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