*/
#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
#include "libavutil/avstring.h"
#include "libavutil/eval.h"
#include "libavutil/mathematics.h"
+#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libswscale/swscale.h"
-static const char *var_names[] = {
+static const char *const var_names[] = {
"PI",
"PHI",
"E",
char h_expr[256]; ///< height expression string
} ScaleContext;
-static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
+static av_cold int init(AVFilterContext *ctx, const char *args)
{
ScaleContext *scale = ctx->priv;
const char *p;
if (args) {
sscanf(args, "%255[^:]:%255[^:]", scale->w_expr, scale->h_expr);
p = strstr(args,"flags=");
- if (p) scale->flags = strtoul(p+6, NULL, 0);
+ if (p) {
+ const AVClass *class = sws_get_class();
+ const AVOption *o = av_opt_find(&class, "sws_flags", NULL, 0,
+ AV_OPT_SEARCH_FAKE_OBJ);
+ int ret = av_opt_eval_flags(&class, o, p + 6, &scale->flags);
+
+ if (ret < 0)
+ return ret;
+ }
}
return 0;
formats = NULL;
for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
if ( sws_isSupportedInput(pix_fmt)
- && (ret = avfilter_add_format(&formats, pix_fmt)) < 0) {
- avfilter_formats_unref(&formats);
+ && (ret = ff_add_format(&formats, pix_fmt)) < 0) {
+ ff_formats_unref(&formats);
return ret;
}
- avfilter_formats_ref(formats, &ctx->inputs[0]->out_formats);
+ ff_formats_ref(formats, &ctx->inputs[0]->out_formats);
}
if (ctx->outputs[0]) {
formats = NULL;
for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
if ( sws_isSupportedOutput(pix_fmt)
- && (ret = avfilter_add_format(&formats, pix_fmt)) < 0) {
- avfilter_formats_unref(&formats);
+ && (ret = ff_add_format(&formats, pix_fmt)) < 0) {
+ ff_formats_unref(&formats);
return ret;
}
- avfilter_formats_ref(formats, &ctx->outputs[0]->in_formats);
+ ff_formats_ref(formats, &ctx->outputs[0]->in_formats);
}
return 0;
outlink->h = h;
/* TODO: make algorithm configurable */
- av_log(ctx, AV_LOG_INFO, "w:%d h:%d fmt:%s -> w:%d h:%d fmt:%s flags:0x%0x\n",
+ av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d fmt:%s -> w:%d h:%d fmt:%s flags:0x%0x\n",
inlink ->w, inlink ->h, av_pix_fmt_descriptors[ inlink->format].name,
outlink->w, outlink->h, av_pix_fmt_descriptors[outlink->format].name,
scale->flags);
- scale->input_is_pal = av_pix_fmt_descriptors[inlink->format].flags & PIX_FMT_PAL;
+ scale->input_is_pal = av_pix_fmt_descriptors[inlink->format].flags & PIX_FMT_PAL ||
+ av_pix_fmt_descriptors[inlink->format].flags & PIX_FMT_PSEUDOPAL;
if (scale->sws)
sws_freeContext(scale->sws);
- scale->sws = sws_getContext(inlink ->w, inlink ->h, inlink ->format,
- outlink->w, outlink->h, outlink->format,
- scale->flags, NULL, NULL, NULL);
- if (!scale->sws)
- return AVERROR(EINVAL);
+ if (inlink->w == outlink->w && inlink->h == outlink->h &&
+ inlink->format == outlink->format)
+ scale->sws = NULL;
+ else {
+ scale->sws = sws_getContext(inlink ->w, inlink ->h, inlink ->format,
+ outlink->w, outlink->h, outlink->format,
+ scale->flags, NULL, NULL, NULL);
+ if (!scale->sws)
+ return AVERROR(EINVAL);
+ }
+
+
+ if (inlink->sample_aspect_ratio.num)
+ outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h*inlink->w,
+ outlink->w*inlink->h},
+ inlink->sample_aspect_ratio);
+ else
+ outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
return 0;
return ret;
}
-static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
+static int start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
{
ScaleContext *scale = link->dst->priv;
AVFilterLink *outlink = link->dst->outputs[0];
- AVFilterBufferRef *outpicref;
+ AVFilterBufferRef *outpicref, *for_next_filter;
+ int ret = 0;
+
+ if (!scale->sws) {
+ outpicref = avfilter_ref_buffer(picref, ~0);
+ if (!outpicref)
+ return AVERROR(ENOMEM);
+ return ff_start_frame(outlink, outpicref);
+ }
scale->hsub = av_pix_fmt_descriptors[link->format].log2_chroma_w;
scale->vsub = av_pix_fmt_descriptors[link->format].log2_chroma_h;
- outpicref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
+ outpicref = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
+ if (!outpicref)
+ return AVERROR(ENOMEM);
+
avfilter_copy_buffer_ref_props(outpicref, picref);
outpicref->video->w = outlink->w;
outpicref->video->h = outlink->h;
- outlink->out_buf = outpicref;
av_reduce(&outpicref->video->pixel_aspect.num, &outpicref->video->pixel_aspect.den,
(int64_t)picref->video->pixel_aspect.num * outlink->h * link->w,
INT_MAX);
scale->slice_y = 0;
- avfilter_start_frame(outlink, avfilter_ref_buffer(outpicref, ~0));
+ for_next_filter = avfilter_ref_buffer(outpicref, ~0);
+ if (for_next_filter)
+ ret = ff_start_frame(outlink, for_next_filter);
+ else
+ ret = AVERROR(ENOMEM);
+
+ if (ret < 0) {
+ avfilter_unref_bufferp(&outpicref);
+ return ret;
+ }
+
+ outlink->out_buf = outpicref;
+ return 0;
}
-static void draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
+static int draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
{
ScaleContext *scale = link->dst->priv;
- int out_h;
+ int out_h, ret;
AVFilterBufferRef *cur_pic = link->cur_buf;
const uint8_t *data[4];
+ if (!scale->sws) {
+ return ff_draw_slice(link->dst->outputs[0], y, h, slice_dir);
+ }
+
if (scale->slice_y == 0 && slice_dir == -1)
scale->slice_y = link->dst->outputs[0]->h;
if (slice_dir == -1)
scale->slice_y -= out_h;
- avfilter_draw_slice(link->dst->outputs[0], scale->slice_y, out_h, slice_dir);
+ ret = ff_draw_slice(link->dst->outputs[0], scale->slice_y, out_h, slice_dir);
if (slice_dir == 1)
scale->slice_y += out_h;
+ return ret;
}
AVFilter avfilter_vf_scale = {
.priv_size = sizeof(ScaleContext),
- .inputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .start_frame = start_frame,
- .draw_slice = draw_slice,
- .min_perms = AV_PERM_READ, },
- { .name = NULL}},
- .outputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .config_props = config_props, },
- { .name = NULL}},
+ .inputs = (const AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .start_frame = start_frame,
+ .draw_slice = draw_slice,
+ .min_perms = AV_PERM_READ, },
+ { .name = NULL}},
+ .outputs = (const AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_props, },
+ { .name = NULL}},
};
projects / ffmpeg / blobdiff