diff options
Diffstat (limited to 'libavfilter/vf_mergeplanes.c')
| -rw-r--r-- | libavfilter/vf_mergeplanes.c | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/libavfilter/vf_mergeplanes.c b/libavfilter/vf_mergeplanes.c new file mode 100644 index 0000000000..c76e82a419 --- /dev/null +++ b/libavfilter/vf_mergeplanes.c @@ -0,0 +1,313 @@ +/* + * Copyright (c) 2013 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/avassert.h" +#include "libavutil/avstring.h" +#include "libavutil/imgutils.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" +#include "avfilter.h" +#include "internal.h" +#include "framesync.h" + +typedef struct InputParam { + int depth[4]; + int nb_planes; + int planewidth[4]; + int planeheight[4]; +} InputParam; + +typedef struct MergePlanesContext { + const AVClass *class; + int64_t mapping; + const enum AVPixelFormat out_fmt; + int nb_inputs; + int nb_planes; + int planewidth[4]; + int planeheight[4]; + int map[4][2]; + const AVPixFmtDescriptor *outdesc; + + FFFrameSync fs; + FFFrameSyncIn fsin[3]; /* must be immediately after fs */ +} MergePlanesContext; + +#define OFFSET(x) offsetof(MergePlanesContext, x) +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM +static const AVOption mergeplanes_options[] = { + { "mapping", "set input to output plane mapping", OFFSET(mapping), AV_OPT_TYPE_INT, {.i64=0}, 0, 0x33333333, FLAGS }, + { "format", "set output pixel format", OFFSET(out_fmt), AV_OPT_TYPE_PIXEL_FMT, {.i64=AV_PIX_FMT_YUVA444P}, 0, INT_MAX, .flags=FLAGS }, + { NULL } +}; + +AVFILTER_DEFINE_CLASS(mergeplanes); + +static int filter_frame(AVFilterLink *inlink, AVFrame *in) +{ + MergePlanesContext *s = inlink->dst->priv; + return ff_framesync_filter_frame(&s->fs, inlink, in); +} + +static av_cold int init(AVFilterContext *ctx) +{ + MergePlanesContext *s = ctx->priv; + int64_t m = s->mapping; + int i, ret; + + s->outdesc = av_pix_fmt_desc_get(s->out_fmt); + if (!(s->outdesc->flags & AV_PIX_FMT_FLAG_PLANAR) || + s->outdesc->nb_components < 2) { + av_log(ctx, AV_LOG_ERROR, "Only planar formats with more than one component are supported.\n"); + return AVERROR(EINVAL); + } + s->nb_planes = av_pix_fmt_count_planes(s->out_fmt); + + for (i = s->nb_planes - 1; i >= 0; i--) { + s->map[i][0] = m & 0xf; + m >>= 4; + s->map[i][1] = m & 0xf; + m >>= 4; + + if (s->map[i][0] > 3 || s->map[i][1] > 3) { + av_log(ctx, AV_LOG_ERROR, "Mapping with out of range input and/or plane number.\n"); + return AVERROR(EINVAL); + } + + s->nb_inputs = FFMAX(s->nb_inputs, s->map[i][1] + 1); + } + + av_assert0(s->nb_inputs && s->nb_inputs <= 4); + + for (i = 0; i < s->nb_inputs; i++) { + AVFilterPad pad = { 0 }; + + pad.type = AVMEDIA_TYPE_VIDEO; + pad.name = av_asprintf("in%d", i); + if (!pad.name) + return AVERROR(ENOMEM); + pad.filter_frame = filter_frame; + + if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0){ + av_freep(&pad.name); + return ret; + } + } + + return 0; +} + +static int query_formats(AVFilterContext *ctx) +{ + MergePlanesContext *s = ctx->priv; + AVFilterFormats *formats = NULL; + int i; + + s->outdesc = av_pix_fmt_desc_get(s->out_fmt); + for (i = 0; av_pix_fmt_desc_get(i); i++) { + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i); + if (desc->comp[0].depth_minus1 == s->outdesc->comp[0].depth_minus1 && + av_pix_fmt_count_planes(i) == desc->nb_components) + ff_add_format(&formats, i); + } + + for (i = 0; i < s->nb_inputs; i++) + ff_formats_ref(formats, &ctx->inputs[i]->out_formats); + + formats = NULL; + ff_add_format(&formats, s->out_fmt); + ff_formats_ref(formats, &ctx->outputs[0]->in_formats); + + return 0; +} + +static int process_frame(FFFrameSync *fs) +{ + AVFilterContext *ctx = fs->parent; + AVFilterLink *outlink = ctx->outputs[0]; + MergePlanesContext *s = fs->opaque; + AVFrame *in[4] = { NULL }; + 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); + + for (i = 0; i < s->nb_planes; i++) { + const int input = s->map[i][1]; + const int plane = s->map[i][0]; + + av_image_copy_plane(out->data[i], out->linesize[i], + in[input]->data[plane], in[input]->linesize[plane], + s->planewidth[i], s->planeheight[i]); + } + + return ff_filter_frame(outlink, out); +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + MergePlanesContext *s = ctx->priv; + InputParam inputsp[4]; + FFFrameSyncIn *in; + int i; + + ff_framesync_init(&s->fs, ctx, s->nb_inputs); + in = s->fs.in; + s->fs.opaque = s; + s->fs.on_event = process_frame; + + outlink->w = ctx->inputs[0]->w; + outlink->h = ctx->inputs[0]->h; + outlink->time_base = ctx->inputs[0]->time_base; + outlink->frame_rate = ctx->inputs[0]->frame_rate; + outlink->sample_aspect_ratio = ctx->inputs[0]->sample_aspect_ratio; + + s->planewidth[1] = + s->planewidth[2] = FF_CEIL_RSHIFT(outlink->w, s->outdesc->log2_chroma_w); + s->planewidth[0] = + s->planewidth[3] = outlink->w; + s->planeheight[1] = + s->planeheight[2] = FF_CEIL_RSHIFT(outlink->h, s->outdesc->log2_chroma_h); + s->planeheight[0] = + s->planeheight[3] = outlink->h; + + for (i = 0; i < s->nb_inputs; i++) { + InputParam *inputp = &inputsp[i]; + AVFilterLink *inlink = ctx->inputs[i]; + const AVPixFmtDescriptor *indesc = av_pix_fmt_desc_get(inlink->format); + int j; + + if (outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num || + outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) { + av_log(ctx, AV_LOG_ERROR, "input #%d link %s SAR %d:%d " + "does not match output link %s SAR %d:%d\n", + i, ctx->input_pads[i].name, + inlink->sample_aspect_ratio.num, + inlink->sample_aspect_ratio.den, + ctx->output_pads[0].name, + outlink->sample_aspect_ratio.num, + outlink->sample_aspect_ratio.den); + return AVERROR(EINVAL); + } + + inputp->planewidth[1] = + inputp->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, indesc->log2_chroma_w); + inputp->planewidth[0] = + inputp->planewidth[3] = inlink->w; + inputp->planeheight[1] = + inputp->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, indesc->log2_chroma_h); + inputp->planeheight[0] = + inputp->planeheight[3] = inlink->h; + inputp->nb_planes = av_pix_fmt_count_planes(inlink->format); + + for (j = 0; j < inputp->nb_planes; j++) + inputp->depth[j] = indesc->comp[j].depth_minus1 + 1; + + in[i].time_base = inlink->time_base; + in[i].sync = 1; + in[i].before = EXT_STOP; + in[i].after = EXT_STOP; + } + + for (i = 0; i < s->nb_planes; i++) { + const int input = s->map[i][1]; + const int plane = s->map[i][0]; + InputParam *inputp = &inputsp[input]; + + if (plane + 1 > inputp->nb_planes) { + av_log(ctx, AV_LOG_ERROR, "input %d does not have %d plane\n", + input, plane); + goto fail; + } + if (s->outdesc->comp[i].depth_minus1 + 1 != inputp->depth[plane]) { + av_log(ctx, AV_LOG_ERROR, "output plane %d depth %d does not " + "match input %d plane %d depth %d\n", + i, s->outdesc->comp[i].depth_minus1 + 1, + input, plane, inputp->depth[plane]); + goto fail; + } + if (s->planewidth[i] != inputp->planewidth[plane]) { + av_log(ctx, AV_LOG_ERROR, "output plane %d width %d does not " + "match input %d plane %d width %d\n", + i, s->planewidth[i], + input, plane, inputp->planewidth[plane]); + goto fail; + } + if (s->planeheight[i] != inputp->planeheight[plane]) { + av_log(ctx, AV_LOG_ERROR, "output plane %d height %d does not " + "match input %d plane %d height %d\n", + i, s->planeheight[i], + input, plane, inputp->planeheight[plane]); + goto fail; + } + } + + return ff_framesync_configure(&s->fs); +fail: + return AVERROR(EINVAL); +} + +static int request_frame(AVFilterLink *outlink) +{ + MergePlanesContext *s = outlink->src->priv; + return ff_framesync_request_frame(&s->fs, outlink); +} + +static av_cold void uninit(AVFilterContext *ctx) +{ + MergePlanesContext *s = ctx->priv; + int i; + + ff_framesync_uninit(&s->fs); + + for (i = 0; i < ctx->nb_inputs; i++) + av_freep(&ctx->input_pads[i].name); +} + +static const AVFilterPad mergeplanes_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, + .request_frame = request_frame, + }, + { NULL } +}; + +AVFilter ff_vf_mergeplanes = { + .name = "mergeplanes", + .description = NULL_IF_CONFIG_SMALL("Merge planes."), + .priv_size = sizeof(MergePlanesContext), + .priv_class = &mergeplanes_class, + .init = init, + .uninit = uninit, + .query_formats = query_formats, + .inputs = NULL, + .outputs = mergeplanes_outputs, + .flags = AVFILTER_FLAG_DYNAMIC_INPUTS, +}; |