1/*
2 * Copyright (C) 2012 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#define LOG_TAG "TimedTextSRTSource_test"
18#include <utils/Log.h>
19
20#include <gtest/gtest.h>
21
22#include <binder/Parcel.h>
23#include <media/stagefright/foundation/AString.h>
24#include <media/stagefright/DataSource.h>
25#include <media/stagefright/MediaErrors.h>
26#include <utils/misc.h>
27
28#include <TimedTextSource.h>
29#include <TimedTextSRTSource.h>
30
31namespace android {
32namespace test {
33
34static const int kSecToUsec = 1000000;
35static const int kSecToMsec = 1000;
36static const int kMsecToUsec = 1000;
37
38/* SRT format (http://en.wikipedia.org/wiki/SubRip)
39 *   Subtitle number
40 *   Start time --> End time
41 *   Text of subtitle (one or more lines)
42 *   Blank lines
43 */
44static const char *kSRTString =
45    "1\n00:00:1,000 --> 00:00:1,500\n1\n\n"
46    "2\n00:00:2,000 --> 00:00:2,500\n2\n\n"
47    "3\n00:00:3,000 --> 00:00:3,500\n3\n\n"
48    "4\n00:00:4,000 --> 00:00:4,500\n4\n\n"
49    "5\n00:00:5,000 --> 00:00:5,500\n5\n\n"
50    // edge case : previos end time = next start time
51    "6\n00:00:5,500 --> 00:00:5,800\n6\n\n"
52    "7\n00:00:5,800 --> 00:00:6,000\n7\n\n"
53    "8\n00:00:6,000 --> 00:00:7,000\n8\n\n";
54
55class SRTDataSourceStub : public DataSource {
56public:
57    SRTDataSourceStub(const char *data, size_t size) :
58        mData(data), mSize(size) {}
59    virtual ~SRTDataSourceStub() {}
60
61    virtual status_t initCheck() const {
62        return OK;
63    }
64
65    virtual ssize_t readAt(off64_t offset, void *data, size_t size) {
66        if (offset >= mSize) return 0;
67
68        ssize_t avail = mSize - offset;
69        if (avail > size) {
70            avail = size;
71        }
72        memcpy(data, mData + offset, avail);
73        return avail;
74    }
75
76private:
77    const char *mData;
78    size_t mSize;
79};
80
81class TimedTextSRTSourceTest : public testing::Test {
82protected:
83    void SetUp() {
84        sp<DataSource> stub= new SRTDataSourceStub(
85                kSRTString,
86                strlen(kSRTString));
87        mSource = new TimedTextSRTSource(stub);
88        mSource->start();
89    }
90
91    void CheckStartTimeMs(const Parcel& parcel, int32_t timeMs) {
92        int32_t intval;
93        parcel.setDataPosition(8);
94        parcel.readInt32(&intval);
95        EXPECT_EQ(timeMs, intval);
96    }
97
98    void CheckDataEquals(const Parcel& parcel, const char* content) {
99        int32_t intval;
100        parcel.setDataPosition(16);
101        parcel.readInt32(&intval);
102        parcel.setDataPosition(24);
103        const char* data = (const char*) parcel.readInplace(intval);
104
105        int32_t content_len = strlen(content);
106        EXPECT_EQ(content_len, intval);
107        EXPECT_TRUE(strncmp(data, content, content_len) == 0);
108    }
109
110    sp<TimedTextSource> mSource;
111    int64_t startTimeUs;
112    int64_t endTimeUs;
113    Parcel parcel;
114    AString subtitle;
115    status_t err;
116};
117
118TEST_F(TimedTextSRTSourceTest, readAll) {
119    for (int i = 1; i <= 5; i++) {
120        err = mSource->read(&startTimeUs, &endTimeUs, &parcel);
121        EXPECT_EQ(OK, err);
122        CheckStartTimeMs(parcel, i * kSecToMsec);
123        subtitle = StringPrintf("%d\n\n", i);
124        CheckDataEquals(parcel, subtitle.c_str());
125    }
126    // read edge cases
127    err = mSource->read(&startTimeUs, &endTimeUs, &parcel);
128    EXPECT_EQ(OK, err);
129    CheckStartTimeMs(parcel, 5500);
130    subtitle = StringPrintf("6\n\n");
131    CheckDataEquals(parcel, subtitle.c_str());
132
133    err = mSource->read(&startTimeUs, &endTimeUs, &parcel);
134    EXPECT_EQ(OK, err);
135    CheckStartTimeMs(parcel, 5800);
136    subtitle = StringPrintf("7\n\n");
137    CheckDataEquals(parcel, subtitle.c_str());
138
139    err = mSource->read(&startTimeUs, &endTimeUs, &parcel);
140    EXPECT_EQ(OK, err);
141    CheckStartTimeMs(parcel, 6000);
142    subtitle = StringPrintf("8\n\n");
143    CheckDataEquals(parcel, subtitle.c_str());
144
145    err = mSource->read(&startTimeUs, &endTimeUs, &parcel);
146    EXPECT_EQ(ERROR_END_OF_STREAM, err);
147}
148
149TEST_F(TimedTextSRTSourceTest, seekTimeIsEarlierThanFirst) {
150    MediaSource::ReadOptions options;
151    options.setSeekTo(500, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
152    err = mSource->read(&startTimeUs, &endTimeUs, &parcel, &options);
153    EXPECT_EQ(OK, err);
154    EXPECT_EQ(1 * kSecToUsec, startTimeUs);
155    CheckStartTimeMs(parcel, 1 * kSecToMsec);
156}
157
158TEST_F(TimedTextSRTSourceTest, seekTimeIsLaterThanLast) {
159    MediaSource::ReadOptions options;
160    options.setSeekTo(7 * kSecToUsec, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
161    err = mSource->read(&startTimeUs, &endTimeUs, &parcel, &options);
162    EXPECT_EQ(ERROR_END_OF_STREAM, err);
163
164    options.setSeekTo(8 * kSecToUsec, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
165    err = mSource->read(&startTimeUs, &endTimeUs, &parcel, &options);
166    EXPECT_EQ(ERROR_END_OF_STREAM, err);
167}
168
169TEST_F(TimedTextSRTSourceTest, seekTimeIsMatched) {
170    for (int i = 1; i <= 5; i++) {
171        MediaSource::ReadOptions options;
172        options.setSeekTo(i * kSecToUsec, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
173        err = mSource->read(&startTimeUs, &endTimeUs, &parcel, &options);
174        EXPECT_EQ(OK, err);
175        EXPECT_EQ(i * kSecToUsec, startTimeUs);
176
177        options.setSeekTo(i * kSecToUsec + 100, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
178        err = mSource->read(&startTimeUs, &endTimeUs, &parcel, &options);
179        EXPECT_EQ(OK, err);
180        EXPECT_EQ(i * kSecToUsec, startTimeUs);
181    }
182}
183
184TEST_F(TimedTextSRTSourceTest, seekTimeInBetweenTwo) {
185    for (int i = 1; i <= 4; i++) {
186        MediaSource::ReadOptions options;
187        options.setSeekTo(i * kSecToUsec + 500000, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
188        err = mSource->read(&startTimeUs, &endTimeUs, &parcel, &options);
189        EXPECT_EQ(OK, err);
190        EXPECT_EQ((i + 1) * kSecToUsec, startTimeUs);
191
192        options.setSeekTo(i * kSecToUsec + 600000, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
193        err = mSource->read(&startTimeUs, &endTimeUs, &parcel, &options);
194        EXPECT_EQ(OK, err);
195        EXPECT_EQ((i + 1) * kSecToUsec, startTimeUs);
196    }
197}
198
199TEST_F(TimedTextSRTSourceTest, checkEdgeCase) {
200    MediaSource::ReadOptions options;
201    options.setSeekTo(5500 * kMsecToUsec, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
202    err = mSource->read(&startTimeUs, &endTimeUs, &parcel, &options);
203    EXPECT_EQ(OK, err);
204    EXPECT_EQ(5500 * kMsecToUsec, startTimeUs);
205    subtitle = StringPrintf("6\n\n");
206    CheckDataEquals(parcel, subtitle.c_str());
207
208    options.setSeekTo(5800 * kMsecToUsec, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
209    err = mSource->read(&startTimeUs, &endTimeUs, &parcel, &options);
210    EXPECT_EQ(OK, err);
211    EXPECT_EQ(5800 * kMsecToUsec, startTimeUs);
212    subtitle = StringPrintf("7\n\n");
213    CheckDataEquals(parcel, subtitle.c_str());
214
215    options.setSeekTo(6000 * kMsecToUsec, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
216    err = mSource->read(&startTimeUs, &endTimeUs, &parcel, &options);
217    EXPECT_EQ(OK, err);
218    EXPECT_EQ(6000 * kMsecToUsec, startTimeUs);
219    subtitle = StringPrintf("8\n\n");
220    CheckDataEquals(parcel, subtitle.c_str());
221}
222
223}  // namespace test
224}  // namespace android
225