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 | } |