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/* |
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
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* Copyright (c) 2014 Clément Bœsch <u pkh me> |
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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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* Codec debug viewer filter. |
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* |
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* All the MV drawing code from Michael Niedermayer is extracted from |
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* libavcodec/mpegvideo.c. |
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* |
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* TODO: segmentation |
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*/ |
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#include "libavutil/imgutils.h" |
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#include "libavutil/motion_vector.h" |
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#include "libavutil/opt.h" |
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#include "avfilter.h" |
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#include "internal.h" |
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#define MV_P_FOR (1<<0) |
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#define MV_B_FOR (1<<1) |
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#define MV_B_BACK (1<<2) |
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#define MV_TYPE_FOR (1<<0) |
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#define MV_TYPE_BACK (1<<1) |
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#define FRAME_TYPE_I (1<<0) |
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#define FRAME_TYPE_P (1<<1) |
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#define FRAME_TYPE_B (1<<2) |
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typedef struct CodecViewContext { |
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const AVClass *class; |
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unsigned mv; |
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unsigned frame_type; |
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unsigned mv_type; |
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int hsub, vsub; |
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int qp; |
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} CodecViewContext; |
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#define OFFSET(x) offsetof(CodecViewContext, x) |
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
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#define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit } |
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static const AVOption codecview_options[] = { |
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{ "mv", "set motion vectors to visualize", OFFSET(mv), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "mv" }, |
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CONST("pf", "forward predicted MVs of P-frames", MV_P_FOR, "mv"), |
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CONST("bf", "forward predicted MVs of B-frames", MV_B_FOR, "mv"), |
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CONST("bb", "backward predicted MVs of B-frames", MV_B_BACK, "mv"), |
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{ "qp", NULL, OFFSET(qp), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, .flags = FLAGS }, |
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{ "mv_type", "set motion vectors type", OFFSET(mv_type), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "mv_type" }, |
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{ "mvt", "set motion vectors type", OFFSET(mv_type), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "mv_type" }, |
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CONST("fp", "forward predicted MVs", MV_TYPE_FOR, "mv_type"), |
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CONST("bp", "backward predicted MVs", MV_TYPE_BACK, "mv_type"), |
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{ "frame_type", "set frame types to visualize motion vectors of", OFFSET(frame_type), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "frame_type" }, |
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{ "ft", "set frame types to visualize motion vectors of", OFFSET(frame_type), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "frame_type" }, |
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CONST("if", "I-frames", FRAME_TYPE_I, "frame_type"), |
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CONST("pf", "P-frames", FRAME_TYPE_P, "frame_type"), |
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CONST("bf", "B-frames", FRAME_TYPE_B, "frame_type"), |
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{ NULL } |
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}; |
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AVFILTER_DEFINE_CLASS(codecview); |
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static int query_formats(AVFilterContext *ctx) |
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{ |
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// TODO: we can probably add way more pixel formats without any other |
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// changes; anything with 8-bit luma in first plane should be working |
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static const enum AVPixelFormat pix_fmts[] = {AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE}; |
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AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); |
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✗✓ |
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if (!fmts_list) |
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return AVERROR(ENOMEM); |
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return ff_set_common_formats(ctx, fmts_list); |
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} |
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static int clip_line(int *sx, int *sy, int *ex, int *ey, int maxx) |
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{ |
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✓✓ |
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if(*sx > *ex) |
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return clip_line(ex, ey, sx, sy, maxx); |
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✓✓ |
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if (*sx < 0) { |
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✗✓ |
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if (*ex < 0) |
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return 1; |
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*sy = *ey + (*sy - *ey) * (int64_t)*ex / (*ex - *sx); |
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*sx = 0; |
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} |
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✗✓ |
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if (*ex > maxx) { |
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if (*sx > maxx) |
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return 1; |
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*ey = *sy + (*ey - *sy) * (int64_t)(maxx - *sx) / (*ex - *sx); |
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*ex = maxx; |
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} |
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return 0; |
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} |
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/** |
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* Draw a line from (ex, ey) -> (sx, sy). |
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* @param w width of the image |
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* @param h height of the image |
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* @param stride stride/linesize of the image |
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* @param color color of the arrow |
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*/ |
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static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, |
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int w, int h, int stride, int color) |
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{ |
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int x, y, fr, f; |
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✗✓ |
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if (clip_line(&sx, &sy, &ex, &ey, w - 1)) |
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return; |
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✗✓ |
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if (clip_line(&sy, &sx, &ey, &ex, h - 1)) |
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return; |
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sx = av_clip(sx, 0, w - 1); |
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sy = av_clip(sy, 0, h - 1); |
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ex = av_clip(ex, 0, w - 1); |
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ey = av_clip(ey, 0, h - 1); |
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buf[sy * stride + sx] += color; |
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✓✓ |
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if (FFABS(ex - sx) > FFABS(ey - sy)) { |
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✓✓ |
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if (sx > ex) { |
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FFSWAP(int, sx, ex); |
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FFSWAP(int, sy, ey); |
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} |
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buf += sx + sy * stride; |
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ex -= sx; |
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f = ((ey - sy) << 16) / ex; |
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✓✓ |
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for (x = 0; x <= ex; x++) { |
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y = (x * f) >> 16; |
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fr = (x * f) & 0xFFFF; |
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buf[ y * stride + x] += (color * (0x10000 - fr)) >> 16; |
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✓✓ |
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if(fr) buf[(y + 1) * stride + x] += (color * fr ) >> 16; |
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} |
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} else { |
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✓✓ |
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if (sy > ey) { |
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FFSWAP(int, sx, ex); |
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FFSWAP(int, sy, ey); |
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} |
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buf += sx + sy * stride; |
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ey -= sy; |
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✓✓ |
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if (ey) |
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f = ((ex - sx) << 16) / ey; |
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else |
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f = 0; |
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✓✓ |
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for(y= 0; y <= ey; y++){ |
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x = (y*f) >> 16; |
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fr = (y*f) & 0xFFFF; |
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buf[y * stride + x ] += (color * (0x10000 - fr)) >> 16; |
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✓✓ |
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if(fr) buf[y * stride + x + 1] += (color * fr ) >> 16; |
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} |
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} |
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} |
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/** |
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* Draw an arrow from (ex, ey) -> (sx, sy). |
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* @param w width of the image |
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* @param h height of the image |
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* @param stride stride/linesize of the image |
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* @param color color of the arrow |
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*/ |
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static void draw_arrow(uint8_t *buf, int sx, int sy, int ex, |
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int ey, int w, int h, int stride, int color, int tail, int direction) |
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{ |
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int dx,dy; |
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✓✓ |
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if (direction) { |
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FFSWAP(int, sx, ex); |
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FFSWAP(int, sy, ey); |
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} |
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sx = av_clip(sx, -100, w + 100); |
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sy = av_clip(sy, -100, h + 100); |
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ex = av_clip(ex, -100, w + 100); |
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ey = av_clip(ey, -100, h + 100); |
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dx = ex - sx; |
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dy = ey - sy; |
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✓✓ |
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if (dx * dx + dy * dy > 3 * 3) { |
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int rx = dx + dy; |
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int ry = -dx + dy; |
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int length = sqrt((rx * rx + ry * ry) << 8); |
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// FIXME subpixel accuracy |
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✓✓ |
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rx = ROUNDED_DIV(rx * 3 << 4, length); |
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✓✓ |
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ry = ROUNDED_DIV(ry * 3 << 4, length); |
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✗✓ |
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if (tail) { |
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rx = -rx; |
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ry = -ry; |
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} |
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draw_line(buf, sx, sy, sx + rx, sy + ry, w, h, stride, color); |
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draw_line(buf, sx, sy, sx - ry, sy + rx, w, h, stride, color); |
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} |
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draw_line(buf, sx, sy, ex, ey, w, h, stride, color); |
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} |
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static int filter_frame(AVFilterLink *inlink, AVFrame *frame) |
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{ |
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AVFilterContext *ctx = inlink->dst; |
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CodecViewContext *s = ctx->priv; |
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AVFilterLink *outlink = ctx->outputs[0]; |
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✗✓ |
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if (s->qp) { |
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int qstride, qp_type; |
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int8_t *qp_table = av_frame_get_qp_table(frame, &qstride, &qp_type); |
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if (qp_table) { |
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int x, y; |
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const int w = AV_CEIL_RSHIFT(frame->width, s->hsub); |
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const int h = AV_CEIL_RSHIFT(frame->height, s->vsub); |
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uint8_t *pu = frame->data[1]; |
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uint8_t *pv = frame->data[2]; |
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const int lzu = frame->linesize[1]; |
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const int lzv = frame->linesize[2]; |
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for (y = 0; y < h; y++) { |
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for (x = 0; x < w; x++) { |
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const int qp = ff_norm_qscale(qp_table[(y >> 3) * qstride + (x >> 3)], qp_type) * 128/31; |
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pu[x] = pv[x] = qp; |
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} |
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pu += lzu; |
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pv += lzv; |
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} |
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} |
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} |
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✗✓✗✗
|
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if (s->mv || s->mv_type) { |
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|
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AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_MOTION_VECTORS); |
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✓✓ |
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if (sd) { |
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int i; |
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const AVMotionVector *mvs = (const AVMotionVector *)sd->data; |
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✗✓✗✗
|
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const int is_iframe = (s->frame_type & FRAME_TYPE_I) && frame->pict_type == AV_PICTURE_TYPE_I; |
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✗✓✗✗
|
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const int is_pframe = (s->frame_type & FRAME_TYPE_P) && frame->pict_type == AV_PICTURE_TYPE_P; |
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✗✓✗✗
|
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const int is_bframe = (s->frame_type & FRAME_TYPE_B) && frame->pict_type == AV_PICTURE_TYPE_B; |
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✓✓ |
3591 |
for (i = 0; i < sd->size / sizeof(*mvs); i++) { |
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const AVMotionVector *mv = &mvs[i]; |
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3560 |
const int direction = mv->source > 0; |
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✗✓ |
3560 |
if (s->mv_type) { |
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const int is_fp = direction == 0 && (s->mv_type & MV_TYPE_FOR); |
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const int is_bp = direction == 1 && (s->mv_type & MV_TYPE_BACK); |
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if ((!s->frame_type && (is_fp || is_bp)) || |
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is_iframe && is_fp || is_iframe && is_bp || |
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is_pframe && is_fp || |
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is_bframe && is_fp || is_bframe && is_bp) |
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draw_arrow(frame->data[0], mv->dst_x, mv->dst_y, mv->src_x, mv->src_y, |
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frame->width, frame->height, frame->linesize[0], |
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100, 0, direction); |
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✓✗ |
3560 |
} else if (s->mv) |
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✓✓✓✗
✓✓✓✓
|
3560 |
if ((direction == 0 && (s->mv & MV_P_FOR) && frame->pict_type == AV_PICTURE_TYPE_P) || |
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✓✗✗✓
✓✗ |
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(direction == 0 && (s->mv & MV_B_FOR) && frame->pict_type == AV_PICTURE_TYPE_B) || |
272 |
✓✗✓✗
|
1164 |
(direction == 1 && (s->mv & MV_B_BACK) && frame->pict_type == AV_PICTURE_TYPE_B)) |
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draw_arrow(frame->data[0], mv->dst_x, mv->dst_y, mv->src_x, mv->src_y, |
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frame->width, frame->height, frame->linesize[0], |
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100, 0, direction); |
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} |
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} |
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} |
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|
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return ff_filter_frame(outlink, frame); |
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} |
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283 |
|
2 |
static int config_input(AVFilterLink *inlink) |
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{ |
285 |
|
2 |
AVFilterContext *ctx = inlink->dst; |
286 |
|
2 |
CodecViewContext *s = ctx->priv; |
287 |
|
2 |
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
288 |
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289 |
|
2 |
s->hsub = desc->log2_chroma_w; |
290 |
|
2 |
s->vsub = desc->log2_chroma_h; |
291 |
|
2 |
return 0; |
292 |
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} |
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|
294 |
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static const AVFilterPad codecview_inputs[] = { |
295 |
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{ |
296 |
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.name = "default", |
297 |
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.type = AVMEDIA_TYPE_VIDEO, |
298 |
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.filter_frame = filter_frame, |
299 |
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.config_props = config_input, |
300 |
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.needs_writable = 1, |
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}, |
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{ NULL } |
303 |
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}; |
304 |
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305 |
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static const AVFilterPad codecview_outputs[] = { |
306 |
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{ |
307 |
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.name = "default", |
308 |
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.type = AVMEDIA_TYPE_VIDEO, |
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}, |
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{ NULL } |
311 |
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}; |
312 |
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313 |
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AVFilter ff_vf_codecview = { |
314 |
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.name = "codecview", |
315 |
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.description = NULL_IF_CONFIG_SMALL("Visualize information about some codecs."), |
316 |
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.priv_size = sizeof(CodecViewContext), |
317 |
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.query_formats = query_formats, |
318 |
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.inputs = codecview_inputs, |
319 |
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.outputs = codecview_outputs, |
320 |
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.priv_class = &codecview_class, |
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, |
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}; |