1/* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
13 * express or implied.
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
17 */
18/*
19    This PVA_FF_AudioSampleEntry Class is used for visual streams.
20*/
21
22#define IMPLEMENT_AudioSampleEntry
23
24#include "audiosampleentry.h"
25#include "atomutils.h"
26#include "a_atomdefs.h"
27
28
29// Constructor
30PVA_FF_AudioSampleEntry::PVA_FF_AudioSampleEntry(int32 codecType)
31        : PVA_FF_SampleEntry(FourCharConstToUint32('m', 'p', '4', 'a'))
32{
33    PV_MP4_FF_NEW(fp->auditCB, PVA_FF_ESDAtom, (MEDIA_TYPE_AUDIO, codecType), _pes);
34
35    init();
36    recomputeSize();
37
38    _pes->setParent(this);
39}
40
41// Destructor
42PVA_FF_AudioSampleEntry::~PVA_FF_AudioSampleEntry()
43{
44    // Cleanup PVA_FF_ESDAtom
45    PV_MP4_FF_DELETE(NULL, PVA_FF_ESDAtom, _pes);
46}
47
48void
49PVA_FF_AudioSampleEntry::init()
50{
51    _reserved1[0] = 0;
52    _reserved1[1] = 0;
53
54    _reserved2 = 2;
55    _reserved3 = 16;
56    _reserved4 = 0;
57
58    _timeScale = 0;
59
60    _reserved5 = 0;
61}
62
63// Rendering the PVA_FF_Atom in proper format (bitlengths, etc.) to an ostream
64bool
65PVA_FF_AudioSampleEntry::renderToFileStream(MP4_AUTHOR_FF_FILE_IO_WRAP *fp)
66{
67    int32 rendered = 0;
68
69    if (!renderAtomBaseMembers(fp))
70    {
71        return false;
72    }
73    rendered += getDefaultSize();
74
75    // From PVA_FF_SampleEntry base class
76    for (int32 i = 0; i < 6; i++)
77    {
78        if (! PVA_FF_AtomUtils::render8(fp, _reserved[i]))
79        {
80            return false;
81        }
82        rendered += 1;
83    }
84    if (!PVA_FF_AtomUtils::render16(fp, _dataReferenceIndex))
85    {
86        return false;
87    }
88
89    if (!PVA_FF_AtomUtils::render32(fp, _reserved1[0]))
90    {
91        return false;
92    }
93    if (!PVA_FF_AtomUtils::render32(fp, _reserved1[1]))
94    {
95        return false;
96    }
97    rendered += 8;
98
99    if (!PVA_FF_AtomUtils::render16(fp, _reserved2))
100    {
101        return false;
102    }
103    if (!PVA_FF_AtomUtils::render16(fp, _reserved3))
104    {
105        return false;
106    }
107    if (!PVA_FF_AtomUtils::render32(fp, _reserved4))
108    {
109        return false;
110    }
111    rendered += 8;
112
113    if (!PVA_FF_AtomUtils::render16(fp, _timeScale))
114    {
115        return false;
116    }
117    rendered += 2;
118
119    if (!PVA_FF_AtomUtils::render16(fp, _reserved5))
120    {
121        return false;
122    }
123    rendered += 2;
124
125    if (!_pes->renderToFileStream(fp))
126    {
127        return false;
128    }
129    rendered += getESDAtom().getSize();
130
131    return true;
132}
133
134
135void
136PVA_FF_AudioSampleEntry::recomputeSize()
137{
138    int32 size = getDefaultSize();
139
140    size += 8; // For reserved and dataRefIndex of PVA_FF_SampleEntry base class
141
142    size += 16; // For reserved1 - reserved4
143    size += 2; // For timescale
144    size += 2; // For reserved5
145    size += getESDAtom().getSize();
146
147    _size = size;
148
149    if (_pparent != NULL)
150    {
151        _pparent->recomputeSize();
152    }
153}
154