On date Sunday 2014-12-07 19:52:59 +0530, arwa arif encoded: > Hello! > I have ported the uspp filter to FFmpeg. > > > I have attached the patch. > > > Regards, > Arwa Arif
> From 7cafda11d5d402a0490af0a1a74de373445352a1 Mon Sep 17 00:00:00 2001 > From: Arwa Arif <arwaarif1...@gmail.com> > Date: Sun, 7 Dec 2014 18:56:46 +0530 > Subject: [PATCH] lavfi: USPP Filter > > --- > libavfilter/Makefile | 2 +- > libavfilter/allfilters.c | 1 + > libavfilter/vf_uspp.c | 509 > ++++++++++++++++++++++++++++++++++++++++++++++ > libavfilter/vf_uspp.h | 55 +++++ > 4 files changed, 566 insertions(+), 1 deletion(-) > create mode 100644 libavfilter/vf_uspp.c > create mode 100644 libavfilter/vf_uspp.h Please also add documentation. > diff --git a/libavfilter/Makefile b/libavfilter/Makefile > index 2c56e38..6b7291e 100644 > --- a/libavfilter/Makefile > +++ b/libavfilter/Makefile > @@ -193,6 +193,7 @@ OBJS-$(CONFIG_TINTERLACE_FILTER) += > vf_tinterlace.o > OBJS-$(CONFIG_TRANSPOSE_FILTER) += vf_transpose.o > OBJS-$(CONFIG_TRIM_FILTER) += trim.o > OBJS-$(CONFIG_UNSHARP_FILTER) += vf_unsharp.o > +OBJS-$(CONFIG_USPP_FILTER) += vf_uspp.o > OBJS-$(CONFIG_VFLIP_FILTER) += vf_vflip.o > OBJS-$(CONFIG_VIDSTABDETECT_FILTER) += vidstabutils.o > vf_vidstabdetect.o > OBJS-$(CONFIG_VIDSTABTRANSFORM_FILTER) += vidstabutils.o > vf_vidstabtransform.o > @@ -226,7 +227,6 @@ OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_fspp.o > OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_ilpack.o > OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_pp7.o > OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_softpulldown.o > -OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_uspp.o > > # multimedia filters > OBJS-$(CONFIG_AVECTORSCOPE_FILTER) += avf_avectorscope.o > diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c > index 2352d44..adb86be 100644 > --- a/libavfilter/allfilters.c > +++ b/libavfilter/allfilters.c > @@ -208,6 +208,7 @@ void avfilter_register_all(void) > REGISTER_FILTER(TRANSPOSE, transpose, vf); > REGISTER_FILTER(TRIM, trim, vf); > REGISTER_FILTER(UNSHARP, unsharp, vf); > + REGISTER_FILTER(USPP, uspp, vf); > REGISTER_FILTER(VFLIP, vflip, vf); > REGISTER_FILTER(VIDSTABDETECT, vidstabdetect, vf); > REGISTER_FILTER(VIDSTABTRANSFORM, vidstabtransform, vf); > diff --git a/libavfilter/vf_uspp.c b/libavfilter/vf_uspp.c > new file mode 100644 > index 0000000..fb02620 > --- /dev/null > +++ b/libavfilter/vf_uspp.c > @@ -0,0 +1,509 @@ > +/* > + * Copyright (c) 2003 Michael Niedermayer <michae...@gmx.at> > + * Copyright (c) 2014 Arwa Arif <arwaarif1...@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 > + * USPP > + * > + * 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/opt.h" > +#include "libavutil/pixdesc.h" > +#include "internal.h" > +#include "vf_uspp.h" > + > +enum mode { > + MODE_HARD, > + MODE_SOFT, > + NB_MODES > +}; > + > +#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 }, > + { "mode", "set thresholding mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 > = MODE_HARD}, 0, NB_MODES - 1, FLAGS, "mode" }, > + { "hard", "hard thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = > MODE_HARD}, INT_MIN, INT_MAX, FLAGS, "mode" }, > + { "soft", "soft thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = > MODE_SOFT}, INT_MIN, INT_MAX, FLAGS, "mode" }, > + { "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), > AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS }, > + { NULL } > +}; > + > +static const AVClass uspp_class = { > + .class_name = "uspp", > + .item_name = av_default_item_name, > + .option = uspp_options, > + .version = LIBAVUTIL_VERSION_INT, > + .category = AV_CLASS_CATEGORY_FILTER, > +}; > + > +//===========================================================================// > +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 hardthresh_c(int16_t dst[64], const int16_t src[64], > + int qp, const uint8_t *permutation) > +{ > + int i; > + int bias = 0; // FIXME Maybe Michael can comment on this FIXME. Note: further changes should be done after the filter is ported (so we keep binary-compatibility with the original filter). > + > + unsigned threshold1 = qp * ((1<<4) - bias) - 1; > + unsigned threshold2 = threshold1 << 1; > + > + memset(dst, 0, 64 * sizeof(dst[0])); #define DST_SIZE 64 so you avoid the literal 64 all around the place. > + dst[0] = (src[0] + 4) >> 3; > + > + for (i = 1; i < 64; i++) { > + int level = src[i]; > + if (((unsigned)(level + threshold1)) > threshold2) { > + const int j = permutation[i]; > + dst[j] = (level + 4) >> 3; > + } > + } > +} > + > +static void softthresh_c(int16_t dst[64], const int16_t src[64], > + int qp, const uint8_t *permutation) > +{ > + int i; > + int bias = 0; //FIXME > + > + unsigned threshold1 = qp * ((1<<4) - bias) - 1; > + unsigned threshold2 = threshold1 << 1; > + > + memset(dst, 0, 64 * sizeof(dst[0])); > + dst[0] = (src[0] + 4) >> 3; > + > + for (i = 1; i < 64; i++) { > + int level = src[i]; > + if (((unsigned)(level + threshold1)) > threshold2) { > + const int j = permutation[i]; > + if (level > 0) dst[j] = (level - threshold1 + 4) >> 3; > + else dst[j] = (level + threshold1 + 4) >> 3; > + } > + } > +} > + > +static void store_slice_c(uint8_t *dst, int16_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 inline int norm_qscale(int qscale, int type) > +{ > + switch (type) { > + case FF_QSCALE_TYPE_MPEG1: return qscale; > + case FF_QSCALE_TYPE_MPEG2: return qscale >> 1; > + case FF_QSCALE_TYPE_H264: return qscale >> 2; > + case FF_QSCALE_TYPE_VP56: return (63 - qscale + 2) >> 2; > + } > + return qscale; > +} > + > +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; > + for(i=0; i<3; i++){ > + int is_chroma= !!i; > + int w= width >>is_chroma; > + int h= height>>is_chroma; > + int stride= p->temp_stride[i]; > + int block= BLOCK>>is_chroma; > + > + if (!src[i] || !dst[i]) > + continue; // HACK avoid crash for Y8 colourspace > + 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 > + p->frame->quality= norm_qscale(qp_store[0], p->qscale_type) * > FF_QP2LAMBDA; > +// init per MB qscale stuff FIXME > + > + for(i=0; i<count; i++){ > + const int x1= offset[i+count-1][0]; > + const int y1= offset[i+count-1][1]; > + int offset; > + p->frame->data[0]= p->src[0] + x1 + y1 * p->frame->linesize[0]; > + p->frame->data[1]= p->src[1] + x1/2 + y1/2 * p->frame->linesize[1]; > + p->frame->data[2]= p->src[2] + x1/2 + y1/2 * p->frame->linesize[2]; > + > + avcodec_encode_video(p->avctx_enc[i], p->outbuf, p->outbuf_size, > p->frame); > + p->frame_dec = p->avctx_enc[i]->coded_frame; > + > + offset= (BLOCK-x1) + (BLOCK-y1)*p->frame_dec->linesize[0]; > + //FIXME optimize > + 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 ]; > + } > + } > + offset= (BLOCK/2-x1/2) + (BLOCK/2-y1/2)*p->frame_dec->linesize[1]; > + for(y=0; y<height/2; y++){ > + for(x=0; x<width/2; 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; // HACK avoid crash for Y8 colourspace > + store_slice_c(dst[j], p->temp[j], dst_stride[j], p->temp_stride[j], > width>>is_chroma, height>>is_chroma, 8-p->log2_count); > + } > +} > + > +static int query_formats(AVFilterContext *ctx) > +{ > + static const enum PixelFormat 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_NONE > + }; > + ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); > + return 0; > +} > + > +static int config_input(AVFilterLink *inlink) > +{ > + > + AVFilterContext *ctx = inlink->dst; > + USPPContext *uspp = ctx->priv; > + const int height = inlink->h; > + const int width = inlink->w; > + > + AVCodec *enc= avcodec_find_encoder(AV_CODEC_ID_SNOW); > + int i; > + > + if (!uspp->use_bframe_qp) { > + /* we are assuming here the qp blocks will not be smaller that 16x16 > */ > + uspp->non_b_qp_alloc_size = FF_CEIL_RSHIFT(width, 4) * > FF_CEIL_RSHIFT(height, 4); > + uspp->non_b_qp_table = av_calloc(uspp->non_b_qp_alloc_size, > sizeof(*uspp->non_b_qp_table)); > + if (!uspp->non_b_qp_table) > + return AVERROR(ENOMEM); > + } > + > + for(i=0; i<3; i++){ > + int is_chroma= !!i; > + int w= ((width + 4*BLOCK-1) & (~(2*BLOCK-1)))>>is_chroma; > + int h= ((height + 4*BLOCK-1) & (~(2*BLOCK-1)))>>is_chroma; > + > + uspp->temp_stride[i]= w; > + uspp->temp[i]= malloc(uspp->temp_stride[i]*h*sizeof(int16_t)); > + uspp->src [i]= malloc(uspp->temp_stride[i]*h*sizeof(uint8_t)); > + } > + > + for(i=0; i< (1<<uspp->log2_count); i++){ > + AVCodecContext *avctx_enc; > + AVDictionary *opts = NULL; > + > + avctx_enc = uspp->avctx_enc[i]= avcodec_alloc_context3(NULL); > + avctx_enc->width = width + BLOCK; > + avctx_enc->height = height + BLOCK; > + avctx_enc->time_base= (AVRational){1,25}; // meaningless > + avctx_enc->gop_size = 300; > + avctx_enc->max_b_frames= 0; > + avctx_enc->pix_fmt = AV_PIX_FMT_YUV420P; > + avctx_enc->flags = CODEC_FLAG_QSCALE | 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); > + if (avcodec_open2(avctx_enc, enc, &opts) < 0) > + return 0; > + av_dict_free(&opts); > + assert(avctx_enc->codec); > + } > + uspp->frame= av_frame_alloc(); > + uspp->frame_dec= av_frame_alloc(); > + > + uspp->outbuf_size= (width + BLOCK)*(height + BLOCK)*10; > + uspp->outbuf= malloc(uspp->outbuf_size); > + switch (uspp->mode) { > + case MODE_HARD: uspp->requantize = hardthresh_c; break; > + case MODE_SOFT: uspp->requantize = softthresh_c; break; > + } > + 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; > + uint8_t *qp_table = NULL; > + > + /* 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) { > + qp_table = av_frame_get_qp_table(in, &qp_stride, &uspp->qscale_type); > + > + if (qp_table && !uspp->use_bframe_qp && in->pict_type != > AV_PICTURE_TYPE_B) { > + int w, h; > + > + /* if the qp stride is not set, it means the QP are only defined > on > + * a line basis */ > + if (!qp_stride) { > + w = FF_CEIL_RSHIFT(inlink->w, 4); > + h = 1; > + } else { > + w = FF_CEIL_RSHIFT(qp_stride, 4); > + h = FF_CEIL_RSHIFT(inlink->h, 4); > + } > + av_assert0(w * h <= uspp->non_b_qp_alloc_size); > + memcpy(uspp->non_b_qp_table, qp_table, w * h); > + } > + } > + > + if (uspp->log2_count && !ctx->is_disabled) { > + if (!uspp->use_bframe_qp && uspp->non_b_qp_table) > + qp_table = uspp->non_b_qp_table; > + > + 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); > + 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); > + 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); > + } > + return ff_filter_frame(outlink, out); > +} > + > +static int process_command(AVFilterContext *ctx, const char *cmd, const char > *args, > + char *res, int res_len, int flags) > +{ > + USPPContext *uspp = ctx->priv; > + > + if (!strcmp(cmd, "level")) { > + if (!strcmp(args, "max")) > + uspp->log2_count = MAX_LEVEL; > + else > + uspp->log2_count = av_clip(strtol(args, NULL, 10), 0, MAX_LEVEL); check the case when the value is not valid. Alternatively, you use av_opt_ to set the value using the av_opt evaluation system. > + return 0; > + } > + return AVERROR(ENOSYS); > +} > + > +static av_cold void uninit(AVFilterContext *ctx) > +{ > + USPPContext *uspp = ctx->priv; > + if(!uspp) return; > + > + av_freep(&uspp->temp); > + av_freep(&uspp->src); > + > + if (uspp->avctx_enc) { > + avcodec_close(*uspp->avctx_enc); > + av_freep(uspp->avctx_enc); > + } > + av_freep(&uspp->non_b_qp_table); > +} > + > +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 USPP filter."), This is a bit tautologic, please also explain the purpose of the filter. 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