fix mimetype
[libav.git] / libavcodec / oggvorbis.c
CommitLineData
983e3246
MN
1/**
2 * @file oggvorbis.c
3 * Ogg Vorbis codec support via libvorbisenc.
4 * @author Mark Hills <mark@pogo.org.uk>
81e0d0b4
MH
5 */
6
81e0d0b4
MH
7#include <vorbis/vorbisenc.h>
8
9#include "avcodec.h"
81e0d0b4 10
3f4993f1
MN
11#undef NDEBUG
12#include <assert.h>
13
6d8f985e 14#define OGGVORBIS_FRAME_SIZE 64
81e0d0b4 15
6d8f985e 16#define BUFFER_SIZE (1024*64)
81e0d0b4
MH
17
18typedef struct OggVorbisContext {
19 vorbis_info vi ;
20 vorbis_dsp_state vd ;
21 vorbis_block vb ;
6d8f985e
MN
22 uint8_t buffer[BUFFER_SIZE];
23 int buffer_index;
3aca208a
MH
24
25 /* decoder */
26 vorbis_comment vc ;
d76f581f 27 ogg_packet op;
81e0d0b4
MH
28} OggVorbisContext ;
29
30
bbb77e7c 31static int oggvorbis_init_encoder(vorbis_info *vi, AVCodecContext *avccontext) {
c55427f8
MH
32
33#ifdef OGGVORBIS_VBR_BY_ESTIMATE
34 /* variable bitrate by estimate */
35
36 return (vorbis_encode_setup_managed(vi, avccontext->channels,
37 avccontext->sample_rate, -1, avccontext->bit_rate, -1) ||
38 vorbis_encode_ctl(vi, OV_ECTL_RATEMANAGE_AVG, NULL) ||
39 vorbis_encode_setup_init(vi)) ;
40#else
41 /* constant bitrate */
81e0d0b4
MH
42
43 return vorbis_encode_init(vi, avccontext->channels,
44 avccontext->sample_rate, -1, avccontext->bit_rate, -1) ;
c55427f8 45#endif
81e0d0b4
MH
46}
47
81e0d0b4
MH
48static int oggvorbis_encode_init(AVCodecContext *avccontext) {
49 OggVorbisContext *context = avccontext->priv_data ;
bbb77e7c
MN
50 ogg_packet header, header_comm, header_code;
51 uint8_t *p;
81e0d0b4 52
81e0d0b4 53 vorbis_info_init(&context->vi) ;
81e0d0b4 54 if(oggvorbis_init_encoder(&context->vi, avccontext) < 0) {
9b879566 55 av_log(avccontext, AV_LOG_ERROR, "oggvorbis_encode_init: init_encoder failed") ;
81e0d0b4
MH
56 return -1 ;
57 }
81e0d0b4
MH
58 vorbis_analysis_init(&context->vd, &context->vi) ;
59 vorbis_block_init(&context->vd, &context->vb) ;
60
bbb77e7c
MN
61 vorbis_comment_init(&context->vc);
62 vorbis_comment_add_tag(&context->vc, "encoder", LIBAVCODEC_IDENT) ;
63
64 vorbis_analysis_headerout(&context->vd, &context->vc, &header,
65 &header_comm, &header_code);
66
67 avccontext->extradata_size= 3*2 + header.bytes + header_comm.bytes + header_code.bytes;
68 p= avccontext->extradata= av_mallocz(avccontext->extradata_size);
69
70 *(p++) = header.bytes>>8;
71 *(p++) = header.bytes&0xFF;
72 memcpy(p, header.packet, header.bytes);
73 p += header.bytes;
74
75 *(p++) = header_comm.bytes>>8;
76 *(p++) = header_comm.bytes&0xFF;
77 memcpy(p, header_comm.packet, header_comm.bytes);
78 p += header_comm.bytes;
79
80 *(p++) = header_code.bytes>>8;
81 *(p++) = header_code.bytes&0xFF;
82 memcpy(p, header_code.packet, header_code.bytes);
83
84/* vorbis_block_clear(&context->vb);
85 vorbis_dsp_clear(&context->vd);
86 vorbis_info_clear(&context->vi);*/
87 vorbis_comment_clear(&context->vc);
88
81e0d0b4 89 avccontext->frame_size = OGGVORBIS_FRAME_SIZE ;
492cd3a9
MN
90
91 avccontext->coded_frame= avcodec_alloc_frame();
92 avccontext->coded_frame->key_frame= 1;
81e0d0b4
MH
93
94 return 0 ;
95}
96
97
3aca208a
MH
98static int oggvorbis_encode_frame(AVCodecContext *avccontext,
99 unsigned char *packets,
81e0d0b4
MH
100 int buf_size, void *data)
101{
102 OggVorbisContext *context = avccontext->priv_data ;
103 float **buffer ;
104 ogg_packet op ;
0d00cf38 105 signed short *audio = data ;
6f824977 106 int l, samples = data ? OGGVORBIS_FRAME_SIZE : 0;
81e0d0b4
MH
107
108 buffer = vorbis_analysis_buffer(&context->vd, samples) ;
109
110 if(context->vi.channels == 1) {
111 for(l = 0 ; l < samples ; l++)
0d00cf38 112 buffer[0][l]=audio[l]/32768.f;
81e0d0b4
MH
113 } else {
114 for(l = 0 ; l < samples ; l++){
0d00cf38
SS
115 buffer[0][l]=audio[l*2]/32768.f;
116 buffer[1][l]=audio[l*2+1]/32768.f;
81e0d0b4
MH
117 }
118 }
119
120 vorbis_analysis_wrote(&context->vd, samples) ;
121
81e0d0b4
MH
122 while(vorbis_analysis_blockout(&context->vd, &context->vb) == 1) {
123 vorbis_analysis(&context->vb, NULL);
124 vorbis_bitrate_addblock(&context->vb) ;
125
126 while(vorbis_bitrate_flushpacket(&context->vd, &op)) {
6f824977
MN
127 if(op.bytes==1) //id love to say this is a hack, bad sadly its not, appearently the end of stream decission is in libogg
128 continue;
6d8f985e
MN
129 memcpy(context->buffer + context->buffer_index, &op, sizeof(ogg_packet));
130 context->buffer_index += sizeof(ogg_packet);
131 memcpy(context->buffer + context->buffer_index, op.packet, op.bytes);
132 context->buffer_index += op.bytes;
133// av_log(avccontext, AV_LOG_DEBUG, "e%d / %d\n", context->buffer_index, op.bytes);
81e0d0b4
MH
134 }
135 }
136
3f4993f1 137 l=0;
6d8f985e 138 if(context->buffer_index){
bbb77e7c 139 ogg_packet *op2= (ogg_packet*)context->buffer;
6d8f985e 140 op2->packet = context->buffer + sizeof(ogg_packet);
3f4993f1 141
6f824977 142 l= op2->bytes;
c0df9d75 143 avccontext->coded_frame->pts= op2->granulepos;
3f4993f1 144
6f824977
MN
145 memcpy(packets, op2->packet, l);
146 context->buffer_index -= l + sizeof(ogg_packet);
147 memcpy(context->buffer, context->buffer + l + sizeof(ogg_packet), context->buffer_index);
6d8f985e 148// av_log(avccontext, AV_LOG_DEBUG, "E%d\n", l);
6d8f985e
MN
149 }
150
3f4993f1 151 return l;
81e0d0b4
MH
152}
153
154
3aca208a 155static int oggvorbis_encode_close(AVCodecContext *avccontext) {
81e0d0b4
MH
156 OggVorbisContext *context = avccontext->priv_data ;
157/* ogg_packet op ; */
158
81e0d0b4
MH
159 vorbis_analysis_wrote(&context->vd, 0) ; /* notify vorbisenc this is EOF */
160
81e0d0b4
MH
161 vorbis_block_clear(&context->vb);
162 vorbis_dsp_clear(&context->vd);
163 vorbis_info_clear(&context->vi);
492cd3a9
MN
164
165 av_freep(&avccontext->coded_frame);
bbb77e7c 166 av_freep(&avccontext->extradata);
81e0d0b4
MH
167
168 return 0 ;
169}
170
171
172AVCodec oggvorbis_encoder = {
173 "vorbis",
174 CODEC_TYPE_AUDIO,
175 CODEC_ID_VORBIS,
176 sizeof(OggVorbisContext),
177 oggvorbis_encode_init,
178 oggvorbis_encode_frame,
6f824977
MN
179 oggvorbis_encode_close,
180 .capabilities= CODEC_CAP_DELAY,
3aca208a
MH
181} ;
182
183
184static int oggvorbis_decode_init(AVCodecContext *avccontext) {
185 OggVorbisContext *context = avccontext->priv_data ;
a03cbe5f
MN
186 uint8_t *p= avccontext->extradata;
187 int i;
3aca208a
MH
188
189 vorbis_info_init(&context->vi) ;
190 vorbis_comment_init(&context->vc) ;
a03cbe5f
MN
191
192 for(i=0; i<3; i++){
193 context->op.b_o_s= i==0;
194 context->op.bytes= *(p++)<<8;
195 context->op.bytes+=*(p++);
196 context->op.packet= p;
197 p += context->op.bytes;
198
199 if(vorbis_synthesis_headerin(&context->vi, &context->vc, &context->op)<0){
200 av_log(avccontext, AV_LOG_ERROR, "%d. vorbis header damaged\n", i+1);
201 return -1;
202 }
203 }
204 avccontext->channels = context->vi.channels;
205 avccontext->sample_rate = context->vi.rate;
c0df9d75 206 avccontext->time_base= (AVRational){1, avccontext->sample_rate};
a03cbe5f
MN
207
208 vorbis_synthesis_init(&context->vd, &context->vi);
209 vorbis_block_init(&context->vd, &context->vb);
3aca208a
MH
210
211 return 0 ;
212}
213
214
215static inline int conv(int samples, float **pcm, char *buf, int channels) {
216 int i, j, val ;
217 ogg_int16_t *ptr, *data = (ogg_int16_t*)buf ;
218 float *mono ;
219
220 for(i = 0 ; i < channels ; i++){
221 ptr = &data[i];
222 mono = pcm[i] ;
223
224 for(j = 0 ; j < samples ; j++) {
225
226 val = mono[j] * 32767.f;
227
228 if(val > 32767) val = 32767 ;
229 if(val < -32768) val = -32768 ;
230
231 *ptr = val ;
232 ptr += channels;
233 }
234 }
235
236 return 0 ;
237}
238
239
240static int oggvorbis_decode_frame(AVCodecContext *avccontext,
241 void *data, int *data_size,
0c1a9eda 242 uint8_t *buf, int buf_size)
3aca208a
MH
243{
244 OggVorbisContext *context = avccontext->priv_data ;
3aca208a 245 float **pcm ;
d76f581f 246 ogg_packet *op= &context->op;
8bfed902 247 int samples, total_samples, total_bytes,i;
3aca208a 248
8bfed902
MN
249 if(!buf_size){
250 //FIXME flush
8bfed902
MN
251 return 0;
252 }
253
d76f581f
MN
254 op->packet = buf;
255 op->bytes = buf_size;
3aca208a 256
8bfed902
MN
257// av_log(avccontext, AV_LOG_DEBUG, "%d %d %d %lld %lld %d %d\n", op->bytes, op->b_o_s, op->e_o_s, op->granulepos, op->packetno, buf_size, context->vi.rate);
258
259/* for(i=0; i<op->bytes; i++)
260 av_log(avccontext, AV_LOG_DEBUG, "%02X ", op->packet[i]);
261 av_log(avccontext, AV_LOG_DEBUG, "\n");*/
3aca208a
MH
262
263 if(vorbis_synthesis(&context->vb, op) == 0)
264 vorbis_synthesis_blockin(&context->vd, &context->vb) ;
265
266 total_samples = 0 ;
267 total_bytes = 0 ;
268
269 while((samples = vorbis_synthesis_pcmout(&context->vd, &pcm)) > 0) {
270 conv(samples, pcm, (char*)data + total_bytes, context->vi.channels) ;
271 total_bytes += samples * 2 * context->vi.channels ;
272 total_samples += samples ;
273 vorbis_synthesis_read(&context->vd, samples) ;
274 }
275
276 *data_size = total_bytes ;
277 return buf_size ;
278}
81e0d0b4 279
3aca208a
MH
280
281static int oggvorbis_decode_close(AVCodecContext *avccontext) {
282 OggVorbisContext *context = avccontext->priv_data ;
283
284 vorbis_info_clear(&context->vi) ;
285 vorbis_comment_clear(&context->vc) ;
286
287 return 0 ;
288}
289
290
291AVCodec oggvorbis_decoder = {
292 "vorbis",
293 CODEC_TYPE_AUDIO,
294 CODEC_ID_VORBIS,
295 sizeof(OggVorbisContext),
296 oggvorbis_decode_init,
297 NULL,
298 oggvorbis_decode_close,
299 oggvorbis_decode_frame,
6f824977 300 .capabilities= CODEC_CAP_DELAY,
3aca208a 301} ;