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authorStefano Sabatini <stefasab@gmail.com>2012-05-18 19:41:44 +0200
committerStefano Sabatini <stefasab@gmail.com>2012-05-19 13:24:57 +0200
commit0e82d317ebfc1eda840bdb714c8ecb4630dae389 (patch)
tree9a502eb194106a0032f1b37f8f981452393d9da9 /libavfilter/f_split.c
parent150227e8edfcbd5ee30d9236a4d3618937447ed3 (diff)
downloadffmpeg-0e82d317ebfc1eda840bdb714c8ecb4630dae389.tar.gz
lavfi: rename vf_split.c -> f_split.c
The file now contains both an audio and a video split filter.
Diffstat (limited to 'libavfilter/f_split.c')
-rw-r--r--libavfilter/f_split.c138
1 files changed, 138 insertions, 0 deletions
diff --git a/libavfilter/f_split.c b/libavfilter/f_split.c
new file mode 100644
index 0000000000..2015980452
--- /dev/null
+++ b/libavfilter/f_split.c
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2007 Bobby Bingham
+ *
+ * This file is part of FFmpeg.
+ *
+ * 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.
+ *
+ * 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * audio and video splitter
+ */
+
+#include "avfilter.h"
+#include "audio.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 = !strcmp(ctx->name, "split") ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
+ 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 = (const 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}},
+};
+
+static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *samplesref)
+{
+ AVFilterContext *ctx = inlink->dst;
+ int i;
+
+ for (i = 0; i < ctx->output_count; i++)
+ ff_filter_samples(inlink->dst->outputs[i],
+ avfilter_ref_buffer(samplesref, ~AV_PERM_WRITE));
+}
+
+AVFilter avfilter_af_asplit = {
+ .name = "asplit",
+ .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
+
+ .init = split_init,
+ .uninit = split_uninit,
+
+ .inputs = (const AVFilterPad[]) {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .get_audio_buffer = ff_null_get_audio_buffer,
+ .filter_samples = filter_samples,
+ },
+ { .name = NULL }
+ },
+ .outputs = (const AVFilterPad[]) {{ .name = NULL }},
+};