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-rw-r--r--src/gsttools/qgstutils.cpp220
1 files changed, 154 insertions, 66 deletions
diff --git a/src/gsttools/qgstutils.cpp b/src/gsttools/qgstutils.cpp
index 72cf17af..55a0be1e 100644
--- a/src/gsttools/qgstutils.cpp
+++ b/src/gsttools/qgstutils.cpp
@@ -149,15 +149,10 @@ QMap<QByteArray, QVariant> QGstUtils::gstTagListToMap(const GstTagList *tags)
*/
QSize QGstUtils::capsResolution(const GstCaps *caps)
{
- QSize size;
-
- if (caps) {
- const GstStructure *structure = gst_caps_get_structure(caps, 0);
- gst_structure_get_int(structure, "width", &size.rwidth());
- gst_structure_get_int(structure, "height", &size.rheight());
- }
+ if (gst_caps_get_size(caps) == 0)
+ return QSize();
- return size;
+ return structureResolution(gst_caps_get_structure(caps, 0));
}
/*!
@@ -169,14 +164,12 @@ QSize QGstUtils::capsCorrectedResolution(const GstCaps *caps)
QSize size;
if (caps) {
- const GstStructure *structure = gst_caps_get_structure(caps, 0);
- gst_structure_get_int(structure, "width", &size.rwidth());
- gst_structure_get_int(structure, "height", &size.rheight());
+ size = capsResolution(caps);
gint aspectNum = 0;
gint aspectDenum = 0;
if (!size.isEmpty() && gst_structure_get_fraction(
- structure, "pixel-aspect-ratio", &aspectNum, &aspectDenum)) {
+ gst_caps_get_structure(caps, 0), "pixel-aspect-ratio", &aspectNum, &aspectDenum)) {
if (aspectDenum > 0)
size.setWidth(size.width()*aspectNum/aspectDenum);
}
@@ -1048,20 +1041,23 @@ static int indexOfRgbColor(
QVideoSurfaceFormat QGstUtils::formatForCaps(
GstCaps *caps, GstVideoInfo *info, QAbstractVideoBuffer::HandleType handleType)
{
- if (gst_video_info_from_caps(info, caps)) {
- int index = indexOfVideoFormat(info->finfo->format);
+ GstVideoInfo vidInfo;
+ GstVideoInfo *infoPtr = info ? info : &vidInfo;
+
+ if (gst_video_info_from_caps(infoPtr, caps)) {
+ int index = indexOfVideoFormat(infoPtr->finfo->format);
if (index != -1) {
QVideoSurfaceFormat format(
- QSize(info->width, info->height),
+ QSize(infoPtr->width, infoPtr->height),
qt_videoFormatLookup[index].pixelFormat,
handleType);
- if (info->fps_d > 0)
- format.setFrameRate(qreal(info->fps_n) / info->fps_d);
+ if (infoPtr->fps_d > 0)
+ format.setFrameRate(qreal(infoPtr->fps_n) / infoPtr->fps_d);
- if (info->par_d > 0)
- format.setPixelAspectRatio(info->par_n, info->par_d);
+ if (infoPtr->par_d > 0)
+ format.setPixelAspectRatio(infoPtr->par_n, infoPtr->par_d);
return format;
}
@@ -1076,60 +1072,18 @@ QVideoSurfaceFormat QGstUtils::formatForCaps(
{
const GstStructure *structure = gst_caps_get_structure(caps, 0);
- QVideoFrame::PixelFormat pixelFormat = QVideoFrame::Format_Invalid;
int bitsPerPixel = 0;
-
- QSize size;
- gst_structure_get_int(structure, "width", &size.rwidth());
- gst_structure_get_int(structure, "height", &size.rheight());
-
- if (qstrcmp(gst_structure_get_name(structure), "video/x-raw-yuv") == 0) {
- guint32 fourcc = 0;
- gst_structure_get_fourcc(structure, "format", &fourcc);
-
- int index = indexOfYuvColor(fourcc);
- if (index != -1) {
- pixelFormat = qt_yuvColorLookup[index].pixelFormat;
- bitsPerPixel = qt_yuvColorLookup[index].bitsPerPixel;
- }
- } else if (qstrcmp(gst_structure_get_name(structure), "video/x-raw-rgb") == 0) {
- int depth = 0;
- int endianness = 0;
- int red = 0;
- int green = 0;
- int blue = 0;
- int alpha = 0;
-
- gst_structure_get_int(structure, "bpp", &bitsPerPixel);
- gst_structure_get_int(structure, "depth", &depth);
- gst_structure_get_int(structure, "endianness", &endianness);
- gst_structure_get_int(structure, "red_mask", &red);
- gst_structure_get_int(structure, "green_mask", &green);
- gst_structure_get_int(structure, "blue_mask", &blue);
- gst_structure_get_int(structure, "alpha_mask", &alpha);
-
- int index = indexOfRgbColor(bitsPerPixel, depth, endianness, red, green, blue, alpha);
-
- if (index != -1)
- pixelFormat = qt_rgbColorLookup[index].pixelFormat;
- }
+ QSize size = structureResolution(structure);
+ QVideoFrame::PixelFormat pixelFormat = structurePixelFormat(structure, &bitsPerPixel);
if (pixelFormat != QVideoFrame::Format_Invalid) {
QVideoSurfaceFormat format(size, pixelFormat, handleType);
- QPair<int, int> rate;
- gst_structure_get_fraction(structure, "framerate", &rate.first, &rate.second);
-
+ QPair<qreal, qreal> rate = structureFrameRateRange(structure);
if (rate.second)
- format.setFrameRate(qreal(rate.first)/rate.second);
+ format.setFrameRate(rate.second);
- gint aspectNum = 0;
- gint aspectDenum = 0;
- if (gst_structure_get_fraction(
- structure, "pixel-aspect-ratio", &aspectNum, &aspectDenum)) {
- if (aspectDenum > 0)
- format.setPixelAspectRatio(aspectNum, aspectDenum);
- }
+ format.setPixelAspectRatio(structurePixelAspectRatio(structure));
if (bytesPerLine)
*bytesPerLine = ((size.width() * bitsPerPixel / 8) + 3) & ~3;
@@ -1304,6 +1258,118 @@ GstCaps *QGstUtils::videoFilterCaps()
return gst_caps_make_writable(gst_static_caps_get(&staticCaps));
}
+QSize QGstUtils::structureResolution(const GstStructure *s)
+{
+ QSize size;
+
+ int w, h;
+ if (s && gst_structure_get_int(s, "width", &w) && gst_structure_get_int(s, "height", &h)) {
+ size.rwidth() = w;
+ size.rheight() = h;
+ }
+
+ return size;
+}
+
+QVideoFrame::PixelFormat QGstUtils::structurePixelFormat(const GstStructure *structure, int *bpp)
+{
+ QVideoFrame::PixelFormat pixelFormat = QVideoFrame::Format_Invalid;
+
+ if (!structure)
+ return pixelFormat;
+
+#if GST_CHECK_VERSION(1,0,0)
+ Q_UNUSED(bpp);
+
+ if (gst_structure_has_name(structure, "video/x-raw")) {
+ const gchar *s = gst_structure_get_string(structure, "format");
+ if (s) {
+ GstVideoFormat format = gst_video_format_from_string(s);
+ int index = indexOfVideoFormat(format);
+
+ if (index != -1)
+ pixelFormat = qt_videoFormatLookup[index].pixelFormat;
+ }
+ }
+#else
+ if (qstrcmp(gst_structure_get_name(structure), "video/x-raw-yuv") == 0) {
+ guint32 fourcc = 0;
+ gst_structure_get_fourcc(structure, "format", &fourcc);
+
+ int index = indexOfYuvColor(fourcc);
+ if (index != -1) {
+ pixelFormat = qt_yuvColorLookup[index].pixelFormat;
+ if (bpp)
+ *bpp = qt_yuvColorLookup[index].bitsPerPixel;
+ }
+ } else if (qstrcmp(gst_structure_get_name(structure), "video/x-raw-rgb") == 0) {
+ int bitsPerPixel = 0;
+ int depth = 0;
+ int endianness = 0;
+ int red = 0;
+ int green = 0;
+ int blue = 0;
+ int alpha = 0;
+
+ gst_structure_get_int(structure, "bpp", &bitsPerPixel);
+ gst_structure_get_int(structure, "depth", &depth);
+ gst_structure_get_int(structure, "endianness", &endianness);
+ gst_structure_get_int(structure, "red_mask", &red);
+ gst_structure_get_int(structure, "green_mask", &green);
+ gst_structure_get_int(structure, "blue_mask", &blue);
+ gst_structure_get_int(structure, "alpha_mask", &alpha);
+
+ int index = indexOfRgbColor(bitsPerPixel, depth, endianness, red, green, blue, alpha);
+
+ if (index != -1) {
+ pixelFormat = qt_rgbColorLookup[index].pixelFormat;
+ if (bpp)
+ *bpp = qt_rgbColorLookup[index].bitsPerPixel;
+ }
+ }
+#endif
+
+ return pixelFormat;
+}
+
+QSize QGstUtils::structurePixelAspectRatio(const GstStructure *s)
+{
+ QSize ratio(1, 1);
+
+ gint aspectNum = 0;
+ gint aspectDenum = 0;
+ if (s && gst_structure_get_fraction(s, "pixel-aspect-ratio", &aspectNum, &aspectDenum)) {
+ if (aspectDenum > 0) {
+ ratio.rwidth() = aspectNum;
+ ratio.rheight() = aspectDenum;
+ }
+ }
+
+ return ratio;
+}
+
+QPair<qreal, qreal> QGstUtils::structureFrameRateRange(const GstStructure *s)
+{
+ QPair<qreal, qreal> rate;
+
+ if (!s)
+ return rate;
+
+ int n, d;
+ if (gst_structure_get_fraction(s, "framerate", &n, &d)) {
+ rate.second = qreal(n) / d;
+ rate.first = rate.second;
+ } else if (gst_structure_get_fraction(s, "max-framerate", &n, &d)) {
+ rate.second = qreal(n) / d;
+ if (gst_structure_get_fraction(s, "min-framerate", &n, &d))
+ rate.first = qreal(n) / d;
+ else
+ rate.first = qreal(1);
+ }
+
+ return rate;
+}
+
void qt_gst_object_ref_sink(gpointer object)
{
#if GST_CHECK_VERSION(0,10,24)
@@ -1331,6 +1397,15 @@ GstCaps *qt_gst_pad_get_current_caps(GstPad *pad)
#endif
}
+GstCaps *qt_gst_pad_get_caps(GstPad *pad)
+{
+#if GST_CHECK_VERSION(1,0,0)
+ return gst_pad_query_caps(pad, NULL);
+#else
+ return gst_pad_get_caps_reffed(pad);
+#endif
+}
+
GstStructure *qt_gst_structure_new_empty(const char *name)
{
#if GST_CHECK_VERSION(1,0,0)
@@ -1358,6 +1433,19 @@ gboolean qt_gst_element_query_duration(GstElement *element, GstFormat format, gi
#endif
}
+GstCaps *qt_gst_caps_normalize(GstCaps *caps)
+{
+#if GST_CHECK_VERSION(1,0,0)
+ // gst_caps_normalize() takes ownership of the argument in 1.0
+ return gst_caps_normalize(caps);
+#else
+ // in 0.10, it doesn't. Unref the argument to mimic the 1.0 behavior
+ GstCaps *res = gst_caps_normalize(caps);
+ gst_caps_unref(caps);
+ return res;
+#endif
+}
+
QDebug operator <<(QDebug debug, GstCaps *caps)
{
if (caps) {