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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> | |
9b8f9915 | 13 | #include <string.h> |
48e2f01c | 14 | #include "aacenc.h" |
15 | ||
e1adc178 | 16 | int aacenc_is_sbr_ratio_available() |
17 | { | |
18 | #if AACENCODER_LIB_VL0 < 3 || (AACENCODER_LIB_VL0==3 && AACENCODER_LIB_VL1<4) | |
19 | return 0; | |
20 | #else | |
21 | LIB_INFO lib_info; | |
22 | aacenc_get_lib_info(&lib_info); | |
23 | return lib_info.version > 0x03040000; | |
24 | #endif | |
25 | } | |
26 | ||
48e2f01c | 27 | int aacenc_is_sbr_active(const aacenc_param_t *params) |
28 | { | |
29 | switch (params->profile) { | |
30 | case AOT_SBR: case AOT_PS: case AOT_MP2_SBR: case AOT_MP2_PS: | |
31 | case AOT_DABPLUS_SBR: case AOT_DABPLUS_PS: | |
32 | case AOT_DRM_SBR: case AOT_DRM_MPEG_PS: | |
33 | return 1; | |
34 | } | |
35 | if (params->profile == AOT_ER_AAC_ELD && params->lowdelay_sbr) | |
36 | return 1; | |
37 | return 0; | |
38 | } | |
39 | ||
e1adc178 | 40 | int aacenc_is_dual_rate_sbr(const aacenc_param_t *params) |
41 | { | |
42 | if (params->profile == AOT_PS || params->profile == AOT_MP2_PS) | |
43 | return 1; | |
44 | else if (params->profile == AOT_SBR || params->profile == AOT_MP2_SBR) | |
45 | return params->sbr_ratio == 0 || params->sbr_ratio == 2; | |
46 | else if (params->profile == AOT_ER_AAC_ELD && params->lowdelay_sbr) | |
47 | return params->sbr_ratio == 2; | |
48 | return 0; | |
49 | } | |
50 | ||
51 | void aacenc_get_lib_info(LIB_INFO *info) | |
52 | { | |
53 | LIB_INFO *lib_info = 0; | |
54 | lib_info = calloc(FDK_MODULE_LAST, sizeof(LIB_INFO)); | |
55 | if (aacEncGetLibInfo(lib_info) == AACENC_OK) { | |
56 | int i; | |
57 | for (i = 0; i < FDK_MODULE_LAST; ++i) { | |
58 | if (lib_info[i].module_id == FDK_AACENC) { | |
59 | memcpy(info, &lib_info[i], sizeof(LIB_INFO)); | |
60 | break; | |
61 | } | |
62 | } | |
63 | } | |
64 | free(lib_info); | |
65 | } | |
66 | ||
48e2f01c | 67 | static |
68 | int aacenc_channel_mode(const pcm_sample_description_t *format) | |
69 | { | |
70 | uint32_t chanmask = format->channel_mask; | |
71 | ||
3c0f152d | 72 | if (format->channels_per_frame > 8) |
48e2f01c | 73 | return 0; |
74 | if (!chanmask) { | |
3c0f152d | 75 | static uint32_t defaults[] = { 0x4, 0x3, 0x7, 0, 0x37, 0x3f, 0, 0x63f }; |
48e2f01c | 76 | chanmask = defaults[format->channels_per_frame - 1]; |
77 | } | |
78 | switch (chanmask) { | |
79 | case 0x3: return MODE_2; | |
80 | case 0x4: return MODE_1; | |
81 | case 0x7: return MODE_1_2; | |
82 | case 0x37: return MODE_1_2_2; | |
83 | case 0x3f: return MODE_1_2_2_1; | |
84 | case 0x107: return MODE_1_2_1; | |
85 | case 0x607: return MODE_1_2_2; | |
86 | case 0x60f: return MODE_1_2_2_1; | |
3c0f152d | 87 | #if AACENCODER_LIB_VL0 > 3 || (AACENCODER_LIB_VL0==3 && AACENCODER_LIB_VL1>=4) |
88 | case 0xff: return MODE_1_2_2_2_1; | |
89 | case 0x63f: return MODE_7_1_REAR_SURROUND; | |
90 | #endif | |
48e2f01c | 91 | } |
92 | return 0; | |
93 | } | |
94 | ||
95 | int aacenc_init(HANDLE_AACENCODER *encoder, const aacenc_param_t *params, | |
96 | const pcm_sample_description_t *format, | |
97 | AACENC_InfoStruct *info) | |
98 | { | |
99 | int channel_mode; | |
100 | int aot; | |
e1adc178 | 101 | LIB_INFO lib_info; |
48e2f01c | 102 | |
103 | *encoder = 0; | |
e1adc178 | 104 | aacenc_get_lib_info(&lib_info); |
105 | ||
48e2f01c | 106 | if ((channel_mode = aacenc_channel_mode(format)) == 0) { |
107 | fprintf(stderr, "ERROR: unsupported channel layout\n"); | |
108 | goto FAIL; | |
109 | } | |
110 | if (aacEncOpen(encoder, 0, 0) != AACENC_OK) { | |
111 | fprintf(stderr, "ERROR: aacEncOpen() failed\n"); | |
112 | goto FAIL; | |
113 | } | |
114 | aot = (params->profile ? params->profile : AOT_AAC_LC); | |
115 | if (aacEncoder_SetParam(*encoder, AACENC_AOT, aot) != AACENC_OK) { | |
116 | fprintf(stderr, "ERROR: unsupported profile\n"); | |
117 | goto FAIL; | |
118 | } | |
119 | if (params->bitrate_mode == 0) | |
120 | aacEncoder_SetParam(*encoder, AACENC_BITRATE, params->bitrate); | |
121 | else if (aacEncoder_SetParam(*encoder, AACENC_BITRATEMODE, | |
122 | params->bitrate_mode) != AACENC_OK) { | |
123 | fprintf(stderr, "ERROR: unsupported bitrate mode\n"); | |
124 | goto FAIL; | |
125 | } | |
126 | if (aacEncoder_SetParam(*encoder, AACENC_SAMPLERATE, | |
127 | format->sample_rate) != AACENC_OK) { | |
128 | fprintf(stderr, "ERROR: unsupported sample rate\n"); | |
129 | goto FAIL; | |
130 | } | |
e1adc178 | 131 | if (aacEncoder_SetParam(*encoder, AACENC_CHANNELMODE, |
132 | channel_mode) != AACENC_OK) { | |
133 | fprintf(stderr, "ERROR: unsupported channel mode\n"); | |
134 | goto FAIL; | |
135 | } | |
48e2f01c | 136 | aacEncoder_SetParam(*encoder, AACENC_BANDWIDTH, params->bandwidth); |
137 | aacEncoder_SetParam(*encoder, AACENC_CHANNELORDER, 1); | |
138 | aacEncoder_SetParam(*encoder, AACENC_AFTERBURNER, !!params->afterburner); | |
139 | ||
e1adc178 | 140 | aacEncoder_SetParam(*encoder, AACENC_SBR_MODE, params->lowdelay_sbr); |
141 | ||
142 | #if AACENCODER_LIB_VL0 > 3 || (AACENCODER_LIB_VL0==3 && AACENCODER_LIB_VL1>=4) | |
143 | if (lib_info.version > 0x03040000) | |
144 | aacEncoder_SetParam(*encoder, AACENC_SBR_RATIO, params->sbr_ratio); | |
145 | #endif | |
48e2f01c | 146 | |
147 | if (aacEncoder_SetParam(*encoder, AACENC_TRANSMUX, | |
148 | params->transport_format) != AACENC_OK) { | |
149 | fprintf(stderr, "ERROR: unsupported transport format\n"); | |
150 | goto FAIL; | |
151 | } | |
152 | if (aacEncoder_SetParam(*encoder, AACENC_SIGNALING_MODE, | |
153 | params->sbr_signaling) != AACENC_OK) { | |
f5363b23 | 154 | fprintf(stderr, "ERROR: failed to set SBR signaling mode\n"); |
48e2f01c | 155 | goto FAIL; |
156 | } | |
157 | if (params->adts_crc_check) | |
158 | aacEncoder_SetParam(*encoder, AACENC_PROTECTION, 1); | |
159 | if (params->header_period) | |
160 | aacEncoder_SetParam(*encoder, AACENC_HEADER_PERIOD, | |
161 | params->header_period); | |
162 | ||
163 | if (aacEncEncode(*encoder, 0, 0, 0, 0) != AACENC_OK) { | |
164 | fprintf(stderr, "ERROR: encoder initialization failed\n"); | |
165 | goto FAIL; | |
166 | } | |
167 | if (aacEncInfo(*encoder, info) != AACENC_OK) { | |
168 | fprintf(stderr, "ERROR: cannot retrieve encoder info\n"); | |
169 | goto FAIL; | |
170 | } | |
171 | return 0; | |
172 | FAIL: | |
173 | if (encoder) | |
174 | aacEncClose(encoder); | |
175 | return -1; | |
176 | } | |
177 | ||
178 | int aac_encode_frame(HANDLE_AACENCODER encoder, | |
179 | const pcm_sample_description_t *format, | |
180 | const int16_t *input, unsigned iframes, | |
d533c8e0 | 181 | aacenc_frame_t *output) |
48e2f01c | 182 | { |
183 | uint32_t ilen = iframes * format->channels_per_frame; | |
184 | AACENC_BufDesc ibdesc = { 0 }, obdesc = { 0 }; | |
185 | AACENC_InArgs iargs = { 0 }; | |
186 | AACENC_OutArgs oargs = { 0 }; | |
187 | void *ibufs[] = { (void*)input }; | |
188 | void *obufs[1]; | |
189 | INT ibuf_ids[] = { IN_AUDIO_DATA }; | |
190 | INT obuf_ids[] = { OUT_BITSTREAM_DATA }; | |
191 | INT ibuf_sizes[] = { ilen * sizeof(int16_t) }; | |
192 | INT obuf_sizes[1]; | |
193 | INT ibuf_el_sizes[] = { sizeof(int16_t) }; | |
194 | INT obuf_el_sizes[] = { 1 }; | |
195 | AACENC_ERROR err; | |
196 | unsigned channel_mode, obytes; | |
197 | ||
198 | channel_mode = aacEncoder_GetParam(encoder, AACENC_CHANNELMODE); | |
3b518efd | 199 | obytes = 6144 / 8 * channel_mode; |
d533c8e0 | 200 | if (!output->data || output->capacity < obytes) { |
3b518efd | 201 | uint8_t *p = realloc(output->data, obytes); |
202 | if (!p) return -1; | |
d533c8e0 | 203 | output->capacity = obytes; |
3b518efd | 204 | output->data = p; |
48e2f01c | 205 | } |
3b518efd | 206 | obufs[0] = output->data; |
48e2f01c | 207 | obuf_sizes[0] = obytes; |
208 | ||
209 | iargs.numInSamples = ilen ? ilen : -1; /* -1 for signaling EOF */ | |
210 | ibdesc.numBufs = 1; | |
211 | ibdesc.bufs = ibufs; | |
212 | ibdesc.bufferIdentifiers = ibuf_ids; | |
213 | ibdesc.bufSizes = ibuf_sizes; | |
214 | ibdesc.bufElSizes = ibuf_el_sizes; | |
215 | obdesc.numBufs = 1; | |
216 | obdesc.bufs = obufs; | |
217 | obdesc.bufferIdentifiers = obuf_ids; | |
218 | obdesc.bufSizes = obuf_sizes; | |
219 | obdesc.bufElSizes = obuf_el_sizes; | |
220 | ||
221 | err = aacEncEncode(encoder, &ibdesc, &obdesc, &iargs, &oargs); | |
222 | if (err != AACENC_ENCODE_EOF && err != AACENC_OK) { | |
223 | fprintf(stderr, "ERROR: aacEncEncode() failed\n"); | |
224 | return -1; | |
225 | } | |
d533c8e0 | 226 | output->size = oargs.numOutBytes; |
4d48b091 | 227 | return oargs.numInSamples / format->channels_per_frame; |
48e2f01c | 228 | } |