48e2f01c |
1 | /* |
2 | * Copyright (C) 2013 nu774 |
3 | * For conditions of distribution and use, see copyright notice in COPYING |
4 | */ |
5 | #if HAVE_CONFIG_H |
6 | # include "config.h" |
7 | #endif |
8 | #if HAVE_STDINT_H |
9 | # include <stdint.h> |
10 | #endif |
11 | #include <stdio.h> |
12 | #include <stdlib.h> |
13 | #include "aacenc.h" |
14 | |
15 | int aacenc_is_sbr_active(const aacenc_param_t *params) |
16 | { |
17 | switch (params->profile) { |
18 | case AOT_SBR: case AOT_PS: case AOT_MP2_SBR: case AOT_MP2_PS: |
19 | case AOT_DABPLUS_SBR: case AOT_DABPLUS_PS: |
20 | case AOT_DRM_SBR: case AOT_DRM_MPEG_PS: |
21 | return 1; |
22 | } |
23 | if (params->profile == AOT_ER_AAC_ELD && params->lowdelay_sbr) |
24 | return 1; |
25 | return 0; |
26 | } |
27 | |
28 | static |
29 | int aacenc_channel_mode(const pcm_sample_description_t *format) |
30 | { |
31 | uint32_t chanmask = format->channel_mask; |
32 | |
33 | if (format->channels_per_frame > 6) |
34 | return 0; |
35 | if (!chanmask) { |
36 | static uint32_t defaults[] = { 0x4, 0x3, 0x7, 0, 0x37, 0x3f }; |
37 | chanmask = defaults[format->channels_per_frame - 1]; |
38 | } |
39 | switch (chanmask) { |
40 | case 0x3: return MODE_2; |
41 | case 0x4: return MODE_1; |
42 | case 0x7: return MODE_1_2; |
43 | case 0x37: return MODE_1_2_2; |
44 | case 0x3f: return MODE_1_2_2_1; |
45 | case 0x107: return MODE_1_2_1; |
46 | case 0x607: return MODE_1_2_2; |
47 | case 0x60f: return MODE_1_2_2_1; |
48 | } |
49 | return 0; |
50 | } |
51 | |
52 | int aacenc_init(HANDLE_AACENCODER *encoder, const aacenc_param_t *params, |
53 | const pcm_sample_description_t *format, |
54 | AACENC_InfoStruct *info) |
55 | { |
56 | int channel_mode; |
57 | int aot; |
58 | |
59 | *encoder = 0; |
60 | if ((channel_mode = aacenc_channel_mode(format)) == 0) { |
61 | fprintf(stderr, "ERROR: unsupported channel layout\n"); |
62 | goto FAIL; |
63 | } |
64 | if (aacEncOpen(encoder, 0, 0) != AACENC_OK) { |
65 | fprintf(stderr, "ERROR: aacEncOpen() failed\n"); |
66 | goto FAIL; |
67 | } |
68 | aot = (params->profile ? params->profile : AOT_AAC_LC); |
69 | if (aacEncoder_SetParam(*encoder, AACENC_AOT, aot) != AACENC_OK) { |
70 | fprintf(stderr, "ERROR: unsupported profile\n"); |
71 | goto FAIL; |
72 | } |
73 | if (params->bitrate_mode == 0) |
74 | aacEncoder_SetParam(*encoder, AACENC_BITRATE, params->bitrate); |
75 | else if (aacEncoder_SetParam(*encoder, AACENC_BITRATEMODE, |
76 | params->bitrate_mode) != AACENC_OK) { |
77 | fprintf(stderr, "ERROR: unsupported bitrate mode\n"); |
78 | goto FAIL; |
79 | } |
80 | if (aacEncoder_SetParam(*encoder, AACENC_SAMPLERATE, |
81 | format->sample_rate) != AACENC_OK) { |
82 | fprintf(stderr, "ERROR: unsupported sample rate\n"); |
83 | goto FAIL; |
84 | } |
85 | aacEncoder_SetParam(*encoder, AACENC_CHANNELMODE, channel_mode); |
86 | aacEncoder_SetParam(*encoder, AACENC_BANDWIDTH, params->bandwidth); |
87 | aacEncoder_SetParam(*encoder, AACENC_CHANNELORDER, 1); |
88 | aacEncoder_SetParam(*encoder, AACENC_AFTERBURNER, !!params->afterburner); |
89 | |
90 | if (aot == AOT_ER_AAC_ELD && params->lowdelay_sbr) |
91 | aacEncoder_SetParam(*encoder, AACENC_SBR_MODE, 1); |
92 | |
93 | if (aacEncoder_SetParam(*encoder, AACENC_TRANSMUX, |
94 | params->transport_format) != AACENC_OK) { |
95 | fprintf(stderr, "ERROR: unsupported transport format\n"); |
96 | goto FAIL; |
97 | } |
98 | if (aacEncoder_SetParam(*encoder, AACENC_SIGNALING_MODE, |
99 | params->sbr_signaling) != AACENC_OK) { |
100 | fprintf(stderr, "ERROR: unsupported transport format\n"); |
101 | goto FAIL; |
102 | } |
103 | if (params->adts_crc_check) |
104 | aacEncoder_SetParam(*encoder, AACENC_PROTECTION, 1); |
105 | if (params->header_period) |
106 | aacEncoder_SetParam(*encoder, AACENC_HEADER_PERIOD, |
107 | params->header_period); |
108 | |
109 | if (aacEncEncode(*encoder, 0, 0, 0, 0) != AACENC_OK) { |
110 | fprintf(stderr, "ERROR: encoder initialization failed\n"); |
111 | goto FAIL; |
112 | } |
113 | if (aacEncInfo(*encoder, info) != AACENC_OK) { |
114 | fprintf(stderr, "ERROR: cannot retrieve encoder info\n"); |
115 | goto FAIL; |
116 | } |
117 | return 0; |
118 | FAIL: |
119 | if (encoder) |
120 | aacEncClose(encoder); |
121 | return -1; |
122 | } |
123 | |
124 | int aac_encode_frame(HANDLE_AACENCODER encoder, |
125 | const pcm_sample_description_t *format, |
126 | const int16_t *input, unsigned iframes, |
127 | uint8_t **output, uint32_t *olen, uint32_t *osize) |
128 | { |
129 | uint32_t ilen = iframes * format->channels_per_frame; |
130 | AACENC_BufDesc ibdesc = { 0 }, obdesc = { 0 }; |
131 | AACENC_InArgs iargs = { 0 }; |
132 | AACENC_OutArgs oargs = { 0 }; |
133 | void *ibufs[] = { (void*)input }; |
134 | void *obufs[1]; |
135 | INT ibuf_ids[] = { IN_AUDIO_DATA }; |
136 | INT obuf_ids[] = { OUT_BITSTREAM_DATA }; |
137 | INT ibuf_sizes[] = { ilen * sizeof(int16_t) }; |
138 | INT obuf_sizes[1]; |
139 | INT ibuf_el_sizes[] = { sizeof(int16_t) }; |
140 | INT obuf_el_sizes[] = { 1 }; |
141 | AACENC_ERROR err; |
142 | unsigned channel_mode, obytes; |
143 | |
144 | channel_mode = aacEncoder_GetParam(encoder, AACENC_CHANNELMODE); |
d52b8bbf |
145 | obytes = 6144 / 8 * channel_mode + 7; |
48e2f01c |
146 | if (!*output || *osize < obytes) { |
147 | *osize = obytes; |
148 | *output = realloc(*output, obytes); |
149 | } |
150 | obufs[0] = *output; |
151 | obuf_sizes[0] = obytes; |
152 | |
153 | iargs.numInSamples = ilen ? ilen : -1; /* -1 for signaling EOF */ |
154 | ibdesc.numBufs = 1; |
155 | ibdesc.bufs = ibufs; |
156 | ibdesc.bufferIdentifiers = ibuf_ids; |
157 | ibdesc.bufSizes = ibuf_sizes; |
158 | ibdesc.bufElSizes = ibuf_el_sizes; |
159 | obdesc.numBufs = 1; |
160 | obdesc.bufs = obufs; |
161 | obdesc.bufferIdentifiers = obuf_ids; |
162 | obdesc.bufSizes = obuf_sizes; |
163 | obdesc.bufElSizes = obuf_el_sizes; |
164 | |
165 | err = aacEncEncode(encoder, &ibdesc, &obdesc, &iargs, &oargs); |
166 | if (err != AACENC_ENCODE_EOF && err != AACENC_OK) { |
167 | fprintf(stderr, "ERROR: aacEncEncode() failed\n"); |
168 | return -1; |
169 | } |
170 | *olen = oargs.numOutBytes; |
171 | return oargs.numInSamples; |
172 | } |