ffmpeg roll of source to mar 9 version...

patched-ffmpeg-mt/libavcodec/vc1_asftorcv_bsf.c

 /*
  * copyright (c) 2010 Google Inc.
  *
  * 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.
  *
@@ skipping 68 matching lines @@
 
     ++ctx->frames;
     return 0;
 }
 
 AVBitStreamFilter vc1_asftorcv_bsf = {
     "vc1_asftorcv",
     sizeof(ASFTORCVBSFContext),
     asftorcv_filter,
 };
+/*
+ * copyright (c) 2010 Google Inc.
+ *
+ * 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 "avcodec.h"
+#include "bytestream.h"
+
+#define RCV_STREAM_HEADER_SIZE 36
+#define RCV_PICTURE_HEADER_SIZE 8
+
+typedef struct ASFTORCVBSFContext {
+    int frames;
+} ASFTORCVBSFContext;
+
+static int asftorcv_filter(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
+                          uint8_t **poutbuf, int *poutbuf_size,
+                          const uint8_t *buf, int buf_size, int keyframe){
+    ASFTORCVBSFContext* ctx = (ASFTORCVBSFContext*)bsfc->priv_data;
+
+    if (avctx->codec_id != CODEC_ID_WMV3) {
+        av_log(avctx, AV_LOG_ERROR, "Only WMV3 is accepted!\n");
+        return -1;
+    }
+
+    uint8_t* bs = NULL;
+    if (!ctx->frames) {
+        // Write the header if this is the first frame.
+        *poutbuf = av_malloc(RCV_STREAM_HEADER_SIZE + RCV_PICTURE_HEADER_SIZE + buf_size);
+        *poutbuf_size = RCV_STREAM_HEADER_SIZE + RCV_PICTURE_HEADER_SIZE + buf_size;
+        bs = *poutbuf;
+
+        // The following structure of stream header comes from libavformat/vc1testenc.c.
+        bytestream_put_le24(&bs, 0);  // Frame count. 0 for streaming.
+        bytestream_put_byte(&bs, 0xC5);
+        bytestream_put_le32(&bs, 4);  // 4 bytes of extra data.
+        bytestream_put_byte(&bs, avctx->extradata[0]);
+        bytestream_put_byte(&bs, avctx->extradata[1]);
+        bytestream_put_byte(&bs, avctx->extradata[2]);
+        bytestream_put_byte(&bs, avctx->extradata[3]);
+        bytestream_put_le32(&bs, avctx->height);
+        bytestream_put_le32(&bs, avctx->width);
+        bytestream_put_le32(&bs, 0xC);
+        bytestream_put_le24(&bs, 0);  // hrd_buffer
+        bytestream_put_byte(&bs, 0x80);  // level|cbr|res1
+        bytestream_put_le32(&bs, 0);  // hrd_rate
+
+        // The following LE32 describes the frame rate. Since we don't care so fill
+        // it with 0xFFFFFFFF which means variable framerate.
+        // See: libavformat/vc1testenc.c
+        bytestream_put_le32(&bs, 0xFFFFFFFF);
+    } else {
+        *poutbuf = av_malloc(RCV_PICTURE_HEADER_SIZE + buf_size);
+        *poutbuf_size = RCV_PICTURE_HEADER_SIZE + buf_size;
+        bs = *poutbuf;
+    }
+
+    // Write the picture header.
+    bytestream_put_le32(&bs, buf_size | (keyframe ? 0x80000000 : 0));
+
+    //  The following LE32 describes the pts. Since we don't care so fill it with 0.
+    bytestream_put_le32(&bs, 0);
+    memcpy(bs, buf, buf_size);
+
+    ++ctx->frames;
+    return 0;
+}
+
+AVBitStreamFilter vc1_asftorcv_bsf = {
+    "vc1_asftorcv",
+    sizeof(ASFTORCVBSFContext),
+    asftorcv_filter,
+};