Rename directories, move files (step 1 of 2) (does not compile)

Tis drops the silly lib prefixes, and attempts to organize the tree in
a more logical way. Make the top-level directory less cluttered as
well.

Renames the following directories:
    libaf -> audio/filter
    libao2 -> audio/out
    libvo -> video/out
    libmpdemux -> demux

Split libmpcodecs:
    vf* -> video/filter
    vd*, dec_video.* -> video/decode
    mp_image*, img_format*, ... -> video/
    ad*, dec_audio.* -> audio/decode

libaf/format.* is moved to audio/ - this is similar to how mp_image.*
is located in video/.

Move most top-level .c/.h files to core. (talloc.c/.h is left on top-
level, because it's external.) Park some of the more annoying files
in compat/. Some of these are relicts from the time mplayer used
ffmpeg internals.

sub/ is not split, because it's too much of a mess (subtitle code is
mixed with OSD display and rendering).

Maybe the organization of core is not ideal: it mixes playback core
(like mplayer.c) and utility helpers (like bstr.c/h). Should the need
arise, the playback core will be moved somewhere else, while core
contains all helper and common code.

1 files changed, 717 insertions, 0 deletions

diff --git a/demux/asfheader.c b/demux/asfheader.c
new file mode 100644
index 0000000000..bd775b7660
--- /dev/null
+++ b/demux/asfheader.c
@@ -0,0 +1,717 @@
+/*
+ * This file is part of MPlayer.
+ *
+ * MPlayer is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * MPlayer 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+// .asf fileformat docs from http://divx.euro.ru
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <libavutil/intreadwrite.h>
+#include <libavutil/common.h>
+
+#include "config.h"
+#include "mp_msg.h"
+
+#include "stream/stream.h"
+#include "aviprint.h"
+#include "demuxer.h"
+#include "stheader.h"
+
+#include "asf.h"
+#include "asfguid.h"
+#include "asfheader.h"
+
+typedef struct {
+  // must be 0 for metadata record, might be non-zero for metadata lib record
+  uint16_t lang_list_index;
+  uint16_t stream_num;
+  uint16_t name_length;
+  uint16_t data_type;
+  uint32_t data_length;
+  uint16_t* name;
+  void* data;
+} ASF_meta_record_t;
+
+static char* get_ucs2str(const uint16_t* inbuf, uint16_t inlen)
+{
+  char* outbuf = calloc(inlen, 2);
+  char* q;
+  int i;
+
+  if (!outbuf) {
+    mp_tmsg(MSGT_HEADER, MSGL_ERR, "Memory allocation failed.\n");
+    return NULL;
+  }
+  q = outbuf;
+  for (i = 0; i < inlen / 2; i++) {
+    uint8_t tmp;
+    PUT_UTF8(AV_RL16(&inbuf[i]), tmp, *q++ = tmp;)
+  }
+  return outbuf;
+}
+
+static const char* asf_chunk_type(unsigned char* guid) {
+  static char tmp[60];
+  char *p;
+  int i;
+
+  switch(ASF_LOAD_GUID_PREFIX(guid)){
+    case ASF_GUID_PREFIX_audio_stream:
+      return "guid_audio_stream";
+    case ASF_GUID_PREFIX_ext_audio_stream:
+      return "guid_ext_audio_stream";
+    case ASF_GUID_PREFIX_ext_stream_embed_stream_header:
+      return "guid_ext_stream_embed_stream_header";
+    case ASF_GUID_PREFIX_video_stream:
+      return "guid_video_stream";
+    case ASF_GUID_PREFIX_audio_conceal_none:
+      return "guid_audio_conceal_none";
+    case ASF_GUID_PREFIX_audio_conceal_interleave:
+      return "guid_audio_conceal_interleave";
+    case ASF_GUID_PREFIX_header:
+      return "guid_header";
+    case ASF_GUID_PREFIX_data_chunk:
+      return "guid_data_chunk";
+    case ASF_GUID_PREFIX_index_chunk:
+      return "guid_index_chunk";
+    case ASF_GUID_PREFIX_stream_header:
+      return "guid_stream_header";
+    case ASF_GUID_PREFIX_header_2_0:
+      return "guid_header_2_0";
+    case ASF_GUID_PREFIX_file_header:
+      return "guid_file_header";
+    case ASF_GUID_PREFIX_content_desc:
+      return "guid_content_desc";
+    case ASF_GUID_PREFIX_dvr_ms_timing_rep_data:
+      return "guid_dvr_ms_timing_rep_data";
+    case ASF_GUID_PREFIX_dvr_ms_vid_frame_rep_data:
+      return "guid_dvr_ms_vid_frame_rep_data";
+    default:
+      strcpy(tmp, "unknown guid ");
+      p = tmp + strlen(tmp);
+      for (i = 0; i < 16; i++) {
+	if ((1 << i) & ((1<<4) | (1<<6) | (1<<8))) *p++ = '-';
+	sprintf(p, "%02x", guid[i]);
+	p += 2;
+      }
+      return tmp;
+  }
+}
+
+int asf_check_header(demuxer_t *demuxer){
+  unsigned char asfhdrguid[16]={0x30,0x26,0xB2,0x75,0x8E,0x66,0xCF,0x11,0xA6,0xD9,0x00,0xAA,0x00,0x62,0xCE,0x6C};
+  struct asf_priv* asf = calloc(1,sizeof(*asf));
+  asf->scrambling_h=asf->scrambling_w=asf->scrambling_b=1;
+  stream_read(demuxer->stream,(char*) &asf->header,sizeof(asf->header)); // header obj
+  le2me_ASF_header_t(&asf->header);			// swap to machine endian
+//  for(i=0;i<16;i++) printf(" %02X",temp[i]);printf("\n");
+//  for(i=0;i<16;i++) printf(" %02X",asfhdrguid[i]);printf("\n");
+  if(memcmp(asfhdrguid,asf->header.objh.guid,16)){
+    mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: not ASF guid!\n");
+    free(asf);
+    return 0; // not ASF guid
+  }
+  if(asf->header.cno>256){
+    mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: invalid subchunks_no %d\n",(int) asf->header.cno);
+    free(asf);
+    return 0; // invalid header???
+  }
+  demuxer->priv = asf;
+  return DEMUXER_TYPE_ASF;
+}
+
+static int get_ext_stream_properties(char *buf, int buf_len, int stream_num, struct asf_priv* asf, int is_video)
+{
+  int pos=0;
+  uint8_t *buffer = &buf[0];
+  uint64_t avg_ft av_unused;
+  unsigned bitrate;
+
+  while ((pos = find_asf_guid(buf, asf_ext_stream_header, pos, buf_len)) >= 0) {
+    int this_stream_num, stnamect, payct, i;
+    int buf_max_index=pos+50;
+    if (buf_max_index > buf_len) return 0;
+    buffer = &buf[pos];
+
+    // the following info is available
+    // some of it may be useful but we're skipping it for now
+    // starttime(8 bytes), endtime(8),
+    // leak-datarate(4), bucket-datasize(4), init-bucket-fullness(4),
+    // alt-leak-datarate(4), alt-bucket-datasize(4), alt-init-bucket-fullness(4),
+    // max-object-size(4),
+    // flags(4) (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
+
+    buffer += 8+8;
+    bitrate = AV_RL32(buffer);
+    buffer += 8*4;
+    this_stream_num=AV_RL16(buffer);buffer+=2;
+
+    if (this_stream_num == stream_num) {
+      buf_max_index+=14;
+      if (buf_max_index > buf_len) return 0;
+      buffer+=2; //skip stream-language-id-index
+      avg_ft = AV_RL64(buffer); // provided in 100ns units
+      buffer+=8;
+      asf->bps = bitrate / 8;
+
+      // after this are values for stream-name-count and
+      // payload-extension-system-count
+      // followed by associated info for each
+      stnamect = AV_RL16(buffer);buffer+=2;
+      payct = AV_RL16(buffer);buffer+=2;
+
+      // need to read stream names if present in order
+      // to get lengths - values are ignored for now
+      for (i=0; i<stnamect; i++) {
+        int stream_name_len;
+        buf_max_index+=4;
+        if (buf_max_index > buf_len) return 0;
+        buffer+=2; //language_id_index
+        stream_name_len = AV_RL16(buffer);buffer+=2;
+        buffer+=stream_name_len; //stream_name
+        buf_max_index+=stream_name_len;
+        if (buf_max_index > buf_len) return 0;
+      }
+
+      if (is_video) {
+        asf->vid_repdata_count = payct;
+        asf->vid_repdata_sizes = malloc(payct*sizeof(int));
+      } else {
+        asf->aud_repdata_count = payct;
+        asf->aud_repdata_sizes = malloc(payct*sizeof(int));
+      }
+
+      for (i=0; i<payct; i++) {
+        int payload_len;
+        buf_max_index+=22;
+        if (buf_max_index > buf_len) return 0;
+        // Each payload extension definition starts with a GUID.
+        // In dvr-ms files one of these indicates the presence an
+        // extension that contains pts values and this is always present
+        // in the video and audio streams.
+        // Another GUID indicates the presence of an extension
+        // that contains useful video frame demuxing information.
+        // Note that the extension data in each packet does not contain
+        // these GUIDs and that this header section defines the order the data
+        // will appear in.
+        if (memcmp(buffer, asf_dvr_ms_timing_rep_data, 16) == 0) {
+          if (is_video)
+            asf->vid_ext_timing_index = i;
+          else
+            asf->aud_ext_timing_index = i;
+        } else if (is_video && memcmp(buffer, asf_dvr_ms_vid_frame_rep_data, 16) == 0)
+          asf->vid_ext_frame_index = i;
+        buffer+=16;
+
+        payload_len = AV_RL16(buffer);buffer+=2;
+
+        if (is_video)
+          asf->vid_repdata_sizes[i] = payload_len;
+        else
+          asf->aud_repdata_sizes[i] = payload_len;
+        buffer+=4;//sys_len
+      }
+
+      return 1;
+    }
+  }
+  return 1;
+}
+
+#define CHECKDEC(l, n) if (((l) -= (n)) < 0) return 0
+static char* read_meta_record(ASF_meta_record_t* dest, char* buf,
+    int* buf_len)
+{
+  CHECKDEC(*buf_len, 2 + 2 + 2 + 2 + 4);
+  dest->lang_list_index = AV_RL16(buf);
+  dest->stream_num = AV_RL16(&buf[2]);
+  dest->name_length = AV_RL16(&buf[4]);
+  dest->data_type = AV_RL16(&buf[6]);
+  dest->data_length = AV_RL32(&buf[8]);
+  buf += 2 + 2 + 2 + 2 + 4;
+  CHECKDEC(*buf_len, dest->name_length);
+  dest->name = (uint16_t*)buf;
+  buf += dest->name_length;
+  CHECKDEC(*buf_len, dest->data_length);
+  dest->data = buf;
+  buf += dest->data_length;
+  return buf;
+}
+
+static int get_meta(char *buf, int buf_len, int this_stream_num,
+    float* asp_ratio)
+{
+  int pos = 0;
+  uint16_t records_count;
+  uint16_t x = 0, y = 0;
+
+  if ((pos = find_asf_guid(buf, asf_metadata_header, pos, buf_len)) < 0)
+    return 0;
+
+  CHECKDEC(buf_len, pos);
+  buf += pos;
+  CHECKDEC(buf_len, 2);
+  records_count = AV_RL16(buf);
+  buf += 2;
+
+  while (records_count--) {
+    ASF_meta_record_t record_entry;
+    char* name;
+
+    if (!(buf = read_meta_record(&record_entry, buf, &buf_len)))
+        return 0;
+    /* reserved, must be zero */
+    if (record_entry.lang_list_index)
+      continue;
+    /* match stream number: 0 to match all */
+    if (record_entry.stream_num && record_entry.stream_num != this_stream_num)
+      continue;
+    if (!(name = get_ucs2str(record_entry.name, record_entry.name_length))) {
+      mp_tmsg(MSGT_HEADER, MSGL_ERR, "Memory allocation failed.\n");
+      continue;
+    }
+    if (strcmp(name, "AspectRatioX") == 0)
+      x = AV_RL16(record_entry.data);
+    else if (strcmp(name, "AspectRatioY") == 0)
+      y = AV_RL16(record_entry.data);
+    free(name);
+  }
+  if (x && y) {
+    *asp_ratio = (float)x / (float)y;
+    return 1;
+  }
+  return 0;
+}
+
+static int is_drm(char* buf, int buf_len)
+{
+  uint32_t data_len, type_len, key_len, url_len;
+  int pos = find_asf_guid(buf, asf_content_encryption, 0, buf_len);
+
+  if (pos < 0)
+    return 0;
+
+  CHECKDEC(buf_len, pos + 4);
+  buf += pos;
+  data_len = AV_RL32(buf);
+  buf += 4;
+  CHECKDEC(buf_len, data_len);
+  buf += data_len;
+  type_len = AV_RL32(buf);
+  if (type_len < 4)
+    return 0;
+  CHECKDEC(buf_len, 4 + type_len + 4);
+  buf += 4;
+
+  if (buf[0] != 'D' || buf[1] != 'R' || buf[2] != 'M' || buf[3] != '\0')
+    return 0;
+
+  buf += type_len;
+  key_len = AV_RL32(buf);
+  CHECKDEC(buf_len, key_len + 4);
+  buf += 4;
+
+  buf[key_len - 1] = '\0';
+  mp_msg(MSGT_HEADER, MSGL_V, "DRM Key ID: %s\n", buf);
+
+  buf += key_len;
+  url_len = AV_RL32(buf);
+  CHECKDEC(buf_len, url_len);
+  buf += 4;
+
+  buf[url_len - 1] = '\0';
+  mp_tmsg(MSGT_HEADER, MSGL_INFO, "DRM License URL: %s\n", buf);
+  return 1;
+}
+
+static int asf_init_audio_stream(demuxer_t *demuxer,struct asf_priv* asf, sh_audio_t* sh_audio, ASF_stream_header_t *streamh, int *ppos, uint8_t** buf, char *hdr, unsigned int hdr_len)
+{
+  uint8_t *buffer = *buf;
+  int pos = *ppos;
+
+  sh_audio->wf=calloc(FFMAX(streamh->type_size, sizeof(*sh_audio->wf)), 1);
+  memcpy(sh_audio->wf,buffer,streamh->type_size);
+  le2me_WAVEFORMATEX(sh_audio->wf);
+  sh_audio->format=sh_audio->wf->wFormatTag;
+  if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_wave_header(sh_audio->wf,MSGL_V);
+  if(ASF_LOAD_GUID_PREFIX(streamh->concealment)==ASF_GUID_PREFIX_audio_conceal_interleave){
+    buffer = &hdr[pos];
+    pos += streamh->stream_size;
+    if (pos > hdr_len) return 0;
+    asf->scrambling_h=buffer[0];
+    asf->scrambling_w=(buffer[2]<<8)|buffer[1];
+    asf->scrambling_b=(buffer[4]<<8)|buffer[3];
+    if(asf->scrambling_b>0){
+      asf->scrambling_w/=asf->scrambling_b;
+    }
+  } else {
+    asf->scrambling_b=asf->scrambling_h=asf->scrambling_w=1;
+  }
+  mp_msg(MSGT_HEADER,MSGL_V,"ASF: audio scrambling: %d x %d x %d\n",asf->scrambling_h,asf->scrambling_w,asf->scrambling_b);
+  return 1;
+}
+
+static int find_backwards_asf_guid(char *buf, const char *guid, int cur_pos)
+{
+  int i;
+  for (i=cur_pos-16; i>0; i--) {
+    if (memcmp(&buf[i], guid, 16) == 0)
+      return i + 16 + 8; // point after guid + length
+  }
+  return -1;
+}
+
+int read_asf_header(demuxer_t *demuxer,struct asf_priv* asf){
+  int hdr_len = asf->header.objh.size - sizeof(asf->header);
+  int hdr_skip = 0;
+  char *hdr = NULL;
+  char guid_buffer[16];
+  int pos, start = stream_tell(demuxer->stream);
+  uint32_t* streams = NULL;
+  int audio_streams=0;
+  int video_streams=0;
+  uint16_t stream_count=0;
+  int best_video = -1;
+  int best_audio = -1;
+  uint64_t data_len;
+  ASF_stream_header_t *streamh;
+  uint8_t *buffer;
+  int audio_pos=0;
+
+  if(hdr_len < 0) {
+    mp_msg(MSGT_HEADER, MSGL_FATAL, "Header size is too small.\n");
+    return 0;
+  }
+
+  if (hdr_len > 1024 * 1024) {
+    mp_tmsg(MSGT_HEADER, MSGL_ERR, "FATAL: header size bigger than 1 MB (%d)!\nPlease contact MPlayer authors, and upload/send this file.\n",
+			hdr_len);
+    hdr_skip = hdr_len - 1024 * 1024;
+    hdr_len = 1024 * 1024;
+  }
+  hdr = malloc(hdr_len);
+  if (!hdr) {
+    mp_tmsg(MSGT_HEADER, MSGL_FATAL, "Could not allocate %d bytes for header.\n",
+            hdr_len);
+    return 0;
+  }
+  stream_read(demuxer->stream, hdr, hdr_len);
+  if (hdr_skip)
+    stream_skip(demuxer->stream, hdr_skip);
+  if (stream_eof(demuxer->stream)) {
+    mp_tmsg(MSGT_HEADER, MSGL_FATAL, "EOF while reading ASF header, broken/incomplete file?\n");
+    goto err_out;
+  }
+
+  if (is_drm(hdr, hdr_len))
+    mp_tmsg(MSGT_HEADER, MSGL_FATAL, "This file has been encumbered with DRM encryption, it will not play in MPlayer!\n");
+
+  if ((pos = find_asf_guid(hdr, asf_ext_stream_audio, 0, hdr_len)) >= 0)
+  {
+    // Special case: found GUID for dvr-ms audio.
+    // Now skip back to associated stream header.
+    int sh_pos=0;
+
+    sh_pos = find_backwards_asf_guid(hdr, asf_stream_header_guid, pos);
+
+    if (sh_pos > 0) {
+      sh_audio_t *sh_audio;
+
+       mp_msg(MSGT_HEADER, MSGL_V, "read_asf_header found dvr-ms audio stream header pos=%d\n", sh_pos);
+      // found audio stream header - following code reads header and
+      // initializes audio stream.
+      audio_pos = pos - 16 - 8;
+      streamh = (ASF_stream_header_t *)&hdr[sh_pos];
+      le2me_ASF_stream_header_t(streamh);
+      audio_pos += 64; //16+16+4+4+4+16+4;
+      buffer = &hdr[audio_pos];
+      sh_audio=new_sh_audio(demuxer,streamh->stream_no & 0x7F);
+      sh_audio->needs_parsing = 1;
+      mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Audio stream found, -aid %d\n", "asfheader", streamh->stream_no & 0x7F);
+      ++audio_streams;
+      if (!asf_init_audio_stream(demuxer, asf, sh_audio, streamh, &audio_pos, &buffer, hdr, hdr_len))
+        goto len_err_out;
+      if (!get_ext_stream_properties(hdr, hdr_len, streamh->stream_no, asf, 0))
+        goto len_err_out;
+    }
+  }
+  // find stream headers
+  // only reset pos if we didnt find dvr_ms audio stream
+  // if we did find it then we want to avoid reading its header twice
+  if (audio_pos == 0)
+    pos = 0;
+
+  while ((pos = find_asf_guid(hdr, asf_stream_header_guid, pos, hdr_len)) >= 0)
+  {
+    streamh = (ASF_stream_header_t *)&hdr[pos];
+    pos += sizeof(ASF_stream_header_t);
+    if (pos > hdr_len) goto len_err_out;
+    le2me_ASF_stream_header_t(streamh);
+    mp_msg(MSGT_HEADER, MSGL_V, "stream type: %s\n",
+            asf_chunk_type(streamh->type));
+    mp_msg(MSGT_HEADER, MSGL_V, "stream concealment: %s\n",
+            asf_chunk_type(streamh->concealment));
+    mp_msg(MSGT_HEADER, MSGL_V, "type: %d bytes,  stream: %d bytes  ID: %d\n",
+            (int)streamh->type_size, (int)streamh->stream_size,
+            (int)streamh->stream_no);
+    mp_msg(MSGT_HEADER, MSGL_V, "unk1: %lX  unk2: %X\n",
+            (unsigned long)streamh->unk1, (unsigned int)streamh->unk2);
+    mp_msg(MSGT_HEADER, MSGL_V, "FILEPOS=0x%X\n", pos + start);
+    // type-specific data:
+    buffer = &hdr[pos];
+    pos += streamh->type_size;
+    if (pos > hdr_len) goto len_err_out;
+    switch(ASF_LOAD_GUID_PREFIX(streamh->type)){
+      case ASF_GUID_PREFIX_audio_stream: {
+        sh_audio_t* sh_audio=new_sh_audio(demuxer,streamh->stream_no & 0x7F);
+        mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Audio stream found, -aid %d\n", "asfheader", streamh->stream_no & 0x7F);
+        ++audio_streams;
+        if (!asf_init_audio_stream(demuxer, asf, sh_audio, streamh, &pos, &buffer, hdr, hdr_len))
+          goto len_err_out;
+	//if(demuxer->audio->id==-1) demuxer->audio->id=streamh.stream_no & 0x7F;
+        break;
+        }
+      case ASF_GUID_PREFIX_video_stream: {
+        unsigned int len;
+        float asp_ratio;
+        sh_video_t* sh_video=new_sh_video(demuxer,streamh->stream_no & 0x7F);
+        mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Video stream found, -vid %d\n", "asfheader", streamh->stream_no & 0x7F);
+        len=streamh->type_size-(4+4+1+2);
+	++video_streams;
+//        sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize);
+        sh_video->bih=calloc((len<sizeof(*sh_video->bih))?sizeof(*sh_video->bih):len,1);
+        memcpy(sh_video->bih,&buffer[4+4+1+2],len);
+	le2me_BITMAPINFOHEADER(sh_video->bih);
+	if (sh_video->bih->biSize > len && sh_video->bih->biSize > sizeof(*sh_video->bih))
+		sh_video->bih->biSize = len;
+        if (sh_video->bih->biCompression == mmioFOURCC('D', 'V', 'R', ' ')) {
+          //mp_tmsg(MSGT_DEMUXER, MSGL_WARN, "DVR will probably only work with libavformat, try -demuxer 35 if you have problems\n");
+          //sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale;
+          //sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate;
+          asf->asf_frame_state=-1;
+          asf->asf_frame_start_found=0;
+          asf->asf_is_dvr_ms=1;
+          asf->dvr_last_vid_pts=0.0;
+        } else asf->asf_is_dvr_ms=0;
+        if (!get_ext_stream_properties(hdr, hdr_len, streamh->stream_no, asf, 1))
+            goto len_err_out;
+        if (get_meta(hdr, hdr_len, streamh->stream_no, &asp_ratio)) {
+          sh_video->aspect = asp_ratio * sh_video->bih->biWidth /
+            sh_video->bih->biHeight;
+        }
+        sh_video->i_bps = asf->bps;
+
+        if( mp_msg_test(MSGT_DEMUX,MSGL_V) ) print_video_header(sh_video->bih, MSGL_V);
+        //asf_video_id=streamh.stream_no & 0x7F;
+	//if(demuxer->video->id==-1) demuxer->video->id=streamh.stream_no & 0x7F;
+        break;
+        }
+      }
+      // stream-specific data:
+      // stream_read(demuxer->stream,(char*) buffer,streamh.stream_size);
+  }
+
+  // find file header
+  pos = find_asf_guid(hdr, asf_file_header_guid, 0, hdr_len);
+  if (pos >= 0) {
+      ASF_file_header_t *fileh = (ASF_file_header_t *)&hdr[pos];
+      pos += sizeof(ASF_file_header_t);
+      if (pos > hdr_len) goto len_err_out;
+      le2me_ASF_file_header_t(fileh);
+      mp_msg(MSGT_HEADER, MSGL_V, "ASF: packets: %d  flags: %d  "
+              "max_packet_size: %d  min_packet_size: %d  max_bitrate: %d  "
+              "preroll: %d\n",
+              (int)fileh->num_packets, (int)fileh->flags,
+              (int)fileh->min_packet_size, (int)fileh->max_packet_size,
+              (int)fileh->max_bitrate, (int)fileh->preroll);
+      asf->packetsize=fileh->max_packet_size;
+      asf->packet=malloc(asf->packetsize); // !!!
+      asf->packetrate=fileh->max_bitrate/8.0/(double)asf->packetsize;
+      asf->movielength=FFMAX(0.0, (fileh->play_duration / 10000.0 - fileh->preroll) / 1000.0);
+  }
+
+  // find content header
+  pos = find_asf_guid(hdr, asf_content_desc_guid, 0, hdr_len);
+  if (pos >= 0) {
+        ASF_content_description_t *contenth = (ASF_content_description_t *)&hdr[pos];
+        char *string=NULL;
+        uint16_t* wstring = NULL;
+        uint16_t len;
+        pos += sizeof(ASF_content_description_t);
+        if (pos > hdr_len) goto len_err_out;
+	le2me_ASF_content_description_t(contenth);
+	mp_msg(MSGT_HEADER,MSGL_V,"\n");
+        // extract the title
+        if((len = contenth->title_size) != 0) {
+          wstring = (uint16_t*)&hdr[pos];
+          pos += len;
+          if (pos > hdr_len) goto len_err_out;
+          if ((string = get_ucs2str(wstring, len))) {
+            mp_msg(MSGT_HEADER,MSGL_V," Title: %s\n", string);
+            demux_info_add(demuxer, "title", string);
+            free(string);
+          }
+        }
+        // extract the author
+        if((len = contenth->author_size) != 0) {
+          wstring = (uint16_t*)&hdr[pos];
+          pos += len;
+          if (pos > hdr_len) goto len_err_out;
+          if ((string = get_ucs2str(wstring, len))) {
+            mp_msg(MSGT_HEADER,MSGL_V," Author: %s\n", string);
+            demux_info_add(demuxer, "author", string);
+            free(string);
+          }
+        }
+        // extract the copyright
+        if((len = contenth->copyright_size) != 0) {
+          wstring = (uint16_t*)&hdr[pos];
+          pos += len;
+          if (pos > hdr_len) goto len_err_out;
+          if ((string = get_ucs2str(wstring, len))) {
+            mp_msg(MSGT_HEADER,MSGL_V," Copyright: %s\n", string);
+            demux_info_add(demuxer, "copyright", string);
+            free(string);
+          }
+        }
+        // extract the comment
+        if((len = contenth->comment_size) != 0) {
+          wstring = (uint16_t*)&hdr[pos];
+          pos += len;
+          if (pos > hdr_len) goto len_err_out;
+          if ((string = get_ucs2str(wstring, len))) {
+            mp_msg(MSGT_HEADER,MSGL_V," Comment: %s\n", string);
+            demux_info_add(demuxer, "comments", string);
+            free(string);
+          }
+        }
+        // extract the rating
+        if((len = contenth->rating_size) != 0) {
+          wstring = (uint16_t*)&hdr[pos];
+          pos += len;
+          if (pos > hdr_len) goto len_err_out;
+          if ((string = get_ucs2str(wstring, len))) {
+            mp_msg(MSGT_HEADER,MSGL_V," Rating: %s\n", string);
+            free(string);
+          }
+        }
+	mp_msg(MSGT_HEADER,MSGL_V,"\n");
+  }
+
+  // find content header
+  pos = find_asf_guid(hdr, asf_stream_group_guid, 0, hdr_len);
+  if (pos >= 0) {
+        int max_streams = (hdr_len - pos - 2) / 6;
+        uint16_t stream_id, i;
+        uint32_t max_bitrate;
+        char *ptr = &hdr[pos];
+        mp_msg(MSGT_HEADER,MSGL_V,"============ ASF Stream group == START ===\n");
+        if(max_streams <= 0) goto len_err_out;
+        stream_count = AV_RL16(ptr);
+        ptr += sizeof(uint16_t);
+        if(stream_count > max_streams) stream_count = max_streams;
+        if(stream_count > 0)
+              streams = malloc(2*stream_count*sizeof(uint32_t));
+        mp_msg(MSGT_HEADER,MSGL_V," stream count=[0x%x][%u]\n", stream_count, stream_count );
+        for( i=0 ; i<stream_count ; i++ ) {
+          stream_id = AV_RL16(ptr);
+          ptr += sizeof(uint16_t);
+          max_bitrate = AV_RL32(ptr);
+          ptr += sizeof(uint32_t);
+          mp_msg(MSGT_HEADER,MSGL_V,"   stream id=[0x%x][%u]\n", stream_id, stream_id );
+          mp_msg(MSGT_HEADER,MSGL_V,"   max bitrate=[0x%x][%u]\n", max_bitrate, max_bitrate );
+          streams[2*i] = stream_id;
+          streams[2*i+1] = max_bitrate;
+        }
+        mp_msg(MSGT_HEADER,MSGL_V,"============ ASF Stream group == END ===\n");
+  }
+  free(hdr);
+  hdr = NULL;
+  start = stream_tell(demuxer->stream); // start of first data chunk
+  stream_read(demuxer->stream, guid_buffer, 16);
+  if (memcmp(guid_buffer, asf_data_chunk_guid, 16) != 0) {
+    mp_tmsg(MSGT_HEADER, MSGL_FATAL, "No data chunk following header!\n");
+    free(streams);
+    streams = NULL;
+    return 0;
+  }
+  // read length of chunk
+  data_len = stream_read_qword_le(demuxer->stream);
+  demuxer->movi_start = stream_tell(demuxer->stream) + 26;
+  demuxer->movi_end = start + data_len;
+  mp_msg(MSGT_HEADER, MSGL_V, "Found movie at 0x%X - 0x%X\n",
+          (int)demuxer->movi_start, (int)demuxer->movi_end);
+
+if(streams) {
+  // stream selection is done in the network code, it shouldn't be done here
+  // as the servers often do not care about what we requested.
+#if 0
+  uint32_t vr = 0, ar = 0,i;
+#ifdef CONFIG_NETWORKING
+  if( demuxer->stream->streaming_ctrl!=NULL ) {
+	  if( demuxer->stream->streaming_ctrl->bandwidth!=0 && demuxer->stream->streaming_ctrl->data!=NULL ) {
+		  best_audio = ((asf_http_streaming_ctrl_t*)demuxer->stream->streaming_ctrl->data)->audio_id;
+		  best_video = ((asf_http_streaming_ctrl_t*)demuxer->stream->streaming_ctrl->data)->video_id;
+	  }
+  } else
+#endif
+  for(i = 0; i < stream_count; i++) {
+    uint32_t id = streams[2*i];
+    uint32_t rate = streams[2*i+1];
+    if(demuxer->v_streams[id] && rate > vr) {
+      vr = rate;
+      best_video = id;
+    } else if(demuxer->a_streams[id] && rate > ar) {
+      ar = rate;
+      best_audio = id;
+    }
+  }
+#endif
+  free(streams);
+  streams = NULL;
+}
+
+mp_msg(MSGT_HEADER,MSGL_V,"ASF: %d audio and %d video streams found\n",audio_streams,video_streams);
+if(!audio_streams) demuxer->audio->id=-2;  // nosound
+else if(best_audio > 0 && demuxer->audio->id == -1) demuxer->audio->id=best_audio;
+if(!video_streams){
+    if(!audio_streams){
+	mp_tmsg(MSGT_HEADER,MSGL_ERR,"ASF: no audio or video headers found - broken file?\n");
+	return 0;
+    }
+    demuxer->video->id=-2; // audio-only
+} else if (best_video > 0 && demuxer->video->id == -1) demuxer->video->id = best_video;
+
+#if 0
+if( mp_msg_test(MSGT_HEADER,MSGL_V) ){
+    printf("ASF duration: %d\n",(int)fileh.duration);
+    printf("ASF start pts: %d\n",(int)fileh.start_timestamp);
+    printf("ASF end pts: %d\n",(int)fileh.end_timestamp);
+}
+#endif
+
+return 1;
+
+len_err_out:
+  mp_tmsg(MSGT_HEADER, MSGL_FATAL, "Invalid length in ASF header!\n");
+err_out:
+  free(hdr);
+  free(streams);
+  return 0;
+}