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1016 lines
52 KiB
1016 lines
52 KiB
/* |
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* Copyright (c) 2010 Stefano Sabatini |
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* Copyright (c) 2010 Baptiste Coudurier |
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* Copyright (c) 2007 Bobby Bingham |
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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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/** |
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* @file |
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* overlay one video on top of another |
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*/ |
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|
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#include "avfilter.h" |
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#include "formats.h" |
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#include "libavutil/common.h" |
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#include "libavutil/eval.h" |
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#include "libavutil/avstring.h" |
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#include "libavutil/pixdesc.h" |
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#include "libavutil/imgutils.h" |
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#include "libavutil/mathematics.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/timestamp.h" |
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#include "filters.h" |
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#include "drawutils.h" |
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#include "framesync.h" |
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#include "video.h" |
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#include "vf_overlay.h" |
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typedef struct ThreadData { |
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AVFrame *dst, *src; |
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} ThreadData; |
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|
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static const char *const var_names[] = { |
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"main_w", "W", ///< width of the main video |
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"main_h", "H", ///< height of the main video |
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"overlay_w", "w", ///< width of the overlay video |
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"overlay_h", "h", ///< height of the overlay video |
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"hsub", |
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"vsub", |
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"x", |
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"y", |
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"n", ///< number of frame |
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#if FF_API_FRAME_PKT |
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"pos", ///< position in the file |
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#endif |
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"t", ///< timestamp expressed in seconds |
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NULL |
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}; |
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#define MAIN 0 |
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#define OVERLAY 1 |
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#define R 0 |
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#define G 1 |
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#define B 2 |
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#define A 3 |
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#define Y 0 |
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#define U 1 |
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#define V 2 |
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enum EvalMode { |
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EVAL_MODE_INIT, |
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EVAL_MODE_FRAME, |
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EVAL_MODE_NB |
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}; |
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static av_cold void uninit(AVFilterContext *ctx) |
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{ |
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OverlayContext *s = ctx->priv; |
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ff_framesync_uninit(&s->fs); |
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av_expr_free(s->x_pexpr); s->x_pexpr = NULL; |
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av_expr_free(s->y_pexpr); s->y_pexpr = NULL; |
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} |
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static inline int normalize_xy(double d, int chroma_sub) |
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{ |
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if (isnan(d)) |
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return INT_MAX; |
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return (int)d & ~((1 << chroma_sub) - 1); |
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} |
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static void eval_expr(AVFilterContext *ctx) |
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{ |
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OverlayContext *s = ctx->priv; |
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|
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s->var_values[VAR_X] = av_expr_eval(s->x_pexpr, s->var_values, NULL); |
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s->var_values[VAR_Y] = av_expr_eval(s->y_pexpr, s->var_values, NULL); |
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/* It is necessary if x is expressed from y */ |
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s->var_values[VAR_X] = av_expr_eval(s->x_pexpr, s->var_values, NULL); |
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s->x = normalize_xy(s->var_values[VAR_X], s->hsub); |
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s->y = normalize_xy(s->var_values[VAR_Y], s->vsub); |
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} |
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static int set_expr(AVExpr **pexpr, const char *expr, const char *option, void *log_ctx) |
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{ |
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int ret; |
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AVExpr *old = NULL; |
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if (*pexpr) |
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old = *pexpr; |
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ret = av_expr_parse(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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*pexpr = old; |
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return ret; |
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} |
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av_expr_free(old); |
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return 0; |
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} |
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static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, |
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char *res, int res_len, int flags) |
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{ |
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OverlayContext *s = ctx->priv; |
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int ret; |
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if (!strcmp(cmd, "x")) |
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ret = set_expr(&s->x_pexpr, args, cmd, ctx); |
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else if (!strcmp(cmd, "y")) |
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ret = set_expr(&s->y_pexpr, args, cmd, ctx); |
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else |
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ret = AVERROR(ENOSYS); |
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if (ret < 0) |
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return ret; |
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if (s->eval_mode == EVAL_MODE_INIT) { |
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eval_expr(ctx); |
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av_log(ctx, AV_LOG_VERBOSE, "x:%f xi:%d y:%f yi:%d\n", |
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s->var_values[VAR_X], s->x, |
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s->var_values[VAR_Y], s->y); |
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} |
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return ret; |
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} |
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static const enum AVPixelFormat alpha_pix_fmts[] = { |
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AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, |
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AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, |
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AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_RGBA, |
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AV_PIX_FMT_BGRA, AV_PIX_FMT_GBRAP, AV_PIX_FMT_NONE |
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}; |
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static int query_formats(AVFilterContext *ctx) |
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{ |
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OverlayContext *s = ctx->priv; |
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|
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/* overlay formats contains alpha, for avoiding conversion with alpha information loss */ |
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static const enum AVPixelFormat main_pix_fmts_yuv420[] = { |
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVA420P, |
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AV_PIX_FMT_NV12, AV_PIX_FMT_NV21, |
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AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat overlay_pix_fmts_yuv420[] = { |
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AV_PIX_FMT_YUVA420P, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat main_pix_fmts_yuv420p10[] = { |
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AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUVA420P10, |
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AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat overlay_pix_fmts_yuv420p10[] = { |
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AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat main_pix_fmts_yuv422[] = { |
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AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat overlay_pix_fmts_yuv422[] = { |
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AV_PIX_FMT_YUVA422P, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat main_pix_fmts_yuv422p10[] = { |
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AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat overlay_pix_fmts_yuv422p10[] = { |
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AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat main_pix_fmts_yuv444[] = { |
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat overlay_pix_fmts_yuv444[] = { |
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AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat main_pix_fmts_yuv444p10[] = { |
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AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat overlay_pix_fmts_yuv444p10[] = { |
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AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat main_pix_fmts_gbrp[] = { |
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat overlay_pix_fmts_gbrp[] = { |
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AV_PIX_FMT_GBRAP, AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat main_pix_fmts_rgb[] = { |
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AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA, |
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AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, |
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AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, |
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AV_PIX_FMT_NONE |
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}; |
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static const enum AVPixelFormat overlay_pix_fmts_rgb[] = { |
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AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA, |
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AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, |
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AV_PIX_FMT_NONE |
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}; |
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const enum AVPixelFormat *main_formats, *overlay_formats; |
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AVFilterFormats *formats; |
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int ret; |
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switch (s->format) { |
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case OVERLAY_FORMAT_YUV420: |
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main_formats = main_pix_fmts_yuv420; |
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overlay_formats = overlay_pix_fmts_yuv420; |
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break; |
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case OVERLAY_FORMAT_YUV420P10: |
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main_formats = main_pix_fmts_yuv420p10; |
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overlay_formats = overlay_pix_fmts_yuv420p10; |
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break; |
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case OVERLAY_FORMAT_YUV422: |
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main_formats = main_pix_fmts_yuv422; |
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overlay_formats = overlay_pix_fmts_yuv422; |
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break; |
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case OVERLAY_FORMAT_YUV422P10: |
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main_formats = main_pix_fmts_yuv422p10; |
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overlay_formats = overlay_pix_fmts_yuv422p10; |
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break; |
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case OVERLAY_FORMAT_YUV444: |
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main_formats = main_pix_fmts_yuv444; |
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overlay_formats = overlay_pix_fmts_yuv444; |
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break; |
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case OVERLAY_FORMAT_YUV444P10: |
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main_formats = main_pix_fmts_yuv444p10; |
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overlay_formats = overlay_pix_fmts_yuv444p10; |
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break; |
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case OVERLAY_FORMAT_RGB: |
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main_formats = main_pix_fmts_rgb; |
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overlay_formats = overlay_pix_fmts_rgb; |
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break; |
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case OVERLAY_FORMAT_GBRP: |
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main_formats = main_pix_fmts_gbrp; |
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overlay_formats = overlay_pix_fmts_gbrp; |
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break; |
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case OVERLAY_FORMAT_AUTO: |
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return ff_set_common_formats_from_list(ctx, alpha_pix_fmts); |
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default: |
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av_assert0(0); |
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} |
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formats = ff_make_format_list(main_formats); |
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if ((ret = ff_formats_ref(formats, &ctx->inputs[MAIN]->outcfg.formats)) < 0 || |
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(ret = ff_formats_ref(formats, &ctx->outputs[MAIN]->incfg.formats)) < 0) |
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return ret; |
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return ff_formats_ref(ff_make_format_list(overlay_formats), |
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&ctx->inputs[OVERLAY]->outcfg.formats); |
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} |
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static int config_input_overlay(AVFilterLink *inlink) |
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{ |
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AVFilterContext *ctx = inlink->dst; |
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OverlayContext *s = inlink->dst->priv; |
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int ret; |
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const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format); |
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av_image_fill_max_pixsteps(s->overlay_pix_step, NULL, pix_desc); |
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/* Finish the configuration by evaluating the expressions |
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now when both inputs are configured. */ |
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s->var_values[VAR_MAIN_W ] = s->var_values[VAR_MW] = ctx->inputs[MAIN ]->w; |
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s->var_values[VAR_MAIN_H ] = s->var_values[VAR_MH] = ctx->inputs[MAIN ]->h; |
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s->var_values[VAR_OVERLAY_W] = s->var_values[VAR_OW] = ctx->inputs[OVERLAY]->w; |
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s->var_values[VAR_OVERLAY_H] = s->var_values[VAR_OH] = ctx->inputs[OVERLAY]->h; |
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s->var_values[VAR_HSUB] = 1<<pix_desc->log2_chroma_w; |
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s->var_values[VAR_VSUB] = 1<<pix_desc->log2_chroma_h; |
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s->var_values[VAR_X] = NAN; |
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s->var_values[VAR_Y] = NAN; |
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s->var_values[VAR_N] = 0; |
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s->var_values[VAR_T] = NAN; |
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#if FF_API_FRAME_PKT |
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s->var_values[VAR_POS] = NAN; |
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#endif |
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if ((ret = set_expr(&s->x_pexpr, s->x_expr, "x", ctx)) < 0 || |
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(ret = set_expr(&s->y_pexpr, s->y_expr, "y", ctx)) < 0) |
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return ret; |
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s->overlay_is_packed_rgb = |
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ff_fill_rgba_map(s->overlay_rgba_map, inlink->format) >= 0; |
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s->overlay_has_alpha = ff_fmt_is_in(inlink->format, alpha_pix_fmts); |
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if (s->eval_mode == EVAL_MODE_INIT) { |
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eval_expr(ctx); |
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av_log(ctx, AV_LOG_VERBOSE, "x:%f xi:%d y:%f yi:%d\n", |
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s->var_values[VAR_X], s->x, |
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s->var_values[VAR_Y], s->y); |
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} |
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av_log(ctx, AV_LOG_VERBOSE, |
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"main w:%d h:%d fmt:%s overlay w:%d h:%d fmt:%s\n", |
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ctx->inputs[MAIN]->w, ctx->inputs[MAIN]->h, |
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av_get_pix_fmt_name(ctx->inputs[MAIN]->format), |
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ctx->inputs[OVERLAY]->w, ctx->inputs[OVERLAY]->h, |
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av_get_pix_fmt_name(ctx->inputs[OVERLAY]->format)); |
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return 0; |
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} |
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static int config_output(AVFilterLink *outlink) |
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{ |
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AVFilterContext *ctx = outlink->src; |
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OverlayContext *s = ctx->priv; |
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int ret; |
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if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0) |
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return ret; |
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outlink->w = ctx->inputs[MAIN]->w; |
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outlink->h = ctx->inputs[MAIN]->h; |
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outlink->time_base = ctx->inputs[MAIN]->time_base; |
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return ff_framesync_configure(&s->fs); |
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} |
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// divide by 255 and round to nearest |
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// apply a fast variant: (X+127)/255 = ((X+127)*257+257)>>16 = ((X+128)*257)>>16 |
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#define FAST_DIV255(x) ((((x) + 128) * 257) >> 16) |
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// calculate the unpremultiplied alpha, applying the general equation: |
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// alpha = alpha_overlay / ( (alpha_main + alpha_overlay) - (alpha_main * alpha_overlay) ) |
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// (((x) << 16) - ((x) << 9) + (x)) is a faster version of: 255 * 255 * x |
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// ((((x) + (y)) << 8) - ((x) + (y)) - (y) * (x)) is a faster version of: 255 * (x + y) |
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#define UNPREMULTIPLY_ALPHA(x, y) ((((x) << 16) - ((x) << 9) + (x)) / ((((x) + (y)) << 8) - ((x) + (y)) - (y) * (x))) |
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/** |
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* Blend image in src to destination buffer dst at position (x, y). |
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*/ |
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static av_always_inline void blend_slice_packed_rgb(AVFilterContext *ctx, |
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AVFrame *dst, const AVFrame *src, |
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int main_has_alpha, int x, int y, |
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int is_straight, int jobnr, int nb_jobs) |
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{ |
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OverlayContext *s = ctx->priv; |
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int i, imax, j, jmax; |
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const int src_w = src->width; |
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const int src_h = src->height; |
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const int dst_w = dst->width; |
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const int dst_h = dst->height; |
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uint8_t alpha; ///< the amount of overlay to blend on to main |
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const int dr = s->main_rgba_map[R]; |
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const int dg = s->main_rgba_map[G]; |
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const int db = s->main_rgba_map[B]; |
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const int da = s->main_rgba_map[A]; |
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const int dstep = s->main_pix_step[0]; |
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const int sr = s->overlay_rgba_map[R]; |
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const int sg = s->overlay_rgba_map[G]; |
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const int sb = s->overlay_rgba_map[B]; |
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const int sa = s->overlay_rgba_map[A]; |
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const int sstep = s->overlay_pix_step[0]; |
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int slice_start, slice_end; |
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uint8_t *S, *sp, *d, *dp; |
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i = FFMAX(-y, 0); |
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imax = FFMIN3(-y + dst_h, FFMIN(src_h, dst_h), y + src_h); |
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slice_start = i + (imax * jobnr) / nb_jobs; |
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slice_end = i + (imax * (jobnr+1)) / nb_jobs; |
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sp = src->data[0] + (slice_start) * src->linesize[0]; |
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dp = dst->data[0] + (y + slice_start) * dst->linesize[0]; |
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for (i = slice_start; i < slice_end; i++) { |
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j = FFMAX(-x, 0); |
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S = sp + j * sstep; |
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d = dp + (x+j) * dstep; |
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for (jmax = FFMIN(-x + dst_w, src_w); j < jmax; j++) { |
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alpha = S[sa]; |
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// if the main channel has an alpha channel, alpha has to be calculated |
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// to create an un-premultiplied (straight) alpha value |
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if (main_has_alpha && alpha != 0 && alpha != 255) { |
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uint8_t alpha_d = d[da]; |
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alpha = UNPREMULTIPLY_ALPHA(alpha, alpha_d); |
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} |
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switch (alpha) { |
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case 0: |
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break; |
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case 255: |
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d[dr] = S[sr]; |
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d[dg] = S[sg]; |
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d[db] = S[sb]; |
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break; |
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default: |
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// main_value = main_value * (1 - alpha) + overlay_value * alpha |
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// since alpha is in the range 0-255, the result must divided by 255 |
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d[dr] = is_straight ? FAST_DIV255(d[dr] * (255 - alpha) + S[sr] * alpha) : |
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FFMIN(FAST_DIV255(d[dr] * (255 - alpha)) + S[sr], 255); |
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d[dg] = is_straight ? FAST_DIV255(d[dg] * (255 - alpha) + S[sg] * alpha) : |
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FFMIN(FAST_DIV255(d[dg] * (255 - alpha)) + S[sg], 255); |
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d[db] = is_straight ? FAST_DIV255(d[db] * (255 - alpha) + S[sb] * alpha) : |
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FFMIN(FAST_DIV255(d[db] * (255 - alpha)) + S[sb], 255); |
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} |
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if (main_has_alpha) { |
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switch (alpha) { |
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case 0: |
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break; |
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case 255: |
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d[da] = S[sa]; |
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break; |
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default: |
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// apply alpha compositing: main_alpha += (1-main_alpha) * overlay_alpha |
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d[da] += FAST_DIV255((255 - d[da]) * S[sa]); |
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} |
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} |
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d += dstep; |
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S += sstep; |
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} |
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dp += dst->linesize[0]; |
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sp += src->linesize[0]; |
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} |
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} |
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#define DEFINE_BLEND_PLANE(depth, nbits) \ |
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static av_always_inline void blend_plane_##depth##_##nbits##bits(AVFilterContext *ctx, \ |
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AVFrame *dst, const AVFrame *src, \ |
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int src_w, int src_h, \ |
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int dst_w, int dst_h, \ |
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int i, int hsub, int vsub, \ |
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int x, int y, \ |
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int main_has_alpha, \ |
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int dst_plane, \ |
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int dst_offset, \ |
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int dst_step, \ |
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int straight, \ |
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int yuv, \ |
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int jobnr, \ |
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int nb_jobs) \ |
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{ \ |
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OverlayContext *octx = ctx->priv; \ |
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int src_wp = AV_CEIL_RSHIFT(src_w, hsub); \ |
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int src_hp = AV_CEIL_RSHIFT(src_h, vsub); \ |
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int dst_wp = AV_CEIL_RSHIFT(dst_w, hsub); \ |
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int dst_hp = AV_CEIL_RSHIFT(dst_h, vsub); \ |
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int yp = y>>vsub; \ |
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int xp = x>>hsub; \ |
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uint##depth##_t *s, *sp, *d, *dp, *dap, *a, *da, *ap; \ |
|
int jmax, j, k, kmax; \ |
|
int slice_start, slice_end; \ |
|
const uint##depth##_t max = (1 << nbits) - 1; \ |
|
const uint##depth##_t mid = (1 << (nbits -1)) ; \ |
|
int bytes = depth / 8; \ |
|
\ |
|
dst_step /= bytes; \ |
|
j = FFMAX(-yp, 0); \ |
|
jmax = FFMIN3(-yp + dst_hp, FFMIN(src_hp, dst_hp), yp + src_hp); \ |
|
\ |
|
slice_start = j + (jmax * jobnr) / nb_jobs; \ |
|
slice_end = j + (jmax * (jobnr+1)) / nb_jobs; \ |
|
\ |
|
sp = (uint##depth##_t *)(src->data[i] + (slice_start) * src->linesize[i]); \ |
|
dp = (uint##depth##_t *)(dst->data[dst_plane] \ |
|
+ (yp + slice_start) * dst->linesize[dst_plane] \ |
|
+ dst_offset); \ |
|
ap = (uint##depth##_t *)(src->data[3] + (slice_start << vsub) * src->linesize[3]); \ |
|
dap = (uint##depth##_t *)(dst->data[3] + ((yp + slice_start) << vsub) * dst->linesize[3]); \ |
|
\ |
|
for (j = slice_start; j < slice_end; j++) { \ |
|
k = FFMAX(-xp, 0); \ |
|
d = dp + (xp+k) * dst_step; \ |
|
s = sp + k; \ |
|
a = ap + (k<<hsub); \ |
|
da = dap + ((xp+k) << hsub); \ |
|
kmax = FFMIN(-xp + dst_wp, src_wp); \ |
|
\ |
|
if (nbits == 8 && ((vsub && j+1 < src_hp) || !vsub) && octx->blend_row[i]) { \ |
|
int c = octx->blend_row[i]((uint8_t*)d, (uint8_t*)da, (uint8_t*)s, \ |
|
(uint8_t*)a, kmax - k, src->linesize[3]); \ |
|
\ |
|
s += c; \ |
|
d += dst_step * c; \ |
|
da += (1 << hsub) * c; \ |
|
a += (1 << hsub) * c; \ |
|
k += c; \ |
|
} \ |
|
for (; k < kmax; k++) { \ |
|
int alpha_v, alpha_h, alpha; \ |
|
\ |
|
/* average alpha for color components, improve quality */ \ |
|
if (hsub && vsub && j+1 < src_hp && k+1 < src_wp) { \ |
|
alpha = (a[0] + a[src->linesize[3]] + \ |
|
a[1] + a[src->linesize[3]+1]) >> 2; \ |
|
} else if (hsub || vsub) { \ |
|
alpha_h = hsub && k+1 < src_wp ? \ |
|
(a[0] + a[1]) >> 1 : a[0]; \ |
|
alpha_v = vsub && j+1 < src_hp ? \ |
|
(a[0] + a[src->linesize[3]]) >> 1 : a[0]; \ |
|
alpha = (alpha_v + alpha_h) >> 1; \ |
|
} else \ |
|
alpha = a[0]; \ |
|
/* if the main channel has an alpha channel, alpha has to be calculated */ \ |
|
/* to create an un-premultiplied (straight) alpha value */ \ |
|
if (main_has_alpha && alpha != 0 && alpha != max) { \ |
|
/* average alpha for color components, improve quality */ \ |
|
uint8_t alpha_d; \ |
|
if (hsub && vsub && j+1 < src_hp && k+1 < src_wp) { \ |
|
alpha_d = (da[0] + da[dst->linesize[3]] + \ |
|
da[1] + da[dst->linesize[3]+1]) >> 2; \ |
|
} else if (hsub || vsub) { \ |
|
alpha_h = hsub && k+1 < src_wp ? \ |
|
(da[0] + da[1]) >> 1 : da[0]; \ |
|
alpha_v = vsub && j+1 < src_hp ? \ |
|
(da[0] + da[dst->linesize[3]]) >> 1 : da[0]; \ |
|
alpha_d = (alpha_v + alpha_h) >> 1; \ |
|
} else \ |
|
alpha_d = da[0]; \ |
|
alpha = UNPREMULTIPLY_ALPHA(alpha, alpha_d); \ |
|
} \ |
|
if (straight) { \ |
|
if (nbits > 8) \ |
|
*d = (*d * (max - alpha) + *s * alpha) / max; \ |
|
else \ |
|
*d = FAST_DIV255(*d * (255 - alpha) + *s * alpha); \ |
|
} else { \ |
|
if (nbits > 8) { \ |
|
if (i && yuv) \ |
|
*d = av_clip((*d * (max - alpha) + *s * alpha) / max + *s - mid, -mid, mid) + mid; \ |
|
else \ |
|
*d = av_clip_uintp2((*d * (max - alpha) + *s * alpha) / max + *s - (16<<(nbits-8)),\ |
|
nbits);\ |
|
} else { \ |
|
if (i && yuv) \ |
|
*d = av_clip(FAST_DIV255((*d - mid) * (max - alpha)) + *s - mid, -mid, mid) + mid; \ |
|
else \ |
|
*d = av_clip_uint8(FAST_DIV255(*d * (255 - alpha)) + *s - 16); \ |
|
} \ |
|
} \ |
|
s++; \ |
|
d += dst_step; \ |
|
da += 1 << hsub; \ |
|
a += 1 << hsub; \ |
|
} \ |
|
dp += dst->linesize[dst_plane] / bytes; \ |
|
sp += src->linesize[i] / bytes; \ |
|
ap += (1 << vsub) * src->linesize[3] / bytes; \ |
|
dap += (1 << vsub) * dst->linesize[3] / bytes; \ |
|
} \ |
|
} |
|
DEFINE_BLEND_PLANE(8, 8) |
|
DEFINE_BLEND_PLANE(16, 10) |
|
|
|
#define DEFINE_ALPHA_COMPOSITE(depth, nbits) \ |
|
static inline void alpha_composite_##depth##_##nbits##bits(const AVFrame *src, const AVFrame *dst, \ |
|
int src_w, int src_h, \ |
|
int dst_w, int dst_h, \ |
|
int x, int y, \ |
|
int jobnr, int nb_jobs) \ |
|
{ \ |
|
uint##depth##_t alpha; /* the amount of overlay to blend on to main */ \ |
|
uint##depth##_t *s, *sa, *d, *da; \ |
|
int i, imax, j, jmax; \ |
|
int slice_start, slice_end; \ |
|
const uint##depth##_t max = (1 << nbits) - 1; \ |
|
int bytes = depth / 8; \ |
|
\ |
|
imax = FFMIN3(-y + dst_h, FFMIN(src_h, dst_h), y + src_h); \ |
|
i = FFMAX(-y, 0); \ |
|
\ |
|
slice_start = i + (imax * jobnr) / nb_jobs; \ |
|
slice_end = i + ((imax * (jobnr+1)) / nb_jobs); \ |
|
\ |
|
sa = (uint##depth##_t *)(src->data[3] + (slice_start) * src->linesize[3]); \ |
|
da = (uint##depth##_t *)(dst->data[3] + (y + slice_start) * dst->linesize[3]); \ |
|
\ |
|
for (i = slice_start; i < slice_end; i++) { \ |
|
j = FFMAX(-x, 0); \ |
|
s = sa + j; \ |
|
d = da + x+j; \ |
|
\ |
|
for (jmax = FFMIN(-x + dst_w, src_w); j < jmax; j++) { \ |
|
alpha = *s; \ |
|
if (alpha != 0 && alpha != max) { \ |
|
uint8_t alpha_d = *d; \ |
|
alpha = UNPREMULTIPLY_ALPHA(alpha, alpha_d); \ |
|
} \ |
|
if (alpha == max) \ |
|
*d = *s; \ |
|
else if (alpha > 0) { \ |
|
/* apply alpha compositing: main_alpha += (1-main_alpha) * overlay_alpha */ \ |
|
if (nbits > 8) \ |
|
*d += (max - *d) * *s / max; \ |
|
else \ |
|
*d += FAST_DIV255((max - *d) * *s); \ |
|
} \ |
|
d += 1; \ |
|
s += 1; \ |
|
} \ |
|
da += dst->linesize[3] / bytes; \ |
|
sa += src->linesize[3] / bytes; \ |
|
} \ |
|
} |
|
DEFINE_ALPHA_COMPOSITE(8, 8) |
|
DEFINE_ALPHA_COMPOSITE(16, 10) |
|
|
|
#define DEFINE_BLEND_SLICE_YUV(depth, nbits) \ |
|
static av_always_inline void blend_slice_yuv_##depth##_##nbits##bits(AVFilterContext *ctx, \ |
|
AVFrame *dst, const AVFrame *src, \ |
|
int hsub, int vsub, \ |
|
int main_has_alpha, \ |
|
int x, int y, \ |
|
int is_straight, \ |
|
int jobnr, int nb_jobs) \ |
|
{ \ |
|
OverlayContext *s = ctx->priv; \ |
|
const int src_w = src->width; \ |
|
const int src_h = src->height; \ |
|
const int dst_w = dst->width; \ |
|
const int dst_h = dst->height; \ |
|
\ |
|
blend_plane_##depth##_##nbits##bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 0, 0, 0, \ |
|
x, y, main_has_alpha, s->main_desc->comp[0].plane, s->main_desc->comp[0].offset, \ |
|
s->main_desc->comp[0].step, is_straight, 1, jobnr, nb_jobs); \ |
|
blend_plane_##depth##_##nbits##bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 1, hsub, vsub, \ |
|
x, y, main_has_alpha, s->main_desc->comp[1].plane, s->main_desc->comp[1].offset, \ |
|
s->main_desc->comp[1].step, is_straight, 1, jobnr, nb_jobs); \ |
|
blend_plane_##depth##_##nbits##bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 2, hsub, vsub, \ |
|
x, y, main_has_alpha, s->main_desc->comp[2].plane, s->main_desc->comp[2].offset, \ |
|
s->main_desc->comp[2].step, is_straight, 1, jobnr, nb_jobs); \ |
|
\ |
|
if (main_has_alpha) \ |
|
alpha_composite_##depth##_##nbits##bits(src, dst, src_w, src_h, dst_w, dst_h, x, y, \ |
|
jobnr, nb_jobs); \ |
|
} |
|
DEFINE_BLEND_SLICE_YUV(8, 8) |
|
DEFINE_BLEND_SLICE_YUV(16, 10) |
|
|
|
static av_always_inline void blend_slice_planar_rgb(AVFilterContext *ctx, |
|
AVFrame *dst, const AVFrame *src, |
|
int hsub, int vsub, |
|
int main_has_alpha, |
|
int x, int y, |
|
int is_straight, |
|
int jobnr, |
|
int nb_jobs) |
|
{ |
|
OverlayContext *s = ctx->priv; |
|
const int src_w = src->width; |
|
const int src_h = src->height; |
|
const int dst_w = dst->width; |
|
const int dst_h = dst->height; |
|
|
|
blend_plane_8_8bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 0, 0, 0, x, y, main_has_alpha, |
|
s->main_desc->comp[1].plane, s->main_desc->comp[1].offset, s->main_desc->comp[1].step, is_straight, 0, |
|
jobnr, nb_jobs); |
|
blend_plane_8_8bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 1, hsub, vsub, x, y, main_has_alpha, |
|
s->main_desc->comp[2].plane, s->main_desc->comp[2].offset, s->main_desc->comp[2].step, is_straight, 0, |
|
jobnr, nb_jobs); |
|
blend_plane_8_8bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 2, hsub, vsub, x, y, main_has_alpha, |
|
s->main_desc->comp[0].plane, s->main_desc->comp[0].offset, s->main_desc->comp[0].step, is_straight, 0, |
|
jobnr, nb_jobs); |
|
|
|
if (main_has_alpha) |
|
alpha_composite_8_8bits(src, dst, src_w, src_h, dst_w, dst_h, x, y, jobnr, nb_jobs); |
|
} |
|
|
|
#define DEFINE_BLEND_SLICE_PLANAR_FMT(format_, blend_slice_fn_suffix_, hsub_, vsub_, main_has_alpha_, direct_) \ |
|
static int blend_slice_##format_(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \ |
|
{ \ |
|
OverlayContext *s = ctx->priv; \ |
|
ThreadData *td = arg; \ |
|
blend_slice_##blend_slice_fn_suffix_(ctx, td->dst, td->src, \ |
|
hsub_, vsub_, main_has_alpha_, \ |
|
s->x, s->y, direct_, \ |
|
jobnr, nb_jobs); \ |
|
return 0; \ |
|
} |
|
|
|
// FMT FN H V A D |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuv420, yuv_8_8bits, 1, 1, 0, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuva420, yuv_8_8bits, 1, 1, 1, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuv420p10, yuv_16_10bits, 1, 1, 0, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuva420p10, yuv_16_10bits, 1, 1, 1, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuv422p10, yuv_16_10bits, 1, 0, 0, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuva422p10, yuv_16_10bits, 1, 0, 1, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuv422, yuv_8_8bits, 1, 0, 0, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuva422, yuv_8_8bits, 1, 0, 1, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuv444, yuv_8_8bits, 0, 0, 0, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuva444, yuv_8_8bits, 0, 0, 1, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuv444p10, yuv_16_10bits, 0, 0, 0, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuva444p10, yuv_16_10bits, 0, 0, 1, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(gbrp, planar_rgb, 0, 0, 0, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(gbrap, planar_rgb, 0, 0, 1, 1); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuv420_pm, yuv_8_8bits, 1, 1, 0, 0); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuva420_pm, yuv_8_8bits, 1, 1, 1, 0); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuv422_pm, yuv_8_8bits, 1, 0, 0, 0); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuva422_pm, yuv_8_8bits, 1, 0, 1, 0); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuv444_pm, yuv_8_8bits, 0, 0, 0, 0); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(yuva444_pm, yuv_8_8bits, 0, 0, 1, 0); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(gbrp_pm, planar_rgb, 0, 0, 0, 0); |
|
DEFINE_BLEND_SLICE_PLANAR_FMT(gbrap_pm, planar_rgb, 0, 0, 1, 0); |
|
|
|
#define DEFINE_BLEND_SLICE_PACKED_FMT(format_, blend_slice_fn_suffix_, main_has_alpha_, direct_) \ |
|
static int blend_slice_##format_(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \ |
|
{ \ |
|
OverlayContext *s = ctx->priv; \ |
|
ThreadData *td = arg; \ |
|
blend_slice_packed_##blend_slice_fn_suffix_(ctx, td->dst, td->src, \ |
|
main_has_alpha_, \ |
|
s->x, s->y, direct_, \ |
|
jobnr, nb_jobs); \ |
|
return 0; \ |
|
} |
|
|
|
// FMT FN A D |
|
DEFINE_BLEND_SLICE_PACKED_FMT(rgb, rgb, 0, 1); |
|
DEFINE_BLEND_SLICE_PACKED_FMT(rgba, rgb, 1, 1); |
|
DEFINE_BLEND_SLICE_PACKED_FMT(rgb_pm, rgb, 0, 0); |
|
DEFINE_BLEND_SLICE_PACKED_FMT(rgba_pm, rgb, 1, 0); |
|
|
|
static int config_input_main(AVFilterLink *inlink) |
|
{ |
|
OverlayContext *s = inlink->dst->priv; |
|
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format); |
|
|
|
av_image_fill_max_pixsteps(s->main_pix_step, NULL, pix_desc); |
|
|
|
s->hsub = pix_desc->log2_chroma_w; |
|
s->vsub = pix_desc->log2_chroma_h; |
|
|
|
s->main_desc = pix_desc; |
|
|
|
s->main_is_packed_rgb = |
|
ff_fill_rgba_map(s->main_rgba_map, inlink->format) >= 0; |
|
s->main_has_alpha = ff_fmt_is_in(inlink->format, alpha_pix_fmts); |
|
switch (s->format) { |
|
case OVERLAY_FORMAT_YUV420: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_yuva420 : blend_slice_yuv420; |
|
break; |
|
case OVERLAY_FORMAT_YUV420P10: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_yuva420p10 : blend_slice_yuv420p10; |
|
break; |
|
case OVERLAY_FORMAT_YUV422: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_yuva422 : blend_slice_yuv422; |
|
break; |
|
case OVERLAY_FORMAT_YUV422P10: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_yuva422p10 : blend_slice_yuv422p10; |
|
break; |
|
case OVERLAY_FORMAT_YUV444: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_yuva444 : blend_slice_yuv444; |
|
break; |
|
case OVERLAY_FORMAT_YUV444P10: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_yuva444p10 : blend_slice_yuv444p10; |
|
break; |
|
case OVERLAY_FORMAT_RGB: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_rgba : blend_slice_rgb; |
|
break; |
|
case OVERLAY_FORMAT_GBRP: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_gbrap : blend_slice_gbrp; |
|
break; |
|
case OVERLAY_FORMAT_AUTO: |
|
switch (inlink->format) { |
|
case AV_PIX_FMT_YUVA420P: |
|
s->blend_slice = blend_slice_yuva420; |
|
break; |
|
case AV_PIX_FMT_YUVA420P10: |
|
s->blend_slice = blend_slice_yuva420p10; |
|
break; |
|
case AV_PIX_FMT_YUVA422P: |
|
s->blend_slice = blend_slice_yuva422; |
|
break; |
|
case AV_PIX_FMT_YUVA422P10: |
|
s->blend_slice = blend_slice_yuva422p10; |
|
break; |
|
case AV_PIX_FMT_YUVA444P: |
|
s->blend_slice = blend_slice_yuva444; |
|
break; |
|
case AV_PIX_FMT_YUVA444P10: |
|
s->blend_slice = blend_slice_yuva444p10; |
|
break; |
|
case AV_PIX_FMT_ARGB: |
|
case AV_PIX_FMT_RGBA: |
|
case AV_PIX_FMT_BGRA: |
|
case AV_PIX_FMT_ABGR: |
|
s->blend_slice = blend_slice_rgba; |
|
break; |
|
case AV_PIX_FMT_GBRAP: |
|
s->blend_slice = blend_slice_gbrap; |
|
break; |
|
default: |
|
av_assert0(0); |
|
break; |
|
} |
|
break; |
|
} |
|
|
|
if (!s->alpha_format) |
|
goto end; |
|
|
|
switch (s->format) { |
|
case OVERLAY_FORMAT_YUV420: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_yuva420_pm : blend_slice_yuv420_pm; |
|
break; |
|
case OVERLAY_FORMAT_YUV422: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_yuva422_pm : blend_slice_yuv422_pm; |
|
break; |
|
case OVERLAY_FORMAT_YUV444: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_yuva444_pm : blend_slice_yuv444_pm; |
|
break; |
|
case OVERLAY_FORMAT_RGB: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_rgba_pm : blend_slice_rgb_pm; |
|
break; |
|
case OVERLAY_FORMAT_GBRP: |
|
s->blend_slice = s->main_has_alpha ? blend_slice_gbrap_pm : blend_slice_gbrp_pm; |
|
break; |
|
case OVERLAY_FORMAT_AUTO: |
|
switch (inlink->format) { |
|
case AV_PIX_FMT_YUVA420P: |
|
s->blend_slice = blend_slice_yuva420_pm; |
|
break; |
|
case AV_PIX_FMT_YUVA422P: |
|
s->blend_slice = blend_slice_yuva422_pm; |
|
break; |
|
case AV_PIX_FMT_YUVA444P: |
|
s->blend_slice = blend_slice_yuva444_pm; |
|
break; |
|
case AV_PIX_FMT_ARGB: |
|
case AV_PIX_FMT_RGBA: |
|
case AV_PIX_FMT_BGRA: |
|
case AV_PIX_FMT_ABGR: |
|
s->blend_slice = blend_slice_rgba_pm; |
|
break; |
|
case AV_PIX_FMT_GBRAP: |
|
s->blend_slice = blend_slice_gbrap_pm; |
|
break; |
|
default: |
|
av_assert0(0); |
|
break; |
|
} |
|
break; |
|
} |
|
|
|
end: |
|
#if ARCH_X86 |
|
ff_overlay_init_x86(s, s->format, inlink->format, |
|
s->alpha_format, s->main_has_alpha); |
|
#endif |
|
|
|
return 0; |
|
} |
|
|
|
static int do_blend(FFFrameSync *fs) |
|
{ |
|
AVFilterContext *ctx = fs->parent; |
|
AVFrame *mainpic, *second; |
|
OverlayContext *s = ctx->priv; |
|
AVFilterLink *inlink = ctx->inputs[0]; |
|
FilterLink *inl = ff_filter_link(inlink); |
|
int ret; |
|
|
|
ret = ff_framesync_dualinput_get_writable(fs, &mainpic, &second); |
|
if (ret < 0) |
|
return ret; |
|
if (!second) |
|
return ff_filter_frame(ctx->outputs[0], mainpic); |
|
|
|
if (s->eval_mode == EVAL_MODE_FRAME) { |
|
|
|
s->var_values[VAR_N] = inl->frame_count_out; |
|
s->var_values[VAR_T] = mainpic->pts == AV_NOPTS_VALUE ? |
|
NAN : mainpic->pts * av_q2d(inlink->time_base); |
|
#if FF_API_FRAME_PKT |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
{ |
|
int64_t pos = mainpic->pkt_pos; |
|
s->var_values[VAR_POS] = pos == -1 ? NAN : pos; |
|
} |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
|
|
s->var_values[VAR_OVERLAY_W] = s->var_values[VAR_OW] = second->width; |
|
s->var_values[VAR_OVERLAY_H] = s->var_values[VAR_OH] = second->height; |
|
s->var_values[VAR_MAIN_W ] = s->var_values[VAR_MW] = mainpic->width; |
|
s->var_values[VAR_MAIN_H ] = s->var_values[VAR_MH] = mainpic->height; |
|
|
|
eval_expr(ctx); |
|
av_log(ctx, AV_LOG_DEBUG, "n:%f t:%f x:%f xi:%d y:%f yi:%d\n", |
|
s->var_values[VAR_N], s->var_values[VAR_T], |
|
s->var_values[VAR_X], s->x, |
|
s->var_values[VAR_Y], s->y); |
|
} |
|
|
|
if (s->x < mainpic->width && s->x + second->width >= 0 && |
|
s->y < mainpic->height && s->y + second->height >= 0) { |
|
ThreadData td; |
|
|
|
td.dst = mainpic; |
|
td.src = second; |
|
ff_filter_execute(ctx, s->blend_slice, &td, NULL, FFMIN(FFMAX(1, FFMIN3(s->y + second->height, FFMIN(second->height, mainpic->height), mainpic->height - s->y)), |
|
ff_filter_get_nb_threads(ctx))); |
|
} |
|
return ff_filter_frame(ctx->outputs[0], mainpic); |
|
} |
|
|
|
static av_cold int init(AVFilterContext *ctx) |
|
{ |
|
OverlayContext *s = ctx->priv; |
|
|
|
s->fs.on_event = do_blend; |
|
return 0; |
|
} |
|
|
|
static int activate(AVFilterContext *ctx) |
|
{ |
|
OverlayContext *s = ctx->priv; |
|
return ff_framesync_activate(&s->fs); |
|
} |
|
|
|
#define OFFSET(x) offsetof(OverlayContext, x) |
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
|
|
|
static const AVOption overlay_options[] = { |
|
{ "x", "set the x expression", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, FLAGS }, |
|
{ "y", "set the y expression", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, FLAGS }, |
|
{ "eof_action", "Action to take when encountering EOF from secondary input ", |
|
OFFSET(fs.opt_eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT }, |
|
EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, .unit = "eof_action" }, |
|
{ "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, .unit = "eof_action" }, |
|
{ "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, .unit = "eof_action" }, |
|
{ "pass", "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, .flags = FLAGS, .unit = "eof_action" }, |
|
{ "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, {.i64 = EVAL_MODE_FRAME}, 0, EVAL_MODE_NB-1, FLAGS, .unit = "eval" }, |
|
{ "init", "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_INIT}, .flags = FLAGS, .unit = "eval" }, |
|
{ "frame", "eval expressions per-frame", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_FRAME}, .flags = FLAGS, .unit = "eval" }, |
|
{ "shortest", "force termination when the shortest input terminates", OFFSET(fs.opt_shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, |
|
{ "format", "set output format", OFFSET(format), AV_OPT_TYPE_INT, {.i64=OVERLAY_FORMAT_YUV420}, 0, OVERLAY_FORMAT_NB-1, FLAGS, .unit = "format" }, |
|
{ "yuv420", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV420}, .flags = FLAGS, .unit = "format" }, |
|
{ "yuv420p10", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV420P10}, .flags = FLAGS, .unit = "format" }, |
|
{ "yuv422", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV422}, .flags = FLAGS, .unit = "format" }, |
|
{ "yuv422p10", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV422P10}, .flags = FLAGS, .unit = "format" }, |
|
{ "yuv444", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV444}, .flags = FLAGS, .unit = "format" }, |
|
{ "yuv444p10", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV444P10}, .flags = FLAGS, .unit = "format" }, |
|
{ "rgb", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_RGB}, .flags = FLAGS, .unit = "format" }, |
|
{ "gbrp", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_GBRP}, .flags = FLAGS, .unit = "format" }, |
|
{ "auto", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_AUTO}, .flags = FLAGS, .unit = "format" }, |
|
{ "repeatlast", "repeat overlay of the last overlay frame", OFFSET(fs.opt_repeatlast), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS }, |
|
{ "alpha", "alpha format", OFFSET(alpha_format), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, .unit = "alpha_format" }, |
|
{ "straight", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, .flags = FLAGS, .unit = "alpha_format" }, |
|
{ "premultiplied", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, .flags = FLAGS, .unit = "alpha_format" }, |
|
{ NULL } |
|
}; |
|
|
|
FRAMESYNC_DEFINE_CLASS(overlay, OverlayContext, fs); |
|
|
|
static const AVFilterPad avfilter_vf_overlay_inputs[] = { |
|
{ |
|
.name = "main", |
|
.type = AVMEDIA_TYPE_VIDEO, |
|
.config_props = config_input_main, |
|
}, |
|
{ |
|
.name = "overlay", |
|
.type = AVMEDIA_TYPE_VIDEO, |
|
.config_props = config_input_overlay, |
|
}, |
|
}; |
|
|
|
static const AVFilterPad avfilter_vf_overlay_outputs[] = { |
|
{ |
|
.name = "default", |
|
.type = AVMEDIA_TYPE_VIDEO, |
|
.config_props = config_output, |
|
}, |
|
}; |
|
|
|
const AVFilter ff_vf_overlay = { |
|
.name = "overlay", |
|
.description = NULL_IF_CONFIG_SMALL("Overlay a video source on top of the input."), |
|
.preinit = overlay_framesync_preinit, |
|
.init = init, |
|
.uninit = uninit, |
|
.priv_size = sizeof(OverlayContext), |
|
.priv_class = &overlay_class, |
|
.activate = activate, |
|
.process_command = process_command, |
|
FILTER_INPUTS(avfilter_vf_overlay_inputs), |
|
FILTER_OUTPUTS(avfilter_vf_overlay_outputs), |
|
FILTER_QUERY_FUNC(query_formats), |
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | |
|
AVFILTER_FLAG_SLICE_THREADS, |
|
};
|
|
|