Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 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 | |
Andreas Huber | 63d524f | 2009-10-19 10:15:44 -0700 | [diff] [blame] | 17 | #include "include/stagefright_string.h" |
Andreas Huber | bd7b43b | 2009-10-13 10:22:55 -0700 | [diff] [blame] | 18 | #include "include/HTTPStream.h" |
| 19 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 20 | #include <stdlib.h> |
| 21 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 22 | #include <media/stagefright/MediaBuffer.h> |
| 23 | #include <media/stagefright/MediaBufferGroup.h> |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 24 | #include <media/stagefright/MediaDebug.h> |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 25 | #include <media/stagefright/MediaDefs.h> |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 26 | #include <media/stagefright/MetaData.h> |
| 27 | #include <media/stagefright/ShoutcastSource.h> |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 28 | |
| 29 | namespace android { |
| 30 | |
| 31 | ShoutcastSource::ShoutcastSource(HTTPStream *http) |
| 32 | : mHttp(http), |
| 33 | mMetaDataOffset(0), |
| 34 | mBytesUntilMetaData(0), |
| 35 | mGroup(NULL), |
| 36 | mStarted(false) { |
| 37 | string metaint; |
| 38 | if (mHttp->find_header_value("icy-metaint", &metaint)) { |
| 39 | char *end; |
| 40 | const char *start = metaint.c_str(); |
| 41 | mMetaDataOffset = strtol(start, &end, 10); |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 42 | CHECK(end > start && *end == '\0'); |
| 43 | CHECK(mMetaDataOffset > 0); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 44 | |
| 45 | mBytesUntilMetaData = mMetaDataOffset; |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | ShoutcastSource::~ShoutcastSource() { |
| 50 | if (mStarted) { |
| 51 | stop(); |
| 52 | } |
| 53 | |
| 54 | delete mHttp; |
| 55 | mHttp = NULL; |
| 56 | } |
| 57 | |
| 58 | status_t ShoutcastSource::start(MetaData *) { |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 59 | CHECK(!mStarted); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 60 | |
| 61 | mGroup = new MediaBufferGroup; |
| 62 | mGroup->add_buffer(new MediaBuffer(4096)); // XXX |
| 63 | |
| 64 | mStarted = true; |
| 65 | |
| 66 | return OK; |
| 67 | } |
| 68 | |
| 69 | status_t ShoutcastSource::stop() { |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 70 | CHECK(mStarted); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 71 | |
| 72 | delete mGroup; |
| 73 | mGroup = NULL; |
| 74 | |
| 75 | mStarted = false; |
| 76 | |
| 77 | return OK; |
| 78 | } |
| 79 | |
| 80 | sp<MetaData> ShoutcastSource::getFormat() { |
| 81 | sp<MetaData> meta = new MetaData; |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 82 | meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_MPEG); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 83 | meta->setInt32(kKeySampleRate, 44100); |
| 84 | meta->setInt32(kKeyChannelCount, 2); // XXX |
| 85 | |
| 86 | return meta; |
| 87 | } |
| 88 | |
| 89 | status_t ShoutcastSource::read( |
| 90 | MediaBuffer **out, const ReadOptions *options) { |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 91 | CHECK(mStarted); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 92 | |
| 93 | *out = NULL; |
| 94 | |
| 95 | int64_t seekTimeUs; |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame^] | 96 | ReadOptions::SeekMode mode; |
| 97 | if (options && options->getSeekTo(&seekTimeUs, &mode)) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 98 | return ERROR_UNSUPPORTED; |
| 99 | } |
| 100 | |
| 101 | MediaBuffer *buffer; |
| 102 | status_t err = mGroup->acquire_buffer(&buffer); |
| 103 | if (err != OK) { |
| 104 | return err; |
| 105 | } |
| 106 | |
| 107 | *out = buffer; |
| 108 | |
| 109 | size_t num_bytes = buffer->size(); |
| 110 | if (mMetaDataOffset > 0 && num_bytes > mBytesUntilMetaData) { |
| 111 | num_bytes = mBytesUntilMetaData; |
| 112 | } |
| 113 | |
| 114 | ssize_t n = mHttp->receive(buffer->data(), num_bytes); |
| 115 | |
| 116 | if (n <= 0) { |
| 117 | return (status_t)n; |
| 118 | } |
| 119 | |
| 120 | buffer->set_range(0, n); |
| 121 | |
| 122 | mBytesUntilMetaData -= (size_t)n; |
| 123 | |
| 124 | if (mBytesUntilMetaData == 0) { |
| 125 | unsigned char num_16_byte_blocks = 0; |
| 126 | n = mHttp->receive((char *)&num_16_byte_blocks, 1); |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 127 | CHECK_EQ(n, 1); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 128 | |
| 129 | char meta[255 * 16]; |
| 130 | size_t meta_size = num_16_byte_blocks * 16; |
| 131 | size_t meta_length = 0; |
| 132 | while (meta_length < meta_size) { |
| 133 | n = mHttp->receive(&meta[meta_length], meta_size - meta_length); |
| 134 | if (n <= 0) { |
| 135 | return (status_t)n; |
| 136 | } |
| 137 | |
| 138 | meta_length += (size_t) n; |
| 139 | } |
| 140 | |
| 141 | while (meta_length > 0 && meta[meta_length - 1] == '\0') { |
| 142 | --meta_length; |
| 143 | } |
| 144 | |
| 145 | if (meta_length > 0) { |
| 146 | // Technically we should probably attach this meta data to the |
| 147 | // next buffer. XXX |
| 148 | buffer->meta_data()->setData('shou', 'shou', meta, meta_length); |
| 149 | } |
| 150 | |
| 151 | mBytesUntilMetaData = mMetaDataOffset; |
| 152 | } |
| 153 | |
| 154 | return OK; |
| 155 | } |
| 156 | |
| 157 | } // namespace android |
| 158 | |