AVF: Introduce adoption of AVAssetResourceLoaderDelegate protocol

AVAssetResourceLoaderDelegate allows to load custom resources.

Implemented resourceLoader:shouldWaitForLoadingOfRequestedResource to read data
from QIODevice.

The device should be seekable, and already should have all data available.
Since there is a need to know total size of the stream.

So the media player will wait for QIODevice::readyRead before loading the resource.

Also it requires to have url together with the stream:
QMediaPlayer->setMedia(QUrl("does_not_matter.mp3"), buffer);
Since the backend uses extension to determine type of the stream.

Fixes: QTBUG-69101
Change-Id: I8ab0b69f668ccd67c42a8e5d5c1ad518d3306cce
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/auto/integration/qmediaplayerbackend/tst_qmediaplayerbackend.cpp b/tests/auto/integration/qmediaplayerbackend/tst_qmediaplayerbackend.cpp
index f1be070e8..a2217afc8 100644
--- a/tests/auto/integration/qmediaplayerbackend/tst_qmediaplayerbackend.cpp
+++ b/tests/auto/integration/qmediaplayerbackend/tst_qmediaplayerbackend.cpp
@@ -81,6 +81,7 @@ private slots:
     void multipleSurfaces();
     void metadata();
     void playerStateAtEOS();
+    void playFromBuffer();
 
 private:
     QMediaContent selectVideoFile(const QStringList& mediaCandidates);
@@ -1476,6 +1477,25 @@ void tst_QMediaPlayerBackend::playerStateAtEOS()
     QVERIFY(endOfMediaReceived);
 }
 
+void tst_QMediaPlayerBackend::playFromBuffer()
+{
+    if (localVideoFile.isNull())
+        QSKIP("No supported video file");
+
+    TestVideoSurface surface(false);
+    QMediaPlayer player;
+    player.setVideoOutput(&surface);
+    QFile file(localVideoFile.request().url().toLocalFile());
+    if (!file.open(QIODevice::ReadOnly))
+        QSKIP("Could not open file");
+    player.setMedia(localVideoFile, &file);
+    player.play();
+    QTRY_VERIFY(player.position() >= 1000);
+    if (surface.error() == QAbstractVideoSurface::UnsupportedFormatError)
+        QSKIP("None of the pixel formats is supported by the backend");
+    QVERIFY2(surface.m_totalFrames >= 25, qPrintable(QString("Expected >= 25, got %1").arg(surface.m_totalFrames)));
+}
+
 TestVideoSurface::TestVideoSurface(bool storeFrames):
     m_totalFrames(0),
     m_storeFrames(storeFrames)