diff options
Diffstat (limited to 'src/gsttools/qgstutils.cpp')
-rw-r--r-- | src/gsttools/qgstutils.cpp | 87 |
1 files changed, 86 insertions, 1 deletions
diff --git a/src/gsttools/qgstutils.cpp b/src/gsttools/qgstutils.cpp index 5176cd96f..5c1276367 100644 --- a/src/gsttools/qgstutils.cpp +++ b/src/gsttools/qgstutils.cpp @@ -45,6 +45,7 @@ #include <QtCore/qbytearray.h> #include <QtCore/qvariant.h> #include <QtCore/qsize.h> +#include <qaudioformat.h> QT_BEGIN_NAMESPACE @@ -143,7 +144,7 @@ QSize QGstUtils::capsResolution(const GstCaps *caps) /*! Returns aspect ratio corrected resolution of \a caps. - If caps doesn't have a valid size, and ampty QSize is returned. + If caps doesn't have a valid size, an empty QSize is returned. */ QSize QGstUtils::capsCorrectedResolution(const GstCaps *caps) { @@ -166,4 +167,88 @@ QSize QGstUtils::capsCorrectedResolution(const GstCaps *caps) return size; } +/*! + *Returns audio format for caps. + If caps doesn't have a valid audio format, an empty QAudioFormat is returned. +*/ + +QAudioFormat QGstUtils::audioFormatForCaps(const GstCaps *caps) +{ + const GstStructure *structure = gst_caps_get_structure(caps, 0); + + QAudioFormat format; + + if (qstrcmp(gst_structure_get_name(structure), "audio/x-raw-int") == 0) { + + format.setCodec("audio/pcm"); + + int endianness = 0; + gst_structure_get_int(structure, "endianness", &endianness); + if (endianness == 1234) + format.setByteOrder(QAudioFormat::LittleEndian); + else if (endianness == 4321) + format.setByteOrder(QAudioFormat::BigEndian); + + gboolean isSigned = FALSE; + gst_structure_get_boolean(structure, "signed", &isSigned); + if (isSigned) + format.setSampleType(QAudioFormat::SignedInt); + else + format.setSampleType(QAudioFormat::UnSignedInt); + + // Number of bits allocated per sample. + int width = 0; + gst_structure_get_int(structure, "width", &width); + + // The number of bits used per sample. This must be less than or equal to the width. + int depth = 0; + gst_structure_get_int(structure, "depth", &depth); + + if (width != depth) { + // Unsupported sample layout. + return QAudioFormat(); + } + format.setSampleSize(width); + + int rate = 0; + gst_structure_get_int(structure, "rate", &rate); + format.setSampleRate(rate); + + int channels = 0; + gst_structure_get_int(structure, "channels", &channels); + format.setChannelCount(channels); + + } else if (qstrcmp(gst_structure_get_name(structure), "audio/x-raw-float") == 0) { + + format.setCodec("audio/pcm"); + + int endianness = 0; + gst_structure_get_int(structure, "endianness", &endianness); + if (endianness == 1234) + format.setByteOrder(QAudioFormat::LittleEndian); + else if (endianness == 4321) + format.setByteOrder(QAudioFormat::BigEndian); + + format.setSampleType(QAudioFormat::Float); + + int width = 0; + gst_structure_get_int(structure, "width", &width); + + format.setSampleSize(width); + + int rate = 0; + gst_structure_get_int(structure, "rate", &rate); + format.setSampleRate(rate); + + int channels = 0; + gst_structure_get_int(structure, "channels", &channels); + format.setChannelCount(channels); + + } else { + return QAudioFormat(); + } + + return format; +} + QT_END_NAMESPACE |