/*
* Copyright (c) 2010 Bobby Bingham
- * 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
*/
*/
#include "libavutil/mathematics.h"
+#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"
typedef struct {
- AVRational aspect;
+ AVRational ratio;
} AspectContext;
static av_cold int init(AVFilterContext *ctx, const char *args)
{
AspectContext *aspect = ctx->priv;
- double ratio;
- int64_t gcd;
- char c = 0;
+ aspect->ratio = (AVRational) {0, 1};
if (args) {
- if (sscanf(args, "%d:%d%c", &aspect->aspect.num, &aspect->aspect.den, &c) != 2)
- if (sscanf(args, "%lf%c", &ratio, &c) == 1)
- aspect->aspect = av_d2q(ratio, 100);
-
- if (c || aspect->aspect.num <= 0 || aspect->aspect.den <= 0) {
+ if (av_parse_ratio(&aspect->ratio, args, 100, 0, ctx) < 0 ||
+ aspect->ratio.num < 0 || aspect->ratio.den <= 0) {
av_log(ctx, AV_LOG_ERROR,
"Invalid string '%s' for aspect ratio.\n", args);
return AVERROR(EINVAL);
}
-
- gcd = av_gcd(FFABS(aspect->aspect.num), FFABS(aspect->aspect.den));
- if (gcd) {
- aspect->aspect.num /= gcd;
- aspect->aspect.den /= gcd;
- }
}
- if (aspect->aspect.den == 0)
- aspect->aspect = (AVRational) {0, 1};
-
- av_log(ctx, AV_LOG_VERBOSE, "a:%d/%d\n", aspect->aspect.num, aspect->aspect.den);
+ av_log(ctx, AV_LOG_VERBOSE, "a:%d/%d\n", aspect->ratio.num, aspect->ratio.den);
return 0;
}
-static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
+static int start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
{
AspectContext *aspect = link->dst->priv;
- picref->video->pixel_aspect = aspect->aspect;
- ff_start_frame(link->dst->outputs[0], picref);
+ picref->video->sample_aspect_ratio = aspect->ratio;
+ link->cur_buf = NULL;
+ return ff_start_frame(link->dst->outputs[0], picref);
}
#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->ratio;
- av_reduce(&aspect->aspect.num, &aspect->aspect.den,
- aspect->aspect.num * inlink->h,
- aspect->aspect.den * inlink->w, 100);
+ av_reduce(&aspect->ratio.num, &aspect->ratio.den,
+ aspect->ratio.num * inlink->h,
+ aspect->ratio.den * inlink->w, 100);
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, aspect->aspect.num, aspect->aspect.den);
+ inlink->w, inlink->h, dar.num, dar.den, aspect->ratio.num, aspect->ratio.den);
- inlink->sample_aspect_ratio = aspect->aspect;
+ inlink->sample_aspect_ratio = aspect->ratio;
return 0;
}
.priv_size = sizeof(AspectContext),
- .inputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .config_props = setdar_config_props,
- .get_video_buffer = ff_null_get_video_buffer,
- .start_frame = start_frame,
- .end_frame = ff_null_end_frame },
- { .name = NULL}},
-
- .outputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO, },
- { .name = NULL}},
+ .inputs = (const AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = setdar_config_props,
+ .get_video_buffer = ff_null_get_video_buffer,
+ .start_frame = start_frame,
+ .end_frame = ff_null_end_frame },
+ { .name = NULL}},
+
+ .outputs = (const AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO, },
+ { .name = NULL}},
};
#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;
- inlink->sample_aspect_ratio = aspect->aspect;
+ inlink->sample_aspect_ratio = aspect->ratio;
return 0;
}
.priv_size = sizeof(AspectContext),
- .inputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .config_props = setsar_config_props,
- .get_video_buffer = ff_null_get_video_buffer,
- .start_frame = start_frame,
- .end_frame = ff_null_end_frame },
- { .name = NULL}},
-
- .outputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO, },
- { .name = NULL}},
+ .inputs = (const AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = setsar_config_props,
+ .get_video_buffer = ff_null_get_video_buffer,
+ .start_frame = start_frame,
+ .end_frame = ff_null_end_frame },
+ { .name = NULL}},
+
+ .outputs = (const AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO, },
+ { .name = NULL}},
};
#endif /* CONFIG_SETSAR_FILTER */
projects / ffmpeg / blobdiff