diff options
Diffstat (limited to 'libavfilter/vf_pad.c')
-rw-r--r-- | libavfilter/vf_pad.c | 284 |
1 files changed, 143 insertions, 141 deletions
diff --git a/libavfilter/vf_pad.c b/libavfilter/vf_pad.c index d9015470fa..ed155578e1 100644 --- a/libavfilter/vf_pad.c +++ b/libavfilter/vf_pad.c @@ -2,20 +2,20 @@ * Copyright (c) 2008 vmrsss * Copyright (c) 2009 Stefano Sabatini * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -24,6 +24,8 @@ * video padding filter */ +#include <float.h> /* DBL_MAX */ + #include "avfilter.h" #include "formats.h" #include "internal.h" @@ -41,9 +43,6 @@ #include "drawutils.h" static const char *const var_names[] = { - "PI", - "PHI", - "E", "in_w", "iw", "in_h", "ih", "out_w", "ow", @@ -51,15 +50,14 @@ static const char *const var_names[] = { "x", "y", "a", + "sar", + "dar", "hsub", "vsub", NULL }; enum var_name { - VAR_PI, - VAR_PHI, - VAR_E, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, @@ -67,6 +65,8 @@ enum var_name { VAR_X, VAR_Y, VAR_A, + VAR_SAR, + VAR_DAR, VAR_HSUB, VAR_VSUB, VARS_NB @@ -74,87 +74,56 @@ enum var_name { static int query_formats(AVFilterContext *ctx) { - static const enum AVPixelFormat pix_fmts[] = { - AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA, - AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, - AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, - - AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, - AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, - AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P, - AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, - AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ440P, - AV_PIX_FMT_YUVA420P, - - AV_PIX_FMT_NONE - }; - - ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); - return 0; + return ff_set_common_formats(ctx, ff_draw_supported_pixel_formats(0)); } +enum EvalMode { + EVAL_MODE_INIT, + EVAL_MODE_FRAME, + EVAL_MODE_NB +}; + typedef struct PadContext { const AVClass *class; int w, h; ///< output dimensions, a value of 0 will result in the input size int x, y; ///< offsets of the input area with respect to the padded area int in_w, in_h; ///< width and height for the padded input video, which has to be aligned to the chroma values in order to avoid chroma issues + int inlink_w, inlink_h; + AVRational aspect; char *w_expr; ///< width expression string char *h_expr; ///< height expression string char *x_expr; ///< width expression string char *y_expr; ///< height expression string - char *color_str; + uint8_t rgba_color[4]; ///< color for the padding area + FFDrawContext draw; + FFDrawColor color; - uint8_t color[4]; ///< color expressed either in YUVA or RGBA colorspace for the padding area - uint8_t *line[4]; - int line_step[4]; - int hsub, vsub; ///< chroma subsampling values + int eval_mode; ///< expression evaluation mode } PadContext; -static av_cold int init(AVFilterContext *ctx) -{ - PadContext *s = ctx->priv; - - if (av_parse_color(s->color, s->color_str, -1, ctx) < 0) - return AVERROR(EINVAL); - - return 0; -} - -static av_cold void uninit(AVFilterContext *ctx) -{ - PadContext *s = ctx->priv; - int i; - - for (i = 0; i < 4; i++) { - av_freep(&s->line[i]); - s->line_step[i] = 0; - } -} - static int config_input(AVFilterLink *inlink) { AVFilterContext *ctx = inlink->dst; PadContext *s = ctx->priv; - const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format); - uint8_t rgba_color[4]; - int ret, is_packed_rgba; + AVRational adjusted_aspect = s->aspect; + int ret; double var_values[VARS_NB], res; char *expr; - s->hsub = pix_desc->log2_chroma_w; - s->vsub = pix_desc->log2_chroma_h; + ff_draw_init(&s->draw, inlink->format, 0); + ff_draw_color(&s->draw, &s->color, s->rgba_color); - var_values[VAR_PI] = M_PI; - var_values[VAR_PHI] = M_PHI; - var_values[VAR_E] = M_E; 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_HSUB] = 1<<s->hsub; - var_values[VAR_VSUB] = 1<<s->vsub; + 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]; + var_values[VAR_HSUB] = 1 << s->draw.hsub_max; + var_values[VAR_VSUB] = 1 << s->draw.vsub_max; /* evaluate width and height */ av_expr_parse_and_eval(&res, (expr = s->w_expr), @@ -178,6 +147,15 @@ static int config_input(AVFilterLink *inlink) if (!s->w) var_values[VAR_OUT_W] = var_values[VAR_OW] = s->w = inlink->w; + if (adjusted_aspect.num && adjusted_aspect.den) { + adjusted_aspect = av_div_q(adjusted_aspect, inlink->sample_aspect_ratio); + if (s->h < av_rescale(s->w, adjusted_aspect.den, adjusted_aspect.num)) { + s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = av_rescale(s->w, adjusted_aspect.den, adjusted_aspect.num); + } else { + s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = av_rescale(s->h, adjusted_aspect.num, adjusted_aspect.den); + } + } + /* evaluate x and y */ av_expr_parse_and_eval(&res, (expr = s->x_expr), var_names, var_values, @@ -195,28 +173,29 @@ static int config_input(AVFilterLink *inlink) goto eval_fail; s->x = var_values[VAR_X] = res; + if (s->x < 0 || s->x + inlink->w > s->w) + s->x = var_values[VAR_X] = (s->w - inlink->w) / 2; + if (s->y < 0 || s->y + inlink->h > s->h) + s->y = var_values[VAR_Y] = (s->h - inlink->h) / 2; + /* sanity check params */ - if (s->w < 0 || s->h < 0 || s->x < 0 || s->y < 0) { + if (s->w < 0 || s->h < 0) { av_log(ctx, AV_LOG_ERROR, "Negative values are not acceptable.\n"); return AVERROR(EINVAL); } - s->w &= ~((1 << s->hsub) - 1); - s->h &= ~((1 << s->vsub) - 1); - s->x &= ~((1 << s->hsub) - 1); - s->y &= ~((1 << s->vsub) - 1); - - s->in_w = inlink->w & ~((1 << s->hsub) - 1); - s->in_h = inlink->h & ~((1 << s->vsub) - 1); - - memcpy(rgba_color, s->color, sizeof(rgba_color)); - ff_fill_line_with_color(s->line, s->line_step, s->w, s->color, - inlink->format, rgba_color, &is_packed_rgba, NULL); + s->w = ff_draw_round_to_sub(&s->draw, 0, -1, s->w); + s->h = ff_draw_round_to_sub(&s->draw, 1, -1, s->h); + s->x = ff_draw_round_to_sub(&s->draw, 0, -1, s->x); + s->y = ff_draw_round_to_sub(&s->draw, 1, -1, s->y); + s->in_w = ff_draw_round_to_sub(&s->draw, 0, -1, inlink->w); + s->in_h = ff_draw_round_to_sub(&s->draw, 1, -1, inlink->h); + s->inlink_w = inlink->w; + s->inlink_h = inlink->h; - av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d -> w:%d h:%d x:%d y:%d color:0x%02X%02X%02X%02X[%s]\n", + av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d -> w:%d h:%d x:%d y:%d color:0x%02X%02X%02X%02X\n", inlink->w, inlink->h, s->w, s->h, s->x, s->y, - s->color[0], s->color[1], s->color[2], s->color[3], - is_packed_rgba ? "rgba" : "yuva"); + s->rgba_color[0], s->rgba_color[1], s->rgba_color[2], s->rgba_color[3]); if (s->x < 0 || s->y < 0 || s->w <= 0 || s->h <= 0 || @@ -249,24 +228,27 @@ static int config_output(AVFilterLink *outlink) static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h) { PadContext *s = inlink->dst->priv; - - AVFrame *frame = ff_get_video_buffer(inlink->dst->outputs[0], - w + (s->w - s->in_w), - h + (s->h - s->in_h)); + AVFrame *frame; int plane; + if (s->inlink_w <= 0) + return NULL; + + frame = ff_get_video_buffer(inlink->dst->outputs[0], + w + (s->w - s->in_w), + h + (s->h - s->in_h) + (s->x > 0)); + if (!frame) return NULL; frame->width = w; frame->height = h; - for (plane = 0; plane < 4 && frame->data[plane]; plane++) { - int hsub = (plane == 1 || plane == 2) ? s->hsub : 0; - int vsub = (plane == 1 || plane == 2) ? s->vsub : 0; - - frame->data[plane] += (s->x >> hsub) * s->line_step[plane] + - (s->y >> vsub) * frame->linesize[plane]; + for (plane = 0; plane < 4 && frame->data[plane] && frame->linesize[plane]; plane++) { + int hsub = s->draw.hsub[plane]; + int vsub = s->draw.vsub[plane]; + frame->data[plane] += (s->x >> hsub) * s->draw.pixelstep[plane] + + (s->y >> vsub) * frame->linesize[plane]; } return frame; @@ -287,38 +269,37 @@ static int buffer_needs_copy(PadContext *s, AVFrame *frame, AVBufferRef *buf) /* for each plane in this buffer, check that it can be padded without * going over buffer bounds or other planes */ for (i = 0; i < FF_ARRAY_ELEMS(planes) && planes[i] >= 0; i++) { - int hsub = (planes[i] == 1 || planes[i] == 2) ? s->hsub : 0; - int vsub = (planes[i] == 1 || planes[i] == 2) ? s->vsub : 0; + int hsub = s->draw.hsub[planes[i]]; + int vsub = s->draw.vsub[planes[i]]; uint8_t *start = frame->data[planes[i]]; - uint8_t *end = start + (frame->height >> hsub) * + uint8_t *end = start + (frame->height >> vsub) * frame->linesize[planes[i]]; /* amount of free space needed before the start and after the end * of the plane */ - ptrdiff_t req_start = (s->x >> hsub) * s->line_step[planes[i]] + + ptrdiff_t req_start = (s->x >> hsub) * s->draw.pixelstep[planes[i]] + (s->y >> vsub) * frame->linesize[planes[i]]; ptrdiff_t req_end = ((s->w - s->x - frame->width) >> hsub) * - s->line_step[planes[i]] + - (s->y >> vsub) * frame->linesize[planes[i]]; + s->draw.pixelstep[planes[i]] + + ((s->h - s->y - frame->height) >> vsub) * frame->linesize[planes[i]]; - if (frame->linesize[planes[i]] < (s->w >> hsub) * s->line_step[planes[i]]) + if (frame->linesize[planes[i]] < (s->w >> hsub) * s->draw.pixelstep[planes[i]]) return 1; if (start - buf->data < req_start || (buf->data + buf->size) - end < req_end) return 1; -#define SIGN(x) ((x) > 0 ? 1 : -1) for (j = 0; j < FF_ARRAY_ELEMS(planes) && planes[j] >= 0; j++) { - int hsub1 = (planes[j] == 1 || planes[j] == 2) ? s->hsub : 0; + int vsub1 = s->draw.vsub[planes[j]]; uint8_t *start1 = frame->data[planes[j]]; - uint8_t *end1 = start1 + (frame->height >> hsub1) * + uint8_t *end1 = start1 + (frame->height >> vsub1) * frame->linesize[planes[j]]; if (i == j) continue; - if (SIGN(start - end1) != SIGN(start - end1 - req_start) || - SIGN(end - start1) != SIGN(end - start1 + req_end)) + if (FFSIGN(start - end1) != FFSIGN(start - end1 - req_start) || + FFSIGN(end - start1) != FFSIGN(end - start1 + req_end)) return 1; } } @@ -333,7 +314,7 @@ static int frame_needs_copy(PadContext *s, AVFrame *frame) if (!av_frame_is_writable(frame)) return 1; - for (i = 0; i < FF_ARRAY_ELEMS(frame->buf) && frame->buf[i]; i++) + for (i = 0; i < 4 && frame->buf[i]; i++) if (buffer_needs_copy(s, frame, frame->buf[i])) return 1; return 0; @@ -342,8 +323,35 @@ static int frame_needs_copy(PadContext *s, AVFrame *frame) static int filter_frame(AVFilterLink *inlink, AVFrame *in) { PadContext *s = inlink->dst->priv; + AVFilterLink *outlink = inlink->dst->outputs[0]; AVFrame *out; - int needs_copy = frame_needs_copy(s, in); + int needs_copy; + if(s->eval_mode == EVAL_MODE_FRAME && ( + in->width != s->inlink_w + || in->height != s->inlink_h + || in->format != outlink->format + || in->sample_aspect_ratio.den != outlink->sample_aspect_ratio.den || in->sample_aspect_ratio.num != outlink->sample_aspect_ratio.num)) { + int ret; + + inlink->dst->inputs[0]->format = in->format; + inlink->dst->inputs[0]->w = in->width; + inlink->dst->inputs[0]->h = in->height; + + inlink->dst->inputs[0]->sample_aspect_ratio.den = in->sample_aspect_ratio.den; + inlink->dst->inputs[0]->sample_aspect_ratio.num = in->sample_aspect_ratio.num; + + + if ((ret = config_input(inlink)) < 0) { + s->inlink_w = -1; + return ret; + } + if ((ret = config_output(outlink)) < 0) { + s->inlink_w = -1; + return ret; + } + } + + needs_copy = frame_needs_copy(s, in); if (needs_copy) { av_log(inlink->dst, AV_LOG_DEBUG, "Direct padding impossible allocating new frame\n"); @@ -360,41 +368,40 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in) int i; out = in; - for (i = 0; i < FF_ARRAY_ELEMS(out->data) && out->data[i]; i++) { - int hsub = (i == 1 || i == 2) ? s->hsub : 0; - int vsub = (i == 1 || i == 2) ? s->vsub : 0; - out->data[i] -= (s->x >> hsub) * s->line_step[i] + + for (i = 0; i < 4 && out->data[i] && out->linesize[i]; i++) { + int hsub = s->draw.hsub[i]; + int vsub = s->draw.vsub[i]; + out->data[i] -= (s->x >> hsub) * s->draw.pixelstep[i] + (s->y >> vsub) * out->linesize[i]; } } /* top bar */ if (s->y) { - ff_draw_rectangle(out->data, out->linesize, - s->line, s->line_step, s->hsub, s->vsub, + ff_fill_rectangle(&s->draw, &s->color, + out->data, out->linesize, 0, 0, s->w, s->y); } /* bottom bar */ if (s->h > s->y + s->in_h) { - ff_draw_rectangle(out->data, out->linesize, - s->line, s->line_step, s->hsub, s->vsub, + ff_fill_rectangle(&s->draw, &s->color, + out->data, out->linesize, 0, s->y + s->in_h, s->w, s->h - s->y - s->in_h); } /* left border */ - ff_draw_rectangle(out->data, out->linesize, s->line, s->line_step, - s->hsub, s->vsub, 0, s->y, s->x, in->height); + ff_fill_rectangle(&s->draw, &s->color, out->data, out->linesize, + 0, s->y, s->x, in->height); if (needs_copy) { - ff_copy_rectangle(out->data, out->linesize, in->data, in->linesize, - s->line_step, s->hsub, s->vsub, - s->x, s->y, 0, in->width, in->height); + ff_copy_rectangle2(&s->draw, + out->data, out->linesize, in->data, in->linesize, + s->x, s->y, 0, 0, in->width, in->height); } /* right border */ - ff_draw_rectangle(out->data, out->linesize, - s->line, s->line_step, s->hsub, s->vsub, + ff_fill_rectangle(&s->draw, &s->color, out->data, out->linesize, s->x + s->in_w, s->y, s->w - s->x - s->in_w, in->height); @@ -407,24 +414,24 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in) } #define OFFSET(x) offsetof(PadContext, x) -#define FLAGS AV_OPT_FLAG_VIDEO_PARAM -static const AVOption options[] = { - { "width", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, { .str = "iw" }, .flags = FLAGS }, - { "height", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, { .str = "ih" }, .flags = FLAGS }, - { "x", "Horizontal position of the left edge of the input video in the " - "output video", OFFSET(x_expr), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS }, - { "y", "Vertical position of the top edge of the input video in the " - "output video", OFFSET(y_expr), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS }, - { "color", "Color of the padded area", OFFSET(color_str), AV_OPT_TYPE_STRING, { .str = "black" }, .flags = FLAGS }, - { NULL }, +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM + +static const AVOption pad_options[] = { + { "width", "set the pad area width expression", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, CHAR_MIN, CHAR_MAX, FLAGS }, + { "w", "set the pad area width expression", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, CHAR_MIN, CHAR_MAX, FLAGS }, + { "height", "set the pad area height expression", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, CHAR_MIN, CHAR_MAX, FLAGS }, + { "h", "set the pad area height expression", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, CHAR_MIN, CHAR_MAX, FLAGS }, + { "x", "set the x offset expression for the input image position", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, CHAR_MIN, CHAR_MAX, FLAGS }, + { "y", "set the y offset expression for the input image position", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, CHAR_MIN, CHAR_MAX, FLAGS }, + { "color", "set the color of the padded area border", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str = "black"}, .flags = FLAGS }, + { "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, {.i64 = EVAL_MODE_INIT}, 0, EVAL_MODE_NB-1, FLAGS, "eval" }, + { "init", "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_INIT}, .flags = FLAGS, .unit = "eval" }, + { "frame", "eval expressions during initialization and per-frame", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_FRAME}, .flags = FLAGS, .unit = "eval" }, + { "aspect", "pad to fit an aspect instead of a resolution", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl = 0}, 0, DBL_MAX, FLAGS }, + { NULL } }; -static const AVClass pad_class = { - .class_name = "pad", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; +AVFILTER_DEFINE_CLASS(pad); static const AVFilterPad avfilter_vf_pad_inputs[] = { { @@ -448,15 +455,10 @@ static const AVFilterPad avfilter_vf_pad_outputs[] = { AVFilter ff_vf_pad = { .name = "pad", - .description = NULL_IF_CONFIG_SMALL("Pad input image to width:height[:x:y[:color]] (default x and y: 0, default color: black)."), - + .description = NULL_IF_CONFIG_SMALL("Pad the input video."), .priv_size = sizeof(PadContext), .priv_class = &pad_class, - .init = init, - .uninit = uninit, .query_formats = query_formats, - - .inputs = avfilter_vf_pad_inputs, - - .outputs = avfilter_vf_pad_outputs, + .inputs = avfilter_vf_pad_inputs, + .outputs = avfilter_vf_pad_outputs, }; |