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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
516 lines
17 KiB
C
516 lines
17 KiB
C
/*
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* Copyright (c) 2003 Michael Niedermayer
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* Copyright (c) 2012 Jeremy Tran
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Apply a hue/saturation filter to the input video
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* Ported from MPlayer libmpcodecs/vf_hue.c.
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*/
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#include <float.h>
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#include "libavutil/eval.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "internal.h"
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#include "video.h"
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#define SAT_MIN_VAL -10
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#define SAT_MAX_VAL 10
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static const char *const var_names[] = {
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"n", // frame count
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"pts", // presentation timestamp expressed in AV_TIME_BASE units
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"r", // frame rate
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"t", // timestamp expressed in seconds
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"tb", // timebase
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NULL
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};
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enum var_name {
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VAR_N,
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VAR_PTS,
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VAR_R,
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VAR_T,
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VAR_TB,
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VAR_NB
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};
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typedef struct HueContext {
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const AVClass *class;
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float hue_deg; /* hue expressed in degrees */
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float hue; /* hue expressed in radians */
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char *hue_deg_expr;
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char *hue_expr;
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AVExpr *hue_deg_pexpr;
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AVExpr *hue_pexpr;
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float saturation;
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char *saturation_expr;
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AVExpr *saturation_pexpr;
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float brightness;
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char *brightness_expr;
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AVExpr *brightness_pexpr;
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int hsub;
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int vsub;
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int is_first;
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int32_t hue_sin;
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int32_t hue_cos;
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double var_values[VAR_NB];
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uint8_t lut_l[256];
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uint8_t lut_u[256][256];
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uint8_t lut_v[256][256];
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uint16_t lut_l16[65536];
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uint16_t lut_u10[1024][1024];
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uint16_t lut_v10[1024][1024];
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} HueContext;
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#define OFFSET(x) offsetof(HueContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption hue_options[] = {
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{ "h", "set the hue angle degrees expression", OFFSET(hue_deg_expr), AV_OPT_TYPE_STRING,
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{ .str = NULL }, .flags = FLAGS },
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{ "s", "set the saturation expression", OFFSET(saturation_expr), AV_OPT_TYPE_STRING,
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{ .str = "1" }, .flags = FLAGS },
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{ "H", "set the hue angle radians expression", OFFSET(hue_expr), AV_OPT_TYPE_STRING,
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{ .str = NULL }, .flags = FLAGS },
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{ "b", "set the brightness expression", OFFSET(brightness_expr), AV_OPT_TYPE_STRING,
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{ .str = "0" }, .flags = FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(hue);
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static inline void compute_sin_and_cos(HueContext *hue)
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{
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/*
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* Scale the value to the norm of the resulting (U,V) vector, that is
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* the saturation.
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* This will be useful in the apply_lut function.
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*/
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hue->hue_sin = lrint(sin(hue->hue) * (1 << 16) * hue->saturation);
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hue->hue_cos = lrint(cos(hue->hue) * (1 << 16) * hue->saturation);
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}
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static inline void create_luma_lut(HueContext *h)
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{
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const float b = h->brightness;
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int i;
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for (i = 0; i < 256; i++) {
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h->lut_l[i] = av_clip_uint8(i + b * 25.5);
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}
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for (i = 0; i < 65536; i++) {
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h->lut_l16[i] = av_clip_uintp2(i + b * 102.4, 10);
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}
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}
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static inline void create_chrominance_lut(HueContext *h, const int32_t c,
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const int32_t s)
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{
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int32_t i, j, u, v, new_u, new_v;
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/*
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* If we consider U and V as the components of a 2D vector then its angle
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* is the hue and the norm is the saturation
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*/
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for (i = 0; i < 256; i++) {
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for (j = 0; j < 256; j++) {
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/* Normalize the components from range [16;240] to [-112;112] */
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u = i - 128;
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v = j - 128;
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/*
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* Apply the rotation of the vector : (c * u) - (s * v)
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* (s * u) + (c * v)
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* De-normalize the components (without forgetting to scale 128
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* by << 16)
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* Finally scale back the result by >> 16
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*/
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new_u = ((c * u) - (s * v) + (1 << 15) + (128 << 16)) >> 16;
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new_v = ((s * u) + (c * v) + (1 << 15) + (128 << 16)) >> 16;
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/* Prevent a potential overflow */
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h->lut_u[i][j] = av_clip_uint8(new_u);
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h->lut_v[i][j] = av_clip_uint8(new_v);
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}
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}
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for (i = 0; i < 1024; i++) {
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for (j = 0; j < 1024; j++) {
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u = i - 512;
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v = j - 512;
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/*
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* Apply the rotation of the vector : (c * u) - (s * v)
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* (s * u) + (c * v)
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* De-normalize the components (without forgetting to scale 512
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* by << 16)
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* Finally scale back the result by >> 16
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*/
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new_u = ((c * u) - (s * v) + (1 << 15) + (512 << 16)) >> 16;
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new_v = ((s * u) + (c * v) + (1 << 15) + (512 << 16)) >> 16;
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/* Prevent a potential overflow */
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h->lut_u10[i][j] = av_clip_uintp2(new_u, 10);
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h->lut_v10[i][j] = av_clip_uintp2(new_v, 10);
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}
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}
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}
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static int set_expr(AVExpr **pexpr_ptr, char **expr_ptr,
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const char *expr, const char *option, void *log_ctx)
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{
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int ret;
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AVExpr *new_pexpr;
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char *new_expr;
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new_expr = av_strdup(expr);
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if (!new_expr)
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return AVERROR(ENOMEM);
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ret = av_expr_parse(&new_pexpr, expr, var_names,
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NULL, NULL, NULL, NULL, 0, log_ctx);
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if (ret < 0) {
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av_log(log_ctx, AV_LOG_ERROR,
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"Error when evaluating the expression '%s' for %s\n",
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expr, option);
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av_free(new_expr);
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return ret;
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}
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if (*pexpr_ptr)
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av_expr_free(*pexpr_ptr);
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*pexpr_ptr = new_pexpr;
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av_freep(expr_ptr);
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*expr_ptr = new_expr;
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return 0;
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}
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static av_cold int init(AVFilterContext *ctx)
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{
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HueContext *hue = ctx->priv;
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int ret;
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if (hue->hue_expr && hue->hue_deg_expr) {
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av_log(ctx, AV_LOG_ERROR,
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"H and h options are incompatible and cannot be specified "
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"at the same time\n");
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return AVERROR(EINVAL);
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}
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#define SET_EXPR(expr, option) \
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if (hue->expr##_expr) do { \
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ret = set_expr(&hue->expr##_pexpr, &hue->expr##_expr, \
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hue->expr##_expr, option, ctx); \
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if (ret < 0) \
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return ret; \
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} while (0)
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SET_EXPR(brightness, "b");
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SET_EXPR(saturation, "s");
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SET_EXPR(hue_deg, "h");
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SET_EXPR(hue, "H");
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#undef SET_EXPR
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av_log(ctx, AV_LOG_VERBOSE,
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"H_expr:%s h_deg_expr:%s s_expr:%s b_expr:%s\n",
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hue->hue_expr, hue->hue_deg_expr, hue->saturation_expr, hue->brightness_expr);
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compute_sin_and_cos(hue);
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hue->is_first = 1;
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return 0;
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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HueContext *hue = ctx->priv;
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av_expr_free(hue->brightness_pexpr);
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av_expr_free(hue->hue_deg_pexpr);
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av_expr_free(hue->hue_pexpr);
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av_expr_free(hue->saturation_pexpr);
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}
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P,
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
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AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P,
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AV_PIX_FMT_YUVA420P,
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AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV422P10,
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AV_PIX_FMT_YUV420P10,
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AV_PIX_FMT_YUV440P10,
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AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA422P10,
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AV_PIX_FMT_YUVA420P10,
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AV_PIX_FMT_NONE
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};
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static int config_props(AVFilterLink *inlink)
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{
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HueContext *hue = inlink->dst->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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hue->hsub = desc->log2_chroma_w;
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hue->vsub = desc->log2_chroma_h;
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hue->var_values[VAR_N] = 0;
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hue->var_values[VAR_TB] = av_q2d(inlink->time_base);
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hue->var_values[VAR_R] = inlink->frame_rate.num == 0 || inlink->frame_rate.den == 0 ?
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NAN : av_q2d(inlink->frame_rate);
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return 0;
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}
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static void apply_luma_lut(HueContext *s,
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uint8_t *ldst, const int dst_linesize,
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uint8_t *lsrc, const int src_linesize,
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int w, int h)
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{
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int i;
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while (h--) {
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for (i = 0; i < w; i++)
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ldst[i] = s->lut_l[lsrc[i]];
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lsrc += src_linesize;
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ldst += dst_linesize;
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}
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}
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static void apply_luma_lut10(HueContext *s,
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uint16_t *ldst, const int dst_linesize,
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uint16_t *lsrc, const int src_linesize,
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int w, int h)
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{
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int i;
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while (h--) {
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for (i = 0; i < w; i++)
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ldst[i] = s->lut_l16[lsrc[i]];
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lsrc += src_linesize;
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ldst += dst_linesize;
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}
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}
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static void apply_lut(HueContext *s,
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uint8_t *udst, uint8_t *vdst, const int dst_linesize,
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uint8_t *usrc, uint8_t *vsrc, const int src_linesize,
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int w, int h)
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{
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int i;
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while (h--) {
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for (i = 0; i < w; i++) {
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const int u = usrc[i];
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const int v = vsrc[i];
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udst[i] = s->lut_u[u][v];
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vdst[i] = s->lut_v[u][v];
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}
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usrc += src_linesize;
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vsrc += src_linesize;
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udst += dst_linesize;
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vdst += dst_linesize;
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}
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}
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static void apply_lut10(HueContext *s,
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uint16_t *udst, uint16_t *vdst, const int dst_linesize,
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uint16_t *usrc, uint16_t *vsrc, const int src_linesize,
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int w, int h)
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{
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int i;
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while (h--) {
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for (i = 0; i < w; i++) {
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const int u = av_clip_uintp2(usrc[i], 10);
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const int v = av_clip_uintp2(vsrc[i], 10);
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udst[i] = s->lut_u10[u][v];
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vdst[i] = s->lut_v10[u][v];
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}
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usrc += src_linesize;
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vsrc += src_linesize;
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udst += dst_linesize;
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vdst += dst_linesize;
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}
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
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{
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HueContext *hue = inlink->dst->priv;
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AVFilterLink *outlink = inlink->dst->outputs[0];
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AVFrame *outpic;
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const int32_t old_hue_sin = hue->hue_sin, old_hue_cos = hue->hue_cos;
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const float old_brightness = hue->brightness;
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int direct = 0;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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const int bps = desc->comp[0].depth > 8 ? 2 : 1;
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if (av_frame_is_writable(inpic)) {
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direct = 1;
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outpic = inpic;
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} else {
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outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!outpic) {
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av_frame_free(&inpic);
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return AVERROR(ENOMEM);
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}
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av_frame_copy_props(outpic, inpic);
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}
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hue->var_values[VAR_N] = inlink->frame_count_out;
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hue->var_values[VAR_T] = TS2T(inpic->pts, inlink->time_base);
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hue->var_values[VAR_PTS] = TS2D(inpic->pts);
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if (hue->saturation_expr) {
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hue->saturation = av_expr_eval(hue->saturation_pexpr, hue->var_values, NULL);
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if (hue->saturation < SAT_MIN_VAL || hue->saturation > SAT_MAX_VAL) {
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hue->saturation = av_clip(hue->saturation, SAT_MIN_VAL, SAT_MAX_VAL);
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av_log(inlink->dst, AV_LOG_WARNING,
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"Saturation value not in range [%d,%d]: clipping value to %0.1f\n",
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SAT_MIN_VAL, SAT_MAX_VAL, hue->saturation);
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}
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}
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if (hue->brightness_expr) {
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hue->brightness = av_expr_eval(hue->brightness_pexpr, hue->var_values, NULL);
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if (hue->brightness < -10 || hue->brightness > 10) {
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hue->brightness = av_clipf(hue->brightness, -10, 10);
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av_log(inlink->dst, AV_LOG_WARNING,
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"Brightness value not in range [%d,%d]: clipping value to %0.1f\n",
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-10, 10, hue->brightness);
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}
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}
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if (hue->hue_deg_expr) {
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hue->hue_deg = av_expr_eval(hue->hue_deg_pexpr, hue->var_values, NULL);
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hue->hue = hue->hue_deg * M_PI / 180;
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} else if (hue->hue_expr) {
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hue->hue = av_expr_eval(hue->hue_pexpr, hue->var_values, NULL);
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hue->hue_deg = hue->hue * 180 / M_PI;
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}
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av_log(inlink->dst, AV_LOG_DEBUG,
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"H:%0.1f*PI h:%0.1f s:%0.1f b:%0.f t:%0.1f n:%d\n",
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hue->hue/M_PI, hue->hue_deg, hue->saturation, hue->brightness,
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hue->var_values[VAR_T], (int)hue->var_values[VAR_N]);
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compute_sin_and_cos(hue);
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if (hue->is_first || (old_hue_sin != hue->hue_sin || old_hue_cos != hue->hue_cos))
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create_chrominance_lut(hue, hue->hue_cos, hue->hue_sin);
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if (hue->is_first || (old_brightness != hue->brightness && hue->brightness))
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create_luma_lut(hue);
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if (!direct) {
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if (!hue->brightness)
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av_image_copy_plane(outpic->data[0], outpic->linesize[0],
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inpic->data[0], inpic->linesize[0],
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inlink->w * bps, inlink->h);
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if (inpic->data[3])
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av_image_copy_plane(outpic->data[3], outpic->linesize[3],
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inpic->data[3], inpic->linesize[3],
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inlink->w * bps, inlink->h);
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}
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if (bps > 1) {
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apply_lut10(hue, (uint16_t*)outpic->data[1], (uint16_t*)outpic->data[2], outpic->linesize[1]/2,
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(uint16_t*) inpic->data[1], (uint16_t*) inpic->data[2], inpic->linesize[1]/2,
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AV_CEIL_RSHIFT(inlink->w, hue->hsub),
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AV_CEIL_RSHIFT(inlink->h, hue->vsub));
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if (hue->brightness)
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apply_luma_lut10(hue, (uint16_t*)outpic->data[0], outpic->linesize[0]/2,
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(uint16_t*) inpic->data[0], inpic->linesize[0]/2, inlink->w, inlink->h);
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} else {
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apply_lut(hue, outpic->data[1], outpic->data[2], outpic->linesize[1],
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inpic->data[1], inpic->data[2], inpic->linesize[1],
|
|
AV_CEIL_RSHIFT(inlink->w, hue->hsub),
|
|
AV_CEIL_RSHIFT(inlink->h, hue->vsub));
|
|
if (hue->brightness)
|
|
apply_luma_lut(hue, outpic->data[0], outpic->linesize[0],
|
|
inpic->data[0], inpic->linesize[0], inlink->w, inlink->h);
|
|
}
|
|
|
|
if (!direct)
|
|
av_frame_free(&inpic);
|
|
|
|
hue->is_first = 0;
|
|
return ff_filter_frame(outlink, outpic);
|
|
}
|
|
|
|
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
|
|
char *res, int res_len, int flags)
|
|
{
|
|
HueContext *hue = ctx->priv;
|
|
int ret;
|
|
|
|
#define SET_EXPR(expr, option) \
|
|
do { \
|
|
ret = set_expr(&hue->expr##_pexpr, &hue->expr##_expr, \
|
|
args, option, ctx); \
|
|
if (ret < 0) \
|
|
return ret; \
|
|
} while (0)
|
|
|
|
if (!strcmp(cmd, "h")) {
|
|
SET_EXPR(hue_deg, "h");
|
|
av_freep(&hue->hue_expr);
|
|
} else if (!strcmp(cmd, "H")) {
|
|
SET_EXPR(hue, "H");
|
|
av_freep(&hue->hue_deg_expr);
|
|
} else if (!strcmp(cmd, "s")) {
|
|
SET_EXPR(saturation, "s");
|
|
} else if (!strcmp(cmd, "b")) {
|
|
SET_EXPR(brightness, "b");
|
|
} else
|
|
return AVERROR(ENOSYS);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const AVFilterPad hue_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame,
|
|
.config_props = config_props,
|
|
},
|
|
};
|
|
|
|
const AVFilter ff_vf_hue = {
|
|
.name = "hue",
|
|
.description = NULL_IF_CONFIG_SMALL("Adjust the hue and saturation of the input video."),
|
|
.priv_size = sizeof(HueContext),
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.process_command = process_command,
|
|
FILTER_INPUTS(hue_inputs),
|
|
FILTER_OUTPUTS(ff_video_default_filterpad),
|
|
FILTER_PIXFMTS_ARRAY(pix_fmts),
|
|
.priv_class = &hue_class,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
|
|
};
|