* Copyright (c) 2008 vmrsss
* Copyright (c) 2009 Stefano Sabatini
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
- * video padding filter and color source
+ * video padding filter
*/
#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+#include "libavutil/avstring.h"
+#include "libavutil/eval.h"
#include "libavutil/pixdesc.h"
#include "libavutil/colorspace.h"
#include "libavutil/avassert.h"
-#include "libavcore/imgutils.h"
-#include "libavcore/parseutils.h"
-
-enum { RED = 0, GREEN, BLUE, ALPHA };
-
-static int fill_line_with_color(uint8_t *line[4], int line_step[4], int w, uint8_t color[4],
- enum PixelFormat pix_fmt, uint8_t rgba_color[4], int *is_packed_rgba)
-{
- uint8_t rgba_map[4] = {0};
- int i;
- const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[pix_fmt];
- int hsub = pix_desc->log2_chroma_w;
-
- *is_packed_rgba = 1;
- switch (pix_fmt) {
- case PIX_FMT_ARGB: rgba_map[ALPHA] = 0; rgba_map[RED ] = 1; rgba_map[GREEN] = 2; rgba_map[BLUE ] = 3; break;
- case PIX_FMT_ABGR: rgba_map[ALPHA] = 0; rgba_map[BLUE ] = 1; rgba_map[GREEN] = 2; rgba_map[RED ] = 3; break;
- case PIX_FMT_RGBA:
- case PIX_FMT_RGB24: rgba_map[RED ] = 0; rgba_map[GREEN] = 1; rgba_map[BLUE ] = 2; rgba_map[ALPHA] = 3; break;
- case PIX_FMT_BGRA:
- case PIX_FMT_BGR24: rgba_map[BLUE ] = 0; rgba_map[GREEN] = 1; rgba_map[RED ] = 2; rgba_map[ALPHA] = 3; break;
- default:
- *is_packed_rgba = 0;
- }
-
- if (*is_packed_rgba) {
- line_step[0] = (av_get_bits_per_pixel(pix_desc))>>3;
- for (i = 0; i < 4; i++)
- color[rgba_map[i]] = rgba_color[i];
-
- line[0] = av_malloc(w * line_step[0]);
- for (i = 0; i < w; i++)
- memcpy(line[0] + i * line_step[0], color, line_step[0]);
- } else {
- int plane;
-
- color[RED ] = RGB_TO_Y_CCIR(rgba_color[0], rgba_color[1], rgba_color[2]);
- color[GREEN] = RGB_TO_U_CCIR(rgba_color[0], rgba_color[1], rgba_color[2], 0);
- color[BLUE ] = RGB_TO_V_CCIR(rgba_color[0], rgba_color[1], rgba_color[2], 0);
- color[ALPHA] = rgba_color[3];
-
- for (plane = 0; plane < 4; plane++) {
- int line_size;
- int hsub1 = (plane == 1 || plane == 2) ? hsub : 0;
-
- line_step[plane] = 1;
- line_size = (w >> hsub1) * line_step[plane];
- line[plane] = av_malloc(line_size);
- memset(line[plane], color[plane], line_size);
- }
- }
-
- return 0;
-}
-
-static void draw_rectangle(AVFilterBufferRef *outpic, uint8_t *line[4], int line_step[4],
- int hsub, int vsub, int x, int y, int w, int h)
-{
- int i, plane;
- uint8_t *p;
-
- for (plane = 0; plane < 4 && outpic->data[plane]; plane++) {
- int hsub1 = plane == 1 || plane == 2 ? hsub : 0;
- int vsub1 = plane == 1 || plane == 2 ? vsub : 0;
-
- p = outpic->data[plane] + (y >> vsub1) * outpic->linesize[plane];
- for (i = 0; i < (h >> vsub1); i++) {
- memcpy(p + (x >> hsub1) * line_step[plane], line[plane], (w >> hsub1) * line_step[plane]);
- p += outpic->linesize[plane];
- }
- }
-}
+#include "libavutil/imgutils.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/mathematics.h"
+#include "drawutils.h"
+
+static const char *const var_names[] = {
+ "PI",
+ "PHI",
+ "E",
+ "in_w", "iw",
+ "in_h", "ih",
+ "out_w", "ow",
+ "out_h", "oh",
+ "x",
+ "y",
+ "a",
+ "hsub",
+ "vsub",
+ NULL
+};
-static void copy_rectangle(AVFilterBufferRef *outpic,uint8_t *line[4], int line_step[4], int linesize[4],
- int hsub, int vsub, int x, int y, int y2, int w, int h)
-{
- int i, plane;
- uint8_t *p;
-
- for (plane = 0; plane < 4 && outpic->data[plane]; plane++) {
- int hsub1 = plane == 1 || plane == 2 ? hsub : 0;
- int vsub1 = plane == 1 || plane == 2 ? vsub : 0;
-
- p = outpic->data[plane] + (y >> vsub1) * outpic->linesize[plane];
- for (i = 0; i < (h >> vsub1); i++) {
- memcpy(p + (x >> hsub1) * line_step[plane], line[plane] + linesize[plane]*(i+(y2>>vsub1)), (w >> hsub1) * line_step[plane]);
- p += outpic->linesize[plane];
- }
- }
-}
+enum var_name {
+ VAR_PI,
+ VAR_PHI,
+ VAR_E,
+ 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_HSUB,
+ VAR_VSUB,
+ VARS_NB
+};
static int query_formats(AVFilterContext *ctx)
{
PIX_FMT_NONE
};
- avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0;
}
-#if CONFIG_PAD_FILTER
-
typedef struct {
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
+ char w_expr[256]; ///< width expression string
+ char h_expr[256]; ///< height expression string
+ char x_expr[256]; ///< width expression string
+ char y_expr[256]; ///< height expression string
+
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 needs_copy;
} PadContext;
-static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
+static av_cold int init(AVFilterContext *ctx, const char *args)
{
PadContext *pad = ctx->priv;
char color_string[128] = "black";
+ av_strlcpy(pad->w_expr, "iw", sizeof(pad->w_expr));
+ av_strlcpy(pad->h_expr, "ih", sizeof(pad->h_expr));
+ av_strlcpy(pad->x_expr, "0" , sizeof(pad->w_expr));
+ av_strlcpy(pad->y_expr, "0" , sizeof(pad->h_expr));
+
if (args)
- sscanf(args, "%d:%d:%d:%d:%s", &pad->w, &pad->h, &pad->x, &pad->y, color_string);
+ sscanf(args, "%255[^:]:%255[^:]:%255[^:]:%255[^:]:%255s",
+ pad->w_expr, pad->h_expr, pad->x_expr, pad->y_expr, color_string);
if (av_parse_color(pad->color, color_string, -1, ctx) < 0)
return AVERROR(EINVAL);
- /* sanity check params */
- if (pad->w < 0 || pad->h < 0) {
- av_log(ctx, AV_LOG_ERROR, "Negative size values are not acceptable.\n");
- return AVERROR(EINVAL);
- }
-
return 0;
}
PadContext *pad = ctx->priv;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
uint8_t rgba_color[4];
- int is_packed_rgba;
+ int ret, is_packed_rgba;
+ double var_values[VARS_NB], res;
+ char *expr;
pad->hsub = pix_desc->log2_chroma_w;
pad->vsub = pix_desc->log2_chroma_h;
+ 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] = (float) inlink->w / inlink->h;
+ var_values[VAR_HSUB] = 1<<pad->hsub;
+ var_values[VAR_VSUB] = 1<<pad->vsub;
+
+ /* evaluate width and height */
+ av_expr_parse_and_eval(&res, (expr = pad->w_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx);
+ pad->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
+ if ((ret = av_expr_parse_and_eval(&res, (expr = pad->h_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
+ goto eval_fail;
+ pad->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
+ /* evaluate the width again, as it may depend on the evaluated output height */
+ if ((ret = av_expr_parse_and_eval(&res, (expr = pad->w_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
+ goto eval_fail;
+ pad->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
+
+ /* evaluate x and y */
+ av_expr_parse_and_eval(&res, (expr = pad->x_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx);
+ pad->x = var_values[VAR_X] = res;
+ if ((ret = av_expr_parse_and_eval(&res, (expr = pad->y_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
+ goto eval_fail;
+ pad->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 = pad->x_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
+ goto eval_fail;
+ pad->x = var_values[VAR_X] = res;
+
+ /* sanity check params */
+ if (pad->w < 0 || pad->h < 0 || pad->x < 0 || pad->y < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Negative values are not acceptable.\n");
+ return AVERROR(EINVAL);
+ }
+
if (!pad->w)
pad->w = inlink->w;
if (!pad->h)
pad->in_h = inlink->h & ~((1 << pad->vsub) - 1);
memcpy(rgba_color, pad->color, sizeof(rgba_color));
- fill_line_with_color(pad->line, pad->line_step, pad->w, pad->color,
- inlink->format, rgba_color, &is_packed_rgba);
+ ff_fill_line_with_color(pad->line, pad->line_step, pad->w, pad->color,
+ inlink->format, rgba_color, &is_packed_rgba, NULL);
- av_log(ctx, AV_LOG_INFO, "w:%d h:%d x:%d y:%d color:0x%02X%02X%02X%02X[%s]\n",
- pad->w, pad->h, pad->x, pad->y,
+ 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",
+ inlink->w, inlink->h, pad->w, pad->h, pad->x, pad->y,
pad->color[0], pad->color[1], pad->color[2], pad->color[3],
is_packed_rgba ? "rgba" : "yuva");
}
return 0;
+
+eval_fail:
+ av_log(NULL, AV_LOG_ERROR,
+ "Error when evaluating the expression '%s'\n", expr);
+ return ret;
+
}
static int config_output(AVFilterLink *outlink)
{
PadContext *pad = inlink->dst->priv;
- AVFilterBufferRef *picref = avfilter_get_video_buffer(inlink->dst->outputs[0], perms,
- w + (pad->w - pad->in_w),
- h + (pad->h - pad->in_h));
+ AVFilterBufferRef *picref = ff_get_video_buffer(inlink->dst->outputs[0], perms,
+ w + (pad->w - pad->in_w),
+ h + (pad->h - pad->in_h));
int plane;
picref->video->w = w;
{
PadContext *pad = inlink->dst->priv;
AVFilterBufferRef *outpicref = avfilter_ref_buffer(inpicref, ~0);
+ AVFilterBufferRef *for_next_filter;
int plane;
for (plane = 0; plane < 4 && outpicref->data[plane]; plane++) {
if(pad->needs_copy){
av_log(inlink->dst, AV_LOG_DEBUG, "Direct padding impossible allocating new frame\n");
avfilter_unref_buffer(outpicref);
- outpicref = avfilter_get_video_buffer(inlink->dst->outputs[0], AV_PERM_WRITE | AV_PERM_NEG_LINESIZES,
- FFMAX(inlink->w, pad->w),
- FFMAX(inlink->h, pad->h));
+ outpicref = ff_get_video_buffer(inlink->dst->outputs[0], AV_PERM_WRITE | AV_PERM_NEG_LINESIZES,
+ FFMAX(inlink->w, pad->w),
+ FFMAX(inlink->h, pad->h));
avfilter_copy_buffer_ref_props(outpicref, inpicref);
}
outpicref->video->w = pad->w;
outpicref->video->h = pad->h;
- avfilter_start_frame(inlink->dst->outputs[0], outpicref);
+ for_next_filter = avfilter_ref_buffer(outpicref, ~0);
+ ff_start_frame(inlink->dst->outputs[0], for_next_filter);
}
static void end_frame(AVFilterLink *link)
{
- avfilter_end_frame(link->dst->outputs[0]);
- avfilter_unref_buffer(link->cur_buf);
+ ff_end_frame(link->dst->outputs[0]);
}
static void draw_send_bar_slice(AVFilterLink *link, int y, int h, int slice_dir, int before_slice)
}
if (bar_h) {
- draw_rectangle(link->dst->outputs[0]->out_buf,
- pad->line, pad->line_step, pad->hsub, pad->vsub,
- 0, bar_y, pad->w, bar_h);
- avfilter_draw_slice(link->dst->outputs[0], bar_y, bar_h, slice_dir);
+ ff_draw_rectangle(link->dst->outputs[0]->out_buf->data,
+ link->dst->outputs[0]->out_buf->linesize,
+ pad->line, pad->line_step, pad->hsub, pad->vsub,
+ 0, bar_y, pad->w, bar_h);
+ ff_draw_slice(link->dst->outputs[0], bar_y, bar_h, slice_dir);
}
}
draw_send_bar_slice(link, y, h, slice_dir, 1);
/* left border */
- draw_rectangle(outpic, pad->line, pad->line_step, pad->hsub, pad->vsub,
- 0, y, pad->x, h);
+ ff_draw_rectangle(outpic->data, outpic->linesize, pad->line, pad->line_step,
+ pad->hsub, pad->vsub, 0, y, pad->x, h);
if(pad->needs_copy){
- copy_rectangle(outpic,
- inpic->data, pad->line_step, inpic->linesize, pad->hsub, pad->vsub,
- pad->x, y, y-pad->y, inpic->video->w, h);
+ ff_copy_rectangle(outpic->data, outpic->linesize,
+ inpic->data, inpic->linesize, pad->line_step,
+ pad->hsub, pad->vsub,
+ pad->x, y, y-pad->y, inpic->video->w, h);
}
/* right border */
- draw_rectangle(outpic, pad->line, pad->line_step, pad->hsub, pad->vsub,
- pad->x + pad->in_w, y, pad->w - pad->x - pad->in_w, h);
- avfilter_draw_slice(link->dst->outputs[0], y, h, slice_dir);
+ ff_draw_rectangle(outpic->data, outpic->linesize,
+ pad->line, pad->line_step, pad->hsub, pad->vsub,
+ pad->x + pad->in_w, y, pad->w - pad->x - pad->in_w, h);
+ ff_draw_slice(link->dst->outputs[0], y, h, slice_dir);
draw_send_bar_slice(link, y, h, slice_dir, -1);
}
.config_props = config_output, },
{ .name = NULL}},
};
-
-#endif /* CONFIG_PAD_FILTER */
-
-#if CONFIG_COLOR_FILTER
-
-typedef struct {
- int w, h;
- uint8_t color[4];
- AVRational time_base;
- uint8_t *line[4];
- int line_step[4];
- int hsub, vsub; ///< chroma subsampling values
- uint64_t pts;
-} ColorContext;
-
-static av_cold int color_init(AVFilterContext *ctx, const char *args, void *opaque)
-{
- ColorContext *color = ctx->priv;
- char color_string[128] = "black";
- char frame_size [128] = "320x240";
- char frame_rate [128] = "25";
- AVRational frame_rate_q;
- int ret;
-
- if (args)
- sscanf(args, "%127[^:]:%127[^:]:%127s", color_string, frame_size, frame_rate);
-
- if (av_parse_video_size(&color->w, &color->h, frame_size) < 0) {
- av_log(ctx, AV_LOG_ERROR, "Invalid frame size: %s\n", frame_size);
- return AVERROR(EINVAL);
- }
-
- if (av_parse_video_rate(&frame_rate_q, frame_rate) < 0 ||
- frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
- av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: %s\n", frame_rate);
- return AVERROR(EINVAL);
- }
- color->time_base.num = frame_rate_q.den;
- color->time_base.den = frame_rate_q.num;
-
- if ((ret = av_parse_color(color->color, color_string, -1, ctx)) < 0)
- return ret;
-
- return 0;
-}
-
-static av_cold void color_uninit(AVFilterContext *ctx)
-{
- ColorContext *color = ctx->priv;
- int i;
-
- for (i = 0; i < 4; i++) {
- av_freep(&color->line[i]);
- color->line_step[i] = 0;
- }
-}
-
-static int color_config_props(AVFilterLink *inlink)
-{
- AVFilterContext *ctx = inlink->src;
- ColorContext *color = ctx->priv;
- uint8_t rgba_color[4];
- int is_packed_rgba;
- const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
-
- color->hsub = pix_desc->log2_chroma_w;
- color->vsub = pix_desc->log2_chroma_h;
-
- color->w &= ~((1 << color->hsub) - 1);
- color->h &= ~((1 << color->vsub) - 1);
- if (av_image_check_size(color->w, color->h, 0, ctx) < 0)
- return AVERROR(EINVAL);
-
- memcpy(rgba_color, color->color, sizeof(rgba_color));
- fill_line_with_color(color->line, color->line_step, color->w, color->color,
- inlink->format, rgba_color, &is_packed_rgba);
-
- av_log(ctx, AV_LOG_INFO, "w:%d h:%d r:%d/%d color:0x%02x%02x%02x%02x[%s]\n",
- color->w, color->h, color->time_base.den, color->time_base.num,
- color->color[0], color->color[1], color->color[2], color->color[3],
- is_packed_rgba ? "rgba" : "yuva");
- inlink->w = color->w;
- inlink->h = color->h;
-
- return 0;
-}
-
-static int color_request_frame(AVFilterLink *link)
-{
- ColorContext *color = link->src->priv;
- AVFilterBufferRef *picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, color->w, color->h);
- picref->video->pixel_aspect = (AVRational) {1, 1};
- picref->pts = av_rescale_q(color->pts++, color->time_base, AV_TIME_BASE_Q);
- picref->pos = 0;
-
- avfilter_start_frame(link, avfilter_ref_buffer(picref, ~0));
- draw_rectangle(picref,
- color->line, color->line_step, color->hsub, color->vsub,
- 0, 0, color->w, color->h);
- avfilter_draw_slice(link, 0, color->h, 1);
- avfilter_end_frame(link);
- avfilter_unref_buffer(picref);
-
- return 0;
-}
-
-AVFilter avfilter_vsrc_color = {
- .name = "color",
- .description = NULL_IF_CONFIG_SMALL("Provide an uniformly colored input, syntax is: [color[:size[:rate]]]"),
-
- .priv_size = sizeof(ColorContext),
- .init = color_init,
- .uninit = color_uninit,
-
- .query_formats = query_formats,
-
- .inputs = (AVFilterPad[]) {{ .name = NULL}},
-
- .outputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .request_frame = color_request_frame,
- .config_props = color_config_props },
- { .name = NULL}},
-};
-
-#endif /* CONFIG_COLOR_FILTER */
projects / ffmpeg / blobdiff