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FFmpeg/libavfilter/vf_uspp.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) 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
* Ultra Slow/Simple Post-processing filter.
*
* Originally written by Michael Niedermayer for the MPlayer project, and
* ported by Arwa Arif for FFmpeg.
*/
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem_internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavcodec/avcodec.h"
#include "internal.h"
#include "qp_table.h"
#include "avfilter.h"
#define MAX_LEVEL 8 /* quality levels */
#define BLOCK 16
typedef struct USPPContext {
const AVClass *av_class;
int log2_count;
int hsub, vsub;
int qp;
int qscale_type;
int temp_stride[3];
uint8_t *src[3];
uint16_t *temp[3];
int outbuf_size;
uint8_t *outbuf;
AVCodecContext *avctx_enc[BLOCK*BLOCK];
AVPacket *pkt;
AVFrame *frame;
AVFrame *frame_dec;
int8_t *non_b_qp_table;
int non_b_qp_stride;
int use_bframe_qp;
} USPPContext;
#define OFFSET(x) offsetof(USPPContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption uspp_options[] = {
{ "quality", "set quality", OFFSET(log2_count), AV_OPT_TYPE_INT, {.i64 = 3}, 0, MAX_LEVEL, FLAGS },
{ "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, 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(uspp);
DECLARE_ALIGNED(8, static const uint8_t, dither)[8][8] = {
{ 0*4, 48*4, 12*4, 60*4, 3*4, 51*4, 15*4, 63*4, },
{ 32*4, 16*4, 44*4, 28*4, 35*4, 19*4, 47*4, 31*4, },
{ 8*4, 56*4, 4*4, 52*4, 11*4, 59*4, 7*4, 55*4, },
{ 40*4, 24*4, 36*4, 20*4, 43*4, 27*4, 39*4, 23*4, },
{ 2*4, 50*4, 14*4, 62*4, 1*4, 49*4, 13*4, 61*4, },
{ 34*4, 18*4, 46*4, 30*4, 33*4, 17*4, 45*4, 29*4, },
{ 10*4, 58*4, 6*4, 54*4, 9*4, 57*4, 5*4, 53*4, },
{ 42*4, 26*4, 38*4, 22*4, 41*4, 25*4, 37*4, 21*4, },
};
static const uint8_t offset[511][2] = {
{ 0, 0},
{ 0, 0}, { 8, 8}, // quality 1
{ 0, 0}, { 4, 4}, {12, 8}, { 8,12}, // quality 2
{ 0, 0}, {10, 2}, { 4, 4}, {14, 6}, { 8, 8}, { 2,10}, {12,12}, { 6,14}, // quality 3
{ 0, 0}, {10, 2}, { 4, 4}, {14, 6}, { 8, 8}, { 2,10}, {12,12}, { 6,14},
{ 5, 1}, {15, 3}, { 9, 5}, { 3, 7}, {13, 9}, { 7,11}, { 1,13}, {11,15}, // quality 4
{ 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
{ 2, 2}, {10, 2}, { 2,10}, {10,10}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
{ 4, 4}, {12, 4}, { 4,12}, {12,12}, { 1, 5}, { 9, 5}, { 1,13}, { 9,13},
{ 6, 6}, {14, 6}, { 6,14}, {14,14}, { 3, 7}, {11, 7}, { 3,15}, {11,15}, // quality 5
{ 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 4, 0}, {12, 0}, { 4, 8}, {12, 8},
{ 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
{ 3, 2}, {11, 2}, { 3,10}, {11,10}, { 7, 2}, {15, 2}, { 7,10}, {15,10},
{ 2, 3}, {10, 3}, { 2,11}, {10,11}, { 6, 3}, {14, 3}, { 6,11}, {14,11},
{ 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 4, 4}, {12, 4}, { 4,12}, {12,12},
{ 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 5, 5}, {13, 5}, { 5,13}, {13,13},
{ 3, 6}, {11, 6}, { 3,14}, {11,14}, { 7, 6}, {15, 6}, { 7,14}, {15,14},
{ 2, 7}, {10, 7}, { 2,15}, {10,15}, { 6, 7}, {14, 7}, { 6,15}, {14,15}, // quality 6
{ 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 0, 2}, { 8, 2}, { 0,10}, { 8,10},
{ 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 0, 6}, { 8, 6}, { 0,14}, { 8,14},
{ 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 1, 3}, { 9, 3}, { 1,11}, { 9,11},
{ 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 1, 7}, { 9, 7}, { 1,15}, { 9,15},
{ 2, 0}, {10, 0}, { 2, 8}, {10, 8}, { 2, 2}, {10, 2}, { 2,10}, {10,10},
{ 2, 4}, {10, 4}, { 2,12}, {10,12}, { 2, 6}, {10, 6}, { 2,14}, {10,14},
{ 3, 1}, {11, 1}, { 3, 9}, {11, 9}, { 3, 3}, {11, 3}, { 3,11}, {11,11},
{ 3, 5}, {11, 5}, { 3,13}, {11,13}, { 3, 7}, {11, 7}, { 3,15}, {11,15},
{ 4, 0}, {12, 0}, { 4, 8}, {12, 8}, { 4, 2}, {12, 2}, { 4,10}, {12,10},
{ 4, 4}, {12, 4}, { 4,12}, {12,12}, { 4, 6}, {12, 6}, { 4,14}, {12,14},
{ 5, 1}, {13, 1}, { 5, 9}, {13, 9}, { 5, 3}, {13, 3}, { 5,11}, {13,11},
{ 5, 5}, {13, 5}, { 5,13}, {13,13}, { 5, 7}, {13, 7}, { 5,15}, {13,15},
{ 6, 0}, {14, 0}, { 6, 8}, {14, 8}, { 6, 2}, {14, 2}, { 6,10}, {14,10},
{ 6, 4}, {14, 4}, { 6,12}, {14,12}, { 6, 6}, {14, 6}, { 6,14}, {14,14},
{ 7, 1}, {15, 1}, { 7, 9}, {15, 9}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
{ 7, 5}, {15, 5}, { 7,13}, {15,13}, { 7, 7}, {15, 7}, { 7,15}, {15,15}, // quality 7
{ 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 4, 4}, {12, 4}, { 4,12}, {12,12},
{ 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 4, 0}, {12, 0}, { 4, 8}, {12, 8},
{ 2, 2}, {10, 2}, { 2,10}, {10,10}, { 6, 6}, {14, 6}, { 6,14}, {14,14},
{ 2, 6}, {10, 6}, { 2,14}, {10,14}, { 6, 2}, {14, 2}, { 6,10}, {14,10},
{ 0, 2}, { 8, 2}, { 0,10}, { 8,10}, { 4, 6}, {12, 6}, { 4,14}, {12,14},
{ 0, 6}, { 8, 6}, { 0,14}, { 8,14}, { 4, 2}, {12, 2}, { 4,10}, {12,10},
{ 2, 0}, {10, 0}, { 2, 8}, {10, 8}, { 6, 4}, {14, 4}, { 6,12}, {14,12},
{ 2, 4}, {10, 4}, { 2,12}, {10,12}, { 6, 0}, {14, 0}, { 6, 8}, {14, 8},
{ 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 5, 5}, {13, 5}, { 5,13}, {13,13},
{ 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
{ 3, 3}, {11, 3}, { 3,11}, {11,11}, { 7, 7}, {15, 7}, { 7,15}, {15,15},
{ 3, 7}, {11, 7}, { 3,15}, {11,15}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
{ 1, 3}, { 9, 3}, { 1,11}, { 9,11}, { 5, 7}, {13, 7}, { 5,15}, {13,15},
{ 1, 7}, { 9, 7}, { 1,15}, { 9,15}, { 5, 3}, {13, 3}, { 5,11}, {13,11}, // quality 8
{ 3, 1}, {11, 1}, { 3, 9}, {11, 9}, { 7, 5}, {15, 5}, { 7,13}, {15,13},
{ 3, 5}, {11, 5}, { 3,13}, {11,13}, { 7, 1}, {15, 1}, { 7, 9}, {15, 9},
{ 0, 1}, { 8, 1}, { 0, 9}, { 8, 9}, { 4, 5}, {12, 5}, { 4,13}, {12,13},
{ 0, 5}, { 8, 5}, { 0,13}, { 8,13}, { 4, 1}, {12, 1}, { 4, 9}, {12, 9},
{ 2, 3}, {10, 3}, { 2,11}, {10,11}, { 6, 7}, {14, 7}, { 6,15}, {14,15},
{ 2, 7}, {10, 7}, { 2,15}, {10,15}, { 6, 3}, {14, 3}, { 6,11}, {14,11},
{ 0, 3}, { 8, 3}, { 0,11}, { 8,11}, { 4, 7}, {12, 7}, { 4,15}, {12,15},
{ 0, 7}, { 8, 7}, { 0,15}, { 8,15}, { 4, 3}, {12, 3}, { 4,11}, {12,11},
{ 2, 1}, {10, 1}, { 2, 9}, {10, 9}, { 6, 5}, {14, 5}, { 6,13}, {14,13},
{ 2, 5}, {10, 5}, { 2,13}, {10,13}, { 6, 1}, {14, 1}, { 6, 9}, {14, 9},
{ 1, 0}, { 9, 0}, { 1, 8}, { 9, 8}, { 5, 4}, {13, 4}, { 5,12}, {13,12},
{ 1, 4}, { 9, 4}, { 1,12}, { 9,12}, { 5, 0}, {13, 0}, { 5, 8}, {13, 8},
{ 3, 2}, {11, 2}, { 3,10}, {11,10}, { 7, 6}, {15, 6}, { 7,14}, {15,14},
{ 3, 6}, {11, 6}, { 3,14}, {11,14}, { 7, 2}, {15, 2}, { 7,10}, {15,10},
{ 1, 2}, { 9, 2}, { 1,10}, { 9,10}, { 5, 6}, {13, 6}, { 5,14}, {13,14},
{ 1, 6}, { 9, 6}, { 1,14}, { 9,14}, { 5, 2}, {13, 2}, { 5,10}, {13,10},
{ 3, 0}, {11, 0}, { 3, 8}, {11, 8}, { 7, 4}, {15, 4}, { 7,12}, {15,12},
{ 3, 4}, {11, 4}, { 3,12}, {11,12}, { 7, 0}, {15, 0}, { 7, 8}, {15, 8},
};
static void store_slice_c(uint8_t *dst, const uint16_t *src,
int dst_stride, int src_stride,
int width, int height, int log2_scale)
{
int y, x;
#define STORE(pos) do { \
temp = ((src[x + y * src_stride + pos] << log2_scale) + d[pos]) >> 8; \
if (temp & 0x100) temp = ~(temp >> 31); \
dst[x + y * dst_stride + pos] = temp; \
} while (0)
for (y = 0; y < height; y++) {
const uint8_t *d = dither[y&7];
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);
}
}
}
static void filter(USPPContext *p, uint8_t *dst[3], uint8_t *src[3],
int dst_stride[3], int src_stride[3], int width,
int height, uint8_t *qp_store, int qp_stride)
{
int x, y, i, j;
const int count = 1<<p->log2_count;
int ret;
for (i = 0; i < 3; i++) {
int is_chroma = !!i;
int w = AV_CEIL_RSHIFT(width, is_chroma ? p->hsub : 0);
int h = AV_CEIL_RSHIFT(height, is_chroma ? p->vsub : 0);
int stride = p->temp_stride[i];
int block = BLOCK >> (is_chroma ? p->hsub : 0);
if (!src[i] || !dst[i])
continue;
for (y = 0; y < h; y++) {
int index = block + block * stride + y * stride;
memcpy(p->src[i] + index, src[i] + y * src_stride[i], w );
for (x = 0; x < block; x++) {
p->src[i][index - x - 1] = p->src[i][index + x ];
p->src[i][index + w + x ] = p->src[i][index + w - x - 1];
}
}
for (y = 0; y < block; y++) {
memcpy(p->src[i] + ( block-1-y) * stride, p->src[i] + ( y+block ) * stride, stride);
memcpy(p->src[i] + (h+block +y) * stride, p->src[i] + (h-y+block-1) * stride, stride);
}
p->frame->linesize[i] = stride;
memset(p->temp[i], 0, (h + 2 * block) * stride * sizeof(int16_t));
}
if (p->qp)
p->frame->quality = p->qp * FF_QP2LAMBDA;
else {
int qpsum=0;
int qpcount = (height>>4) * (height>>4);
for (y = 0; y < (height>>4); y++) {
for (x = 0; x < (width>>4); x++)
qpsum += qp_store[x + y * qp_stride];
}
p->frame->quality = ff_norm_qscale((qpsum + qpcount/2) / qpcount, p->qscale_type) * FF_QP2LAMBDA;
}
// init per MB qscale stuff FIXME
p->frame->height = height + BLOCK;
p->frame->width = width + BLOCK;
for (i = 0; i < count; i++) {
const int x1 = offset[i+count-1][0];
const int y1 = offset[i+count-1][1];
const int x1c = x1 >> p->hsub;
const int y1c = y1 >> p->vsub;
const int BLOCKc = BLOCK >> p->hsub;
int offset;
AVPacket *pkt = p->pkt;
int got_pkt_ptr;
av_packet_unref(pkt);
pkt->data = p->outbuf;
pkt->size = p->outbuf_size;
p->frame->data[0] = p->src[0] + x1 + y1 * p->frame->linesize[0];
p->frame->data[1] = p->src[1] + x1c + y1c * p->frame->linesize[1];
p->frame->data[2] = p->src[2] + x1c + y1c * p->frame->linesize[2];
p->frame->format = p->avctx_enc[i]->pix_fmt;
ret = avcodec_encode_video2(p->avctx_enc[i], pkt, p->frame, &got_pkt_ptr);
if (ret < 0) {
av_log(p->avctx_enc[i], AV_LOG_ERROR, "Encoding failed\n");
continue;
}
av_packet_unref(pkt);
p->frame_dec = p->avctx_enc[i]->coded_frame;
offset = (BLOCK-x1) + (BLOCK-y1) * p->frame_dec->linesize[0];
for (y = 0; y < height; y++)
for (x = 0; x < width; x++)
p->temp[0][x + y * p->temp_stride[0]] += p->frame_dec->data[0][x + y * p->frame_dec->linesize[0] + offset];
if (!src[2] || !dst[2])
continue;
offset = (BLOCKc-x1c) + (BLOCKc-y1c) * p->frame_dec->linesize[1];
for (y = 0; y < AV_CEIL_RSHIFT(height, p->vsub); y++) {
for (x = 0; x < AV_CEIL_RSHIFT(width, p->hsub); x++) {
p->temp[1][x + y * p->temp_stride[1]] += p->frame_dec->data[1][x + y * p->frame_dec->linesize[1] + offset];
p->temp[2][x + y * p->temp_stride[2]] += p->frame_dec->data[2][x + y * p->frame_dec->linesize[2] + offset];
}
}
}
for (j = 0; j < 3; j++) {
int is_chroma = !!j;
if (!dst[j])
continue;
store_slice_c(dst[j], p->temp[j], dst_stride[j], p->temp_stride[j],
AV_CEIL_RSHIFT(width, is_chroma ? p->hsub : 0),
AV_CEIL_RSHIFT(height, is_chroma ? p->vsub : 0),
8-p->log2_count);
}
}
static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUV410P,
AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_YUVJ420P,
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;
USPPContext *uspp = ctx->priv;
const int height = inlink->h;
const int width = inlink->w;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int i;
const AVCodec *enc = avcodec_find_encoder(AV_CODEC_ID_SNOW);
if (!enc) {
av_log(ctx, AV_LOG_ERROR, "SNOW encoder not found.\n");
return AVERROR(EINVAL);
}
uspp->hsub = desc->log2_chroma_w;
uspp->vsub = desc->log2_chroma_h;
for (i = 0; i < 3; i++) {
int is_chroma = !!i;
int w = (width + 4 * BLOCK-1) & (~(2 * BLOCK-1));
int h = (height + 4 * BLOCK-1) & (~(2 * BLOCK-1));
if (is_chroma) {
w = AV_CEIL_RSHIFT(w, uspp->hsub);
h = AV_CEIL_RSHIFT(h, uspp->vsub);
}
uspp->temp_stride[i] = w;
if (!(uspp->temp[i] = av_malloc_array(uspp->temp_stride[i], h * sizeof(int16_t))))
return AVERROR(ENOMEM);
if (!(uspp->src [i] = av_malloc_array(uspp->temp_stride[i], h * sizeof(uint8_t))))
return AVERROR(ENOMEM);
}
for (i = 0; i < (1<<uspp->log2_count); i++) {
AVCodecContext *avctx_enc;
AVDictionary *opts = NULL;
int ret;
if (!(uspp->avctx_enc[i] = avcodec_alloc_context3(NULL)))
return AVERROR(ENOMEM);
avctx_enc = uspp->avctx_enc[i];
avctx_enc->width = width + BLOCK;
avctx_enc->height = height + BLOCK;
avctx_enc->time_base = (AVRational){1,25}; // meaningless
avctx_enc->gop_size = INT_MAX;
avctx_enc->max_b_frames = 0;
avctx_enc->pix_fmt = inlink->format;
avctx_enc->flags = AV_CODEC_FLAG_QSCALE | AV_CODEC_FLAG_LOW_DELAY;
avctx_enc->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
avctx_enc->global_quality = 123;
av_dict_set(&opts, "no_bitstream", "1", 0);
ret = avcodec_open2(avctx_enc, enc, &opts);
av_dict_free(&opts);
if (ret < 0)
return ret;
av_assert0(avctx_enc->codec);
}
uspp->outbuf_size = (width + BLOCK) * (height + BLOCK) * 10;
if (!(uspp->frame = av_frame_alloc()))
return AVERROR(ENOMEM);
if (!(uspp->pkt = av_packet_alloc()))
return AVERROR(ENOMEM);
if (!(uspp->outbuf = av_malloc(uspp->outbuf_size)))
return AVERROR(ENOMEM);
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
USPPContext *uspp = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out = in;
int qp_stride = 0;
int8_t *qp_table = NULL;
int ret = 0;
/* 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 (!uspp->qp && (uspp->use_bframe_qp || in->pict_type != AV_PICTURE_TYPE_B)) {
ret = ff_qp_table_extract(in, &qp_table, &qp_stride, NULL, &uspp->qscale_type);
if (ret < 0) {
av_frame_free(&in);
return ret;
}
if (!uspp->use_bframe_qp && in->pict_type != AV_PICTURE_TYPE_B) {
av_freep(&uspp->non_b_qp_table);
uspp->non_b_qp_table = qp_table;
uspp->non_b_qp_stride = qp_stride;
}
}
if (uspp->log2_count && !ctx->is_disabled) {
if (!uspp->use_bframe_qp && uspp->non_b_qp_table) {
qp_table = uspp->non_b_qp_table;
qp_stride = uspp->non_b_qp_stride;
}
if (qp_table || uspp->qp) {
/* 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);
if (qp_table != uspp->non_b_qp_table)
av_free(qp_table);
return AVERROR(ENOMEM);
}
av_frame_copy_props(out, in);
out->width = in->width;
out->height = in->height;
}
filter(uspp, out->data, in->data, out->linesize, in->linesize,
inlink->w, inlink->h, qp_table, qp_stride);
}
}
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);
if (qp_table != uspp->non_b_qp_table)
av_freep(&qp_table);
return ret;
}
static av_cold void uninit(AVFilterContext *ctx)
{
USPPContext *uspp = ctx->priv;
int i;
for (i = 0; i < 3; i++) {
av_freep(&uspp->temp[i]);
av_freep(&uspp->src[i]);
}
for (i = 0; i < (1 << uspp->log2_count); i++)
avcodec_free_context(&uspp->avctx_enc[i]);
av_freep(&uspp->non_b_qp_table);
av_freep(&uspp->outbuf);
av_packet_free(&uspp->pkt);
av_frame_free(&uspp->frame);
}
static const AVFilterPad uspp_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
.filter_frame = filter_frame,
},
};
static const AVFilterPad uspp_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
};
const AVFilter ff_vf_uspp = {
.name = "uspp",
.description = NULL_IF_CONFIG_SMALL("Apply Ultra Simple / Slow Post-processing filter."),
.priv_size = sizeof(USPPContext),
.uninit = uninit,
FILTER_INPUTS(uspp_inputs),
FILTER_OUTPUTS(uspp_outputs),
FILTER_QUERY_FUNC(query_formats),
.priv_class = &uspp_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};
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