1 /*
2 * Copyright (C) 2011 The Android Open Source Project
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 express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "sles_allinclusive.h"
18
19 #include <media/IMediaPlayerService.h>
20 #include <media/stagefright/OMXClient.h>
21 #include <media/stagefright/OMXCodec.h>
22 #include <media/IOMX.h>
23 #include <media/stagefright/MediaDefs.h>
24
25
26 namespace android {
27
28 // listed in same order as VideoCodecIds[] in file "../devices.c" with ANDROID defined
29 static const char *kVideoMimeTypes[] = {
30 MEDIA_MIMETYPE_VIDEO_MPEG2,
31 MEDIA_MIMETYPE_VIDEO_H263,
32 MEDIA_MIMETYPE_VIDEO_MPEG4,
33 MEDIA_MIMETYPE_VIDEO_AVC,
34 MEDIA_MIMETYPE_VIDEO_VP8,
35 MEDIA_MIMETYPE_VIDEO_VP9
36 };
37 // must == kMaxVideoDecoders
38 static const size_t kNbVideoMimeTypes = sizeof(kVideoMimeTypes) / sizeof(kVideoMimeTypes[0]);
39
40 // codec capabilities in the following arrays maps to the mime types defined in kVideoMimeTypes
41 // CodecCapabilities is from OMXCodec.h
42 static Vector<CodecCapabilities> VideoDecoderCapabilities[kNbVideoMimeTypes];
43 static XAuint32 VideoDecoderNbProfLevel[kNbVideoMimeTypes];
44
45 static XAuint32 NbSupportedDecoderTypes = 0;
46
47
convertOpenMaxIlToAl(OMX_U32 ilVideoProfileOrLevel)48 XAuint32 convertOpenMaxIlToAl(OMX_U32 ilVideoProfileOrLevel) {
49 // For video codec profiles and levels, the number of trailing zeroes in OpenMAX IL
50 // are equal to the matching OpenMAX AL constant value plus 1, for example:
51 // XA_VIDEOPROFILE_H263_BACKWARDCOMPATIBLE ((XAuint32) 0x00000003)
52 // matches
53 // OMX_VIDEO_H263ProfileBackwardCompatible = 0x04
54 return (XAuint32) (__builtin_ctz(ilVideoProfileOrLevel) + 1);
55 }
56
57
android_videoCodec_expose()58 bool android_videoCodec_expose() {
59 SL_LOGV("android_videoCodec_expose()");
60
61 sp<IMediaPlayerService> service(IMediaDeathNotifier::getMediaPlayerService());
62 if (service == NULL) {
63 // no need to SL_LOGE; getMediaPlayerService already will have done so
64 return false;
65 }
66
67 sp<IOMX> omx(service->getOMX());
68 if (omx.get() == NULL) {
69 ALOGE("android_videoCodec_expose() couldn't access OMX interface");
70 return false;
71 }
72
73 // used to check whether no codecs were found, which is a sign of failure
74 NbSupportedDecoderTypes = 0;
75 for (size_t m = 0 ; m < kNbVideoMimeTypes ; m++) {
76 // QueryCodecs is from OMXCodec.h
77 if (OK == QueryCodecs(omx, kVideoMimeTypes[m], true /* queryDecoders */,
78 true /* hwCodecOnly */, &VideoDecoderCapabilities[m])) {
79 if (VideoDecoderCapabilities[m].empty()) {
80 VideoDecoderNbProfLevel[m] = 0;
81 } else {
82 // get the number of profiles and levels for the first codec implementation
83 // for a given decoder ID / MIME type
84 Vector<CodecProfileLevel> &profileLevels =
85 VideoDecoderCapabilities[m].editItemAt(0).mProfileLevels;
86 #if 0 // Intentionally disabled example of making modifications to profile / level combinations
87 if (VideoDecoderIds[m] == XA_VIDEOCODEC_AVC) {
88 // remove non-core profile / level combinations
89 for (size_t i = 0, size = profileLevels.size(); i < size; ) {
90 CodecProfileLevel profileLevel = profileLevels.itemAt(i);
91 if (profileLevel.mProfile == XA_VIDEOPROFILE_AVC_BASELINE) {
92 // either skip past this item and don't change vector size
93 ++i;
94 } else {
95 // or remove this item, decrement the vector size,
96 // and next time through the loop check a different item at same index
97 profileLevels.removeAt(i);
98 --size;
99 }
100 }
101 }
102 #endif
103 if ((VideoDecoderNbProfLevel[m] = profileLevels.size()) > 0) {
104 NbSupportedDecoderTypes++;
105 } else {
106 VideoDecoderCapabilities[m].clear();
107 }
108 }
109 }
110 }
111
112 return (NbSupportedDecoderTypes > 0);
113 }
114
115
android_videoCodec_deinit()116 void android_videoCodec_deinit() {
117 SL_LOGV("android_videoCodec_deinit()");
118 for (size_t m = 0 ; m < kNbVideoMimeTypes ; m++) {
119 VideoDecoderCapabilities[m].clear();
120 }
121 // not needed
122 // memset(VideoDecoderNbProfLevel, 0, sizeof(VideoDecoderNbProfLevel));
123 // NbSupportedDecoderTypes = 0;
124 }
125
126
android_videoCodec_getNbDecoders()127 XAuint32 android_videoCodec_getNbDecoders() {
128 return NbSupportedDecoderTypes;
129 }
130
131
android_videoCodec_getDecoderIds(XAuint32 nbDecoders,XAuint32 * pDecoderIds)132 void android_videoCodec_getDecoderIds(XAuint32 nbDecoders, XAuint32 *pDecoderIds) {
133 XAuint32 *pIds = pDecoderIds;
134 XAuint32 nbFound = 0;
135 for (size_t m = 0 ; m < kNbVideoMimeTypes ; m++) {
136 if (!VideoDecoderCapabilities[m].empty()) {
137 *pIds = VideoDecoderIds[m];
138 pIds++;
139 nbFound++;
140 }
141 // range check: function can be called for fewer codecs than there are
142 if (nbFound == nbDecoders) {
143 break;
144 }
145 }
146 }
147
148
android_videoCodec_getProfileLevelCombinationNb(XAuint32 decoderId,XAuint32 * pNb)149 SLresult android_videoCodec_getProfileLevelCombinationNb(XAuint32 decoderId, XAuint32 *pNb)
150 {
151 // translate a decoder ID to an index in the codec table
152 size_t decoderIndex = 0;
153 while (decoderIndex < kNbVideoMimeTypes) {
154 if (decoderId == VideoDecoderIds[decoderIndex]) {
155 *pNb = VideoDecoderNbProfLevel[decoderIndex];
156 return XA_RESULT_SUCCESS;
157 }
158 decoderIndex++;
159 }
160
161 // spec doesn't allow a decoder to report zero profile/level combinations
162 *pNb = 0;
163 return XA_RESULT_PARAMETER_INVALID;
164 }
165
166
android_videoCodec_getProfileLevelCombination(XAuint32 decoderId,XAuint32 plIndex,XAVideoCodecDescriptor * pDescr)167 SLresult android_videoCodec_getProfileLevelCombination(XAuint32 decoderId, XAuint32 plIndex,
168 XAVideoCodecDescriptor *pDescr)
169 {
170 // translate a decoder ID to an index in the codec table
171 size_t decoderIndex = 0;
172 while (decoderIndex < kNbVideoMimeTypes) {
173 if (decoderId == VideoDecoderIds[decoderIndex]) {
174 // We only look at the first codec implementation for a given decoder ID / MIME type.
175 // OpenMAX AL doesn't let you expose the capabilities of multiple codec implementations.
176 if (!(plIndex < VideoDecoderCapabilities[decoderIndex].itemAt(0).mProfileLevels.size()))
177 {
178 // asking for invalid profile/level
179 return XA_RESULT_PARAMETER_INVALID;
180 }
181 // set the fields we know about
182 pDescr->codecId = decoderId;
183 pDescr->profileSetting = convertOpenMaxIlToAl(VideoDecoderCapabilities[decoderIndex].
184 itemAt(0).mProfileLevels.itemAt(plIndex).mProfile);
185 pDescr->levelSetting = convertOpenMaxIlToAl(VideoDecoderCapabilities[decoderIndex].
186 itemAt(0).mProfileLevels.itemAt(plIndex).mLevel);
187 // initialize the fields we don't know about
188 pDescr->maxWidth = 0;
189 pDescr->maxHeight = 0;
190 pDescr->maxFrameRate = 0;
191 pDescr->maxBitRate = 0;
192 pDescr->rateControlSupported = 0;
193 break;
194 }
195 decoderIndex++;
196 }
197 return (decoderIndex < kNbVideoMimeTypes) ? XA_RESULT_SUCCESS : XA_RESULT_PARAMETER_INVALID;
198 }
199
200 } // namespace android
201