3 * Copyright (c) 2003 Zdenek Kabelac.
4 * Copyright (c) 2004 Thomas Raivio.
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 * still a bit unfinished - but it plays something
38 * when CONFIG_FAADBIN is defined the libfaad will be opened at runtime
40 //#undef CONFIG_FAADBIN
41 //#define CONFIG_FAADBIN
45 static const char* libfaadname = "libfaad.so.0";
52 void* handle; /* dlopen handle */
53 void* faac_handle; /* FAAD library handle */
58 faacDecHandle FAADAPI (*faacDecOpen)(void);
59 faacDecConfigurationPtr FAADAPI (*faacDecGetCurrentConfiguration)(faacDecHandle hDecoder);
61 int FAADAPI (*faacDecSetConfiguration)(faacDecHandle hDecoder,
62 faacDecConfigurationPtr config);
63 int FAADAPI (*faacDecInit)(faacDecHandle hDecoder,
64 unsigned char *buffer,
65 unsigned long *samplerate,
66 unsigned long *channels);
67 int FAADAPI (*faacDecInit2)(faacDecHandle hDecoder, unsigned char *pBuffer,
68 unsigned long SizeOfDecoderSpecificInfo,
69 unsigned long *samplerate, unsigned long *channels);
70 int FAADAPI (*faacDecDecode)(faacDecHandle hDecoder,
71 unsigned char *buffer,
72 unsigned long *bytesconsumed,
74 unsigned long *samples);
76 unsigned char FAADAPI (*faacDecSetConfiguration)(faacDecHandle hDecoder,
77 faacDecConfigurationPtr config);
78 long FAADAPI (*faacDecInit)(faacDecHandle hDecoder,
79 unsigned char *buffer,
80 unsigned long buffer_size,
81 unsigned long *samplerate,
82 unsigned char *channels);
83 char FAADAPI (*faacDecInit2)(faacDecHandle hDecoder, unsigned char *pBuffer,
84 unsigned long SizeOfDecoderSpecificInfo,
85 unsigned long *samplerate, unsigned char *channels);
86 void *FAADAPI (*faacDecDecode)(faacDecHandle hDecoder,
87 faacDecFrameInfo *hInfo,
88 unsigned char *buffer,
89 unsigned long buffer_size);
90 char* FAADAPI (*faacDecGetErrorMessage)(unsigned char errcode);
93 void FAADAPI (*faacDecClose)(faacDecHandle hDecoder);
98 static const unsigned long faac_srates[] =
100 96000, 88200, 64000, 48000, 44100, 32000,
101 24000, 22050, 16000, 12000, 11025, 8000
104 static int faac_init_mp4(AVCodecContext *avctx)
106 FAACContext *s = (FAACContext *) avctx->priv_data;
107 unsigned long samplerate;
108 #ifndef FAAD2_VERSION
109 unsigned long channels;
111 unsigned char channels;
115 if (avctx->extradata){
116 r = s->faacDecInit2(s->faac_handle, (uint8_t*) avctx->extradata,
117 avctx->extradata_size,
118 &samplerate, &channels);
120 av_log(avctx, AV_LOG_ERROR,
121 "faacDecInit2 failed r:%d sr:%ld ch:%ld s:%d\n",
122 r, samplerate, (long)channels, avctx->extradata_size);
124 avctx->sample_rate = samplerate;
125 avctx->channels = channels;
133 static int faac_decode_frame(AVCodecContext *avctx,
134 void *data, int *data_size,
135 uint8_t *buf, int buf_size)
137 FAACContext *s = (FAACContext *) avctx->priv_data;
138 #ifndef FAAD2_VERSION
139 unsigned long bytesconsumed;
140 short *sample_buffer = NULL;
141 unsigned long samples;
144 faacDecFrameInfo frame_info;
149 #ifndef FAAD2_VERSION
150 out = s->faacDecDecode(s->faac_handle,
155 samples *= s->sample_size;
157 *data_size = samples;
158 return (buf_size < (int)bytesconsumed)
159 ? buf_size : (int)bytesconsumed;
164 unsigned char channels;
165 int r = s->faacDecInit(s->faac_handle, buf, buf_size, &srate, &channels);
167 av_log(avctx, AV_LOG_ERROR, "faac: codec init failed: %s\n",
168 s->faacDecGetErrorMessage(frame_info.error));
171 avctx->sample_rate = srate;
172 avctx->channels = channels;
176 out = s->faacDecDecode(s->faac_handle, &frame_info, (unsigned char*)buf, (unsigned long)buf_size);
178 if (frame_info.error > 0) {
179 av_log(avctx, AV_LOG_ERROR, "faac: frame decoding failed: %s\n",
180 s->faacDecGetErrorMessage(frame_info.error));
184 frame_info.samples *= s->sample_size;
185 memcpy(data, out, frame_info.samples); // CHECKME - can we cheat this one
188 *data_size = frame_info.samples;
190 return (buf_size < (int)frame_info.bytesconsumed)
191 ? buf_size : (int)frame_info.bytesconsumed;
195 static int faac_decode_end(AVCodecContext *avctx)
197 FAACContext *s = (FAACContext *) avctx->priv_data;
200 s->faacDecClose(s->faac_handle);
206 static int faac_decode_init(AVCodecContext *avctx)
208 FAACContext *s = (FAACContext *) avctx->priv_data;
209 faacDecConfigurationPtr faac_cfg;
211 #ifdef CONFIG_FAADBIN
214 s->handle = dlopen(libfaadname, RTLD_LAZY);
217 av_log(avctx, AV_LOG_ERROR, "FAAD library: %s could not be opened! \n%s\n",
218 libfaadname, dlerror());
221 #define dfaac(a, b) \
222 do { static const char* n = "faacDec" #a; \
223 if ((s->faacDec ## a = b dlsym( s->handle, n )) == NULL) { err = n; break; } } while(0)
225 #else /* !CONFIG_FAADBIN */
226 #define dfaac(a, b) s->faacDec ## a = faacDec ## a
227 #endif /* CONFIG_FAADBIN */
229 // resolve all needed function calls
230 dfaac(Open, (faacDecHandle FAADAPI (*)(void)));
231 dfaac(GetCurrentConfiguration, (faacDecConfigurationPtr
232 FAADAPI (*)(faacDecHandle)));
233 #ifndef FAAD2_VERSION
234 dfaac(SetConfiguration, (int FAADAPI (*)(faacDecHandle,
235 faacDecConfigurationPtr)));
237 dfaac(Init, (int FAADAPI (*)(faacDecHandle, unsigned char*,
238 unsigned long*, unsigned long*)));
239 dfaac(Init2, (int FAADAPI (*)(faacDecHandle, unsigned char*,
240 unsigned long, unsigned long*,
242 dfaac(Close, (void FAADAPI (*)(faacDecHandle hDecoder)));
243 dfaac(Decode, (int FAADAPI (*)(faacDecHandle, unsigned char*,
244 unsigned long*, short*, unsigned long*)));
246 dfaac(SetConfiguration, (unsigned char FAADAPI (*)(faacDecHandle,
247 faacDecConfigurationPtr)));
248 dfaac(Init, (long FAADAPI (*)(faacDecHandle, unsigned char*,
249 unsigned long, unsigned long*, unsigned char*)));
250 dfaac(Init2, (char FAADAPI (*)(faacDecHandle, unsigned char*,
251 unsigned long, unsigned long*,
253 dfaac(Decode, (void *FAADAPI (*)(faacDecHandle, faacDecFrameInfo*,
254 unsigned char*, unsigned long)));
255 dfaac(GetErrorMessage, (char* FAADAPI (*)(unsigned char)));
259 #ifdef CONFIG_FAADBIN
264 av_log(avctx, AV_LOG_ERROR, "FAAD library: cannot resolve %s in %s!\n",
270 s->faac_handle = s->faacDecOpen();
271 if (!s->faac_handle) {
272 av_log(avctx, AV_LOG_ERROR, "FAAD library: cannot create handler!\n");
273 faac_decode_end(avctx);
278 faac_cfg = s->faacDecGetCurrentConfiguration(s->faac_handle);
281 switch (avctx->bits_per_sample) {
282 case 8: av_log(avctx, AV_LOG_ERROR, "FAADlib unsupported bps %d\n", avctx->bits_per_sample); break;
286 faac_cfg->outputFormat = FAAD_FMT_16BIT;
292 faac_cfg->outputFormat = FAAD_FMT_24BIT;
298 faac_cfg->outputFormat = FAAD_FMT_32BIT;
304 faac_cfg->defSampleRate = (!avctx->sample_rate) ? 44100 : avctx->sample_rate;
305 faac_cfg->defObjectType = LC;
308 s->faacDecSetConfiguration(s->faac_handle, faac_cfg);
310 faac_init_mp4(avctx);
315 #define AAC_CODEC(id, name) \
316 AVCodec name ## _decoder = { \
320 sizeof(FAACContext), \
327 // FIXME - raw AAC files - maybe just one entry will be enough
328 AAC_CODEC(CODEC_ID_AAC, aac);
329 // If it's mp4 file - usually embeded into Qt Mov
330 AAC_CODEC(CODEC_ID_MPEG4AAC, mpeg4aac);