| /* |
| * Copyright (c) 2015 Paul B. Mahol |
| * |
| * 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 |
| */ |
| |
| #include "libavutil/avstring.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/parseutils.h" |
| #include "libavutil/pixdesc.h" |
| |
| #include "avfilter.h" |
| #include "drawutils.h" |
| #include "formats.h" |
| #include "internal.h" |
| #include "framesync.h" |
| #include "video.h" |
| |
| typedef struct StackItem { |
| int x[4], y[4]; |
| int linesize[4]; |
| int height[4]; |
| } StackItem; |
| |
| typedef struct StackContext { |
| const AVClass *class; |
| const AVPixFmtDescriptor *desc; |
| int nb_inputs; |
| char *layout; |
| int shortest; |
| int is_vertical; |
| int is_horizontal; |
| int nb_planes; |
| uint8_t fillcolor[4]; |
| char *fillcolor_str; |
| int fillcolor_enable; |
| |
| FFDrawContext draw; |
| FFDrawColor color; |
| |
| StackItem *items; |
| AVFrame **frames; |
| FFFrameSync fs; |
| } StackContext; |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| AVFilterFormats *pix_fmts = NULL; |
| StackContext *s = ctx->priv; |
| int fmt, ret; |
| |
| if (s->fillcolor_enable) { |
| return ff_set_common_formats(ctx, ff_draw_supported_pixel_formats(0)); |
| } |
| |
| for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt); |
| if (!(desc->flags & AV_PIX_FMT_FLAG_PAL || |
| desc->flags & AV_PIX_FMT_FLAG_HWACCEL || |
| desc->flags & AV_PIX_FMT_FLAG_BITSTREAM) && |
| (ret = ff_add_format(&pix_fmts, fmt)) < 0) |
| return ret; |
| } |
| |
| return ff_set_common_formats(ctx, pix_fmts); |
| } |
| |
| static av_cold int init(AVFilterContext *ctx) |
| { |
| StackContext *s = ctx->priv; |
| int i, ret; |
| |
| if (!strcmp(ctx->filter->name, "vstack")) |
| s->is_vertical = 1; |
| |
| if (!strcmp(ctx->filter->name, "hstack")) |
| s->is_horizontal = 1; |
| |
| s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames)); |
| if (!s->frames) |
| return AVERROR(ENOMEM); |
| |
| s->items = av_calloc(s->nb_inputs, sizeof(*s->items)); |
| if (!s->items) |
| return AVERROR(ENOMEM); |
| |
| if (!strcmp(ctx->filter->name, "xstack")) { |
| if (strcmp(s->fillcolor_str, "none") && |
| av_parse_color(s->fillcolor, s->fillcolor_str, -1, ctx) >= 0) { |
| s->fillcolor_enable = 1; |
| } else { |
| s->fillcolor_enable = 0; |
| } |
| if (!s->layout) { |
| if (s->nb_inputs == 2) { |
| s->layout = av_strdup("0_0|w0_0"); |
| if (!s->layout) |
| return AVERROR(ENOMEM); |
| } else { |
| av_log(ctx, AV_LOG_ERROR, "No layout specified.\n"); |
| return AVERROR(EINVAL); |
| } |
| } |
| } |
| |
| for (i = 0; i < s->nb_inputs; i++) { |
| AVFilterPad pad = { 0 }; |
| |
| pad.type = AVMEDIA_TYPE_VIDEO; |
| pad.name = av_asprintf("input%d", i); |
| if (!pad.name) |
| return AVERROR(ENOMEM); |
| |
| if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) { |
| av_freep(&pad.name); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int process_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs) |
| { |
| StackContext *s = ctx->priv; |
| AVFrame *out = arg; |
| AVFrame **in = s->frames; |
| const int start = (s->nb_inputs * job ) / nb_jobs; |
| const int end = (s->nb_inputs * (job+1)) / nb_jobs; |
| |
| for (int i = start; i < end; i++) { |
| StackItem *item = &s->items[i]; |
| |
| for (int p = 0; p < s->nb_planes; p++) { |
| av_image_copy_plane(out->data[p] + out->linesize[p] * item->y[p] + item->x[p], |
| out->linesize[p], |
| in[i]->data[p], |
| in[i]->linesize[p], |
| item->linesize[p], item->height[p]); |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int process_frame(FFFrameSync *fs) |
| { |
| AVFilterContext *ctx = fs->parent; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| StackContext *s = fs->opaque; |
| AVFrame **in = s->frames; |
| AVFrame *out; |
| int i, ret; |
| |
| for (i = 0; i < s->nb_inputs; i++) { |
| if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0) |
| return ret; |
| } |
| |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) |
| return AVERROR(ENOMEM); |
| out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base); |
| out->sample_aspect_ratio = outlink->sample_aspect_ratio; |
| |
| if (s->fillcolor_enable) |
| ff_fill_rectangle(&s->draw, &s->color, out->data, out->linesize, |
| 0, 0, outlink->w, outlink->h); |
| |
| ctx->internal->execute(ctx, process_slice, out, NULL, FFMIN(s->nb_inputs, ff_filter_get_nb_threads(ctx))); |
| |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| StackContext *s = ctx->priv; |
| AVRational frame_rate = ctx->inputs[0]->frame_rate; |
| AVRational sar = ctx->inputs[0]->sample_aspect_ratio; |
| int height = ctx->inputs[0]->h; |
| int width = ctx->inputs[0]->w; |
| FFFrameSyncIn *in; |
| int i, ret; |
| |
| s->desc = av_pix_fmt_desc_get(outlink->format); |
| if (!s->desc) |
| return AVERROR_BUG; |
| |
| if (s->is_vertical) { |
| for (i = 0; i < s->nb_inputs; i++) { |
| AVFilterLink *inlink = ctx->inputs[i]; |
| StackItem *item = &s->items[i]; |
| |
| if (ctx->inputs[i]->w != width) { |
| av_log(ctx, AV_LOG_ERROR, "Input %d width %d does not match input %d width %d.\n", i, ctx->inputs[i]->w, 0, width); |
| return AVERROR(EINVAL); |
| } |
| |
| if ((ret = av_image_fill_linesizes(item->linesize, inlink->format, inlink->w)) < 0) { |
| return ret; |
| } |
| |
| item->height[1] = item->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h); |
| item->height[0] = item->height[3] = inlink->h; |
| |
| if (i) { |
| item->y[1] = item->y[2] = AV_CEIL_RSHIFT(height, s->desc->log2_chroma_h); |
| item->y[0] = item->y[3] = height; |
| |
| height += ctx->inputs[i]->h; |
| } |
| } |
| } else if (s->is_horizontal) { |
| for (i = 0; i < s->nb_inputs; i++) { |
| AVFilterLink *inlink = ctx->inputs[i]; |
| StackItem *item = &s->items[i]; |
| |
| if (ctx->inputs[i]->h != height) { |
| av_log(ctx, AV_LOG_ERROR, "Input %d height %d does not match input %d height %d.\n", i, ctx->inputs[i]->h, 0, height); |
| return AVERROR(EINVAL); |
| } |
| |
| if ((ret = av_image_fill_linesizes(item->linesize, inlink->format, inlink->w)) < 0) { |
| return ret; |
| } |
| |
| item->height[1] = item->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h); |
| item->height[0] = item->height[3] = inlink->h; |
| |
| if (i) { |
| if ((ret = av_image_fill_linesizes(item->x, inlink->format, width)) < 0) { |
| return ret; |
| } |
| |
| width += ctx->inputs[i]->w; |
| } |
| } |
| } else { |
| char *arg, *p = s->layout, *saveptr = NULL; |
| char *arg2, *p2, *saveptr2 = NULL; |
| char *arg3, *p3, *saveptr3 = NULL; |
| int inw, inh, size; |
| |
| if (s->fillcolor_enable) { |
| ff_draw_init(&s->draw, ctx->inputs[0]->format, 0); |
| ff_draw_color(&s->draw, &s->color, s->fillcolor); |
| } |
| |
| for (i = 0; i < s->nb_inputs; i++) { |
| AVFilterLink *inlink = ctx->inputs[i]; |
| StackItem *item = &s->items[i]; |
| |
| if (!(arg = av_strtok(p, "|", &saveptr))) |
| return AVERROR(EINVAL); |
| |
| p = NULL; |
| |
| if ((ret = av_image_fill_linesizes(item->linesize, inlink->format, inlink->w)) < 0) { |
| return ret; |
| } |
| |
| item->height[1] = item->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h); |
| item->height[0] = item->height[3] = inlink->h; |
| |
| p2 = arg; |
| inw = inh = 0; |
| |
| for (int j = 0; j < 2; j++) { |
| if (!(arg2 = av_strtok(p2, "_", &saveptr2))) |
| return AVERROR(EINVAL); |
| |
| p2 = NULL; |
| p3 = arg2; |
| while ((arg3 = av_strtok(p3, "+", &saveptr3))) { |
| p3 = NULL; |
| if (sscanf(arg3, "w%d", &size) == 1) { |
| if (size == i || size < 0 || size >= s->nb_inputs) |
| return AVERROR(EINVAL); |
| |
| if (!j) |
| inw += ctx->inputs[size]->w; |
| else |
| inh += ctx->inputs[size]->w; |
| } else if (sscanf(arg3, "h%d", &size) == 1) { |
| if (size == i || size < 0 || size >= s->nb_inputs) |
| return AVERROR(EINVAL); |
| |
| if (!j) |
| inw += ctx->inputs[size]->h; |
| else |
| inh += ctx->inputs[size]->h; |
| } else if (sscanf(arg3, "%d", &size) == 1) { |
| if (size < 0) |
| return AVERROR(EINVAL); |
| |
| if (!j) |
| inw += size; |
| else |
| inh += size; |
| } else { |
| return AVERROR(EINVAL); |
| } |
| } |
| } |
| |
| if ((ret = av_image_fill_linesizes(item->x, inlink->format, inw)) < 0) { |
| return ret; |
| } |
| |
| item->y[1] = item->y[2] = AV_CEIL_RSHIFT(inh, s->desc->log2_chroma_h); |
| item->y[0] = item->y[3] = inh; |
| |
| width = FFMAX(width, inlink->w + inw); |
| height = FFMAX(height, inlink->h + inh); |
| } |
| } |
| |
| s->nb_planes = av_pix_fmt_count_planes(outlink->format); |
| |
| outlink->w = width; |
| outlink->h = height; |
| outlink->frame_rate = frame_rate; |
| outlink->sample_aspect_ratio = sar; |
| |
| for (i = 1; i < s->nb_inputs; i++) { |
| AVFilterLink *inlink = ctx->inputs[i]; |
| if (outlink->frame_rate.num != inlink->frame_rate.num || |
| outlink->frame_rate.den != inlink->frame_rate.den) { |
| av_log(ctx, AV_LOG_VERBOSE, |
| "Video inputs have different frame rates, output will be VFR\n"); |
| outlink->frame_rate = av_make_q(1, 0); |
| break; |
| } |
| } |
| |
| if ((ret = ff_framesync_init(&s->fs, ctx, s->nb_inputs)) < 0) |
| return ret; |
| |
| in = s->fs.in; |
| s->fs.opaque = s; |
| s->fs.on_event = process_frame; |
| |
| for (i = 0; i < s->nb_inputs; i++) { |
| AVFilterLink *inlink = ctx->inputs[i]; |
| |
| in[i].time_base = inlink->time_base; |
| in[i].sync = 1; |
| in[i].before = EXT_STOP; |
| in[i].after = s->shortest ? EXT_STOP : EXT_INFINITY; |
| } |
| |
| ret = ff_framesync_configure(&s->fs); |
| outlink->time_base = s->fs.time_base; |
| |
| return ret; |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| StackContext *s = ctx->priv; |
| int i; |
| |
| ff_framesync_uninit(&s->fs); |
| av_freep(&s->frames); |
| av_freep(&s->items); |
| |
| for (i = 0; i < ctx->nb_inputs; i++) |
| av_freep(&ctx->input_pads[i].name); |
| } |
| |
| static int activate(AVFilterContext *ctx) |
| { |
| StackContext *s = ctx->priv; |
| return ff_framesync_activate(&s->fs); |
| } |
| |
| #define OFFSET(x) offsetof(StackContext, x) |
| #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
| static const AVOption stack_options[] = { |
| { "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=2}, 2, INT_MAX, .flags = FLAGS }, |
| { "shortest", "force termination when the shortest input terminates", OFFSET(shortest), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, .flags = FLAGS }, |
| { NULL }, |
| }; |
| |
| static const AVFilterPad outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| #if CONFIG_HSTACK_FILTER |
| |
| #define hstack_options stack_options |
| AVFILTER_DEFINE_CLASS(hstack); |
| |
| AVFilter ff_vf_hstack = { |
| .name = "hstack", |
| .description = NULL_IF_CONFIG_SMALL("Stack video inputs horizontally."), |
| .priv_size = sizeof(StackContext), |
| .priv_class = &hstack_class, |
| .query_formats = query_formats, |
| .outputs = outputs, |
| .init = init, |
| .uninit = uninit, |
| .activate = activate, |
| .flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS, |
| }; |
| |
| #endif /* CONFIG_HSTACK_FILTER */ |
| |
| #if CONFIG_VSTACK_FILTER |
| |
| #define vstack_options stack_options |
| AVFILTER_DEFINE_CLASS(vstack); |
| |
| AVFilter ff_vf_vstack = { |
| .name = "vstack", |
| .description = NULL_IF_CONFIG_SMALL("Stack video inputs vertically."), |
| .priv_size = sizeof(StackContext), |
| .priv_class = &vstack_class, |
| .query_formats = query_formats, |
| .outputs = outputs, |
| .init = init, |
| .uninit = uninit, |
| .activate = activate, |
| .flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS, |
| }; |
| |
| #endif /* CONFIG_VSTACK_FILTER */ |
| |
| #if CONFIG_XSTACK_FILTER |
| |
| static const AVOption xstack_options[] = { |
| { "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=2}, 2, INT_MAX, .flags = FLAGS }, |
| { "layout", "set custom layout", OFFSET(layout), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, .flags = FLAGS }, |
| { "shortest", "force termination when the shortest input terminates", OFFSET(shortest), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, .flags = FLAGS }, |
| { "fill", "set the color for unused pixels", OFFSET(fillcolor_str), AV_OPT_TYPE_STRING, {.str = "none"}, .flags = FLAGS }, |
| { NULL }, |
| }; |
| |
| AVFILTER_DEFINE_CLASS(xstack); |
| |
| AVFilter ff_vf_xstack = { |
| .name = "xstack", |
| .description = NULL_IF_CONFIG_SMALL("Stack video inputs into custom layout."), |
| .priv_size = sizeof(StackContext), |
| .priv_class = &xstack_class, |
| .query_formats = query_formats, |
| .outputs = outputs, |
| .init = init, |
| .uninit = uninit, |
| .activate = activate, |
| .flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS, |
| }; |
| |
| #endif /* CONFIG_XSTACK_FILTER */ |
