| /* |
| * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
| * Copyright (c) 2014 Clément Bœsch <u pkh me> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * Codec debug viewer filter. |
| * |
| * All the MV drawing code from Michael Niedermayer is extracted from |
| * libavcodec/mpegvideo.c. |
| * |
| * TODO: segmentation |
| */ |
| |
| #include "libavutil/imgutils.h" |
| #include "libavutil/motion_vector.h" |
| #include "libavutil/opt.h" |
| #include "avfilter.h" |
| #include "qp_table.h" |
| #include "internal.h" |
| |
| #define MV_P_FOR (1<<0) |
| #define MV_B_FOR (1<<1) |
| #define MV_B_BACK (1<<2) |
| #define MV_TYPE_FOR (1<<0) |
| #define MV_TYPE_BACK (1<<1) |
| #define FRAME_TYPE_I (1<<0) |
| #define FRAME_TYPE_P (1<<1) |
| #define FRAME_TYPE_B (1<<2) |
| |
| typedef struct CodecViewContext { |
| const AVClass *class; |
| unsigned mv; |
| unsigned frame_type; |
| unsigned mv_type; |
| int hsub, vsub; |
| int qp; |
| } CodecViewContext; |
| |
| #define OFFSET(x) offsetof(CodecViewContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit } |
| |
| static const AVOption codecview_options[] = { |
| { "mv", "set motion vectors to visualize", OFFSET(mv), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "mv" }, |
| CONST("pf", "forward predicted MVs of P-frames", MV_P_FOR, "mv"), |
| CONST("bf", "forward predicted MVs of B-frames", MV_B_FOR, "mv"), |
| CONST("bb", "backward predicted MVs of B-frames", MV_B_BACK, "mv"), |
| { "qp", NULL, OFFSET(qp), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, .flags = FLAGS }, |
| { "mv_type", "set motion vectors type", OFFSET(mv_type), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "mv_type" }, |
| { "mvt", "set motion vectors type", OFFSET(mv_type), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "mv_type" }, |
| CONST("fp", "forward predicted MVs", MV_TYPE_FOR, "mv_type"), |
| CONST("bp", "backward predicted MVs", MV_TYPE_BACK, "mv_type"), |
| { "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" }, |
| { "ft", "set frame types to visualize motion vectors of", OFFSET(frame_type), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "frame_type" }, |
| CONST("if", "I-frames", FRAME_TYPE_I, "frame_type"), |
| CONST("pf", "P-frames", FRAME_TYPE_P, "frame_type"), |
| CONST("bf", "B-frames", FRAME_TYPE_B, "frame_type"), |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(codecview); |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| // TODO: we can probably add way more pixel formats without any other |
| // changes; anything with 8-bit luma in first plane should be working |
| static const enum AVPixelFormat pix_fmts[] = {AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE}; |
| AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); |
| if (!fmts_list) |
| return AVERROR(ENOMEM); |
| return ff_set_common_formats(ctx, fmts_list); |
| } |
| |
| static int clip_line(int *sx, int *sy, int *ex, int *ey, int maxx) |
| { |
| if(*sx > *ex) |
| return clip_line(ex, ey, sx, sy, maxx); |
| |
| if (*sx < 0) { |
| if (*ex < 0) |
| return 1; |
| *sy = *ey + (*sy - *ey) * (int64_t)*ex / (*ex - *sx); |
| *sx = 0; |
| } |
| |
| if (*ex > maxx) { |
| if (*sx > maxx) |
| return 1; |
| *ey = *sy + (*ey - *sy) * (int64_t)(maxx - *sx) / (*ex - *sx); |
| *ex = maxx; |
| } |
| return 0; |
| } |
| |
| /** |
| * Draw a line from (ex, ey) -> (sx, sy). |
| * @param w width of the image |
| * @param h height of the image |
| * @param stride stride/linesize of the image |
| * @param color color of the arrow |
| */ |
| static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, |
| int w, int h, int stride, int color) |
| { |
| int x, y, fr, f; |
| |
| if (clip_line(&sx, &sy, &ex, &ey, w - 1)) |
| return; |
| if (clip_line(&sy, &sx, &ey, &ex, h - 1)) |
| return; |
| |
| sx = av_clip(sx, 0, w - 1); |
| sy = av_clip(sy, 0, h - 1); |
| ex = av_clip(ex, 0, w - 1); |
| ey = av_clip(ey, 0, h - 1); |
| |
| buf[sy * stride + sx] += color; |
| |
| if (FFABS(ex - sx) > FFABS(ey - sy)) { |
| if (sx > ex) { |
| FFSWAP(int, sx, ex); |
| FFSWAP(int, sy, ey); |
| } |
| buf += sx + sy * stride; |
| ex -= sx; |
| f = ((ey - sy) << 16) / ex; |
| for (x = 0; x <= ex; x++) { |
| y = (x * f) >> 16; |
| fr = (x * f) & 0xFFFF; |
| buf[ y * stride + x] += (color * (0x10000 - fr)) >> 16; |
| if(fr) buf[(y + 1) * stride + x] += (color * fr ) >> 16; |
| } |
| } else { |
| if (sy > ey) { |
| FFSWAP(int, sx, ex); |
| FFSWAP(int, sy, ey); |
| } |
| buf += sx + sy * stride; |
| ey -= sy; |
| if (ey) |
| f = ((ex - sx) << 16) / ey; |
| else |
| f = 0; |
| for(y= 0; y <= ey; y++){ |
| x = (y*f) >> 16; |
| fr = (y*f) & 0xFFFF; |
| buf[y * stride + x ] += (color * (0x10000 - fr)) >> 16; |
| if(fr) buf[y * stride + x + 1] += (color * fr ) >> 16; |
| } |
| } |
| } |
| |
| /** |
| * Draw an arrow from (ex, ey) -> (sx, sy). |
| * @param w width of the image |
| * @param h height of the image |
| * @param stride stride/linesize of the image |
| * @param color color of the arrow |
| */ |
| static void draw_arrow(uint8_t *buf, int sx, int sy, int ex, |
| int ey, int w, int h, int stride, int color, int tail, int direction) |
| { |
| int dx,dy; |
| |
| if (direction) { |
| FFSWAP(int, sx, ex); |
| FFSWAP(int, sy, ey); |
| } |
| |
| sx = av_clip(sx, -100, w + 100); |
| sy = av_clip(sy, -100, h + 100); |
| ex = av_clip(ex, -100, w + 100); |
| ey = av_clip(ey, -100, h + 100); |
| |
| dx = ex - sx; |
| dy = ey - sy; |
| |
| if (dx * dx + dy * dy > 3 * 3) { |
| int rx = dx + dy; |
| int ry = -dx + dy; |
| int length = sqrt((rx * rx + ry * ry) << 8); |
| |
| // FIXME subpixel accuracy |
| rx = ROUNDED_DIV(rx * 3 << 4, length); |
| ry = ROUNDED_DIV(ry * 3 << 4, length); |
| |
| if (tail) { |
| rx = -rx; |
| ry = -ry; |
| } |
| |
| draw_line(buf, sx, sy, sx + rx, sy + ry, w, h, stride, color); |
| draw_line(buf, sx, sy, sx - ry, sy + rx, w, h, stride, color); |
| } |
| draw_line(buf, sx, sy, ex, ey, w, h, stride, color); |
| } |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *frame) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| CodecViewContext *s = ctx->priv; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| |
| if (s->qp) { |
| int qstride, qp_type, ret; |
| int8_t *qp_table; |
| |
| ret = ff_qp_table_extract(frame, &qp_table, &qstride, NULL, &qp_type); |
| if (ret < 0) { |
| av_frame_free(&frame); |
| return ret; |
| } |
| |
| if (qp_table) { |
| int x, y; |
| const int w = AV_CEIL_RSHIFT(frame->width, s->hsub); |
| const int h = AV_CEIL_RSHIFT(frame->height, s->vsub); |
| uint8_t *pu = frame->data[1]; |
| uint8_t *pv = frame->data[2]; |
| const int lzu = frame->linesize[1]; |
| const int lzv = frame->linesize[2]; |
| |
| for (y = 0; y < h; y++) { |
| for (x = 0; x < w; x++) { |
| const int qp = ff_norm_qscale(qp_table[(y >> 3) * qstride + (x >> 3)], qp_type) * 128/31; |
| pu[x] = pv[x] = qp; |
| } |
| pu += lzu; |
| pv += lzv; |
| } |
| } |
| av_freep(&qp_table); |
| } |
| |
| if (s->mv || s->mv_type) { |
| AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_MOTION_VECTORS); |
| if (sd) { |
| int i; |
| const AVMotionVector *mvs = (const AVMotionVector *)sd->data; |
| const int is_iframe = (s->frame_type & FRAME_TYPE_I) && frame->pict_type == AV_PICTURE_TYPE_I; |
| const int is_pframe = (s->frame_type & FRAME_TYPE_P) && frame->pict_type == AV_PICTURE_TYPE_P; |
| const int is_bframe = (s->frame_type & FRAME_TYPE_B) && frame->pict_type == AV_PICTURE_TYPE_B; |
| |
| for (i = 0; i < sd->size / sizeof(*mvs); i++) { |
| const AVMotionVector *mv = &mvs[i]; |
| const int direction = mv->source > 0; |
| |
| if (s->mv_type) { |
| const int is_fp = direction == 0 && (s->mv_type & MV_TYPE_FOR); |
| const int is_bp = direction == 1 && (s->mv_type & MV_TYPE_BACK); |
| |
| if ((!s->frame_type && (is_fp || is_bp)) || |
| is_iframe && is_fp || is_iframe && is_bp || |
| is_pframe && is_fp || |
| is_bframe && is_fp || is_bframe && is_bp) |
| draw_arrow(frame->data[0], mv->dst_x, mv->dst_y, mv->src_x, mv->src_y, |
| frame->width, frame->height, frame->linesize[0], |
| 100, 0, direction); |
| } else if (s->mv) |
| if ((direction == 0 && (s->mv & MV_P_FOR) && frame->pict_type == AV_PICTURE_TYPE_P) || |
| (direction == 0 && (s->mv & MV_B_FOR) && frame->pict_type == AV_PICTURE_TYPE_B) || |
| (direction == 1 && (s->mv & MV_B_BACK) && frame->pict_type == AV_PICTURE_TYPE_B)) |
| draw_arrow(frame->data[0], mv->dst_x, mv->dst_y, mv->src_x, mv->src_y, |
| frame->width, frame->height, frame->linesize[0], |
| 100, 0, direction); |
| } |
| } |
| } |
| |
| return ff_filter_frame(outlink, frame); |
| } |
| |
| static int config_input(AVFilterLink *inlink) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| CodecViewContext *s = ctx->priv; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| |
| s->hsub = desc->log2_chroma_w; |
| s->vsub = desc->log2_chroma_h; |
| return 0; |
| } |
| |
| static const AVFilterPad codecview_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = filter_frame, |
| .config_props = config_input, |
| .needs_writable = 1, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad codecview_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_codecview = { |
| .name = "codecview", |
| .description = NULL_IF_CONFIG_SMALL("Visualize information about some codecs."), |
| .priv_size = sizeof(CodecViewContext), |
| .query_formats = query_formats, |
| .inputs = codecview_inputs, |
| .outputs = codecview_outputs, |
| .priv_class = &codecview_class, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, |
| }; |
