lavfi: port mp=fspp to a native libavfilter filter

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/libavfilter/vf_fspp.h b/libavfilter/vf_fspp.h
new file mode 100644
index 0000000000..db860c6413
--- /dev/null
+++ b/libavfilter/vf_fspp.h
@@ -0,0 +1,97 @@
+/*
+ * 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.
+ */
+
+#ifndef AVFILTER_FSPP_H
+#define AVFILTER_FSPP_H
+
+#include "avfilter.h"
+
+#define BLOCKSZ 12
+#define MAX_LEVEL 5
+
+#define DCTSIZE 8
+#define DCTSIZE_S "8"
+
+#define FIX(x,s)  ((int) ((x) * (1 << s) + 0.5) & 0xffff)
+#define C64(x)    ((uint64_t)((x) | (x) << 16)) <<32 | (uint64_t)(x) | (uint64_t)(x) << 16
+#define FIX64(x,s)  C64(FIX(x,s))
+
+#define MULTIPLY16H(x,k)   (((x) * (k)) >> 16)
+#define THRESHOLD(r,x,t)                         \
+    if(((unsigned)((x) + t)) > t * 2) r = (x);   \
+    else r = 0;
+#define DESCALE(x,n)  (((x) + (1 << ((n) - 1))) >> n)
+
+typedef int32_t int_simd16_t;
+static const int16_t FIX_0_382683433   = FIX(0.382683433, 14);
+static const int16_t FIX_0_541196100   = FIX(0.541196100, 14);
+static const int16_t FIX_0_707106781   = FIX(0.707106781, 14);
+static const int16_t FIX_1_306562965   = FIX(1.306562965, 14);
+static const int16_t FIX_1_414213562_A = FIX(1.414213562, 14);
+static const int16_t FIX_1_847759065   = FIX(1.847759065, 13);
+static const int16_t FIX_2_613125930   = FIX(-2.613125930, 13);
+static const int16_t FIX_1_414213562   = FIX(1.414213562, 13);
+static const int16_t FIX_1_082392200   = FIX(1.082392200, 13);
+
+typedef struct FSPPContext {
+    AVClass *class;
+    uint64_t threshold_mtx_noq[8 * 2];
+    uint64_t threshold_mtx[8 * 2];        //used in both C & MMX (& later SSE2) versions
+
+    int log2_count;
+    int strength;
+    int hsub;
+    int vsub;
+    int temp_stride;
+    int qp;
+    int qscale_type;
+    int prev_q;
+    uint8_t *src;
+    int16_t *temp;
+    uint8_t *non_b_qp_table;
+    int non_b_qp_alloc_size;
+    int use_bframe_qp;
+
+    void (*store_slice)(uint8_t *dst, int16_t *src,
+                        ptrdiff_t dst_stride, ptrdiff_t src_stride,
+                        ptrdiff_t width, ptrdiff_t height, ptrdiff_t log2_scale);
+
+    void (*store_slice2)(uint8_t *dst, int16_t *src,
+                         ptrdiff_t dst_stride, ptrdiff_t src_stride,
+                         ptrdiff_t width, ptrdiff_t height, ptrdiff_t log2_scale);
+
+    void (*mul_thrmat)(struct FSPPContext *fspp, int q);
+
+    void (*column_fidct)(int16_t *thr_adr, int16_t *data,
+                         int16_t *output, int cnt);
+
+    void (*row_idct)(int16_t *workspace, int16_t *output_adr,
+                     int output_stride, int cnt);
+
+    void (*row_fdct)(int16_t *data, const uint8_t *pixels,
+                     int line_size, int cnt);
+
+} FSPPContext;
+
+void ff_fspp_init_x86(FSPPContext *fspp);
+
+#endif /* AVFILTER_FSPP_H */