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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3 | pmbaty | 1 | /* |
| 2 | SMPEG - SDL MPEG Player Library |
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| 3 | Copyright (C) 1999 Loki Entertainment Software |
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| 4 | |||
| 5 | This library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Library General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2 of the License, or (at your option) any later version. |
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| 9 | |||
| 10 | This library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Library General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU Library General Public |
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| 16 | License along with this library; if not, write to the Free |
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| 17 | Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 18 | */ |
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| 19 | |||
| 20 | /* The generic MPEG stream class */ |
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| 21 | |||
| 22 | #ifndef _MPEGSTREAM_H_ |
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| 23 | #define _MPEGSTREAM_H_ |
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| 24 | |||
| 25 | #include "SDL_types.h" |
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| 26 | #include "MPEGerror.h" |
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| 27 | #include "MPEGvideo.h" |
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| 28 | #include "MPEGaudio.h" |
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| 29 | #include "MPEGlist.h" |
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| 30 | |||
| 31 | #define AUDIO_STREAMID 0xc0 |
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| 32 | #define VIDEO_STREAMID 0xe0 |
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| 33 | #define SYSTEM_STREAMID 0xbb |
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| 34 | |||
| 35 | struct MPEGstream_marker |
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| 36 | { |
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| 37 | /* Data to mark part of the stream */ |
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| 38 | MPEGlist * marked_buffer; |
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| 39 | Uint8 *marked_data; |
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| 40 | Uint8 *marked_stop; |
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| 41 | }; |
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| 42 | |||
| 43 | class MPEGstream |
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| 44 | { |
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| 45 | public: |
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| 46 | MPEGstream(class MPEGsystem * System, Uint8 Streamid); |
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| 47 | ~MPEGstream(); |
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| 48 | |||
| 49 | /* Cleanup the buffers and reset the stream */ |
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| 50 | void reset_stream(void); |
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| 51 | |||
| 52 | /* Rewind the stream */ |
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| 53 | void rewind_stream(void); |
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| 54 | |||
| 55 | /* Go to the next packet in the stream */ |
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| 56 | bool next_packet(bool recurse = true, bool update_timestamp = true); |
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| 57 | |||
| 58 | /* Mark a position in the data stream */ |
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| 59 | MPEGstream_marker *new_marker(int offset); |
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| 60 | |||
| 61 | /* Jump to the marked position */ |
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| 62 | bool seek_marker(MPEGstream_marker const * marker); |
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| 63 | |||
| 64 | /* Jump to last successfully marked position */ |
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| 65 | void delete_marker(MPEGstream_marker * marker); |
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| 66 | |||
| 67 | /* Copy data from the stream to a local buffer */ |
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| 68 | Uint32 copy_data(Uint8 *area, Sint32 size, bool short_read = false); |
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| 69 | |||
| 70 | /* Copy a byte from the stream */ |
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| 71 | int copy_byte(void); |
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| 72 | |||
| 73 | /* Check for end of file or an error in the stream */ |
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| 74 | bool eof(void) const; |
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| 75 | |||
| 76 | /* Insert a new packet at the end of the stream */ |
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| 77 | void insert_packet(Uint8 * data, Uint32 size, double timestamp=-1); |
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| 78 | |||
| 79 | /* Check for unused buffers and free them */ |
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| 80 | void garbage_collect(void); |
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| 81 | |||
| 82 | /* Enable or disable the stream */ |
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| 83 | void enable(bool toggle); |
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| 84 | |||
| 85 | /* Get stream time */ |
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| 86 | double time(); |
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| 87 | |||
| 88 | Uint32 pos; |
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| 89 | |||
| 90 | Uint8 streamid; |
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| 91 | |||
| 92 | protected: |
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| 93 | Uint8 *data; |
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| 94 | Uint8 *stop; |
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| 95 | |||
| 96 | Uint32 preread_size; |
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| 97 | |||
| 98 | class MPEGsystem * system; |
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| 99 | MPEGlist * br; |
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| 100 | bool cleareof; |
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| 101 | bool enabled; |
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| 102 | |||
| 103 | SDL_mutex * mutex; |
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| 104 | |||
| 105 | /* Get a buffer from the stream */ |
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| 106 | bool next_system_buffer(void); |
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| 107 | |||
| 108 | public: |
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| 109 | /* "pos" where "timestamp" belongs */ |
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| 110 | Uint32 timestamp_pos; |
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| 111 | double timestamp; |
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| 112 | }; |
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| 113 | |||
| 114 | #endif /* _MPEGSTREAM_H_ */ |
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| 115 | |||
| 116 |