* horizontal flip filter
*/
+#include <string.h>
+
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
#include "libavutil/pixdesc.h"
+#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/imgutils.h"
-typedef struct {
+typedef struct FlipContext {
int max_step[4]; ///< max pixel step for each plane, expressed as a number of bytes
- int hsub, vsub; ///< chroma subsampling
+ int planewidth[4]; ///< width of each plane
+ int planeheight[4]; ///< height of each plane
} FlipContext;
static int query_formats(AVFilterContext *ctx)
{
- static const enum PixelFormat pix_fmts[] = {
- PIX_FMT_RGB48BE, PIX_FMT_RGB48LE,
- PIX_FMT_BGR48BE, PIX_FMT_BGR48LE,
- PIX_FMT_ARGB, PIX_FMT_RGBA,
- PIX_FMT_ABGR, PIX_FMT_BGRA,
- PIX_FMT_RGB24, PIX_FMT_BGR24,
- PIX_FMT_RGB565BE, PIX_FMT_RGB565LE,
- PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
- PIX_FMT_RGB444BE, PIX_FMT_RGB444LE,
- PIX_FMT_BGR565BE, PIX_FMT_BGR565LE,
- PIX_FMT_BGR555BE, PIX_FMT_BGR555LE,
- PIX_FMT_BGR444BE, PIX_FMT_BGR444LE,
- PIX_FMT_GRAY16BE, PIX_FMT_GRAY16LE,
- PIX_FMT_YUV420P16LE, PIX_FMT_YUV420P16BE,
- PIX_FMT_YUV422P16LE, PIX_FMT_YUV422P16BE,
- PIX_FMT_YUV444P16LE, PIX_FMT_YUV444P16BE,
- PIX_FMT_YUV444P, PIX_FMT_YUV422P,
- PIX_FMT_YUV420P, PIX_FMT_YUV411P,
- PIX_FMT_YUV410P, PIX_FMT_YUV440P,
- PIX_FMT_YUVJ444P, PIX_FMT_YUVJ422P,
- PIX_FMT_YUVJ420P, PIX_FMT_YUVJ440P,
- PIX_FMT_YUVA420P,
- PIX_FMT_RGB8, PIX_FMT_BGR8,
- PIX_FMT_RGB4_BYTE, PIX_FMT_BGR4_BYTE,
- PIX_FMT_PAL8, PIX_FMT_GRAY8,
- PIX_FMT_NONE
- };
-
- ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
- return 0;
+ AVFilterFormats *pix_fmts = NULL;
+ int fmt;
+
+ for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
+ if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
+ desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ||
+ (desc->log2_chroma_w != desc->log2_chroma_h &&
+ desc->comp[0].plane == desc->comp[1].plane)))
+ ff_add_format(&pix_fmts, fmt);
+ }
+
+ return ff_set_common_formats(ctx, pix_fmts);
}
static int config_props(AVFilterLink *inlink)
{
- FlipContext *flip = inlink->dst->priv;
- const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
+ FlipContext *s = inlink->dst->priv;
+ const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
+ const int hsub = pix_desc->log2_chroma_w;
+ const int vsub = pix_desc->log2_chroma_h;
- av_image_fill_max_pixsteps(flip->max_step, NULL, pix_desc);
- flip->hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
- flip->vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
+ av_image_fill_max_pixsteps(s->max_step, NULL, pix_desc);
+ s->planewidth[0] = s->planewidth[3] = inlink->w;
+ s->planewidth[1] = s->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, hsub);
+ s->planeheight[0] = s->planeheight[3] = inlink->h;
+ s->planeheight[1] = s->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, vsub);
return 0;
}
-static int start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
-{
- AVFilterLink *outlink = inlink->dst->outputs[0];
-
- outlink->out_buf =
- ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
- avfilter_copy_buffer_ref_props(outlink->out_buf, picref);
+typedef struct ThreadData {
+ AVFrame *in, *out;
+} ThreadData;
- /* copy palette if required */
- if (av_pix_fmt_descriptors[inlink->format].flags & PIX_FMT_PAL)
- memcpy(inlink->dst->outputs[0]->out_buf->data[1], picref->data[1], AVPALETTE_SIZE);
-
- return ff_start_frame(outlink, avfilter_ref_buffer(outlink->out_buf, ~0));
-}
-
-static int draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
+static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
{
- FlipContext *flip = inlink->dst->priv;
- AVFilterBufferRef *inpic = inlink->cur_buf;
- AVFilterBufferRef *outpic = inlink->dst->outputs[0]->out_buf;
+ FlipContext *s = ctx->priv;
+ ThreadData *td = arg;
+ AVFrame *in = td->in;
+ AVFrame *out = td->out;
uint8_t *inrow, *outrow;
- int i, j, plane, step, hsub, vsub;
+ int i, j, plane, step;
- for (plane = 0; plane < 4 && inpic->data[plane]; plane++) {
- step = flip->max_step[plane];
- hsub = (plane == 1 || plane == 2) ? flip->hsub : 0;
- vsub = (plane == 1 || plane == 2) ? flip->vsub : 0;
+ for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
+ const int width = s->planewidth[plane];
+ const int height = s->planeheight[plane];
+ const int start = (height * job ) / nb_jobs;
+ const int end = (height * (job+1)) / nb_jobs;
- outrow = outpic->data[plane] + (y>>vsub) * outpic->linesize[plane];
- inrow = inpic ->data[plane] + (y>>vsub) * inpic ->linesize[plane] + ((inlink->w >> hsub) - 1) * step;
- for (i = 0; i < h>>vsub; i++) {
+ step = s->max_step[plane];
+
+ outrow = out->data[plane] + start * out->linesize[plane];
+ inrow = in ->data[plane] + start * in->linesize[plane] + (width - 1) * step;
+ for (i = start; i < end; i++) {
switch (step) {
case 1:
- for (j = 0; j < (inlink->w >> hsub); j++)
+ for (j = 0; j < width; j++)
outrow[j] = inrow[-j];
break;
{
uint16_t *outrow16 = (uint16_t *)outrow;
uint16_t * inrow16 = (uint16_t *) inrow;
- for (j = 0; j < (inlink->w >> hsub); j++)
+ for (j = 0; j < width; j++)
outrow16[j] = inrow16[-j];
}
break;
{
uint8_t *in = inrow;
uint8_t *out = outrow;
- for (j = 0; j < (inlink->w >> hsub); j++, out += 3, in -= 3) {
+ for (j = 0; j < width; j++, out += 3, in -= 3) {
int32_t v = AV_RB24(in);
AV_WB24(out, v);
}
{
uint32_t *outrow32 = (uint32_t *)outrow;
uint32_t * inrow32 = (uint32_t *) inrow;
- for (j = 0; j < (inlink->w >> hsub); j++)
+ for (j = 0; j < width; j++)
outrow32[j] = inrow32[-j];
}
break;
default:
- for (j = 0; j < (inlink->w >> hsub); j++)
+ for (j = 0; j < width; j++)
memcpy(outrow + j*step, inrow - j*step, step);
}
- inrow += inpic ->linesize[plane];
- outrow += outpic->linesize[plane];
+ inrow += in ->linesize[plane];
+ outrow += out->linesize[plane];
}
}
- return ff_draw_slice(inlink->dst->outputs[0], y, h, slice_dir);
+ return 0;
}
-AVFilter avfilter_vf_hflip = {
- .name = "hflip",
- .description = NULL_IF_CONFIG_SMALL("Horizontally flip the input video."),
- .priv_size = sizeof(FlipContext),
- .query_formats = query_formats,
+static int filter_frame(AVFilterLink *inlink, AVFrame *in)
+{
+ AVFilterContext *ctx = inlink->dst;
+ AVFilterLink *outlink = ctx->outputs[0];
+ ThreadData td;
+ AVFrame *out;
+
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out) {
+ av_frame_free(&in);
+ return AVERROR(ENOMEM);
+ }
+ av_frame_copy_props(out, in);
+
+ /* copy palette if required */
+ if (av_pix_fmt_desc_get(inlink->format)->flags & AV_PIX_FMT_FLAG_PAL)
+ memcpy(out->data[1], in->data[1], AVPALETTE_SIZE);
+
+ td.in = in, td.out = out;
+ ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h, ctx->graph->nb_threads));
+
+ av_frame_free(&in);
+ return ff_filter_frame(outlink, out);
+}
+
+static const AVFilterPad avfilter_vf_hflip_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ .config_props = config_props,
+ },
+ { NULL }
+};
- .inputs = (const AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .start_frame = start_frame,
- .draw_slice = draw_slice,
- .config_props = config_props,
- .min_perms = AV_PERM_READ, },
- { .name = NULL}},
- .outputs = (const AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO, },
- { .name = NULL}},
+static const AVFilterPad avfilter_vf_hflip_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_hflip = {
+ .name = "hflip",
+ .description = NULL_IF_CONFIG_SMALL("Horizontally flip the input video."),
+ .priv_size = sizeof(FlipContext),
+ .query_formats = query_formats,
+ .inputs = avfilter_vf_hflip_inputs,
+ .outputs = avfilter_vf_hflip_outputs,
+ .flags = AVFILTER_FLAG_SLICE_THREADS,
};