libmpdemux/asf.h

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef MPLAYER_ASF_H
  20 #define MPLAYER_ASF_H
  21
  22 //#include "config.h"   /* for HAVE_BIGENDIAN */
  23 #include <inttypes.h>
  24 #include "libavutil/common.h"
  25 #include "mpbswap.h"
  26
  27 ///////////////////////
  28 // ASF Object Header
  29 ///////////////////////
  30 typedef struct __attribute__((packed)) {
  31   uint8_t guid[16];
  32   uint64_t size;
  33 } ASF_obj_header_t;
  34
  35 ////////////////
  36 // ASF Header
  37 ////////////////
  38 typedef struct __attribute__((packed)) {
  39   ASF_obj_header_t objh;
  40   uint32_t cno; // number of subchunks
  41   uint8_t v1; // unknown (0x01)
  42   uint8_t v2; // unknown (0x02)
  43 } ASF_header_t;
  44
  45 /////////////////////
  46 // ASF File Header
  47 /////////////////////
  48 typedef struct __attribute__((packed)) {
  49   uint8_t stream_id[16]; // stream GUID
  50   uint64_t file_size;
  51   uint64_t creation_time; //File creation time FILETIME 8
  52   uint64_t num_packets;    //Number of packets UINT64 8
  53   uint64_t play_duration; //Timestamp of the end position UINT64 8
  54   uint64_t send_duration;  //Duration of the playback UINT64 8
  55   uint64_t preroll; //Time to bufferize before playing UINT32 4
  56   uint32_t flags; //Unknown, maybe flags ( usually contains 2 ) UINT32 4
  57   uint32_t min_packet_size; //Min size of the packet, in bytes UINT32 4
  58   uint32_t max_packet_size; //Max size of the packet  UINT32 4
  59   uint32_t max_bitrate; //Maximum bitrate of the media (sum of all the stream)
  60 } ASF_file_header_t;
  61
  62 ///////////////////////
  63 // ASF Stream Header
  64 ///////////////////////
  65 typedef struct __attribute__((packed)) {
  66   uint8_t type[16]; // Stream type (audio/video) GUID 16
  67   uint8_t concealment[16]; // Audio error concealment type GUID 16
  68   uint64_t unk1; // Unknown, maybe reserved ( usually contains 0 ) UINT64 8
  69   uint32_t type_size; //Total size of type-specific data UINT32 4
  70   uint32_t stream_size; //Size of stream-specific data UINT32 4
  71   uint16_t stream_no; //Stream number UINT16 2
  72   uint32_t unk2; //Unknown UINT32 4
  73 } ASF_stream_header_t;
  74
  75 ///////////////////////////
  76 // ASF Content Description
  77 ///////////////////////////
  78 typedef struct  __attribute__((packed)) {
  79   uint16_t title_size;
  80   uint16_t author_size;
  81   uint16_t copyright_size;
  82   uint16_t comment_size;
  83   uint16_t rating_size;
  84 } ASF_content_description_t;
  85
  86 ////////////////////////
  87 // ASF Segment Header
  88 ////////////////////////
  89 typedef struct __attribute__((packed)) {
  90   uint8_t streamno;
  91   uint8_t seq;
  92   uint32_t x;
  93   uint8_t flag;
  94 } ASF_segmhdr_t;
  95
  96 //////////////////////
  97 // ASF Stream Chunck
  98 //////////////////////
  99 typedef struct __attribute__((packed)) {
 100         uint16_t        type;
 101         uint16_t        size;
 102         uint32_t        sequence_number;
 103         uint16_t        unknown;
 104         uint16_t        size_confirm;
 105 } ASF_stream_chunck_t;
 106
 107 // Definition of the stream type
 108 #if HAVE_BIGENDIAN
 109         #define ASF_STREAMING_CLEAR     0x2443          // $C
 110         #define ASF_STREAMING_DATA      0x2444          // $D
 111         #define ASF_STREAMING_END_TRANS 0x2445          // $E
 112         #define ASF_STREAMING_HEADER    0x2448          // $H
 113 #else
 114         #define ASF_STREAMING_CLEAR     0x4324          // $C
 115         #define ASF_STREAMING_DATA      0x4424          // $D
 116         #define ASF_STREAMING_END_TRANS 0x4524          // $E
 117         #define ASF_STREAMING_HEADER    0x4824          // $H
 118 #endif
 119
 120 // Definition of the differents type of ASF streaming
 121 typedef enum {
 122         ASF_Unknown_e,
 123         ASF_Live_e,
 124         ASF_Prerecorded_e,
 125         ASF_Redirector_e,
 126         ASF_PlainText_e,
 127         ASF_Authenticate_e
 128 } ASF_StreamType_e;
 129
 130 typedef struct {
 131         ASF_StreamType_e streaming_type;
 132         int request;
 133         int packet_size;
 134         int *audio_streams,n_audio,*video_streams,n_video;
 135         int audio_id, video_id;
 136 } asf_http_streaming_ctrl_t;
 137
 138
 139 /*
 140  * Some macros to swap little endian structures read from an ASF file
 141  * into machine endian format
 142  */
 143 #if HAVE_BIGENDIAN
 144 #define le2me_ASF_obj_header_t(h) {                                     \
 145     (h)->size = le2me_64((h)->size);                                    \
 146 }
 147 #define le2me_ASF_header_t(h) {                                         \
 148     le2me_ASF_obj_header_t(&(h)->objh);                                 \
 149     (h)->cno = le2me_32((h)->cno);                                      \
 150 }
 151 #define le2me_ASF_stream_header_t(h) {                                  \
 152     (h)->unk1 = le2me_64((h)->unk1);                                    \
 153     (h)->type_size = le2me_32((h)->type_size);                          \
 154     (h)->stream_size = le2me_32((h)->stream_size);                      \
 155     (h)->stream_no = le2me_16((h)->stream_no);                          \
 156     (h)->unk2 = le2me_32((h)->unk2);                                    \
 157 }
 158 #define le2me_ASF_file_header_t(h) {                                    \
 159     (h)->file_size = le2me_64((h)->file_size);                          \
 160     (h)->creation_time = le2me_64((h)->creation_time);                  \
 161     (h)->num_packets = le2me_64((h)->num_packets);                      \
 162     (h)->play_duration = le2me_64((h)->play_duration);                  \
 163     (h)->send_duration = le2me_64((h)->send_duration);                  \
 164     (h)->preroll = le2me_64((h)->preroll);                              \
 165     (h)->flags = le2me_32((h)->flags);                                  \
 166     (h)->min_packet_size = le2me_32((h)->min_packet_size);              \
 167     (h)->max_packet_size = le2me_32((h)->max_packet_size);              \
 168     (h)->max_bitrate = le2me_32((h)->max_bitrate);                      \
 169 }
 170 #define le2me_ASF_content_description_t(h) {                            \
 171     (h)->title_size = le2me_16((h)->title_size);                        \
 172     (h)->author_size = le2me_16((h)->author_size);                      \
 173     (h)->copyright_size = le2me_16((h)->copyright_size);                \
 174     (h)->comment_size = le2me_16((h)->comment_size);                    \
 175     (h)->rating_size = le2me_16((h)->rating_size);                      \
 176 }
 177 #define le2me_BITMAPINFOHEADER(h) {                                     \
 178     (h)->biSize = le2me_32((h)->biSize);                                \
 179     (h)->biWidth = le2me_32((h)->biWidth);                              \
 180     (h)->biHeight = le2me_32((h)->biHeight);                            \
 181     (h)->biPlanes = le2me_16((h)->biPlanes);                            \
 182     (h)->biBitCount = le2me_16((h)->biBitCount);                        \
 183     (h)->biCompression = le2me_32((h)->biCompression);                  \
 184     (h)->biSizeImage = le2me_32((h)->biSizeImage);                      \
 185     (h)->biXPelsPerMeter = le2me_32((h)->biXPelsPerMeter);              \
 186     (h)->biYPelsPerMeter = le2me_32((h)->biYPelsPerMeter);              \
 187     (h)->biClrUsed = le2me_32((h)->biClrUsed);                          \
 188     (h)->biClrImportant = le2me_32((h)->biClrImportant);                \
 189 }
 190 #define le2me_WAVEFORMATEX(h) {                                         \
 191     (h)->wFormatTag = le2me_16((h)->wFormatTag);                        \
 192     (h)->nChannels = le2me_16((h)->nChannels);                          \
 193     (h)->nSamplesPerSec = le2me_32((h)->nSamplesPerSec);                \
 194     (h)->nAvgBytesPerSec = le2me_32((h)->nAvgBytesPerSec);              \
 195     (h)->nBlockAlign = le2me_16((h)->nBlockAlign);                      \
 196     (h)->wBitsPerSample = le2me_16((h)->wBitsPerSample);                \
 197     (h)->cbSize = le2me_16((h)->cbSize);                                \
 198 }
 199 #define le2me_ASF_stream_chunck_t(h) {                                  \
 200     (h)->size = le2me_16((h)->size);                                    \
 201     (h)->sequence_number = le2me_32((h)->sequence_number);              \
 202     (h)->unknown = le2me_16((h)->unknown);                              \
 203     (h)->size_confirm = le2me_16((h)->size_confirm);                    \
 204 }
 205 #else
 206 #define le2me_ASF_obj_header_t(h)       /**/
 207 #define le2me_ASF_header_t(h)           /**/
 208 #define le2me_ASF_stream_header_t(h)    /**/
 209 #define le2me_ASF_file_header_t(h)      /**/
 210 #define le2me_ASF_content_description_t(h) /**/
 211 #define le2me_BITMAPINFOHEADER(h)   /**/
 212 #define le2me_WAVEFORMATEX(h)       /**/
 213 #define le2me_ASF_stream_chunck_t(h) /**/
 214 #endif
 215
 216 // priv struct for the demuxer
 217 struct asf_priv {
 218     ASF_header_t header;
 219     unsigned char* packet;
 220     int scrambling_h;
 221     int scrambling_w;
 222     int scrambling_b;
 223     unsigned packetsize;
 224     double   packetrate;
 225     double movielength;
 226     int asf_is_dvr_ms;
 227     uint32_t asf_frame_state;
 228     int asf_frame_start_found;
 229     double dvr_last_vid_pts;
 230     uint64_t vid_frame_ct;
 231     uint64_t play_duration;
 232     uint64_t num_packets;
 233     int new_vid_frame_seg;
 234     int *vid_repdata_sizes;
 235     int *aud_repdata_sizes;
 236     int vid_repdata_count;
 237     int aud_repdata_count;
 238     uint64_t avg_vid_frame_time;
 239     uint64_t last_key_payload_time;
 240     uint64_t last_aud_pts;
 241     uint64_t last_aud_diff;
 242     int found_first_key_frame;
 243     uint32_t last_vid_seq;
 244     int vid_ext_timing_index;
 245     int aud_ext_timing_index;
 246     int vid_ext_frame_index;
 247     int know_frame_time;
 248     unsigned bps;
 249 };
 250
 251 #endif /* MPLAYER_ASF_H */