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
26namespace android {
27
28static sp<IOMX> omx;
29
30// listed in same order as VideoCodecIds[] in file "../devices.c" with ANDROID defined
31static const char *kVideoMimeTypes[] = {
32        MEDIA_MIMETYPE_VIDEO_MPEG2,
33        MEDIA_MIMETYPE_VIDEO_H263,
34        MEDIA_MIMETYPE_VIDEO_MPEG4,
35        MEDIA_MIMETYPE_VIDEO_AVC,
36        MEDIA_MIMETYPE_VIDEO_VPX
37};
38static 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
41static Vector<CodecCapabilities> VideoDecoderCapabilities[kNbVideoMimeTypes];
42static XAuint32 VideoDecoderNbProfLevel[kNbVideoMimeTypes];
43
44static XAuint32 NbSupportedDecoderTypes = 0;
45
46
47XAuint32 convertOpenMaxIlToAl(OMX_U32 ilVideoProfileOrLevel) {
48    // For video codec profiles and levels, the number of trailing zeroes in OpenMAX IL
49    // are equal to the matching OpenMAX AL constant value plus 1, for example:
50    //    XA_VIDEOPROFILE_H263_BACKWARDCOMPATIBLE ((XAuint32) 0x00000003)
51    //        matches
52    //    OMX_VIDEO_H263ProfileBackwardCompatible  = 0x04
53    return (XAuint32) (__builtin_ctz(ilVideoProfileOrLevel) + 1);
54}
55
56
57bool android_videoCodec_expose() {
58    SL_LOGV("android_videoCodec_expose()");
59
60    sp<IMediaPlayerService> service(IMediaDeathNotifier::getMediaPlayerService());
61    if (service == NULL) {
62        // no need to SL_LOGE; getMediaPlayerService already will have done so
63        return false;
64    }
65
66    omx = service->getOMX();
67    if (omx.get() == NULL) {
68        LOGE("android_videoCodec_expose() couldn't access OMX interface");
69        return false;
70    }
71
72    // used to check whether no codecs were found, which is a sign of failure
73    NbSupportedDecoderTypes = 0;
74    for (size_t m = 0 ; m < kNbVideoMimeTypes ; m++) {
75        if (OK == QueryCodecs(omx, kVideoMimeTypes[m], true /* queryDecoders */,
76                true /* hwCodecOnly */, &VideoDecoderCapabilities[m])) {
77            if (!VideoDecoderCapabilities[m].empty()) {
78                NbSupportedDecoderTypes++;
79            }
80            // for each decoder of the given decoder ID, verify it is a hardware decoder
81            for (size_t c = 0 ; c < VideoDecoderCapabilities[m].size() ; c++) {
82                VideoDecoderNbProfLevel[c] = 0;
83                const String8& compName =
84                        VideoDecoderCapabilities[m].itemAt(c).mComponentName;
85                // get the number of profiles and levels for this decoder
86                VideoDecoderNbProfLevel[m] =
87                        VideoDecoderCapabilities[m].itemAt(c).mProfileLevels.size();
88                if (VideoDecoderNbProfLevel[m] != 0) {
89                    SL_LOGV("codec %d nb prof/level=%d", m, VideoDecoderNbProfLevel[m]);
90                    break;
91                }
92            }
93        }
94    }
95
96    return (NbSupportedDecoderTypes > 0);
97}
98
99
100void android_videoCodec_deinit() {
101    SL_LOGV("android_videoCodec_deinit()");
102    for (size_t m = 0 ; m < kNbVideoMimeTypes ; m++) {
103        VideoDecoderCapabilities[m].clear();
104    }
105}
106
107
108XAuint32 android_videoCodec_getNbDecoders() {
109    return NbSupportedDecoderTypes;
110}
111
112
113void android_videoCodec_getDecoderIds(XAuint32 nbDecoders, XAuint32 *pDecoderIds) {
114    XAuint32 *pIds = pDecoderIds;
115    XAuint32 nbFound = 0;
116    for (size_t m = 0 ; m < kNbVideoMimeTypes ; m++) {
117        if (!VideoDecoderCapabilities[m].empty()) {
118            *pIds = VideoDecoderIds[m];
119            pIds++;
120            nbFound++;
121        }
122        // range check: function can be called for fewer codecs than there are
123        if (nbFound == nbDecoders) {
124            break;
125        }
126    }
127}
128
129
130SLresult android_videoCodec_getProfileLevelCombinationNb(XAuint32 decoderId, XAuint32 *pNb)
131{
132    // translate a decoder ID to an index in the codec table
133    size_t decoderIndex = 0;
134    *pNb = 0;
135    while (decoderIndex < kNbVideoMimeTypes) {
136        if (decoderId == VideoDecoderIds[decoderIndex]) {
137            *pNb = VideoDecoderNbProfLevel[decoderIndex];
138            break;
139        }
140        decoderIndex++;
141    }
142
143    return XA_RESULT_SUCCESS;
144}
145
146
147SLresult android_videoCodec_getProfileLevelCombination(XAuint32 decoderId, XAuint32 plIndex,
148        XAVideoCodecDescriptor *pDescr)
149{
150    // translate a decoder ID to an index in the codec table
151    size_t decoderIndex = 0;
152    while (decoderIndex < kNbVideoMimeTypes) {
153        if (decoderId == VideoDecoderIds[decoderIndex]) {
154            if (!(plIndex < VideoDecoderCapabilities[decoderIndex].itemAt(0).mProfileLevels.size()))
155            {
156                // asking for invalid profile/level
157                return XA_RESULT_PARAMETER_INVALID;
158            }
159            // we only look at the first codec, OpenMAX AL doesn't let you expose the capabilities
160            //  of multiple codecs
161            //     set the fields we know about
162            pDescr->codecId = decoderId;
163            pDescr->profileSetting = convertOpenMaxIlToAl(VideoDecoderCapabilities[decoderIndex].
164                    itemAt(0).mProfileLevels.itemAt(plIndex).mProfile);
165            pDescr->levelSetting =  convertOpenMaxIlToAl(VideoDecoderCapabilities[decoderIndex].
166                    itemAt(0).mProfileLevels.itemAt(plIndex).mLevel);
167            //     initialize the fields we don't know about
168            pDescr->maxWidth = 0;
169            pDescr->maxHeight = 0;
170            pDescr->maxFrameRate = 0;
171            pDescr->maxBitRate = 0;
172            pDescr->rateControlSupported = 0;
173            break;
174        }
175        decoderIndex++;
176    }
177    return (decoderIndex < kNbVideoMimeTypes) ? XA_RESULT_SUCCESS : XA_RESULT_PARAMETER_INVALID;
178}
179
180} // namespace android
181