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Viewing changes to server/mp4live/audio_encoder.h

  • Committer: Bazaar Package Importer
  • Author(s): Mario Limonciello
  • Date: 2008-01-12 15:59:56 UTC
  • Revision ID: james.westby@ubuntu.com-20080112155956-1vznw5njidvrh649
Tags: upstream-1.6dfsg
Import upstream version 1.6dfsg

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server/mp4live/audio_encoder.h
 
1
/*
 
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 * The contents of this file are subject to the Mozilla Public
 
3
 * License Version 1.1 (the "License"); you may not use this file
 
4
 * except in compliance with the License. You may obtain a copy of
 
5
 * the License at http://www.mozilla.org/MPL/
 
6
 * 
 
7
 * Software distributed under the License is distributed on an "AS
 
8
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 
9
 * implied. See the License for the specific language governing
 
10
 * rights and limitations under the License.
 
11
 * 
 
12
 * The Original Code is MPEG4IP.
 
13
 * 
 
14
 * The Initial Developer of the Original Code is Cisco Systems Inc.
 
15
 * Portions created by Cisco Systems Inc. are
 
16
 * Copyright (C) Cisco Systems Inc. 2000-2002.  All Rights Reserved.
 
17
 * 
 
18
 * Contributor(s): 
 
19
 *              Dave Mackie             dmackie@cisco.com
 
20
 */
 
21
 
 
22
#ifndef __AUDIO_ENCODER_H__
 
23
#define __AUDIO_ENCODER_H__
 
24
 
 
25
#include "media_codec.h"
 
26
#include "media_frame.h"
 
27
#include <sdp.h>
 
28
#include <mp4.h>
 
29
#include "profile_audio.h"
 
30
#include "resampl.h"
 
31
#include "encoder_gui_options.h"
 
32
 
 
33
class CAudioEncoder : public CMediaCodec {
 
34
 public:
 
35
  CAudioEncoder(CAudioProfile *profile,
 
36
                CAudioEncoder *next, 
 
37
                u_int8_t srcChannels,
 
38
                u_int32_t srcSampleRate,
 
39
                uint16_t mtu,
 
40
                bool realTime = true);
 
41
 
 
42
  virtual u_int32_t GetSamplesPerFrame() = 0;
 
43
        
 
44
  virtual bool Init(void) = 0;
 
45
 
 
46
  void AddRtpDestination(CMediaStream *stream,
 
47
                         bool disable_ts_offset,
 
48
                         uint16_t max_ttl,
 
49
                         in_port_t srcPort = 0);
 
50
 public:
 
51
  // utility routines
 
52
 
 
53
  static bool InterleaveStereoSamples(
 
54
                                      int16_t* pLeftBuffer, 
 
55
                                      int16_t* pRightBuffer, 
 
56
                                      u_int32_t numSamplesPerChannel,
 
57
                                      int16_t** ppDstBuffer);
 
58
 
 
59
  static bool DeinterleaveStereoSamples(
 
60
                                        int16_t* pSrcBuffer, 
 
61
                                        u_int32_t numSamplesPerChannel,
 
62
                                        int16_t** ppLeftBuffer, 
 
63
                                        int16_t** ppRightBuffer); 
 
64
  CAudioEncoder *GetNext(void) {
 
65
    return (CAudioEncoder *)CMediaCodec::GetNext();
 
66
  };
 
67
 protected:
 
68
  int ThreadMain(void);
 
69
  CAudioProfile *Profile(void) { return (CAudioProfile *)m_pConfig; } ;
 
70
 
 
71
  void Initialize(void);
 
72
  virtual bool EncodeSamples(
 
73
                             int16_t* pSamples, 
 
74
                             u_int32_t numSamplesPerChannel,
 
75
                             u_int8_t numChannels) = 0;
 
76
 
 
77
  virtual bool GetEncodedFrame(
 
78
                               u_int8_t** ppBuffer, 
 
79
                               u_int32_t* pBufferLength,
 
80
                               u_int32_t* pNumSamplesPerChannel) = 0;
 
81
 
 
82
  CRtpTransmitter *CreateRtpTransmitter(bool disable_ts) {
 
83
    return new CAudioRtpTransmitter(Profile(), m_mtu, disable_ts);
 
84
  };
 
85
 
 
86
  void ProcessAudioFrame(CMediaFrame *frame);
 
87
 
 
88
  void ResampleAudio(
 
89
                     const u_int8_t* frameData,
 
90
                     u_int32_t frameDataLength);
 
91
 
 
92
  void ForwardEncodedAudioFrames(void);
 
93
 
 
94
  void DoStopAudio();
 
95
 
 
96
  // audio utility routines
 
97
 
 
98
  inline Duration SrcSamplesToTicks(u_int64_t numSamples) {
 
99
    return (numSamples * TimestampTicks) / m_audioSrcSampleRate;
 
100
  }
 
101
 
 
102
  inline Duration DstSamplesToTicks(u_int64_t numSamples) {
 
103
    return (numSamples * TimestampTicks) / m_audioDstSampleRate;
 
104
  }
 
105
 
 
106
  inline u_int32_t SrcTicksToSamples(Duration duration) {
 
107
    return (duration * m_audioSrcSampleRate) / TimestampTicks;
 
108
  }
 
109
 
 
110
  inline u_int32_t DstTicksToSamples(Duration duration) {
 
111
    return (duration * m_audioDstSampleRate) / TimestampTicks;
 
112
  }
 
113
 
 
114
  inline u_int32_t SrcSamplesToBytes(u_int64_t numSamples) {
 
115
    return (numSamples * m_audioSrcChannels * sizeof(u_int16_t));
 
116
  }
 
117
 
 
118
  inline u_int32_t DstSamplesToBytes(u_int64_t numSamples) {
 
119
    return (numSamples * m_audioDstChannels * sizeof(u_int16_t));
 
120
  }
 
121
 
 
122
  inline u_int64_t SrcBytesToSamples(u_int32_t numBytes) {
 
123
    return (numBytes / (m_audioSrcChannels * sizeof(u_int16_t)));
 
124
  }
 
125
 
 
126
  inline u_int64_t DstBytesToSamples(u_int32_t numBytes) {
 
127
    return (numBytes / (m_audioDstChannels * sizeof(u_int16_t)));
 
128
  }
 
129
 
 
130
 
 
131
  void AddSilenceFrame(void);
 
132
 
 
133
  // Audio encoding variables (timing, etc)
 
134
        u_int8_t                m_audioSrcChannels;
 
135
        u_int32_t               m_audioSrcSampleRate;
 
136
        u_int32_t               m_audioSrcFrameNumber;
 
137
 
 
138
        // audio resampling info
 
139
        resample_t              *m_audioResample;
 
140
 
 
141
        // audio destination info
 
142
        MediaType               m_audioDstType;
 
143
        u_int8_t                m_audioDstChannels;
 
144
        u_int32_t               m_audioDstSampleRate;
 
145
        u_int16_t               m_audioDstSamplesPerFrame;
 
146
        u_int64_t               m_audioDstSampleNumber;
 
147
        u_int32_t               m_audioDstFrameNumber;
 
148
 
 
149
        // audio encoding info
 
150
        u_int8_t*               m_audioPreEncodingBuffer;
 
151
        u_int32_t               m_audioPreEncodingBufferLength;
 
152
        u_int32_t               m_audioPreEncodingBufferMaxLength;
 
153
 
 
154
        // audio timing info
 
155
        Timestamp               m_audioStartTimestamp;
 
156
        Timestamp               m_audioEncodingStartTimestamp;
 
157
        Duration                m_audioSrcElapsedDuration;
 
158
        Duration                m_audioDstElapsedDuration;
 
159
};
 
160
 
 
161
void AudioProfileCheck(CAudioProfile *ap);
 
162
 
 
163
CAudioEncoder* AudioEncoderCreate(CAudioProfile *ap, 
 
164
                                  CAudioEncoder *next,
 
165
                                  u_int8_t srcChannels,
 
166
                                  u_int32_t srcSampleRate,
 
167
                                  uint16_t mtu,
 
168
                                  bool realTime = true);
 
169
media_desc_t *create_audio_sdp(CAudioProfile *pConfig,
 
170
                               bool *mpeg4,
 
171
                               bool *isma_compliant,
 
172
                               bool *audio_is_3gp,
 
173
                               uint8_t *audioProfile,
 
174
                               uint8_t **audioConfig,
 
175
                               uint32_t *audioConfigLen);
 
176
 
 
177
MediaType get_audio_mp4_fileinfo(CAudioProfile *pConfig,
 
178
                                 bool *mpeg4,
 
179
                                 bool *isma_compliant,
 
180
                                 uint8_t *audioProfile,
 
181
                                 uint8_t **audioConfig,
 
182
                                 uint32_t *audioConfigLen,
 
183
                                 uint8_t *mp4_audio_type);
 
184
 
 
185
void create_mp4_audio_hint_track(CAudioProfile *pConfig, 
 
186
                                 MP4FileHandle mp4file,
 
187
                                 MP4TrackId trackId,
 
188
                                 uint16_t mtu);
 
189
 
 
190
 
 
191
bool get_audio_rtp_info (CAudioProfile *pConfig,
 
192
                         MediaType *audioFrameType,
 
193
                         uint32_t *audioTimeScale,
 
194
                         uint8_t *audioPayloadNumber,
 
195
                         uint8_t *audioPayloadBytesPerPacket,
 
196
                         uint8_t *audioPayloadBytesPerFrame,
 
197
                         uint8_t *audioQueueMaxCount,
 
198
                         uint8_t *audioiovMaxCount,
 
199
                         audio_queue_frame_f *audio_queue_frame,
 
200
                         audio_set_rtp_payload_f *audio_set_rtp_payload,
 
201
                         audio_set_rtp_header_f *audio_set_header,
 
202
                         audio_set_rtp_jumbo_frame_f *audio_set_jumbo_frame,
 
203
                         void **ud);
 
204
 
 
205
void AudioProfileCheckBase(CAudioProfile *ap);
 
206
 
 
207
CAudioEncoder* AudioEncoderBaseCreate(CAudioProfile *ap, 
 
208
                                      CAudioEncoder *next, 
 
209
                                      u_int8_t srcChannels,
 
210
                                      u_int32_t srcSampleRate,
 
211
                                      uint16_t mtu,
 
212
                                      bool realTime = true);
 
213
 
 
214
media_desc_t *create_base_audio_sdp(CAudioProfile *pConfig,
 
215
                                    bool *mpeg4,
 
216
                                    bool *isma_compliant,
 
217
                                    bool *audio_is_3gp,
 
218
                                    uint8_t *audioProfile,
 
219
                                    uint8_t **audioConfig,
 
220
                                    uint32_t *audioConfigLen);
 
221
 
 
222
MediaType get_base_audio_mp4_fileinfo(CAudioProfile *pConfig,
 
223
                                      bool *mpeg4,
 
224
                                      bool *isma_compliant,
 
225
                                      uint8_t *audioProfile,
 
226
                                      uint8_t **audioConfig,
 
227
                                      uint32_t *audioConfigLen,
 
228
                                      uint8_t *mp4_audio_type);
 
229
 
 
230
void create_base_mp4_audio_hint_track(CAudioProfile *pConfig, 
 
231
                                      MP4FileHandle mp4file,
 
232
                                      MP4TrackId trackId,
 
233
                                      uint16_t mtu);
 
234
 
 
235
 
 
236
bool get_base_audio_rtp_info (CAudioProfile *pConfig,
 
237
                              MediaType *audioFrameType,
 
238
                              uint32_t *audioTimeScale,
 
239
                              uint8_t *audioPayloadNumber,
 
240
                              uint8_t *audioPayloadBytesPerPacket,
 
241
                              uint8_t *audioPayloadBytesPerFrame,
 
242
                              uint8_t *audioQueueMaxCount,
 
243
                              uint8_t *audioiovMaxCount,
 
244
                              audio_queue_frame_f * audio_queue_frame,
 
245
                              audio_set_rtp_payload_f *audio_set_rtp_payload,
 
246
                              audio_set_rtp_header_f *audio_set_header,
 
247
                              audio_set_rtp_jumbo_frame_f *audio_set_jumbo_frame,
 
248
                              void **ud);
 
249
 
 
250
typedef uint32_t *(*bitrates_for_samplerate_f)(uint32_t samplerate, uint8_t chans, uint32_t *ret_size);
 
251
 
 
252
typedef struct audio_encoder_table_t {
 
253
  char *dialog_selection_name;
 
254
  char *audio_encoder;
 
255
  char *audio_encoding;
 
256
  const uint32_t *sample_rates;
 
257
  uint32_t num_sample_rates;
 
258
  bitrates_for_samplerate_f bitrates_for_samplerate;
 
259
  uint32_t max_channels;
 
260
  get_gui_options_list_f get_gui_options;
 
261
} audio_encoder_table_t;
 
262
 
 
263
void InitAudioEncoders(void);
 
264
 
 
265
void AddAudioEncoderTable(audio_encoder_table_t *new_table);
 
266
 
 
267
extern audio_encoder_table_t **audio_encoder_table;
 
268
extern uint32_t audio_encoder_table_size;
 
269
extern const uint32_t allSampleRateTable[13];
 
270
extern const uint32_t allSampleRateTableSize;
 
271
 
 
272
#endif /* __AUDIO_ENCODER_H__ */
 
273