@@ -33,6 +33,7 @@
typedef struct FlipContext {
const AVClass *class;
int vsub; ///< vertical chroma subsampling
+ int bayer;
} FlipContext;
static const AVOption vflip_options[] = {
@@ -47,6 +48,7 @@ static int config_input(AVFilterLink *link)
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
flip->vsub = desc->log2_chroma_h;
+ flip->bayer = !!(desc->flags & AV_PIX_FMT_FLAG_BAYER);
return 0;
}
@@ -74,11 +76,44 @@ static AVFrame *get_video_buffer(AVFilterLink *link, int w, int h)
return frame;
}
+static int flip_bayer(AVFilterLink *link, AVFrame *in)
+{
+ AVFilterContext *ctx = link->dst;
+ AVFilterLink *outlink = ctx->outputs[0];
+ AVFrame *out;
+ uint8_t *inrow = in->data[0], *outrow;
+ int width, i, is16 = av_pix_fmt_desc_get(link->format)->comp[0].step > 1;
+ if (outlink->h & 1) {
+ av_log(ctx, AV_LOG_ERROR, "Bayer vertical flip needs even height\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ width = outlink->w << is16;
+ 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);
+ outrow = out->data[0] + out->linesize[0] * (outlink->h - 2);
+ for (i = 0; i < outlink->h >> 1; i++) {
+ memcpy(outrow, inrow, width);
+ memcpy(outrow + out->linesize[0], inrow + in->linesize[0], width);
+ inrow += 2 * in->linesize[0];
+ outrow -= 2 * out->linesize[0];
+ }
+ av_frame_free(&in);
+ return ff_filter_frame(outlink, out);
+}
+
static int filter_frame(AVFilterLink *link, AVFrame *frame)
{
FlipContext *flip = link->dst->priv;
int i;
+ if (flip->bayer)
+ return flip_bayer(link, frame);
+
for (i = 0; i < 4; i ++) {
int vsub = i == 1 || i == 2 ? flip->vsub : 0;
int height = AV_CEIL_RSHIFT(link->h, vsub);