status_t
PluginManager::CreateReader(Reader** reader, int32* streamCount,
media_file_format* mff, BDataIO* source)
{
TRACE("PluginManager::CreateReader enter\n");
// The wrapper class will present our source in a more useful
// way, we create an instance which is buffering our reads and
// writes.
BMediaIOWrapper* buffered_source = new BMediaIOWrapper(source);
status_t ret = buffered_source->InitCheck();
if (ret != B_OK)
return ret;
// get list of available readers from the server
entry_ref refs[MAX_READERS];
int32 count;
ret = AddOnManager::GetInstance()->GetReaders(refs, &count,
MAX_READERS);
if (ret != B_OK) {
printf("PluginManager::CreateReader: can't get list of readers: %s\n",
strerror(ret));
return ret;
}
// try each reader by calling it's Sniff function...
for (int32 i = 0; i < count; i++) {
entry_ref ref = refs[i];
MediaPlugin* plugin = GetPlugin(ref);
if (plugin == NULL) {
printf("PluginManager::CreateReader: GetPlugin failed\n");
return B_ERROR;
}
ReaderPlugin* readerPlugin = dynamic_cast<ReaderPlugin*>(plugin);
if (readerPlugin == NULL) {
printf("PluginManager::CreateReader: dynamic_cast failed\n");
PutPlugin(plugin);
return B_ERROR;
}
*reader = readerPlugin->NewReader();
if (*reader == NULL) {
printf("PluginManager::CreateReader: NewReader failed\n");
PutPlugin(plugin);
return B_ERROR;
}
buffered_source->Seek(0, SEEK_SET);
(*reader)->Setup(buffered_source);
(*reader)->fMediaPlugin = plugin;
if ((*reader)->Sniff(streamCount) == B_OK) {
TRACE("PluginManager::CreateReader: Sniff success "
"(%ld stream(s))\n", *streamCount);
(*reader)->GetFileFormatInfo(mff);
return B_OK;
}
DestroyReader(*reader);
*reader = NULL;
}
TRACE("PluginManager::CreateReader leave\n");
return B_MEDIA_NO_HANDLER;
}
status_t
PluginManager::CreateReader(Reader** reader, int32* streamCount,
media_file_format* mff, BDataIO* source)
{
TRACE("PluginManager::CreateReader enter\n");
BPositionIO *seekable_source = dynamic_cast<BPositionIO *>(source);
if (seekable_source == 0) {
printf("PluginManager::CreateReader: non-seekable sources not "
"supported yet\n");
return B_ERROR;
}
// get list of available readers from the server
entry_ref refs[MAX_READERS];
int32 count;
status_t ret = AddOnManager::GetInstance()->GetReaders(refs, &count,
MAX_READERS);
if (ret != B_OK) {
printf("PluginManager::CreateReader: can't get list of readers: %s\n",
strerror(ret));
return ret;
}
// try each reader by calling it's Sniff function...
for (int32 i = 0; i < count; i++) {
entry_ref ref = refs[i];
MediaPlugin* plugin = GetPlugin(ref);
if (plugin == NULL) {
printf("PluginManager::CreateReader: GetPlugin failed\n");
return B_ERROR;
}
ReaderPlugin* readerPlugin = dynamic_cast<ReaderPlugin*>(plugin);
if (readerPlugin == NULL) {
printf("PluginManager::CreateReader: dynamic_cast failed\n");
PutPlugin(plugin);
return B_ERROR;
}
*reader = readerPlugin->NewReader();
if (*reader == NULL) {
printf("PluginManager::CreateReader: NewReader failed\n");
PutPlugin(plugin);
return B_ERROR;
}
seekable_source->Seek(0, SEEK_SET);
(*reader)->Setup(seekable_source);
(*reader)->fMediaPlugin = plugin;
if ((*reader)->Sniff(streamCount) == B_OK) {
TRACE("PluginManager::CreateReader: Sniff success "
"(%ld stream(s))\n", *streamCount);
(*reader)->GetFileFormatInfo(mff);
return B_OK;
}
DestroyReader(*reader);
*reader = NULL;
}
TRACE("PluginManager::CreateReader leave\n");
return B_MEDIA_NO_HANDLER;
}
int
main(int argc, char *argv[])
{
if (argc < 2) {
// missing argument
char *name = strrchr(argv[0], '/');
name = name ? name + 1 : argv[0];
fprintf(stderr, "usage: %s <media-file>\n", name);
return -1;
}
TRACE("\n\n");
TRACE("main: creating plugin...\n");
MediaPlugin *plugin = instantiate_plugin();
TRACE("main: creating reader...\n");
ReaderPlugin *readerplugin;
readerplugin = dynamic_cast<ReaderPlugin *>(plugin);
Reader *reader = readerplugin->NewReader();
TRACE("main: opening source file...\n");
BDataIO *source = new BFile(argv[1], B_READ_ONLY);
TRACE("main: calling setup...\n");
reader->Setup(source);
TRACE("main: creating ...\n");
TRACE("main: copyright: \"%s\"\n", reader->Copyright());
status_t status;
int32 streamCount;
status = reader->Sniff(&streamCount);
if (status != B_OK) {
TRACE("main: Sniff() failed with error %lx (%s)\n", status, strerror(status));
goto err;
}
TRACE("main: Sniff() found %ld streams\n", streamCount);
for (int i = 0; i < streamCount; i++) {
TRACE("main: calling AllocateCookie(stream = %d)\n", i);
status = reader->AllocateCookie(i, &cookies[i]);
if (status != B_OK) {
TRACE("main: AllocateCookie(stream = %d) failed with error 0x%lx (%s)\n",
i, status, strerror(status));
goto err;
}
}
for (int i = 0; i < streamCount; i++) {
TRACE("main: calling GetStreamInfo(stream = %d)\n", i);
int64 frameCount;
bigtime_t duration;
media_format format;
const void *infoBuffer;
size_t infoSize;
status = reader->GetStreamInfo(cookies[i], &frameCount, &duration, &format,
&infoBuffer, &infoSize);
if (status != B_OK) {
TRACE("main: GetStreamInfo(stream = %d) failed with error 0x%lx (%s)\n",
i, status, strerror(status));
goto err;
}
TRACE("main: GetStreamInfo(stream = %d) result: %Ld frames, %.6f sec\n",
i, frameCount, duration / 1000000.0);
}
for (int i = 0; i < streamCount; i++) {
const void *chunkBuffer;
size_t chunkSize;
media_header mediaHeader;
for (int j = 0; j < 5; j++) {
status = reader->GetNextChunk(cookies[i], &chunkBuffer, &chunkSize, &mediaHeader);
if (status != B_OK) {
TRACE("main: GetNextChunk(stream = %d, chunk = %d) failed with error 0x%lx (%s)\n",
i, j, status, strerror(status));
break;
}
}
int64 frame;
bigtime_t time;
time = 1000000; // 1 sec
TRACE("main: calling Seek(stream = %d, time %.6f forward)\n", i, time / 1000000.0);
status = reader->Seek(cookies[i],
B_MEDIA_SEEK_TO_TIME | B_MEDIA_SEEK_CLOSEST_FORWARD, &frame, &time);
TRACE("main: Seek result: time %.6f, frame %Ld\n", time / 1000000.0, frame);
frame = 1000;
TRACE("main: calling Seek(stream = %d, frame %Ld forward)\n", i, frame);
status = reader->Seek(cookies[i],
B_MEDIA_SEEK_TO_FRAME | B_MEDIA_SEEK_CLOSEST_FORWARD, &frame, &time);
TRACE("main: Seek result: time %.6f, frame %Ld\n", time / 1000000.0, frame);
time = 1000000; // 1 sec
TRACE("main: calling Seek(stream = %d, time %.6f backward)\n", i, time / 1000000.0);
status = reader->Seek(cookies[i],
B_MEDIA_SEEK_TO_TIME | B_MEDIA_SEEK_CLOSEST_BACKWARD, &frame, &time);
TRACE("main: Seek result: time %.6f, frame %Ld\n", time / 1000000.0, frame);
frame = 1000;
TRACE("main: calling Seek(stream = %d, frame %Ld backward)\n", i, frame);
status = reader->Seek(cookies[i],
B_MEDIA_SEEK_TO_FRAME | B_MEDIA_SEEK_CLOSEST_BACKWARD, &frame, &time);
TRACE("main: Seek result: time %.6f, frame %Ld\n", time / 1000000.0, frame);
}
for (int i = 0; i < streamCount; i++) {
TRACE("main: calling FreeCookie(stream = %d)\n", i);
status = reader->FreeCookie(cookies[i]);
if (status != B_OK) {
TRACE("main: FreeCookie(stream = %d) failed with error 0x%lx (%s)\n",
i, status, strerror(status));
goto err;
}
}
err:
delete reader;
delete plugin;
delete source;
return 0;
}
