3 * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
4 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
6 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
7 * See http://libmpeg2.sourceforge.net/ for updates.
9 * mpeg2dec is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * mpeg2dec is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #define MPEG2_VERSION(a,b,c) (((a)<<16)|((b)<<8)|(c))
28 #define MPEG2_RELEASE MPEG2_VERSION (0, 4, 0) /* 0.4.0 */
30 #define SEQ_FLAG_MPEG2 1
31 #define SEQ_FLAG_CONSTRAINED_PARAMETERS 2
32 #define SEQ_FLAG_PROGRESSIVE_SEQUENCE 4
33 #define SEQ_FLAG_LOW_DELAY 8
34 #define SEQ_FLAG_COLOUR_DESCRIPTION 16
36 #define SEQ_MASK_VIDEO_FORMAT 0xe0
37 #define SEQ_VIDEO_FORMAT_COMPONENT 0
38 #define SEQ_VIDEO_FORMAT_PAL 0x20
39 #define SEQ_VIDEO_FORMAT_NTSC 0x40
40 #define SEQ_VIDEO_FORMAT_SECAM 0x60
41 #define SEQ_VIDEO_FORMAT_MAC 0x80
42 #define SEQ_VIDEO_FORMAT_UNSPECIFIED 0xa0
44 typedef struct mpeg2_sequence_s
46 unsigned int width, height;
47 unsigned int chroma_width, chroma_height;
48 unsigned int byte_rate;
49 unsigned int vbv_buffer_size;
52 unsigned int picture_width, picture_height;
53 unsigned int display_width, display_height;
54 unsigned int pixel_width, pixel_height;
55 unsigned int frame_period;
57 uint8_t profile_level_id;
58 uint8_t colour_primaries;
59 uint8_t transfer_characteristics;
60 uint8_t matrix_coefficients;
61 int aspect_ratio_information;
64 #define GOP_FLAG_DROP_FRAME 1
65 #define GOP_FLAG_BROKEN_LINK 2
66 #define GOP_FLAG_CLOSED_GOP 4
68 typedef struct mpeg2_gop_s
77 #define PIC_MASK_CODING_TYPE 7
78 #define PIC_FLAG_CODING_TYPE_I 1
79 #define PIC_FLAG_CODING_TYPE_P 2
80 #define PIC_FLAG_CODING_TYPE_B 3
81 #define PIC_FLAG_CODING_TYPE_D 4
83 #define PIC_FLAG_TOP_FIELD_FIRST 8
84 #define PIC_FLAG_PROGRESSIVE_FRAME 16
85 #define PIC_FLAG_COMPOSITE_DISPLAY 32
86 #define PIC_FLAG_SKIP 64
87 #define PIC_FLAG_TAGS 128
88 #define PIC_MASK_COMPOSITE_DISPLAY 0xfffff000
90 typedef struct mpeg2_picture_s
92 unsigned int temporal_reference;
93 unsigned int nb_fields;
101 typedef struct mpeg2_fbuf_s
107 typedef struct mpeg2_info_s
109 const mpeg2_sequence_t * sequence;
110 const mpeg2_gop_t * gop;
111 const mpeg2_picture_t * current_picture;
112 const mpeg2_picture_t * current_picture_2nd;
113 const mpeg2_fbuf_t * current_fbuf;
114 const mpeg2_picture_t * display_picture;
115 const mpeg2_picture_t * display_picture_2nd;
116 const mpeg2_fbuf_t * display_fbuf;
117 const mpeg2_fbuf_t * discard_fbuf;
118 const uint8_t * user_data;
119 unsigned int user_data_len;
122 typedef struct mpeg2dec_s mpeg2dec_t;
123 typedef struct mpeg2_decoder_s mpeg2_decoder_t;
129 STATE_SEQUENCE_REPEATED = 2,
133 STATE_PICTURE_2ND = 6,
137 STATE_INVALID_END = 10
140 typedef struct mpeg2_convert_init_s
142 unsigned int id_size;
143 unsigned int buf_size[3];
144 void (* start) (void * id, const mpeg2_fbuf_t * fbuf,
145 const mpeg2_picture_t * picture, const mpeg2_gop_t * gop);
146 void (* copy) (void * id, uint8_t * const * src, unsigned int v_offset);
147 } mpeg2_convert_init_t;
151 MPEG2_CONVERT_SET = 0,
152 MPEG2_CONVERT_STRIDE = 1,
153 MPEG2_CONVERT_START = 2
154 } mpeg2_convert_stage_t;
156 typedef int mpeg2_convert_t (int stage, void * id,
157 const mpeg2_sequence_t * sequence, int stride,
158 uint32_t accel, void * arg,
159 mpeg2_convert_init_t * result);
160 int mpeg2_convert (mpeg2dec_t * mpeg2dec, mpeg2_convert_t convert, void * arg);
161 int mpeg2_stride (mpeg2dec_t * mpeg2dec, int stride);
162 void mpeg2_set_buf (mpeg2dec_t * mpeg2dec, uint8_t * buf[3], void * id);
163 void mpeg2_custom_fbuf (mpeg2dec_t * mpeg2dec, int custom_fbuf);
165 #define MPEG2_ACCEL_X86_MMX 1
166 #define MPEG2_ACCEL_X86_3DNOW 2
167 #define MPEG2_ACCEL_X86_MMXEXT 4
168 #define MPEG2_ACCEL_PPC_ALTIVEC 1
169 #define MPEG2_ACCEL_ALPHA 1
170 #define MPEG2_ACCEL_ALPHA_MVI 2
171 #define MPEG2_ACCEL_SPARC_VIS 1
172 #define MPEG2_ACCEL_SPARC_VIS2 2
173 #define MPEG2_ACCEL_DETECT 0x80000000
175 uint32_t mpeg2_accel (uint32_t accel);
176 mpeg2dec_t * mpeg2_init (void);
177 const mpeg2_info_t * mpeg2_info (mpeg2dec_t * mpeg2dec);
178 void mpeg2_close (mpeg2dec_t * mpeg2dec);
180 void mpeg2_buffer (mpeg2dec_t * mpeg2dec, uint8_t * start, uint8_t * end);
181 int mpeg2_getpos (mpeg2dec_t * mpeg2dec);
182 mpeg2_state_t mpeg2_parse (mpeg2dec_t * mpeg2dec);
184 void mpeg2_reset (mpeg2dec_t * mpeg2dec, int full_reset);
185 void mpeg2_skip (mpeg2dec_t * mpeg2dec, int skip);
186 void mpeg2_slice_region (mpeg2dec_t * mpeg2dec, int start, int end);
188 void mpeg2_tag_picture (mpeg2dec_t * mpeg2dec, uint32_t tag, uint32_t tag2);
190 void mpeg2_init_fbuf (mpeg2_decoder_t * decoder, uint8_t * current_fbuf[3],
191 uint8_t * forward_fbuf[3], uint8_t * backward_fbuf[3]);
195 MPEG2_ALLOC_MPEG2DEC = 0,
196 MPEG2_ALLOC_CHUNK = 1,
198 MPEG2_ALLOC_CONVERT_ID = 3,
199 MPEG2_ALLOC_CONVERTED = 4
202 void * mpeg2_malloc (unsigned size, mpeg2_alloc_t reason);
203 void mpeg2_free (void * buf);
204 void mpeg2_malloc_hooks (void * malloc (unsigned, mpeg2_alloc_t),