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qmlgl: Can't use frame info if we don't have a frame

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Fixes segfault accessing vinfo in: GST_VIDEO_FRAME_N_PLANES (&this->v_frame)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5148>
This commit is contained in:
Nirbheek Chauhan 2023-08-04 18:26:35 +05:30 committed by GStreamer Marge Bot
parent 223a0e3b27
commit 14503a7d08
2 changed files with 6 additions and 5 deletions
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9
subprojects/gst-plugins-good/ext/qt/gstqsgmaterial.cc
View file

@ -82,7 +82,7 @@ public:
program()->setUniformValue(m_id_opacity, state.opacity());
GstQSGMaterial *mat = static_cast<GstQSGMaterial *>(newMaterial);
mat->bind(this);
mat->bind(this, this->v_format);
}
char const *const *attributeNames() const override
@ -378,7 +378,7 @@ GstQSGMaterial::getBuffer (gboolean * was_bound)
}
void
GstQSGMaterial::bind(GstQSGMaterialShader *shader)
GstQSGMaterial::bind(GstQSGMaterialShader *shader, GstVideoFormat v_format)
{
const GstGLFuncs *gl;
GstGLContext *context, *qt_context;
@ -473,12 +473,13 @@ out:
if (G_UNLIKELY (use_dummy_tex)) {
QOpenGLContext *qglcontext = QOpenGLContext::currentContext ();
QOpenGLFunctions *funcs = qglcontext->functions ();
const GstVideoFormatInfo *finfo = gst_video_format_get_info (v_format);
/* Create dummy texture if not already present.
* Use the Qt OpenGL functions instead of the GstGL ones,
* since we are using the Qt OpenGL context here, and we must
* be able to delete the texture in the destructor. */
for (int i = GST_VIDEO_FRAME_N_PLANES (&this->v_frame) - 1; i >= 0; i--) {
for (int i = finfo->n_planes - 1; i >= 0; i--) {
shader->program()->setUniformValue(shader->tex_uniforms[i], i);
funcs->glActiveTexture(GL_TEXTURE0 + i);
@ -491,7 +492,7 @@ out:
const int tex_sidelength = 64;
std::vector < guint8 > dummy_data (tex_sidelength * tex_sidelength * 4, 0);
switch (GST_VIDEO_FRAME_FORMAT (&this->v_frame)) {
switch (v_format) {
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_RGB:

2
subprojects/gst-plugins-good/ext/qt/gstqsgmaterial.h
View file

@ -46,7 +46,7 @@ public:
GstBuffer * getBuffer (gboolean * was_bound);
bool compatibleWith(GstVideoInfo *v_info);
void bind(GstQSGMaterialShader *);
void bind(GstQSGMaterialShader *, GstVideoFormat);
/* QSGMaterial */
QSGMaterialShader *createShader() const override;