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1 /******************************************************************************
2  *                                                                            *
3  * Copyright (C) 2018 The Android Open Source Project
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  *****************************************************************************
18  * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19 */
20 #ifndef LATM_DEMUX_H
21 #define LATM_DEMUX_H
22 
23 #define LATM_MAX_PROG 8
24 #define LATM_MAX_LAYER 8
25 #define LATM_MAX_VAR_CHUNKS 16
26 #define LATM_MAX_ID 16
27 
28 typedef struct {
29   AUDIO_OBJECT_TYPE aot;
30   UWORD32 sampling_freq_index;
31   UWORD32 sampling_freq;
32   WORD32 channel_config;
33   UWORD32 samples_per_frame;
34 } ixheaacd_latm_specs;
35 
36 typedef struct {
37   UWORD32 frame_len_type;
38   UWORD32 buffer_fullness;
39   UWORD32 frame_len_bits;
40   ixheaacd_latm_specs asc;
41 } ixheaacd_latm_layer_info;
42 
43 typedef struct {
44   UWORD32 use_same_stream_mux;
45   UWORD32 audio_mux_version;
46   UWORD32 all_streams_same_time_framing;
47   UWORD32 num_sub_frames;
48   UWORD32 num_program;
49   UWORD32 num_layer;
50   UWORD32 use_same_config;
51 
52   UWORD32 other_data_present;
53   UWORD32 other_data_length;
54   UWORD32 crc_check_present;
55   UWORD32 crc_check_sum;
56   UWORD32 frame_length;
57   ixheaacd_latm_layer_info layer_info[LATM_MAX_PROG][LATM_MAX_LAYER];
58 } ixheaacd_latm_struct;
59 
60 WORD32 ixheaacd_latm_au_chunk_length_info(ia_bit_buf_struct* it_bit_buff);
61 
62 WORD32 ixheaacd_latm_payload_length_info(ia_bit_buf_struct* it_bit_buff,
63                                          ixheaacd_latm_struct* latm_element);
64 
65 #endif
66