diff options
Diffstat (limited to 'apps/codecs/libatrac/atrac3.h')
-rw-r--r-- | apps/codecs/libatrac/atrac3.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/apps/codecs/libatrac/atrac3.h b/apps/codecs/libatrac/atrac3.h new file mode 100644 index 0000000000..e4121d7b4e --- /dev/null +++ b/apps/codecs/libatrac/atrac3.h | |||
@@ -0,0 +1,80 @@ | |||
1 | #include "bitstream.h" | ||
2 | #include "../librm/rm.h" | ||
3 | |||
4 | /* These structures are needed to store the parsed gain control data. */ | ||
5 | typedef struct { | ||
6 | int num_gain_data; | ||
7 | int levcode[8]; | ||
8 | int loccode[8]; | ||
9 | } gain_info; | ||
10 | |||
11 | typedef struct { | ||
12 | gain_info gBlock[4]; | ||
13 | } gain_block; | ||
14 | |||
15 | typedef struct { | ||
16 | int pos; | ||
17 | int numCoefs; | ||
18 | int32_t coef[8]; | ||
19 | } tonal_component; | ||
20 | |||
21 | typedef struct { | ||
22 | int bandsCoded; | ||
23 | int numComponents; | ||
24 | tonal_component components[64]; | ||
25 | int32_t prevFrame[1024]; | ||
26 | int gcBlkSwitch; | ||
27 | gain_block gainBlock[2]; | ||
28 | |||
29 | int32_t spectrum[1024] __attribute__((aligned(16))); | ||
30 | int32_t IMDCT_buf[1024] __attribute__((aligned(16))); | ||
31 | |||
32 | int32_t delayBuf1[46]; ///<qmf delay buffers | ||
33 | int32_t delayBuf2[46]; | ||
34 | int32_t delayBuf3[46]; | ||
35 | } channel_unit; | ||
36 | |||
37 | typedef struct { | ||
38 | GetBitContext gb; | ||
39 | //@{ | ||
40 | /** stream data */ | ||
41 | int channels; | ||
42 | int codingMode; | ||
43 | int bit_rate; | ||
44 | int sample_rate; | ||
45 | int samples_per_channel; | ||
46 | int samples_per_frame; | ||
47 | |||
48 | int bits_per_frame; | ||
49 | int bytes_per_frame; | ||
50 | int pBs; | ||
51 | channel_unit* pUnits; | ||
52 | //@} | ||
53 | //@{ | ||
54 | /** joint-stereo related variables */ | ||
55 | int matrix_coeff_index_prev[4]; | ||
56 | int matrix_coeff_index_now[4]; | ||
57 | int matrix_coeff_index_next[4]; | ||
58 | int weighting_delay[6]; | ||
59 | //@} | ||
60 | //@{ | ||
61 | /** data buffers */ | ||
62 | int32_t outSamples[2048]; | ||
63 | uint8_t decoded_bytes_buffer[1024]; | ||
64 | int32_t tempBuf[1070]; | ||
65 | //@} | ||
66 | //@{ | ||
67 | /** extradata */ | ||
68 | int atrac3version; | ||
69 | int delay; | ||
70 | int scrambled_stream; | ||
71 | int frame_factor; | ||
72 | //@} | ||
73 | } ATRAC3Context; | ||
74 | |||
75 | int atrac3_decode_init(ATRAC3Context *q, RMContext *rmctx); | ||
76 | |||
77 | int atrac3_decode_frame(RMContext *rmctx, ATRAC3Context *q, | ||
78 | void *data, int *data_size, | ||
79 | const uint8_t *buf, int buf_size); | ||
80 | |||