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FFmpeg/libavfilter/vf_uspp.c
Andreas Rheinhardt 6e2db67801 avfilter/vf_uspp: Fix leak of packet side data 
The uspp filter uses a special option ("no_bitstream") of
the Snow encoder to suppress it from generating output.
The filter therefore did not unref the packet after usage,
believing it to be blank. But this is wrong, as the Snow encoder
attaches quality stats side data to the packet.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
2021-03-12 19:05:37 +01:00

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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 "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];
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 = {0};
int got_pkt_ptr;
av_init_packet(&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
};
AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
if (!fmts_list)
return AVERROR(ENOMEM);
return ff_set_common_formats(ctx, fmts_list);
}
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->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_frame_free(&uspp->frame);
}
static const AVFilterPad uspp_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
.filter_frame = filter_frame,
},
{ NULL }
};
static const AVFilterPad uspp_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
AVFilter ff_vf_uspp = {
.name = "uspp",
.description = NULL_IF_CONFIG_SMALL("Apply Ultra Simple / Slow Post-processing filter."),
.priv_size = sizeof(USPPContext),
.uninit = uninit,
.query_formats = query_formats,
.inputs = uspp_inputs,
.outputs = uspp_outputs,
.priv_class = &uspp_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};
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