1 /******************************************************************************
2 * *
3 * Copyright (C) 2023 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
21 #include "ixheaac_type_def.h"
22 #include "ixheaac_constants.h"
23 #include "ixheaac_error_standards.h"
24 #include "ixheaace_error_codes.h"
25
26 #include "ixheaac_basic_ops32.h"
27 #include "ixheaac_basic_ops40.h"
28 #include "ixheaac_basic_ops.h"
29 #include "ixheaace_mps_common_define.h"
30 #include "ixheaace_mps_defines.h"
31 #include "ixheaace_mps_delay.h"
32 #include "ixheaace_mps_common_fix.h"
33
ixheaace_mps_212_delay_sub_calculate_buffer_delays(ixheaace_mps_pstr_delay pstr_delay)34 VOID ixheaace_mps_212_delay_sub_calculate_buffer_delays(ixheaace_mps_pstr_delay pstr_delay) {
35 WORD32 num_encoder_an_delay, num_encoder_win_delay, num_decoder_an_delay, num_decoder_syn_delay,
36 num_residual_coder_frame_delay, num_arb_dmx_residual_coder_frame_delay;
37 WORD32 temp_delay_1, temp_delay_2, temp_delay_12, temp_delay_3;
38
39 if (pstr_delay->delay_config.b_sac_time_alignment_dynamic_out > 0) {
40 pstr_delay->delay_config.n_sac_time_alignment = 0;
41 }
42
43 num_encoder_an_delay =
44 2 * pstr_delay->delay_config.num_qmf_len + pstr_delay->delay_config.num_qmf_len / 2;
45 num_decoder_an_delay =
46 2 * pstr_delay->delay_config.num_qmf_len + pstr_delay->delay_config.num_qmf_len / 2;
47 num_decoder_syn_delay =
48 1 * pstr_delay->delay_config.num_qmf_len + pstr_delay->delay_config.num_qmf_len / 2;
49 num_encoder_win_delay = pstr_delay->delay_config.num_frame_len / 2;
50 num_residual_coder_frame_delay = 0;
51 num_arb_dmx_residual_coder_frame_delay = 0;
52
53 temp_delay_1 =
54 pstr_delay->delay_config.n_arb_dmx_delay - pstr_delay->delay_config.n_surround_delay;
55 if (temp_delay_1 >= 0) {
56 pstr_delay->num_surround_analysis_buffer = temp_delay_1;
57 pstr_delay->num_arb_dmx_analysis_buffer = 0;
58 } else {
59 pstr_delay->num_surround_analysis_buffer = 0;
60 pstr_delay->num_arb_dmx_analysis_buffer = -temp_delay_1;
61 }
62
63 temp_delay_1 = num_encoder_win_delay + pstr_delay->delay_config.n_surround_delay +
64 pstr_delay->num_surround_analysis_buffer + num_encoder_an_delay;
65 temp_delay_2 = num_encoder_win_delay + pstr_delay->delay_config.n_arb_dmx_delay +
66 pstr_delay->num_arb_dmx_analysis_buffer + num_encoder_an_delay;
67 temp_delay_3 = pstr_delay->delay_config.n_arb_dmx_delay +
68 pstr_delay->delay_config.n_limiter_delay +
69 pstr_delay->delay_config.num_core_coder_delay +
70 pstr_delay->delay_config.n_sac_time_alignment + num_decoder_an_delay;
71
72 temp_delay_12 = MAX(num_residual_coder_frame_delay, num_arb_dmx_residual_coder_frame_delay) *
73 pstr_delay->delay_config.num_frame_len;
74 temp_delay_12 += pstr_delay->delay_config.num_sac_stream_mux_delay;
75
76 if (temp_delay_1 > temp_delay_2) {
77 temp_delay_12 += temp_delay_1;
78 } else {
79 temp_delay_12 += temp_delay_2;
80 }
81
82 if (temp_delay_3 > temp_delay_12) {
83 if (pstr_delay->delay_config.b_minimize_delay > 0) {
84 pstr_delay->num_bitstream_frame_buffer =
85 (temp_delay_3 - temp_delay_12) / pstr_delay->delay_config.num_frame_len;
86 pstr_delay->num_output_audio_buffer = 0;
87 pstr_delay->num_surround_analysis_buffer +=
88 (temp_delay_3 - temp_delay_12 -
89 (pstr_delay->num_bitstream_frame_buffer * pstr_delay->delay_config.num_frame_len));
90 pstr_delay->num_arb_dmx_analysis_buffer +=
91 (temp_delay_3 - temp_delay_12 -
92 (pstr_delay->num_bitstream_frame_buffer * pstr_delay->delay_config.num_frame_len));
93 } else {
94 pstr_delay->num_bitstream_frame_buffer =
95 ((temp_delay_3 - temp_delay_12) + pstr_delay->delay_config.num_frame_len - 1) /
96 pstr_delay->delay_config.num_frame_len;
97 pstr_delay->num_output_audio_buffer =
98 pstr_delay->num_bitstream_frame_buffer * pstr_delay->delay_config.num_frame_len +
99 temp_delay_12 - temp_delay_3;
100 }
101 } else {
102 pstr_delay->num_bitstream_frame_buffer = 0;
103 pstr_delay->num_output_audio_buffer = temp_delay_12 - temp_delay_3;
104 }
105
106 if (pstr_delay->delay_config.b_dmx_align > 0) {
107 WORD32 temp_delay =
108 pstr_delay->delay_config.n_arb_dmx_delay + pstr_delay->num_output_audio_buffer +
109 pstr_delay->delay_config.n_limiter_delay + pstr_delay->delay_config.num_core_coder_delay;
110 pstr_delay->num_discard_out_frames =
111 (temp_delay + pstr_delay->delay_config.num_frame_len - 1) /
112 pstr_delay->delay_config.num_frame_len;
113 pstr_delay->num_dmx_align_buffer =
114 pstr_delay->num_discard_out_frames * pstr_delay->delay_config.num_frame_len - temp_delay;
115 } else {
116 pstr_delay->num_discard_out_frames = 0;
117 pstr_delay->num_dmx_align_buffer = 0;
118 }
119
120 pstr_delay->num_info_dmx_delay = pstr_delay->delay_config.n_arb_dmx_delay +
121 pstr_delay->num_output_audio_buffer +
122 pstr_delay->delay_config.n_limiter_delay;
123 pstr_delay->num_info_codec_delay = pstr_delay->num_info_dmx_delay +
124 pstr_delay->delay_config.num_core_coder_delay +
125 pstr_delay->delay_config.n_sac_time_alignment +
126 num_decoder_an_delay + num_decoder_syn_delay;
127 pstr_delay->num_info_decoder_delay = num_decoder_an_delay + num_decoder_syn_delay;
128 pstr_delay->num_bitstream_frame_buffer_size = pstr_delay->num_bitstream_frame_buffer + 1;
129 }
130