| 1 | /****************************************************************************** |
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| 2 | * SAGE - Scalable Adaptive Graphics Environment |
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| 3 | * |
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| 4 | * Copyright (C) 2004 Electronic Visualization Laboratory, |
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| 5 | * University of Illinois at Chicago |
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| 6 | * |
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| 7 | * All rights reserved. |
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| 8 | * |
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| 9 | * Redistribution and use in source and binary forms, with or without |
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| 10 | * modification, are permitted provided that the following conditions are met: |
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| 11 | * |
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| 12 | * * Redistributions of source code must retain the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer. |
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| 14 | * * Redistributions in binary form must reproduce the above |
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| 15 | * copyright notice, this list of conditions and the following disclaimer |
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| 16 | * in the documentation and/or other materials provided with the distribution. |
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| 17 | * * Neither the name of the University of Illinois at Chicago nor |
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| 18 | * the names of its contributors may be used to endorse or promote |
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| 19 | * products derived from this software without specific prior written permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| 22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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| 24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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| 25 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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| 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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| 27 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| 28 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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| 29 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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| 30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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| 31 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 32 | * |
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| 33 | * Direct questions, comments etc about SAGE to http://www.evl.uic.edu/cavern/forum/ |
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| 34 | * |
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| 35 | *****************************************************************************/ |
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| 36 | |
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| 37 | #ifndef SVC_DECODE_MPEG2_H |
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| 38 | #define SVC_DECODE_MPEG2_H |
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| 39 | |
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| 40 | #include <stdio.h> |
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| 41 | #include <stdlib.h> |
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| 42 | #include <string.h> |
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| 43 | #include <inttypes.h> |
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| 44 | #include "SVC_codecs.h" |
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| 45 | extern "C" |
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| 46 | { |
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| 47 | #include "mpeg2dec/mpeg2.h" |
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| 48 | #include "mpeg2dec/mpeg2convert.h" |
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| 49 | } |
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| 50 | #include "SVC_output_module.h" |
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| 51 | //#include "SVC_decode_module.h" |
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| 52 | |
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| 53 | |
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| 54 | #define DEMUX_PAYLOAD_START 1 |
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| 55 | #define DEMUX_HEADER 0 |
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| 56 | #define DEMUX_DATA 1 |
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| 57 | #define DEMUX_SKIP 2 |
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| 58 | static int state = DEMUX_SKIP; |
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| 59 | static int state_bytes = 0; |
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| 60 | static uint8_t head_buf[264]; |
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| 61 | static int buffer_size = 188; |
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| 62 | |
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| 63 | typedef struct { |
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| 64 | int (* convert) (int stage, void * id, |
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| 65 | const struct mpeg2_sequence_s * sequence, |
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| 66 | int stride, uint32_t accel, void * arg, |
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| 67 | struct mpeg2_convert_init_s * result); |
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| 68 | } vo_setup_result_t; |
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| 69 | |
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| 70 | |
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| 71 | class SVC_decode_mpeg2 |
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| 72 | { |
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| 73 | public: |
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| 74 | SVC_decode_mpeg2(); |
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| 75 | void init(int program_id, int color_mode, int buf_size, char* output_addr, int output_port); |
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| 76 | void set_output_callback(void* output_obj, DECODEOUTPUT_CALLBACK callback); |
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| 77 | void decode (unsigned char* input_data, int input_size); |
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| 78 | static void * malloc_hook (unsigned size, mpeg2_alloc_t reason); |
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| 79 | void mpeg2_initialization(); |
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| 80 | void set_output_module(SVC_output_module* o_module); |
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| 81 | void stop(); |
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| 82 | int demux (uint8_t * buf, uint8_t * end, int flags); |
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| 83 | void decode_mpeg2 (uint8_t * current, uint8_t * end); |
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| 84 | int output_setup (unsigned int width, |
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| 85 | unsigned int height, unsigned int chroma_width, |
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| 86 | unsigned int chroma_height); |
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| 87 | private: |
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| 88 | int m_byte_pixel; |
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| 89 | int demux_pid; |
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| 90 | int demux_track; |
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| 91 | int m_color_mode; |
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| 92 | int total_offset; |
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| 93 | mpeg2dec_t * mpeg2dec; |
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| 94 | vo_setup_result_t m_convert_result; |
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| 95 | DECODEOUTPUT_CALLBACK m_output_callback; |
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| 96 | void * m_output_obj; |
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| 97 | SVC_output_module * m_output_module; |
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| 98 | char* m_output_addr; |
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| 99 | int m_output_port; |
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| 100 | |
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| 101 | //decoded image information |
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| 102 | unsigned int m_width; |
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| 103 | unsigned int m_height; |
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| 104 | unsigned int m_chroma_width; |
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| 105 | unsigned int m_chroma_height; |
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| 106 | unsigned char * fbuf[3][3]; |
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| 107 | |
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| 108 | uint8_t * buffer; |
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| 109 | uint8_t * buf; |
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| 110 | uint8_t * nextbuf; |
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| 111 | uint8_t * data; |
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| 112 | uint8_t * end; |
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| 113 | }; |
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| 114 | #endif |
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| 115 | |
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