| /* |
| * 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/colorspace.h" |
| #include "libavutil/eval.h" |
| #include "libavutil/opt.h" |
| |
| #include "avfilter.h" |
| #include "internal.h" |
| #include "vaapi_vpp.h" |
| #include "video.h" |
| |
| static const char *const var_names[] = { |
| "in_w", "iw", |
| "in_h", "ih", |
| "out_w", "ow", |
| "out_h", "oh", |
| "x", |
| "y", |
| "a", |
| "sar", |
| "dar", |
| NULL |
| }; |
| |
| enum var_name { |
| VAR_IN_W, VAR_IW, |
| VAR_IN_H, VAR_IH, |
| VAR_OUT_W, VAR_OW, |
| VAR_OUT_H, VAR_OH, |
| VAR_X, |
| VAR_Y, |
| VAR_A, |
| VAR_SAR, |
| VAR_DAR, |
| VARS_NB |
| }; |
| |
| typedef struct PadVAAPIContext { |
| VAAPIVPPContext vpp_ctx; // must be the first field |
| VARectangle rect; |
| |
| char *w_expr; |
| char *h_expr; |
| char *x_expr; |
| char *y_expr; |
| AVRational aspect; |
| |
| int w, h; |
| int x, y; |
| uint8_t pad_rgba[4]; |
| } PadVAAPIContext; |
| |
| static int pad_vaapi_config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *avctx = outlink->src; |
| AVFilterLink *inlink = avctx->inputs[0]; |
| PadVAAPIContext *ctx = avctx->priv; |
| VAAPIVPPContext *vpp_ctx = avctx->priv; |
| AVRational adjusted_aspect = ctx->aspect; |
| double var_values[VARS_NB], res; |
| int err, ret; |
| char *expr; |
| |
| var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w; |
| var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h; |
| var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN; |
| var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN; |
| var_values[VAR_A] = (double) inlink->w / inlink->h; |
| var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ? |
| (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1; |
| var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR]; |
| |
| av_expr_parse_and_eval(&res, (expr = ctx->w_expr), |
| var_names, var_values, |
| NULL, NULL, NULL, NULL, NULL, 0, ctx); |
| ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res; |
| if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->h_expr), |
| var_names, var_values, |
| NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0) |
| return ret; |
| ctx->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res; |
| if (!ctx->h) |
| var_values[VAR_OUT_H] = var_values[VAR_OH] = ctx->h = inlink->h; |
| |
| /* evaluate the width again, as it may depend on the evaluated output height */ |
| if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->w_expr), |
| var_names, var_values, |
| NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0) |
| return ret; |
| ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res; |
| if (!ctx->w) |
| var_values[VAR_OUT_W] = var_values[VAR_OW] = ctx->w = inlink->w; |
| |
| if (adjusted_aspect.num && adjusted_aspect.den) { |
| adjusted_aspect = av_div_q(adjusted_aspect, inlink->sample_aspect_ratio); |
| if (ctx->h < av_rescale(ctx->w, adjusted_aspect.den, adjusted_aspect.num)) { |
| ctx->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = av_rescale(ctx->w, adjusted_aspect.den, adjusted_aspect.num); |
| } else { |
| ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = av_rescale(ctx->h, adjusted_aspect.num, adjusted_aspect.den); |
| } |
| } |
| |
| /* evaluate x and y */ |
| av_expr_parse_and_eval(&res, (expr = ctx->x_expr), |
| var_names, var_values, |
| NULL, NULL, NULL, NULL, NULL, 0, ctx); |
| ctx->x = var_values[VAR_X] = res; |
| if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->y_expr), |
| var_names, var_values, |
| NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0) |
| return ret; |
| ctx->y = var_values[VAR_Y] = res; |
| /* evaluate x again, as it may depend on the evaluated y value */ |
| if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->x_expr), |
| var_names, var_values, |
| NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0) |
| return ret; |
| ctx->x = var_values[VAR_X] = res; |
| |
| if (ctx->x < 0 || ctx->x + inlink->w > ctx->w) |
| ctx->x = var_values[VAR_X] = (ctx->w - inlink->w) / 2; |
| if (ctx->y < 0 || ctx->y + inlink->h > ctx->h) |
| ctx->y = var_values[VAR_Y] = (ctx->h - inlink->h) / 2; |
| |
| /* sanity check params */ |
| if (ctx->w < inlink->w || ctx->h < inlink->h) { |
| av_log(ctx, AV_LOG_ERROR, "Padded dimensions cannot be smaller than input dimensions.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| if (ctx->w > avctx->inputs[0]->w) { |
| vpp_ctx->output_width = ctx->w; |
| } else { |
| vpp_ctx->output_width = avctx->inputs[0]->w; |
| } |
| |
| if (ctx->h > avctx->inputs[0]->h) { |
| vpp_ctx->output_height = ctx->h; |
| } else { |
| vpp_ctx->output_height = avctx->inputs[0]->h; |
| } |
| |
| if (ctx->x + avctx->inputs[0]->w > vpp_ctx->output_width || |
| ctx->y + avctx->inputs[0]->h > vpp_ctx->output_height) { |
| return AVERROR(EINVAL); |
| } |
| |
| err = ff_vaapi_vpp_config_output(outlink); |
| if (err < 0) |
| return err; |
| |
| return 0; |
| } |
| |
| static int pad_vaapi_filter_frame(AVFilterLink *link, AVFrame *input_frame) |
| { |
| AVFilterContext *avctx = link->dst; |
| AVFilterLink *outlink = avctx->outputs[0]; |
| VAAPIVPPContext *vpp_ctx = avctx->priv; |
| PadVAAPIContext *pad_ctx = avctx->priv; |
| AVFrame *output_frame = NULL; |
| VAProcPipelineParameterBuffer params; |
| int err; |
| |
| if (!input_frame->hw_frames_ctx || |
| vpp_ctx->va_context == VA_INVALID_ID) { |
| err = AVERROR(EINVAL); |
| goto fail; |
| } |
| |
| output_frame = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!output_frame) { |
| err = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| err = av_frame_copy_props(output_frame, input_frame); |
| if (err < 0) |
| goto fail; |
| |
| err = ff_vaapi_vpp_init_params(avctx, ¶ms, |
| input_frame, output_frame); |
| if (err < 0) |
| goto fail; |
| |
| pad_ctx->rect.x = pad_ctx->x; |
| pad_ctx->rect.y = pad_ctx->y; |
| pad_ctx->rect.width = link->w; |
| pad_ctx->rect.height = link->h; |
| params.output_region = &pad_ctx->rect; |
| |
| params.output_background_color = (pad_ctx->pad_rgba[3] << 24 | |
| pad_ctx->pad_rgba[0] << 16 | |
| pad_ctx->pad_rgba[1] << 8 | |
| pad_ctx->pad_rgba[2]); |
| |
| err = ff_vaapi_vpp_render_picture(avctx, ¶ms, output_frame); |
| if (err < 0) |
| goto fail; |
| |
| av_frame_free(&input_frame); |
| |
| return ff_filter_frame(outlink, output_frame); |
| |
| fail: |
| av_frame_free(&input_frame); |
| av_frame_free(&output_frame); |
| return err; |
| } |
| |
| static av_cold int pad_vaapi_init(AVFilterContext *avctx) |
| { |
| VAAPIVPPContext *vpp_ctx = avctx->priv; |
| |
| ff_vaapi_vpp_ctx_init(avctx); |
| vpp_ctx->pipeline_uninit = ff_vaapi_vpp_pipeline_uninit; |
| vpp_ctx->output_format = AV_PIX_FMT_NONE; |
| |
| return 0; |
| } |
| |
| #define OFFSET(x) offsetof(PadVAAPIContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| |
| static const AVOption pad_vaapi_options[] = { |
| { "width", "set the pad area width", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, FLAGS }, |
| { "w", "set the pad area width", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, FLAGS }, |
| { "height", "set the pad area height", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, FLAGS }, |
| { "h", "set the pad area height", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, FLAGS }, |
| { "x", "set the x offset for the input image position", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, INT16_MAX, FLAGS }, |
| { "y", "set the y offset for the input image position", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, INT16_MAX, FLAGS }, |
| { "color", "set the color of the padded area border", OFFSET(pad_rgba), AV_OPT_TYPE_COLOR, { .str = "black" }, 0, 0, FLAGS }, |
| { "aspect", "pad to fit an aspect instead of a resolution", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl = 0}, 0, INT16_MAX, FLAGS }, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(pad_vaapi); |
| |
| static const AVFilterPad pad_vaapi_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = pad_vaapi_filter_frame, |
| .config_props = &ff_vaapi_vpp_config_input, |
| }, |
| }; |
| |
| static const AVFilterPad pad_vaapi_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = &pad_vaapi_config_output, |
| }, |
| }; |
| |
| const AVFilter ff_vf_pad_vaapi = { |
| .name = "pad_vaapi", |
| .description = NULL_IF_CONFIG_SMALL("Pad the input video."), |
| .priv_size = sizeof(PadVAAPIContext), |
| .priv_class = &pad_vaapi_class, |
| .init = &pad_vaapi_init, |
| .uninit = &ff_vaapi_vpp_ctx_uninit, |
| FILTER_INPUTS(pad_vaapi_inputs), |
| FILTER_OUTPUTS(pad_vaapi_outputs), |
| FILTER_QUERY_FUNC(&ff_vaapi_vpp_query_formats), |
| .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, |
| }; |