Originally committed as revision 19133 to svn://svn.ffmpeg.org/ffmpeg/branches/0.5
Diego Biurrun authored on 2009/06/08 05:14:56... | ... |
@@ -9,6 +9,7 @@ version 0.5.1: |
9 | 9 |
- fix for GPL code in libswscale that was erroneously activated |
10 | 10 |
- AltiVec code in libswscale is now LGPL |
11 | 11 |
- remaining GPL parts in AC-3 decoder converted to LGPL |
12 |
+- AMR-NB decoding/encoding, AMR-WB decoding via OpenCORE libraries |
|
12 | 13 |
|
13 | 14 |
|
14 | 15 |
|
... | ... |
@@ -39,6 +39,11 @@ Some external libraries, e.g. libx264, are under GPL and can be used in |
39 | 39 |
conjunction with FFmpeg. They require --enable-gpl to be passed to configure |
40 | 40 |
as well. |
41 | 41 |
|
42 |
+The OpenCORE external libraries are under the Apache License 2.0. That license |
|
43 |
+is incompatible with the LGPL v2.1 and the GPL v2, but not with version 3 of |
|
44 |
+those licenses. So to combine the OpenCORE libraries with FFmpeg, the license |
|
45 |
+version needs to be upgraded by passing --enable-version3 to configure. |
|
46 |
+ |
|
42 | 47 |
The nonfree external libraries libamrnb, libamrwb and libfaac can be hooked up |
43 | 48 |
in FFmpeg. You need to pass --enable-nonfree to configure to enable them. Employ |
44 | 49 |
this option with care as FFmpeg then becomes nonfree and unredistributable. |
... | ... |
@@ -149,6 +149,8 @@ show_help(){ |
149 | 149 |
echo " --enable-bzlib enable bzlib [autodetect]" |
150 | 150 |
echo " --enable-libamr-nb enable libamr-nb floating point audio codec [no]" |
151 | 151 |
echo " --enable-libamr-wb enable libamr-wb floating point audio codec [no]" |
152 |
+ echo " --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]" |
|
153 |
+ echo " --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]" |
|
152 | 154 |
echo " --enable-libdc1394 enable IIDC-1394 grabbing using libdc1394" |
153 | 155 |
echo " and libraw1394 [no]" |
154 | 156 |
echo " --enable-libdirac enable Dirac support via libdirac [no]" |
... | ... |
@@ -780,6 +782,8 @@ CONFIG_LIST=" |
780 | 780 |
libgsm |
781 | 781 |
libmp3lame |
782 | 782 |
libnut |
783 |
+ libopencore_amrnb |
|
784 |
+ libopencore_amrwb |
|
783 | 785 |
libopenjpeg |
784 | 786 |
libschroedinger |
785 | 787 |
libspeex |
... | ... |
@@ -1079,6 +1083,9 @@ libgsm_encoder_deps="libgsm" |
1079 | 1079 |
libgsm_ms_decoder_deps="libgsm" |
1080 | 1080 |
libgsm_ms_encoder_deps="libgsm" |
1081 | 1081 |
libmp3lame_encoder_deps="libmp3lame" |
1082 |
+libopencore_amrnb_decoder_deps="libopencore_amrnb" |
|
1083 |
+libopencore_amrnb_encoder_deps="libopencore_amrnb" |
|
1084 |
+libopencore_amrwb_decoder_deps="libopencore_amrwb" |
|
1082 | 1085 |
libopenjpeg_decoder_deps="libopenjpeg" |
1083 | 1086 |
libschroedinger_decoder_deps="libschroedinger" |
1084 | 1087 |
libschroedinger_encoder_deps="libschroedinger" |
... | ... |
@@ -1699,6 +1706,9 @@ die_license_disabled nonfree libamr_nb |
1699 | 1699 |
die_license_disabled nonfree libamr_wb |
1700 | 1700 |
die_license_disabled nonfree libfaac |
1701 | 1701 |
|
1702 |
+die_license_disabled version3 libopencore_amrnb |
|
1703 |
+die_license_disabled version3 libopencore_amrwb |
|
1704 |
+ |
|
1702 | 1705 |
enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; } |
1703 | 1706 |
|
1704 | 1707 |
check_deps $ARCH_EXT_LIST |
... | ... |
@@ -1990,6 +2000,8 @@ enabled libfaad && require2 libfaad faad.h faacDecOpen -lfaad |
1990 | 1990 |
enabled libgsm && require libgsm gsm.h gsm_create -lgsm |
1991 | 1991 |
enabled libmp3lame && require libmp3lame lame/lame.h lame_init -lmp3lame -lm |
1992 | 1992 |
enabled libnut && require libnut libnut.h nut_demuxer_init -lnut |
1993 |
+enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb -lm |
|
1994 |
+enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb -lm |
|
1993 | 1995 |
enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg |
1994 | 1996 |
enabled libschroedinger && add_cflags $(pkg-config --cflags schroedinger-1.0) && |
1995 | 1997 |
require libschroedinger schroedinger/schro.h schro_init $(pkg-config --libs schroedinger-1.0) |
... | ... |
@@ -2317,6 +2329,8 @@ echo "libfaad dlopened ${libfaadbin-no}" |
2317 | 2317 |
echo "libgsm enabled ${libgsm-no}" |
2318 | 2318 |
echo "libmp3lame enabled ${libmp3lame-no}" |
2319 | 2319 |
echo "libnut enabled ${libnut-no}" |
2320 |
+echo "libopencore-amrnb support ${libopencore_amrnb-no}" |
|
2321 |
+echo "libopencore-amrwb support ${libopencore_amrwb-no}" |
|
2320 | 2322 |
echo "libopenjpeg enabled ${libopenjpeg-no}" |
2321 | 2323 |
echo "libschroedinger enabled ${libschroedinger-no}" |
2322 | 2324 |
echo "libspeex enabled ${libspeex-no}" |
... | ... |
@@ -18,7 +18,22 @@ explicitly requested by passing the appropriate flags to @file{./configure}. |
18 | 18 |
|
19 | 19 |
AMR comes in two different flavors, wideband and narrowband. FFmpeg can make |
20 | 20 |
use of the AMR wideband (floating-point mode) and the AMR narrowband |
21 |
-(floating-point mode) reference decoders and encoders. |
|
21 |
+(floating-point mode) reference decoders and encoders (libamr) as well as |
|
22 |
+the OpenCORE libraries for AMR-NB decoding/encoding and AMR-WB decoding. |
|
23 |
+ |
|
24 |
+@subsection OpenCORE |
|
25 |
+ |
|
26 |
+Go to @url{http://gitorious.org/opencore-amr/} and follow the instructions for |
|
27 |
+installing the libraries. Then pass @code{--enable-libopencore-amrnb} and/or |
|
28 |
+@code{--enable-libopencore-amrwb} to configure to enable the libraries. |
|
29 |
+ |
|
30 |
+Note that OpenCORE is under the Apache License 2.0 (see |
|
31 |
+@url{http://www.apache.org/licenses/LICENSE-2.0} for details), which is |
|
32 |
+incompatible with the LGPL version 2.1 and GPL version 2. You have to |
|
33 |
+upgrade FFmpeg's license to LGPL version 3 (or if you have enabled |
|
34 |
+GPL components, GPL version 3) to use it. |
|
35 |
+ |
|
36 |
+@subsection libamr |
|
22 | 37 |
|
23 | 38 |
Go to @url{http://www.penguin.cz/~utx/amr} and follow the instructions for |
24 | 39 |
installing the libraries. Then pass @code{--enable-libamr-nb} and/or |
... | ... |
@@ -511,9 +526,10 @@ following image formats are supported: |
511 | 511 |
@tab Used in Westwood Studios games like Command and Conquer. |
512 | 512 |
@item ADPCM Yamaha @tab X @tab X |
513 | 513 |
@item AMR-NB @tab E @tab E |
514 |
- @tab supported through external library libamrnb |
|
514 |
+ @tab supported through external libraries libamrnb and libopencore-amrnb |
|
515 | 515 |
@item AMR-WB @tab E @tab E |
516 |
- @tab supported through external library libamrwb |
|
516 |
+ @tab decoding supported through external libraries libamrwb and libopencore-amrwb, |
|
517 |
+ encoding supported through external library libamrwb |
|
517 | 518 |
@item Apple lossless audio @tab X @tab X |
518 | 519 |
@tab QuickTime fourcc 'alac' |
519 | 520 |
@item Atrac 3 @tab @tab X |
... | ... |
@@ -366,6 +366,8 @@ OBJS-$(CONFIG_LIBFAAC) += libfaac.o |
366 | 366 |
OBJS-$(CONFIG_LIBFAAD) += libfaad.o |
367 | 367 |
OBJS-$(CONFIG_LIBGSM) += libgsm.o |
368 | 368 |
OBJS-$(CONFIG_LIBMP3LAME) += libmp3lame.o |
369 |
+OBJS-$(CONFIG_LIBOPENCORE_AMRNB) += libopencore-amr.o |
|
370 |
+OBJS-$(CONFIG_LIBOPENCORE_AMRWB) += libopencore-amr.o |
|
369 | 371 |
OBJS-$(CONFIG_LIBOPENJPEG) += libopenjpeg.o |
370 | 372 |
OBJS-$(CONFIG_LIBSCHROEDINGER_DECODER) += libschroedingerdec.o libschroedinger.o libdirac_libschro.o |
371 | 373 |
OBJS-$(CONFIG_LIBSCHROEDINGER_ENCODER) += libschroedingerenc.o libschroedinger.o libdirac_libschro.o |
... | ... |
@@ -294,6 +294,8 @@ void avcodec_register_all(void) |
294 | 294 |
REGISTER_ENCDEC (LIBGSM, libgsm); |
295 | 295 |
REGISTER_ENCDEC (LIBGSM_MS, libgsm_ms); |
296 | 296 |
REGISTER_ENCODER (LIBMP3LAME, libmp3lame); |
297 |
+ REGISTER_ENCDEC (LIBOPENCORE_AMRNB, libopencore_amrnb); |
|
298 |
+ REGISTER_DECODER (LIBOPENCORE_AMRWB, libopencore_amrwb); |
|
297 | 299 |
REGISTER_DECODER (LIBOPENJPEG, libopenjpeg); |
298 | 300 |
REGISTER_ENCDEC (LIBSCHROEDINGER, libschroedinger); |
299 | 301 |
REGISTER_DECODER (LIBSPEEX, libspeex); |
300 | 302 |
new file mode 100644 |
... | ... |
@@ -0,0 +1,325 @@ |
0 |
+/* |
|
1 |
+ * AMR Audio decoder stub |
|
2 |
+ * Copyright (c) 2003 the ffmpeg project |
|
3 |
+ * |
|
4 |
+ * This file is part of FFmpeg. |
|
5 |
+ * |
|
6 |
+ * FFmpeg is free software; you can redistribute it and/or |
|
7 |
+ * modify it under the terms of the GNU Lesser General Public |
|
8 |
+ * License as published by the Free Software Foundation; either |
|
9 |
+ * version 2.1 of the License, or (at your option) any later version. |
|
10 |
+ * |
|
11 |
+ * FFmpeg is distributed in the hope that it will be useful, |
|
12 |
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
13 |
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
14 |
+ * Lesser General Public License for more details. |
|
15 |
+ * |
|
16 |
+ * You should have received a copy of the GNU Lesser General Public |
|
17 |
+ * License along with FFmpeg; if not, write to the Free Software |
|
18 |
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
19 |
+ */ |
|
20 |
+ |
|
21 |
+#include "avcodec.h" |
|
22 |
+ |
|
23 |
+static void amr_decode_fix_avctx(AVCodecContext *avctx) |
|
24 |
+{ |
|
25 |
+ const int is_amr_wb = 1 + (avctx->codec_id == CODEC_ID_AMR_WB); |
|
26 |
+ |
|
27 |
+ if (!avctx->sample_rate) |
|
28 |
+ avctx->sample_rate = 8000 * is_amr_wb; |
|
29 |
+ |
|
30 |
+ if (!avctx->channels) |
|
31 |
+ avctx->channels = 1; |
|
32 |
+ |
|
33 |
+ avctx->frame_size = 160 * is_amr_wb; |
|
34 |
+ avctx->sample_fmt = SAMPLE_FMT_S16; |
|
35 |
+} |
|
36 |
+ |
|
37 |
+#if CONFIG_LIBOPENCORE_AMRNB |
|
38 |
+ |
|
39 |
+#include <opencore-amrnb/interf_dec.h> |
|
40 |
+#include <opencore-amrnb/interf_enc.h> |
|
41 |
+ |
|
42 |
+static const char nb_bitrate_unsupported[] = |
|
43 |
+ "bitrate not supported: use one of 4.75k, 5.15k, 5.9k, 6.7k, 7.4k, 7.95k, 10.2k or 12.2k\n"; |
|
44 |
+ |
|
45 |
+/* Common code for fixed and float version*/ |
|
46 |
+typedef struct AMR_bitrates { |
|
47 |
+ int rate; |
|
48 |
+ enum Mode mode; |
|
49 |
+} AMR_bitrates; |
|
50 |
+ |
|
51 |
+/* Match desired bitrate */ |
|
52 |
+static int getBitrateMode(int bitrate) |
|
53 |
+{ |
|
54 |
+ /* make the correspondance between bitrate and mode */ |
|
55 |
+ AMR_bitrates rates[] = { { 4750, MR475}, |
|
56 |
+ { 5150, MR515}, |
|
57 |
+ { 5900, MR59}, |
|
58 |
+ { 6700, MR67}, |
|
59 |
+ { 7400, MR74}, |
|
60 |
+ { 7950, MR795}, |
|
61 |
+ {10200, MR102}, |
|
62 |
+ {12200, MR122}, }; |
|
63 |
+ int i; |
|
64 |
+ |
|
65 |
+ for (i = 0; i < 8; i++) |
|
66 |
+ if (rates[i].rate == bitrate) |
|
67 |
+ return rates[i].mode; |
|
68 |
+ /* no bitrate matching, return an error */ |
|
69 |
+ return -1; |
|
70 |
+} |
|
71 |
+ |
|
72 |
+typedef struct AMRContext { |
|
73 |
+ int frameCount; |
|
74 |
+ void *decState; |
|
75 |
+ int *enstate; |
|
76 |
+ int enc_bitrate; |
|
77 |
+} AMRContext; |
|
78 |
+ |
|
79 |
+static av_cold int amr_nb_decode_init(AVCodecContext *avctx) |
|
80 |
+{ |
|
81 |
+ AMRContext *s = avctx->priv_data; |
|
82 |
+ |
|
83 |
+ s->frameCount = 0; |
|
84 |
+ s->decState = Decoder_Interface_init(); |
|
85 |
+ if (!s->decState) { |
|
86 |
+ av_log(avctx, AV_LOG_ERROR, "Decoder_Interface_init error\r\n"); |
|
87 |
+ return -1; |
|
88 |
+ } |
|
89 |
+ |
|
90 |
+ amr_decode_fix_avctx(avctx); |
|
91 |
+ |
|
92 |
+ if (avctx->channels > 1) { |
|
93 |
+ av_log(avctx, AV_LOG_ERROR, "amr_nb: multichannel decoding not supported\n"); |
|
94 |
+ return -1; |
|
95 |
+ } |
|
96 |
+ |
|
97 |
+ return 0; |
|
98 |
+} |
|
99 |
+ |
|
100 |
+static av_cold int amr_nb_decode_close(AVCodecContext *avctx) |
|
101 |
+{ |
|
102 |
+ AMRContext *s = avctx->priv_data; |
|
103 |
+ |
|
104 |
+ Decoder_Interface_exit(s->decState); |
|
105 |
+ return 0; |
|
106 |
+} |
|
107 |
+ |
|
108 |
+static int amr_nb_decode_frame(AVCodecContext *avctx, void *data, |
|
109 |
+ int *data_size, AVPacket *avpkt) |
|
110 |
+{ |
|
111 |
+ const uint8_t *buf = avpkt->data; |
|
112 |
+ int buf_size = avpkt->size; |
|
113 |
+ AMRContext *s = avctx->priv_data; |
|
114 |
+ const uint8_t *amrData = buf; |
|
115 |
+ static const uint8_t block_size[16] = { 12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0 }; |
|
116 |
+ enum Mode dec_mode; |
|
117 |
+ int packet_size; |
|
118 |
+ |
|
119 |
+ /* av_log(NULL, AV_LOG_DEBUG, "amr_decode_frame buf=%p buf_size=%d frameCount=%d!!\n", |
|
120 |
+ buf, buf_size, s->frameCount); */ |
|
121 |
+ |
|
122 |
+ dec_mode = (buf[0] >> 3) & 0x000F; |
|
123 |
+ packet_size = block_size[dec_mode] + 1; |
|
124 |
+ |
|
125 |
+ if (packet_size > buf_size) { |
|
126 |
+ av_log(avctx, AV_LOG_ERROR, "amr frame too short (%u, should be %u)\n", |
|
127 |
+ buf_size, packet_size); |
|
128 |
+ return -1; |
|
129 |
+ } |
|
130 |
+ |
|
131 |
+ s->frameCount++; |
|
132 |
+ /* av_log(NULL, AV_LOG_DEBUG, "packet_size=%d amrData= 0x%X %X %X %X\n", |
|
133 |
+ packet_size, amrData[0], amrData[1], amrData[2], amrData[3]); */ |
|
134 |
+ /* call decoder */ |
|
135 |
+ Decoder_Interface_Decode(s->decState, amrData, data, 0); |
|
136 |
+ *data_size = 160 * 2; |
|
137 |
+ |
|
138 |
+ return packet_size; |
|
139 |
+} |
|
140 |
+ |
|
141 |
+AVCodec libopencore_amrnb_decoder = { |
|
142 |
+ "libopencore_amrnb", |
|
143 |
+ CODEC_TYPE_AUDIO, |
|
144 |
+ CODEC_ID_AMR_NB, |
|
145 |
+ sizeof(AMRContext), |
|
146 |
+ amr_nb_decode_init, |
|
147 |
+ NULL, |
|
148 |
+ amr_nb_decode_close, |
|
149 |
+ amr_nb_decode_frame, |
|
150 |
+ .long_name = NULL_IF_CONFIG_SMALL("OpenCORE Adaptive Multi-Rate (AMR) Narrow-Band"), |
|
151 |
+}; |
|
152 |
+ |
|
153 |
+static av_cold int amr_nb_encode_init(AVCodecContext *avctx) |
|
154 |
+{ |
|
155 |
+ AMRContext *s = avctx->priv_data; |
|
156 |
+ |
|
157 |
+ s->frameCount = 0; |
|
158 |
+ |
|
159 |
+ if (avctx->sample_rate != 8000) { |
|
160 |
+ av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n"); |
|
161 |
+ return -1; |
|
162 |
+ } |
|
163 |
+ |
|
164 |
+ if (avctx->channels != 1) { |
|
165 |
+ av_log(avctx, AV_LOG_ERROR, "Only mono supported\n"); |
|
166 |
+ return -1; |
|
167 |
+ } |
|
168 |
+ |
|
169 |
+ avctx->frame_size = 160; |
|
170 |
+ avctx->coded_frame = avcodec_alloc_frame(); |
|
171 |
+ |
|
172 |
+ s->enstate=Encoder_Interface_init(0); |
|
173 |
+ if (!s->enstate) { |
|
174 |
+ av_log(avctx, AV_LOG_ERROR, "Encoder_Interface_init error\n"); |
|
175 |
+ return -1; |
|
176 |
+ } |
|
177 |
+ |
|
178 |
+ if ((s->enc_bitrate = getBitrateMode(avctx->bit_rate)) < 0) { |
|
179 |
+ av_log(avctx, AV_LOG_ERROR, nb_bitrate_unsupported); |
|
180 |
+ return -1; |
|
181 |
+ } |
|
182 |
+ |
|
183 |
+ return 0; |
|
184 |
+} |
|
185 |
+ |
|
186 |
+static av_cold int amr_nb_encode_close(AVCodecContext *avctx) |
|
187 |
+{ |
|
188 |
+ AMRContext *s = avctx->priv_data; |
|
189 |
+ |
|
190 |
+ Encoder_Interface_exit(s->enstate); |
|
191 |
+ av_freep(&avctx->coded_frame); |
|
192 |
+ return 0; |
|
193 |
+} |
|
194 |
+ |
|
195 |
+static int amr_nb_encode_frame(AVCodecContext *avctx, |
|
196 |
+ unsigned char *frame/*out*/, |
|
197 |
+ int buf_size, void *data/*in*/) |
|
198 |
+{ |
|
199 |
+ AMRContext *s = avctx->priv_data; |
|
200 |
+ int written; |
|
201 |
+ |
|
202 |
+ if ((s->enc_bitrate = getBitrateMode(avctx->bit_rate)) < 0) { |
|
203 |
+ av_log(avctx, AV_LOG_ERROR, nb_bitrate_unsupported); |
|
204 |
+ return -1; |
|
205 |
+ } |
|
206 |
+ |
|
207 |
+ written = Encoder_Interface_Encode(s->enstate, s->enc_bitrate, data, |
|
208 |
+ frame, 0); |
|
209 |
+ /* av_log(NULL, AV_LOG_DEBUG, "amr_nb_encode_frame encoded %u bytes, bitrate %u, first byte was %#02x\n", |
|
210 |
+ written, s->enc_bitrate, frame[0] ); */ |
|
211 |
+ |
|
212 |
+ return written; |
|
213 |
+} |
|
214 |
+ |
|
215 |
+AVCodec libopencore_amrnb_encoder = { |
|
216 |
+ "libopencore_amrnb", |
|
217 |
+ CODEC_TYPE_AUDIO, |
|
218 |
+ CODEC_ID_AMR_NB, |
|
219 |
+ sizeof(AMRContext), |
|
220 |
+ amr_nb_encode_init, |
|
221 |
+ amr_nb_encode_frame, |
|
222 |
+ amr_nb_encode_close, |
|
223 |
+ NULL, |
|
224 |
+ .sample_fmts = (enum SampleFormat[]){SAMPLE_FMT_S16,SAMPLE_FMT_NONE}, |
|
225 |
+ .long_name = NULL_IF_CONFIG_SMALL("OpenCORE Adaptive Multi-Rate (AMR) Narrow-Band"), |
|
226 |
+}; |
|
227 |
+ |
|
228 |
+#endif |
|
229 |
+ |
|
230 |
+/* -----------AMR wideband ------------*/ |
|
231 |
+#if CONFIG_LIBOPENCORE_AMRWB |
|
232 |
+ |
|
233 |
+#ifdef _TYPEDEF_H |
|
234 |
+//To avoid duplicate typedefs from typedef in amr-nb |
|
235 |
+#define typedef_h |
|
236 |
+#endif |
|
237 |
+ |
|
238 |
+#include <opencore-amrwb/dec_if.h> |
|
239 |
+#include <opencore-amrwb/if_rom.h> |
|
240 |
+ |
|
241 |
+static const char wb_bitrate_unsupported[] = |
|
242 |
+ "bitrate not supported: use one of 6.6k, 8.85k, 12.65k, 14.25k, 15.85k, 18.25k, 19.85k, 23.05k, or 23.85k\n"; |
|
243 |
+ |
|
244 |
+/* Common code for fixed and float version*/ |
|
245 |
+typedef struct AMRWB_bitrates { |
|
246 |
+ int rate; |
|
247 |
+ int mode; |
|
248 |
+} AMRWB_bitrates; |
|
249 |
+ |
|
250 |
+typedef struct AMRWBContext { |
|
251 |
+ int frameCount; |
|
252 |
+ void *state; |
|
253 |
+ int mode; |
|
254 |
+ Word16 allow_dtx; |
|
255 |
+} AMRWBContext; |
|
256 |
+ |
|
257 |
+static av_cold int amr_wb_decode_init(AVCodecContext *avctx) |
|
258 |
+{ |
|
259 |
+ AMRWBContext *s = avctx->priv_data; |
|
260 |
+ |
|
261 |
+ s->frameCount = 0; |
|
262 |
+ s->state = D_IF_init(); |
|
263 |
+ |
|
264 |
+ amr_decode_fix_avctx(avctx); |
|
265 |
+ |
|
266 |
+ if (avctx->channels > 1) { |
|
267 |
+ av_log(avctx, AV_LOG_ERROR, "amr_wb: multichannel decoding not supported\n"); |
|
268 |
+ return -1; |
|
269 |
+ } |
|
270 |
+ |
|
271 |
+ return 0; |
|
272 |
+} |
|
273 |
+ |
|
274 |
+static int amr_wb_decode_frame(AVCodecContext *avctx, void *data, |
|
275 |
+ int *data_size, AVPacket *avpkt) |
|
276 |
+{ |
|
277 |
+ const uint8_t *buf = avpkt->data; |
|
278 |
+ int buf_size = avpkt->size; |
|
279 |
+ AMRWBContext *s = avctx->priv_data; |
|
280 |
+ const uint8_t *amrData = buf; |
|
281 |
+ int mode; |
|
282 |
+ int packet_size; |
|
283 |
+ static const uint8_t block_size[16] = {18, 24, 33, 37, 41, 47, 51, 59, 61, 6, 6, 0, 0, 0, 1, 1}; |
|
284 |
+ |
|
285 |
+ if (!buf_size) |
|
286 |
+ /* nothing to do */ |
|
287 |
+ return 0; |
|
288 |
+ |
|
289 |
+ mode = (amrData[0] >> 3) & 0x000F; |
|
290 |
+ packet_size = block_size[mode]; |
|
291 |
+ |
|
292 |
+ if (packet_size > buf_size) { |
|
293 |
+ av_log(avctx, AV_LOG_ERROR, "amr frame too short (%u, should be %u)\n", |
|
294 |
+ buf_size, packet_size + 1); |
|
295 |
+ return -1; |
|
296 |
+ } |
|
297 |
+ |
|
298 |
+ s->frameCount++; |
|
299 |
+ D_IF_decode(s->state, amrData, data, _good_frame); |
|
300 |
+ *data_size = 320 * 2; |
|
301 |
+ return packet_size; |
|
302 |
+} |
|
303 |
+ |
|
304 |
+static int amr_wb_decode_close(AVCodecContext *avctx) |
|
305 |
+{ |
|
306 |
+ AMRWBContext *s = avctx->priv_data; |
|
307 |
+ |
|
308 |
+ D_IF_exit(s->state); |
|
309 |
+ return 0; |
|
310 |
+} |
|
311 |
+ |
|
312 |
+AVCodec libopencore_amrwb_decoder = { |
|
313 |
+ "libopencore_amrwb", |
|
314 |
+ CODEC_TYPE_AUDIO, |
|
315 |
+ CODEC_ID_AMR_WB, |
|
316 |
+ sizeof(AMRWBContext), |
|
317 |
+ amr_wb_decode_init, |
|
318 |
+ NULL, |
|
319 |
+ amr_wb_decode_close, |
|
320 |
+ amr_wb_decode_frame, |
|
321 |
+ .long_name = NULL_IF_CONFIG_SMALL("OpenCORE Adaptive Multi-Rate (AMR) Wide-Band"), |
|
322 |
+}; |
|
323 |
+ |
|
324 |
+#endif /* CONFIG_LIBOPENCORE_AMRWB */ |