diff options
Diffstat (limited to 'libavfilter/vf_fspp.c')
-rw-r--r-- | libavfilter/vf_fspp.c | 698 |
1 files changed, 698 insertions, 0 deletions
diff --git a/libavfilter/vf_fspp.c b/libavfilter/vf_fspp.c new file mode 100644 index 0000000000..4a1b7e03c2 --- /dev/null +++ b/libavfilter/vf_fspp.c @@ -0,0 +1,698 @@ +/* + * 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/avassert.h" +#include "libavutil/imgutils.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" +#include "internal.h" +#include "libavcodec/avcodec.h" //for reference to FF_QSCALE_TYPE +#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_INT, {.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 +}; + +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; +} + +//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(FSPPContext *p, int q) +{ + int a; + for (a = 0; a < 64; a++) + ((int16_t *)p->threshold_mtx)[a] = q * ((int16_t *)p->threshold_mtx_noq)[a];//ints faster in C +} + +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 = norm_qscale(t, p->qscale_type); + + if (t != p->prev_q) p->prev_q = t, p->mul_thrmat(p, 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)); + 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 & 7 + 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, int 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, int 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 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; + 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); + + if (!fspp->use_bframe_qp && !fspp->qp) { + fspp->non_b_qp_alloc_size = FF_CEIL_RSHIFT(inlink->w, 4) * FF_CEIL_RSHIFT(inlink->h, 4); + fspp->non_b_qp_table = av_calloc(fspp->non_b_qp_alloc_size, sizeof(*fspp->non_b_qp_table)); + if (!fspp->non_b_qp_table) + 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; + uint8_t *qp_table = NULL; + int i, bias; + 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(fspp, 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) { + qp_table = av_frame_get_qp_table(in, &qp_stride, &fspp->qscale_type); + + if (qp_table && !fspp->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 = qp_stride; + h = FF_CEIL_RSHIFT(inlink->h, 4); + } + if (w * h > fspp->non_b_qp_alloc_size) { + int ret = av_reallocp_array(&fspp->non_b_qp_table, w, h); + if (ret < 0) { + fspp->non_b_qp_alloc_size = 0; + return ret; + } + fspp->non_b_qp_alloc_size = w * h; + } + + av_assert0(w * h <= fspp->non_b_qp_alloc_size); + memcpy(fspp->non_b_qp_table, qp_table, w * h); + } + } + + if (fspp->log2_count && !ctx->is_disabled) { + if (!fspp->use_bframe_qp && fspp->non_b_qp_table) + qp_table = fspp->non_b_qp_table; + + if (qp_table || fspp->qp) { + const int cw = FF_CEIL_RSHIFT(inlink->w, fspp->hsub); + const int ch = FF_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); + return AVERROR(ENOMEM); + } + av_frame_copy_props(out, in); + } + + 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); + } + return ff_filter_frame(outlink, out); +} + +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, + }, + { NULL } +}; + +static const AVFilterPad fspp_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + }, + { NULL } +}; + +AVFilter ff_vf_fspp = { + .name = "fspp", + .description = NULL_IF_CONFIG_SMALL("Apply Fast Simple Post-processing filter."), + .priv_size = sizeof(FSPPContext), + .uninit = uninit, + .query_formats = query_formats, + .inputs = fspp_inputs, + .outputs = fspp_outputs, + .priv_class = &fspp_class, + .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL, +}; |