1 /* sfdb_freesound_mootcher.cpp **********************************************************************
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3 Adapted for Ardour by Ben Loftis, March 2008
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4 Updated to new Freesound API by Colin Fletcher, November 2011
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8 Mootcher Online Access to thefreesoundproject website
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9 http://freesound.iua.upf.edu/
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12 mail for questions/remarks: mootcher@twistedlemon.nl
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13 or go to the freesound website forum
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15 -----------------------------------------------------------------
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18 curl.h (version 7.14.0)
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22 -----------------------------------------------------------------
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25 This program is free software; you can redistribute it and/or
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26 modify it under the terms of the GNU General Public License
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27 as published by the Free Software Foundation; either version 2
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28 of the License, or (at your option) any later version.
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30 This program is distributed in the hope that it will be useful,
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31 but WITHOUT ANY WARRANTY; without even the implied warranty of
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32 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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33 GNU General Public License for more details.
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35 You should have received a copy of the GNU General Public License
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36 along with this program; if not, write to the Free Software
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37 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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40 *************************************************************************************/
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41 #include "sfdb_freesound_mootcher.h"
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43 #include "pbd/xml++.h"
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44 #include "pbd/error.h"
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46 #include <sys/stat.h>
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47 #include <sys/types.h>
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51 #include <glib/gstdio.h>
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55 #include "ardour/audio_library.h"
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56 #include "ardour/rc_configuration.h"
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58 using namespace PBD;
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60 static const std::string base_url = "http://www.freesound.org/api";
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61 static const std::string api_key = "9d77cb8d841b4bcfa960e1aae62224eb"; // ardour3
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63 //------------------------------------------------------------------------
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64 Mootcher::Mootcher()
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65 : curl(curl_easy_init())
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67 cancel_download_btn.set_label (_("Cancel"));
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68 progress_hbox.pack_start (progress_bar, true, true);
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69 progress_hbox.pack_end (cancel_download_btn, false, false);
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70 progress_bar.show();
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71 cancel_download_btn.show();
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72 cancel_download_btn.signal_clicked().connect(sigc::mem_fun (*this, &Mootcher::cancelDownload));
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74 //------------------------------------------------------------------------
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75 Mootcher:: ~Mootcher()
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77 curl_easy_cleanup(curl);
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80 //------------------------------------------------------------------------
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82 void Mootcher::ensureWorkingDir ()
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84 std::string p = ARDOUR::Config->get_freesound_download_dir();
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86 if (!Glib::file_test (p, Glib::FILE_TEST_IS_DIR)) {
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87 if (g_mkdir_with_parents (p.c_str(), 0775) != 0) {
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88 PBD::error << "Unable to create Mootcher working dir" << endmsg;
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93 std::string replace = "/";
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94 size_t pos = basePath.find("\\");
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95 while( pos != std::string::npos ){
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96 basePath.replace(pos, 1, replace);
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97 pos = basePath.find("\\");
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103 //------------------------------------------------------------------------
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104 size_t Mootcher::WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data)
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106 register int realsize = (int)(size * nmemb);
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107 struct MemoryStruct *mem = (struct MemoryStruct *)data;
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109 mem->memory = (char *)realloc(mem->memory, mem->size + realsize + 1);
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112 memcpy(&(mem->memory[mem->size]), ptr, realsize);
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113 mem->size += realsize;
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114 mem->memory[mem->size] = 0;
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120 //------------------------------------------------------------------------
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122 std::string Mootcher::sortMethodString(enum sortMethod sort) {
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123 // given a sort type, returns the string value to be passed to the API to
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124 // sort the results in the requested way.
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127 case sort_duration_desc: return "duration_desc";
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128 case sort_duration_asc: return "duration_asc";
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129 case sort_created_desc: return "created_desc";
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130 case sort_created_asc: return "created_asc";
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131 case sort_downloads_desc: return "downloads_desc";
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132 case sort_downloads_asc: return "downloads_asc";
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133 case sort_rating_desc: return "rating_desc";
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134 case sort_rating_asc: return "rating_asc";
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135 default: return "";
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139 //------------------------------------------------------------------------
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140 void Mootcher::setcUrlOptions()
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142 // basic init for curl
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143 curl_global_init(CURL_GLOBAL_ALL);
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144 // some servers don't like requests that are made without a user-agent field, so we provide one
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145 curl_easy_setopt(curl, CURLOPT_USERAGENT, "libcurl-agent/1.0");
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146 // setup curl error buffer
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147 curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errorBuffer);
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148 // Allow redirection
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149 curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
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151 // Allow connections to time out (without using signals)
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152 curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
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153 curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 30);
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158 std::string Mootcher::doRequest(std::string uri, std::string params)
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160 std::string result;
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161 struct MemoryStruct xml_page;
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162 xml_page.memory = NULL;
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166 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
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167 curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *) &xml_page);
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169 // curl_easy_setopt(curl, CURLOPT_HTTPGET, 1);
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170 // curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postMessage.c_str());
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171 // curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, -1);
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174 std::string url = base_url + uri + "?";
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175 if (params != "") {
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176 url += params + "&api_key=" + api_key + "&format=xml";
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178 url += "api_key=" + api_key + "&format=xml";
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181 curl_easy_setopt(curl, CURLOPT_URL, url.c_str() );
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183 // perform online request
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184 CURLcode res = curl_easy_perform(curl);
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186 error << string_compose (_("curl error %1 (%2)"), res, curl_easy_strerror(res)) << endmsg;
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191 if (xml_page.memory) {
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192 result = xml_page.memory;
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195 free (xml_page.memory);
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196 xml_page.memory = NULL;
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203 std::string Mootcher::searchText(std::string query, int page, std::string filter, enum sortMethod sort)
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205 std::string params = "";
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209 snprintf(buf, 23, "p=%d&", page);
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213 char *eq = curl_easy_escape(curl, query.c_str(), query.length());
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214 params += "q=\"" + std::string(eq) + "\"";
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217 if (filter != "") {
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218 char *ef = curl_easy_escape(curl, filter.c_str(), filter.length());
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219 params += "&f=" + std::string(ef);
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224 params += "&s=" + sortMethodString(sort);
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226 params += "&fields=id,original_filename,duration,filesize,samplerate,license,serve";
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227 params += "&sounds_per_page=100";
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229 return doRequest("/sounds/search", params);
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232 //------------------------------------------------------------------------
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234 std::string Mootcher::getSoundResourceFile(std::string ID)
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237 std::string originalSoundURI;
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238 std::string audioFileName;
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242 // download the xmlfile into xml_page
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243 xml = doRequest("/sounds/" + ID, "");
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246 doc.read_buffer( xml.c_str() );
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247 XMLNode *freesound = doc.root();
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249 // if the page is not a valid xml document with a 'freesound' root
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250 if (freesound == NULL) {
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251 error << _("getSoundResourceFile: There is no valid root in the xml file") << endmsg;
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255 if (strcmp(doc.root()->name().c_str(), "response") != 0) {
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256 error << string_compose (_("getSoundResourceFile: root = %1, != response"), doc.root()->name()) << endmsg;
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260 XMLNode *name = freesound->child("original_filename");
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262 // get the file name and size from xml file
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265 audioFileName = Glib::build_filename (basePath, ID + "-" + name->child("text")->content());
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267 //store all the tags in the database
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268 XMLNode *tags = freesound->child("tags");
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270 XMLNodeList children = tags->children();
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271 XMLNodeConstIterator niter;
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272 std::vector<std::string> strings;
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273 for (niter = children.begin(); niter != children.end(); ++niter) {
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274 XMLNode *node = *niter;
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275 if( strcmp( node->name().c_str(), "resource") == 0 ) {
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276 XMLNode *text = node->child("text");
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278 // std::cerr << "tag: " << text->content() << std::endl;
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279 strings.push_back(text->content());
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283 ARDOUR::Library->set_tags (std::string("//")+audioFileName, strings);
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284 ARDOUR::Library->save_changes ();
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288 return audioFileName;
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291 int audioFileWrite(void *buffer, size_t size, size_t nmemb, void *file)
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293 return (int)fwrite(buffer, size, nmemb, (FILE*) file);
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296 //------------------------------------------------------------------------
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297 std::string Mootcher::getAudioFile(std::string originalFileName, std::string ID, std::string audioURL, SoundFileBrowser *caller)
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299 ensureWorkingDir();
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300 audioFileName = Glib::build_filename (basePath, ID + "-" + originalFileName);
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302 // check to see if audio file already exists
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303 FILE *testFile = g_fopen(audioFileName.c_str(), "r");
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305 fseek (testFile , 0 , SEEK_END);
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306 if (ftell (testFile) > 256) {
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308 return audioFileName;
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311 // else file was small, probably an error, delete it and try again
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313 remove( audioFileName.c_str() );
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320 // if already cancelling a previous download, bail out here ( this can happen b/c getAudioFile gets called by various UI update funcs )
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321 if ( caller->freesound_download_cancel ) {
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325 // now download the actual file
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327 theFile = g_fopen( audioFileName.c_str(), "wb" );
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333 // create the download url
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334 audioURL += "?api_key=" + api_key;
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337 curl_easy_setopt(curl, CURLOPT_URL, audioURL.c_str() );
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338 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, audioFileWrite);
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339 curl_easy_setopt(curl, CURLOPT_WRITEDATA, theFile);
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341 /* hack to get rid of the barber-pole stripes */
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342 caller->freesound_progress_bar.hide();
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343 caller->freesound_progress_bar.show();
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346 prog = string_compose (_("%1"), originalFileName);
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347 caller->freesound_progress_bar.set_text(prog);
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349 curl_easy_setopt (curl, CURLOPT_NOPROGRESS, 0); // turn on the progress bar
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350 curl_easy_setopt (curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
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351 curl_easy_setopt (curl, CURLOPT_PROGRESSDATA, caller);
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353 CURLcode res = curl_easy_perform(curl);
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356 curl_easy_setopt (curl, CURLOPT_NOPROGRESS, 1); // turn off the progress bar
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357 caller->freesound_progress_bar.set_fraction(0.0);
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358 caller->freesound_progress_bar.set_text("");
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361 /* it's not an error if the user pressed the stop button */
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362 if (res != CURLE_ABORTED_BY_CALLBACK) {
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363 error << string_compose (_("curl error %1 (%2)"), res, curl_easy_strerror(res)) << endmsg;
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365 remove( audioFileName.c_str() );
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368 // now download the tags &c.
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369 getSoundResourceFile(ID);
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372 return audioFileName;
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376 int Mootcher::progress_callback(void *caller, double dltotal, double dlnow, double /*ultotal*/, double /*ulnow*/)
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379 SoundFileBrowser *sfb = (SoundFileBrowser *) caller;
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380 //XXX I hope it's OK to do GTK things in this callback. Otherwise
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381 // I'll have to do stuff like in interthread_progress_window.
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382 if (sfb->freesound_download_cancel) {
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387 sfb->freesound_progress_bar.set_fraction(dlnow/dltotal);
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388 /* Make sure the progress widget gets updated */
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389 while (Glib::MainContext::get_default()->iteration (false)) {
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