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-rw-r--r--libavfilter/vf_aspect.c120
1 files changed, 73 insertions, 47 deletions
diff --git a/libavfilter/vf_aspect.c b/libavfilter/vf_aspect.c
index 6fb2aeccab..25dde7f162 100644
--- a/libavfilter/vf_aspect.c
+++ b/libavfilter/vf_aspect.c
@@ -1,20 +1,20 @@
/*
* Copyright (c) 2010 Bobby Bingham
-
- * This file is part of Libav.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * 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
*/
@@ -26,8 +26,10 @@
#include <float.h>
#include "libavutil/common.h"
+#include "libavutil/eval.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "internal.h"
@@ -36,25 +38,42 @@
typedef struct {
const AVClass *class;
AVRational aspect;
+ int max;
#if FF_API_OLD_FILTER_OPTS
- float aspect_num, aspect_den;
+ float aspect_den;
#endif
+ char *ratio_str;
} AspectContext;
-#if FF_API_OLD_FILTER_OPTS
static av_cold int init(AVFilterContext *ctx)
{
AspectContext *s = ctx->priv;
+ int ret;
- if (s->aspect_num > 0 && s->aspect_den > 0) {
- av_log(ctx, AV_LOG_WARNING, "This syntax is deprecated, use "
- "dar=<number> or dar=num/den.\n");
- s->aspect = av_d2q(s->aspect_num / s->aspect_den, INT_MAX);
+#if FF_API_OLD_FILTER_OPTS
+ if (s->ratio_str && s->aspect_den > 0) {
+ double num;
+ av_log(ctx, AV_LOG_WARNING,
+ "num:den syntax is deprecated, please use num/den or named options instead\n");
+ ret = av_expr_parse_and_eval(&num, s->ratio_str, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx);
+ if (ret < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Unable to parse ratio numerator \"%s\"\n", s->ratio_str);
+ return AVERROR(EINVAL);
+ }
+ s->aspect = av_d2q(num / s->aspect_den, s->max);
+ } else
+#endif
+ if (s->ratio_str) {
+ ret = av_parse_ratio(&s->aspect, s->ratio_str, s->max, 0, ctx);
+ if (ret < 0 || s->aspect.num < 0 || s->aspect.den <= 0) {
+ av_log(ctx, AV_LOG_ERROR,
+ "Invalid string '%s' for aspect ratio\n", s->ratio_str);
+ return AVERROR(EINVAL);
+ }
}
-
return 0;
}
-#endif
static int filter_frame(AVFilterLink *link, AVFrame *frame)
{
@@ -65,47 +84,55 @@ static int filter_frame(AVFilterLink *link, AVFrame *frame)
}
#define OFFSET(x) offsetof(AspectContext, x)
-#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
+#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+
+static inline void compute_dar(AVRational *dar, AVRational sar, int w, int h)
+{
+ if (sar.num && sar.den) {
+ av_reduce(&dar->num, &dar->den, sar.num * w, sar.den * h, INT_MAX);
+ } else {
+ av_reduce(&dar->num, &dar->den, w, h, INT_MAX);
+ }
+}
#if CONFIG_SETDAR_FILTER
-/* for setdar filter, convert from frame aspect ratio to pixel aspect ratio */
+
static int setdar_config_props(AVFilterLink *inlink)
{
AspectContext *aspect = inlink->dst->priv;
- AVRational dar = aspect->aspect;
+ AVRational dar = aspect->aspect, old_dar;
+ AVRational old_sar = inlink->sample_aspect_ratio;
if (aspect->aspect.num && aspect->aspect.den) {
av_reduce(&aspect->aspect.num, &aspect->aspect.den,
aspect->aspect.num * inlink->h,
- aspect->aspect.den * inlink->w, 100);
+ aspect->aspect.den * inlink->w, INT_MAX);
inlink->sample_aspect_ratio = aspect->aspect;
} else {
inlink->sample_aspect_ratio = (AVRational){ 1, 1 };
dar = (AVRational){ inlink->w, inlink->h };
}
- av_log(inlink->dst, AV_LOG_VERBOSE, "w:%d h:%d -> dar:%d/%d sar:%d/%d\n",
- inlink->w, inlink->h, dar.num, dar.den,
- inlink->sample_aspect_ratio.num, inlink->sample_aspect_ratio.den);
+ compute_dar(&old_dar, old_sar, inlink->w, inlink->h);
+ av_log(inlink->dst, AV_LOG_VERBOSE, "w:%d h:%d dar:%d/%d sar:%d/%d -> dar:%d/%d sar:%d/%d\n",
+ inlink->w, inlink->h, old_dar.num, old_dar.den, old_sar.num, old_sar.den,
+ dar.num, dar.den, inlink->sample_aspect_ratio.num, inlink->sample_aspect_ratio.den);
return 0;
}
static const AVOption setdar_options[] = {
+ { "dar", "set display aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
+ { "ratio", "set display aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
+ { "r", "set display aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
#if FF_API_OLD_FILTER_OPTS
- { "dar_num", NULL, OFFSET(aspect_num), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
{ "dar_den", NULL, OFFSET(aspect_den), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
#endif
- { "dar", "display aspect ratio", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, INT_MAX, FLAGS },
- { NULL },
+ { "max", "set max value for nominator or denominator in the ratio", OFFSET(max), AV_OPT_TYPE_INT, {.i64=100}, 1, INT_MAX, FLAGS },
+ { NULL }
};
-static const AVClass setdar_class = {
- .class_name = "setdar",
- .item_name = av_default_item_name,
- .option = setdar_options,
- .version = LIBAVUTIL_VERSION_INT,
-};
+AVFILTER_DEFINE_CLASS(setdar);
static const AVFilterPad avfilter_vf_setdar_inputs[] = {
{
@@ -129,11 +156,7 @@ static const AVFilterPad avfilter_vf_setdar_outputs[] = {
AVFilter avfilter_vf_setdar = {
.name = "setdar",
.description = NULL_IF_CONFIG_SMALL("Set the frame display aspect ratio."),
-
-#if FF_API_OLD_FILTER_OPTS
.init = init,
-#endif
-
.priv_size = sizeof(AspectContext),
.priv_class = &setdar_class,
@@ -141,34 +164,40 @@ AVFilter avfilter_vf_setdar = {
.outputs = avfilter_vf_setdar_outputs,
};
+
#endif /* CONFIG_SETDAR_FILTER */
#if CONFIG_SETSAR_FILTER
-/* for setdar filter, convert from frame aspect ratio to pixel aspect ratio */
+
static int setsar_config_props(AVFilterLink *inlink)
{
AspectContext *aspect = inlink->dst->priv;
+ AVRational old_sar = inlink->sample_aspect_ratio;
+ AVRational old_dar, dar;
inlink->sample_aspect_ratio = aspect->aspect;
+ compute_dar(&old_dar, old_sar, inlink->w, inlink->h);
+ compute_dar(&dar, aspect->aspect, inlink->w, inlink->h);
+ av_log(inlink->dst, AV_LOG_VERBOSE, "w:%d h:%d sar:%d/%d dar:%d/%d -> sar:%d/%d dar:%d/%d\n",
+ inlink->w, inlink->h, old_sar.num, old_sar.den, old_dar.num, old_dar.den,
+ inlink->sample_aspect_ratio.num, inlink->sample_aspect_ratio.den, dar.num, dar.den);
+
return 0;
}
static const AVOption setsar_options[] = {
+ { "sar", "set sample (pixel) aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
+ { "ratio", "set sample (pixel) aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
+ { "r", "set sample (pixel) aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
#if FF_API_OLD_FILTER_OPTS
- { "sar_num", NULL, OFFSET(aspect_num), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
{ "sar_den", NULL, OFFSET(aspect_den), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
#endif
- { "sar", "sample (pixel) aspect ratio", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 1 }, 0, INT_MAX, FLAGS },
- { NULL },
+ { "max", "set max value for nominator or denominator in the ratio", OFFSET(max), AV_OPT_TYPE_INT, {.i64=100}, 1, INT_MAX, FLAGS },
+ { NULL }
};
-static const AVClass setsar_class = {
- .class_name = "setsar",
- .item_name = av_default_item_name,
- .option = setsar_options,
- .version = LIBAVUTIL_VERSION_INT,
-};
+AVFILTER_DEFINE_CLASS(setsar);
static const AVFilterPad avfilter_vf_setsar_inputs[] = {
{
@@ -192,11 +221,7 @@ static const AVFilterPad avfilter_vf_setsar_outputs[] = {
AVFilter avfilter_vf_setsar = {
.name = "setsar",
.description = NULL_IF_CONFIG_SMALL("Set the pixel sample aspect ratio."),
-
-#if FF_API_OLD_FILTER_OPTS
.init = init,
-#endif
-
.priv_size = sizeof(AspectContext),
.priv_class = &setsar_class,
@@ -204,4 +229,5 @@ AVFilter avfilter_vf_setsar = {
.outputs = avfilter_vf_setsar_outputs,
};
+
#endif /* CONFIG_SETSAR_FILTER */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 19:05:54 +0000