0], in->data[0], out->linesize[0], in->linesize[0],
inlink->w, inlink->h, qp_table, qp_stride, 1);
filter(fspp, out->data[1], in->data[1], out->linesize[1], in->linesize[1],
cw, ch, qp_table, qp_stride, 0);
filter(fspp, out->data[2], in->data[2], out->linesize[2], in->linesize[2],
cw, ch, qp_table, qp_stride, 0);
emms_c();
}
}
if (in != out) {
if (in->data[3])
av_image_copy_plane(out->data[3], out->linesize[3],
in ->data[3], in ->linesize[3],
inlink->w, inlink->h);
av_frame_free(&in);
}
ret = ff_filter_frame(outlink, out);
finish:
if (qp_table != fspp->non_b_qp_table)
av_freep(&qp_table);
return ret;
}
static av_cold void uninit(AVFilterContext *ctx)
{
FSPPContext *fspp = ctx->priv;
av_freep(&fspp->temp);
av_freep(&fspp->src);
av_freep(&fspp->non_b_qp_table);
}
static const AVFilterPad fspp_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
.filter_frame = filter_frame,
},
};
static const AVFilterPad fspp_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
};
const AVFilter ff_vf_fspp = {
.name = "fspp",
.description = NULL_IF_CONFIG_SMALL("Apply Fast Simple Post-processing filter."),
.priv_size = sizeof(FSPPContext),
.uninit = uninit,
FILTER_INPUTS(fspp_inputs),
FILTER_OUTPUTS(fspp_outputs),
FILTER_QUERY_FUNC(query_formats),
.priv_class = &fspp_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};
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