wrapped_avframe: Initial implementation

libavcodec/Makefile

@@ -472,6 +472,7 @@ OBJS-$(CONFIG_WMV2_ENCODER)            += wmv2enc.o wmv2.o \
                                           msmpeg4.o msmpeg4enc.o msmpeg4data.o
 OBJS-$(CONFIG_WNV1_DECODER)            += wnv1.o
 OBJS-$(CONFIG_WS_SND1_DECODER)         += ws-snd1.o
+OBJS-$(CONFIG_WRAPPED_AVFRAME_ENCODER) += wrapped_avframe.o
 OBJS-$(CONFIG_XAN_DPCM_DECODER)        += dpcm.o
 OBJS-$(CONFIG_XAN_WC3_DECODER)         += xan.o
 OBJS-$(CONFIG_XAN_WC4_DECODER)         += xxan.o

libavcodec/allcodecs.c

@@ -292,6 +292,7 @@ void avcodec_register_all(void)
     REGISTER_DECODER(VP9,               vp9);
     REGISTER_DECODER(VQA,               vqa);
     REGISTER_DECODER(WEBP,              webp);
+    REGISTER_ENCODER(WRAPPED_AVFRAME,   wrapped_avframe);
     REGISTER_ENCDEC (WMV1,              wmv1);
     REGISTER_ENCDEC (WMV2,              wmv2);
     REGISTER_DECODER(WMV3,              wmv3);

libavcodec/avcodec.h

@@ -477,6 +477,7 @@ enum AVCodecID {
     AV_CODEC_ID_MPEG4SYSTEMS = 0x20001, /**< _FAKE_ codec to indicate a MPEG-4 Systems
                                 * stream (only used by libavformat) */
     AV_CODEC_ID_FFMETADATA = 0x21000,   ///< Dummy codec for streams containing only metadata information.
+    AV_CODEC_ID_WRAPPED_AVFRAME = 0x21001, ///< Passthrough codec, AVFrames wrapped in AVPacket
 };
 
 /**

libavcodec/codec_desc.c

@@ -1169,6 +1169,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .long_name = NULL_IF_CONFIG_SMALL("Screenpresso"),
         .props     = AV_CODEC_PROP_LOSSLESS,
     },
+    {
+        .id        = AV_CODEC_ID_WRAPPED_AVFRAME,
+        .type      = AVMEDIA_TYPE_VIDEO,
+        .name      = "wrapped_avframe",
+        .long_name = NULL_IF_CONFIG_SMALL("AVFrame to AVPacket passthrough"),
+        .props     = AV_CODEC_PROP_LOSSLESS,
+    },
 
     /* image codecs */
     {

libavcodec/version.h

@@ -29,7 +29,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVCODEC_VERSION_MAJOR 57
-#define LIBAVCODEC_VERSION_MINOR  3
+#define LIBAVCODEC_VERSION_MINOR  4
 #define LIBAVCODEC_VERSION_MICRO  0
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

libavcodec/wrapped_avframe.c

+/*
+ * AVFrame wrapper
+ * Copyright (c) 2015 Luca Barbato
+ *
+ * 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
+ * Simple wrapper to store an AVFrame and forward it as AVPacket.
+ */
+
+#include "avcodec.h"
+#include "internal.h"
+
+#include "libavutil/internal.h"
+#include "libavutil/frame.h"
+#include "libavutil/buffer.h"
+#include "libavutil/pixdesc.h"
+
+static void wrapped_avframe_release_buffer(void *unused, uint8_t *data)
+{
+    AVFrame *frame = (AVFrame *)data;
+
+    av_frame_free(&frame);
+}
+
+static int wrapped_avframe_encode(AVCodecContext *avctx, AVPacket *pkt,
+                     const AVFrame *frame, int *got_packet)
+{
+    AVFrame *wrapped = av_frame_clone(frame);
+    int ret;
+
+    if (!wrapped)
+        return AVERROR(ENOMEM);
+
+    pkt->buf = av_buffer_create((uint8_t *)wrapped, sizeof(*wrapped),
+                                wrapped_avframe_release_buffer, NULL,
+                                AV_BUFFER_FLAG_READONLY);
+    if (!pkt->buf) {
+        av_frame_free(&wrapped);
+        return AVERROR(ENOMEM);
+    }
+
+    pkt->data = (uint8_t *)wrapped;
+    pkt->size = sizeof(*wrapped);
+
+    pkt->flags |= AV_PKT_FLAG_KEY;
+    *got_packet = 1;
+    return 0;
+}
+
+AVCodec ff_wrapped_avframe_encoder = {
+    .name           = "wrapped_avframe",
+    .long_name      = NULL_IF_CONFIG_SMALL("AVFrame to AVPacket passthrough"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_WRAPPED_AVFRAME,
+    .encode2        = wrapped_avframe_encode,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
+};