lavfi: rename vf_split.c to split.c

This is in preparation for adding an audio split filter.

1 files changed, 108 insertions, 0 deletions

diff --git a/libavfilter/split.c b/libavfilter/split.c
new file mode 100644
index 0000000000..da6b3ff320
--- /dev/null
+++ b/libavfilter/split.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2007 Bobby Bingham
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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,
+ * 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Video splitter
+ */
+
+#include "avfilter.h"
+
+static int split_init(AVFilterContext *ctx, const char *args, void *opaque)
+{
+    int i, nb_outputs = 2;
+
+    if (args) {
+        nb_outputs = strtol(args, NULL, 0);
+        if (nb_outputs <= 0) {
+            av_log(ctx, AV_LOG_ERROR, "Invalid number of outputs specified: %d.\n",
+                   nb_outputs);
+            return AVERROR(EINVAL);
+        }
+    }
+
+    for (i = 0; i < nb_outputs; i++) {
+        char name[32];
+        AVFilterPad pad = { 0 };
+
+        snprintf(name, sizeof(name), "output%d", i);
+        pad.type = AVMEDIA_TYPE_VIDEO;
+        pad.name = av_strdup(name);
+
+        avfilter_insert_outpad(ctx, i, &pad);
+    }
+
+    return 0;
+}
+
+static void split_uninit(AVFilterContext *ctx)
+{
+    int i;
+
+    for (i = 0; i < ctx->output_count; i++)
+        av_freep(&ctx->output_pads[i].name);
+}
+
+static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
+{
+    AVFilterContext *ctx = inlink->dst;
+    int i;
+
+    for (i = 0; i < ctx->output_count; i++)
+        avfilter_start_frame(ctx->outputs[i],
+                             avfilter_ref_buffer(picref, ~AV_PERM_WRITE));
+}
+
+static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
+{
+    AVFilterContext *ctx = inlink->dst;
+    int i;
+
+    for (i = 0; i < ctx->output_count; i++)
+        avfilter_draw_slice(ctx->outputs[i], y, h, slice_dir);
+}
+
+static void end_frame(AVFilterLink *inlink)
+{
+    AVFilterContext *ctx = inlink->dst;
+    int i;
+
+    for (i = 0; i < ctx->output_count; i++)
+        avfilter_end_frame(ctx->outputs[i]);
+
+    avfilter_unref_buffer(inlink->cur_buf);
+}
+
+AVFilter avfilter_vf_split = {
+    .name      = "split",
+    .description = NULL_IF_CONFIG_SMALL("Pass on the input to two outputs."),
+
+    .init   = split_init,
+    .uninit = split_uninit,
+
+    .inputs    = (AVFilterPad[]) {{ .name            = "default",
+                                    .type            = AVMEDIA_TYPE_VIDEO,
+                                    .get_video_buffer= avfilter_null_get_video_buffer,
+                                    .start_frame     = start_frame,
+                                    .draw_slice      = draw_slice,
+                                    .end_frame       = end_frame, },
+                                  { .name = NULL}},
+    .outputs   = (AVFilterPad[]) {{ .name = NULL}},
+};