Diffstat (limited to 'core/multimedia/opieplayer/libmpeg3/audio/mpeg3audio.h') (more/less context) (ignore whitespace changes)
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diff --git a/core/multimedia/opieplayer/libmpeg3/audio/mpeg3audio.h b/core/multimedia/opieplayer/libmpeg3/audio/mpeg3audio.h new file mode 100644 index 0000000..2117be7 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/mpeg3audio.h | |||
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1 | /********************************************************************** | ||
2 | ** Copyright (C) 2000 Trolltech AS. All rights reserved. | ||
3 | ** | ||
4 | ** This file is part of Qtopia Environment. | ||
5 | ** | ||
6 | ** This file may be distributed and/or modified under the terms of the | ||
7 | ** GNU General Public License version 2 as published by the Free Software | ||
8 | ** Foundation and appearing in the file LICENSE.GPL included in the | ||
9 | ** packaging of this file. | ||
10 | ** | ||
11 | ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE | ||
12 | ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | ||
13 | ** | ||
14 | ** See http://www.trolltech.com/gpl/ for GPL licensing information. | ||
15 | ** | ||
16 | ** Contact info@trolltech.com if any conditions of this licensing are | ||
17 | ** not clear to you. | ||
18 | ** | ||
19 | **********************************************************************/ | ||
20 | #ifndef MPEG3AUDIO_H | ||
21 | #define MPEG3AUDIO_H | ||
22 | |||
23 | #include "ac3.h" | ||
24 | #include "../bitstream.h" | ||
25 | typedef struct mpeg3_atrack_rec mpeg3_atrack_t; | ||
26 | |||
27 | #define MAXFRAMESIZE 1792 | ||
28 | #define HDRCMPMASK 0xfffffd00 | ||
29 | #define SBLIMIT 32 | ||
30 | #define SSLIMIT 18 | ||
31 | #define SCALE_BLOCK 12 | ||
32 | #define MPEG3AUDIO_PADDING 1024 | ||
33 | |||
34 | /* Values for mode */ | ||
35 | #define MPG_MD_STEREO 0 | ||
36 | #define MPG_MD_JOINT_STEREO 1 | ||
37 | #define MPG_MD_DUAL_CHANNEL 2 | ||
38 | #define MPG_MD_MONO 3 | ||
39 | |||
40 | /* IMDCT variables */ | ||
41 | typedef struct | ||
42 | { | ||
43 | mpeg3_real_t real; | ||
44 | mpeg3_real_t imag; | ||
45 | } mpeg3_complex_t; | ||
46 | |||
47 | #define AC3_N 512 | ||
48 | |||
49 | struct al_table | ||
50 | { | ||
51 | short bits; | ||
52 | short d; | ||
53 | }; | ||
54 | |||
55 | typedef struct | ||
56 | { | ||
57 | struct mpeg3_rec* file; | ||
58 | mpeg3_atrack_t* track; | ||
59 | mpeg3_bits_t *astream; | ||
60 | |||
61 | /* In order of importance */ | ||
62 | int format; /* format of audio */ | ||
63 | int layer; /* layer if mpeg */ | ||
64 | int channels; | ||
65 | long outscale; | ||
66 | long framenum; | ||
67 | long prev_framesize; | ||
68 | long framesize; /* For mp3 current framesize without header. For AC3 current framesize with header. */ | ||
69 | int avg_framesize; /* Includes the 4 byte header */ | ||
70 | mpeg3_real_t *pcm_sample; /* Interlaced output from synthesizer in floats */ | ||
71 | int pcm_point; /* Float offset in pcm_sample to write to */ | ||
72 | long pcm_position; /* Sample start of pcm_samples in file */ | ||
73 | long pcm_size; /* Number of pcm samples in the buffer */ | ||
74 | long pcm_allocated; /* Allocated number of samples in pcm_samples */ | ||
75 | int sample_seek; | ||
76 | double percentage_seek; | ||
77 | unsigned long oldhead; | ||
78 | unsigned long newhead; | ||
79 | unsigned long firsthead; | ||
80 | int bsnum; | ||
81 | int lsf; | ||
82 | int mpeg35; | ||
83 | int sampling_frequency_code; | ||
84 | int bitrate_index; | ||
85 | int bitrate; | ||
86 | int samples_per_frame; | ||
87 | int padding; | ||
88 | int extension; | ||
89 | int mode; | ||
90 | int mode_ext; | ||
91 | int copyright; | ||
92 | int original; | ||
93 | int emphasis; | ||
94 | int error_protection; | ||
95 | |||
96 | /* Back step buffers for mp3 */ | ||
97 | unsigned char bsspace[2][MAXFRAMESIZE + 512]; /* MAXFRAMESIZE */ | ||
98 | unsigned char *bsbuf, *bsbufold; | ||
99 | long ssize; | ||
100 | int init; | ||
101 | int single; | ||
102 | struct al_table *alloc; | ||
103 | int II_sblimit; | ||
104 | int jsbound; | ||
105 | int bo; /* Static variable in synthesizer */ | ||
106 | |||
107 | /* MP3 Static arrays here */ | ||
108 | mpeg3_real_t synth_stereo_buffs[2][2][0x110]; | ||
109 | mpeg3_real_t synth_mono_buff[64]; | ||
110 | unsigned int layer2_scfsi_buf[64]; | ||
111 | |||
112 | mpeg3_real_t mp3_block[2][2][SBLIMIT * SSLIMIT]; | ||
113 | int mp3_blc[2]; | ||
114 | |||
115 | /* AC3 specific stuff. AC3 also shares objects with MPEG */ | ||
116 | unsigned int ac3_framesize_code; | ||
117 | mpeg3_ac3bsi_t ac3_bsi; | ||
118 | mpeg3_ac3audblk_t ac3_audblk; | ||
119 | mpeg3_ac3_bitallocation_t ac3_bit_allocation; | ||
120 | mpeg3_ac3_mantissa_t ac3_mantissa; | ||
121 | mpeg3_complex_t ac3_imdct_buf[AC3_N / 4]; | ||
122 | |||
123 | /* Delay buffer for DCT interleaving */ | ||
124 | mpeg3_real_t ac3_delay[6][AC3_N / 2]; | ||
125 | /* Twiddle factor LUT */ | ||
126 | mpeg3_complex_t *ac3_w[7]; | ||
127 | #if !defined(USE_FIXED_POINT) || defined(PRINT_FIXED_POINT_TABLES) | ||
128 | /* Just for allocated memory */ | ||
129 | mpeg3_complex_t ac3_w_1[1]; | ||
130 | mpeg3_complex_t ac3_w_2[2]; | ||
131 | mpeg3_complex_t ac3_w_4[4]; | ||
132 | mpeg3_complex_t ac3_w_8[8]; | ||
133 | mpeg3_complex_t ac3_w_16[16]; | ||
134 | mpeg3_complex_t ac3_w_32[32]; | ||
135 | mpeg3_complex_t ac3_w_64[64]; | ||
136 | #endif | ||
137 | int ac3_lfsr_state; | ||
138 | unsigned char ac3_buffer[MAX_AC3_FRAMESIZE]; | ||
139 | mpeg3ac3_stream_samples_t ac3_samples; | ||
140 | } mpeg3audio_t; | ||
141 | |||
142 | |||
143 | |||
144 | #endif | ||