making act segmenter

1 files changed, 167 insertions, 0 deletions

diff --git a/ffmpeg/libavfilter/buffer.c b/ffmpeg/libavfilter/buffer.c
new file mode 100644
index 0000000..29fedc4
--- /dev/null
+++ b/ffmpeg/libavfilter/buffer.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright Stefano Sabatini <stefasab gmail com>
+ * Copyright Anton Khirnov <anton khirnov net>
+ * Copyright Michael Niedermayer <michaelni gmx at>
+ *
+ * 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
+ */
+
+#include "libavutil/channel_layout.h"
+#include "libavutil/avassert.h"
+#include "libavutil/common.h"
+#include "libavutil/imgutils.h"
+#include "libavcodec/avcodec.h"
+
+#include "avfilter.h"
+#include "internal.h"
+#include "audio.h"
+#include "avcodec.h"
+
+void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr)
+{
+    if (ptr->extended_data != ptr->data)
+        av_freep(&ptr->extended_data);
+    av_free(ptr->data[0]);
+    av_free(ptr);
+}
+
+static void copy_video_props(AVFilterBufferRefVideoProps *dst, AVFilterBufferRefVideoProps *src) {
+    *dst = *src;
+    if (src->qp_table) {
+        int qsize = src->qp_table_size;
+        dst->qp_table = av_malloc(qsize);
+        memcpy(dst->qp_table, src->qp_table, qsize);
+    }
+}
+
+AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
+{
+    AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
+    if (!ret)
+        return NULL;
+    *ret = *ref;
+
+    ret->metadata = NULL;
+    av_dict_copy(&ret->metadata, ref->metadata, 0);
+
+    if (ref->type == AVMEDIA_TYPE_VIDEO) {
+        ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
+        if (!ret->video) {
+            av_free(ret);
+            return NULL;
+        }
+        copy_video_props(ret->video, ref->video);
+        ret->extended_data = ret->data;
+    } else if (ref->type == AVMEDIA_TYPE_AUDIO) {
+        ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps));
+        if (!ret->audio) {
+            av_free(ret);
+            return NULL;
+        }
+        *ret->audio = *ref->audio;
+
+        if (ref->extended_data && ref->extended_data != ref->data) {
+            int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
+            if (!(ret->extended_data = av_malloc(sizeof(*ret->extended_data) *
+                                                 nb_channels))) {
+                av_freep(&ret->audio);
+                av_freep(&ret);
+                return NULL;
+            }
+            memcpy(ret->extended_data, ref->extended_data,
+                   sizeof(*ret->extended_data) * nb_channels);
+        } else
+            ret->extended_data = ret->data;
+    }
+    ret->perms &= pmask;
+    ret->buf->refcount ++;
+    return ret;
+}
+
+void avfilter_unref_buffer(AVFilterBufferRef *ref)
+{
+    if (!ref)
+        return;
+    av_assert0(ref->buf->refcount > 0);
+    if (!(--ref->buf->refcount))
+        ref->buf->free(ref->buf);
+    if (ref->extended_data != ref->data)
+        av_freep(&ref->extended_data);
+    if (ref->video)
+        av_freep(&ref->video->qp_table);
+    av_freep(&ref->video);
+    av_freep(&ref->audio);
+    av_dict_free(&ref->metadata);
+    av_free(ref);
+}
+
+void avfilter_unref_bufferp(AVFilterBufferRef **ref)
+{
+    avfilter_unref_buffer(*ref);
+    *ref = NULL;
+}
+
+int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
+{
+    dst->pts    = src->pts;
+    dst->pos    = av_frame_get_pkt_pos(src);
+    dst->format = src->format;
+
+    av_dict_free(&dst->metadata);
+    av_dict_copy(&dst->metadata, av_frame_get_metadata(src), 0);
+
+    switch (dst->type) {
+    case AVMEDIA_TYPE_VIDEO:
+        dst->video->w                   = src->width;
+        dst->video->h                   = src->height;
+        dst->video->sample_aspect_ratio = src->sample_aspect_ratio;
+        dst->video->interlaced          = src->interlaced_frame;
+        dst->video->top_field_first     = src->top_field_first;
+        dst->video->key_frame           = src->key_frame;
+        dst->video->pict_type           = src->pict_type;
+        break;
+    case AVMEDIA_TYPE_AUDIO:
+        dst->audio->sample_rate         = src->sample_rate;
+        dst->audio->channel_layout      = src->channel_layout;
+        break;
+    default:
+        return AVERROR(EINVAL);
+    }
+
+    return 0;
+}
+
+void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src)
+{
+    // copy common properties
+    dst->pts             = src->pts;
+    dst->pos             = src->pos;
+
+    switch (src->type) {
+    case AVMEDIA_TYPE_VIDEO: {
+        if (dst->video->qp_table)
+            av_freep(&dst->video->qp_table);
+        copy_video_props(dst->video, src->video);
+        break;
+    }
+    case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
+    default: break;
+    }
+
+    av_dict_free(&dst->metadata);
+    av_dict_copy(&dst->metadata, src->metadata, 0);
+}