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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-25 01:30:38 +00:00
[594/906] filter: update for up/download API changes and scaling fixes
This commit is contained in:
Matthew Waters
parent
aef7f01a62
commit
e969f6d904
2 changed files with 490 additions and 66 deletions
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@ -66,6 +66,8 @@ static gboolean gst_gl_filter_query (GstBaseTransform * trans,
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GstPadDirection direction, GstQuery * query);
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static GstCaps *gst_gl_filter_transform_caps (GstBaseTransform * bt,
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GstPadDirection direction, GstCaps * caps, GstCaps * filter);
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static GstCaps *gst_gl_filter_fixate_caps (GstBaseTransform * bt,
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GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
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static void gst_gl_filter_reset (GstGLFilter * filter);
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static gboolean gst_gl_filter_start (GstBaseTransform * bt);
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static gboolean gst_gl_filter_stop (GstBaseTransform * bt);
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@ -98,6 +100,7 @@ gst_gl_filter_class_init (GstGLFilterClass * klass)
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GST_BASE_TRANSFORM_CLASS (klass)->transform_caps =
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gst_gl_filter_transform_caps;
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GST_BASE_TRANSFORM_CLASS (klass)->fixate_caps = gst_gl_filter_fixate_caps;
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GST_BASE_TRANSFORM_CLASS (klass)->transform = gst_gl_filter_transform;
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GST_BASE_TRANSFORM_CLASS (klass)->query = gst_gl_filter_query;
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GST_BASE_TRANSFORM_CLASS (klass)->start = gst_gl_filter_start;
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@ -297,6 +300,334 @@ gst_gl_filter_stop_gl (GstGLDisplay * display, gpointer data)
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filter_class->display_reset_cb (filter);
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}
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static GstCaps *
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gst_gl_filter_fixate_caps (GstBaseTransform * bt,
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GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
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{
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GstStructure *ins, *outs;
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const GValue *from_par, *to_par;
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GValue fpar = { 0, }, tpar = {
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0,};
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othercaps = gst_caps_truncate (othercaps);
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othercaps = gst_caps_make_writable (othercaps);
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GST_DEBUG_OBJECT (bt, "trying to fixate othercaps %" GST_PTR_FORMAT
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" based on caps %" GST_PTR_FORMAT, othercaps, caps);
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ins = gst_caps_get_structure (caps, 0);
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outs = gst_caps_get_structure (othercaps, 0);
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from_par = gst_structure_get_value (ins, "pixel-aspect-ratio");
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to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
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/* If we're fixating from the sinkpad we always set the PAR and
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* assume that missing PAR on the sinkpad means 1/1 and
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* missing PAR on the srcpad means undefined
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*/
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if (direction == GST_PAD_SINK) {
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if (!from_par) {
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g_value_init (&fpar, GST_TYPE_FRACTION);
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gst_value_set_fraction (&fpar, 1, 1);
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from_par = &fpar;
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}
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if (!to_par) {
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g_value_init (&tpar, GST_TYPE_FRACTION);
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gst_value_set_fraction (&tpar, 1, 1);
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to_par = &tpar;
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}
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} else {
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if (!to_par) {
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g_value_init (&tpar, GST_TYPE_FRACTION);
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gst_value_set_fraction (&tpar, 1, 1);
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to_par = &tpar;
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gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
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NULL);
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}
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if (!from_par) {
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g_value_init (&fpar, GST_TYPE_FRACTION);
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gst_value_set_fraction (&fpar, 1, 1);
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from_par = &fpar;
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}
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}
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/* we have both PAR but they might not be fixated */
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{
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gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
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gint w = 0, h = 0;
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gint from_dar_n, from_dar_d;
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gint num, den;
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/* from_par should be fixed */
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g_return_val_if_fail (gst_value_is_fixed (from_par), othercaps);
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from_par_n = gst_value_get_fraction_numerator (from_par);
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from_par_d = gst_value_get_fraction_denominator (from_par);
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gst_structure_get_int (ins, "width", &from_w);
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gst_structure_get_int (ins, "height", &from_h);
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gst_structure_get_int (outs, "width", &w);
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gst_structure_get_int (outs, "height", &h);
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/* if both width and height are already fixed, we can't do anything
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* about it anymore */
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if (w && h) {
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gint n = 1, d = 1;
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GST_DEBUG_OBJECT (bt, "dimensions already set to %dx%d, not fixating",
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w, h);
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if (!gst_value_is_fixed (to_par)) {
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GST_DEBUG_OBJECT (bt, "fixating to_par to %dx%d", n, d);
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if (gst_structure_has_field (outs, "pixel-aspect-ratio"))
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gst_structure_fixate_field_nearest_fraction (outs,
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"pixel-aspect-ratio", 1, 1);
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else if (n != d)
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gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
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1, 1, NULL);
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}
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goto done;
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}
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/* Calculate input DAR */
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if (!gst_util_fraction_multiply (from_w, from_h, from_par_n, from_par_d,
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&from_dar_n, &from_dar_d)) {
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GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
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("Error calculating the output scaled size - integer overflow"));
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goto done;
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}
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GST_DEBUG_OBJECT (bt, "Input DAR is %d/%d", from_dar_n, from_dar_d);
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/* If either width or height are fixed there's not much we
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* can do either except choosing a height or width and PAR
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* that matches the DAR as good as possible
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*/
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if (h) {
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gint num, den;
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GST_DEBUG_OBJECT (bt, "height is fixed (%d)", h);
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if (!gst_value_is_fixed (to_par)) {
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gst_value_set_fraction (&tpar, 1, 1);
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}
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/* PAR is fixed, choose the height that is nearest to the
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* height with the same DAR */
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to_par_n = gst_value_get_fraction_numerator (to_par);
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to_par_d = gst_value_get_fraction_denominator (to_par);
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GST_DEBUG_OBJECT (bt, "PAR is fixed %d/%d", to_par_n, to_par_d);
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if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
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to_par_n, &num, &den)) {
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GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
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("Error calculating the output scaled size - integer overflow"));
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goto done;
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}
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w = (guint) gst_util_uint64_scale_int (h, num, den);
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gst_structure_fixate_field_nearest_int (outs, "width", w);
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goto done;
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} else if (w) {
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gint num, den;
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GST_DEBUG_OBJECT (bt, "width is fixed (%d)", w);
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if (!gst_value_is_fixed (to_par)) {
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gst_value_set_fraction (&tpar, 1, 1);
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}
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/* PAR is fixed, choose the height that is nearest to the
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* height with the same DAR */
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to_par_n = gst_value_get_fraction_numerator (to_par);
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to_par_d = gst_value_get_fraction_denominator (to_par);
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GST_DEBUG_OBJECT (bt, "PAR is fixed %d/%d", to_par_n, to_par_d);
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if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
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to_par_n, &num, &den)) {
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GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
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("Error calculating the output scaled size - integer overflow"));
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goto done;
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}
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h = (guint) gst_util_uint64_scale_int (w, den, num);
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gst_structure_fixate_field_nearest_int (outs, "height", h);
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goto done;
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} else if (gst_value_is_fixed (to_par)) {
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GstStructure *tmp;
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gint set_h, set_w, f_h, f_w;
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to_par_n = gst_value_get_fraction_numerator (to_par);
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to_par_d = gst_value_get_fraction_denominator (to_par);
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/* Calculate scale factor for the PAR change */
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if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_n,
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to_par_d, &num, &den)) {
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GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
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("Error calculating the output scaled size - integer overflow"));
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goto done;
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}
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/* Try to keep the input height */
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tmp = gst_structure_copy (outs);
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gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
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gst_structure_get_int (tmp, "height", &set_h);
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/* This might have failed but try to scale the width
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* to keep the DAR nonetheless */
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w = (guint) gst_util_uint64_scale_int (set_h, num, den);
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gst_structure_fixate_field_nearest_int (tmp, "width", w);
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gst_structure_get_int (tmp, "width", &set_w);
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gst_structure_free (tmp);
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/* We kept the DAR and the height is nearest to the original height */
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if (set_w == w) {
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gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
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G_TYPE_INT, set_h, NULL);
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goto done;
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}
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f_h = set_h;
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f_w = set_w;
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/* If the former failed, try to keep the input width at least */
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tmp = gst_structure_copy (outs);
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gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
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gst_structure_get_int (tmp, "width", &set_w);
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/* This might have failed but try to scale the width
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* to keep the DAR nonetheless */
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h = (guint) gst_util_uint64_scale_int (set_w, den, num);
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gst_structure_fixate_field_nearest_int (tmp, "height", h);
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gst_structure_get_int (tmp, "height", &set_h);
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gst_structure_free (tmp);
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/* We kept the DAR and the width is nearest to the original width */
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if (set_h == h) {
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gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
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G_TYPE_INT, set_h, NULL);
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goto done;
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}
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/* If all this failed, keep the height that was nearest to the orignal
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* height and the nearest possible width. This changes the DAR but
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* there's not much else to do here.
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*/
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gst_structure_set (outs, "width", G_TYPE_INT, f_w, "height", G_TYPE_INT,
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f_h, NULL);
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goto done;
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} else {
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GstStructure *tmp;
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gint set_h, set_w, set_par_n, set_par_d, tmp2;
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/* width, height and PAR are not fixed */
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/* First try to keep the height and width as good as possible
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* and scale PAR */
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tmp = gst_structure_copy (outs);
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gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
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gst_structure_get_int (tmp, "height", &set_h);
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gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
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gst_structure_get_int (tmp, "width", &set_w);
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if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, set_w,
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&to_par_n, &to_par_d)) {
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GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
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("Error calculating the output scaled size - integer overflow"));
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goto done;
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}
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if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
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gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
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gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
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to_par_n, to_par_d);
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gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
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&set_par_d);
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gst_structure_free (tmp);
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if (set_par_n == to_par_n && set_par_d == to_par_d) {
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gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
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G_TYPE_INT, set_h, NULL);
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if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
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set_par_n != set_par_d)
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gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
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set_par_n, set_par_d, NULL);
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goto done;
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}
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/* Otherwise try to scale width to keep the DAR with the set
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* PAR and height */
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if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
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set_par_n, &num, &den)) {
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GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
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("Error calculating the output scaled size - integer overflow"));
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goto done;
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}
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w = (guint) gst_util_uint64_scale_int (set_h, num, den);
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tmp = gst_structure_copy (outs);
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gst_structure_fixate_field_nearest_int (tmp, "width", w);
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gst_structure_get_int (tmp, "width", &tmp2);
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gst_structure_free (tmp);
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if (tmp2 == w) {
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gst_structure_set (outs, "width", G_TYPE_INT, tmp2, "height",
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G_TYPE_INT, set_h, NULL);
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if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
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set_par_n != set_par_d)
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gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
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set_par_n, set_par_d, NULL);
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goto done;
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}
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/* ... or try the same with the height */
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h = (guint) gst_util_uint64_scale_int (set_w, den, num);
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tmp = gst_structure_copy (outs);
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gst_structure_fixate_field_nearest_int (tmp, "height", h);
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gst_structure_get_int (tmp, "height", &tmp2);
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gst_structure_free (tmp);
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if (tmp2 == h) {
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gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
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G_TYPE_INT, tmp2, NULL);
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if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
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set_par_n != set_par_d)
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gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
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set_par_n, set_par_d, NULL);
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goto done;
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}
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/* If all fails we can't keep the DAR and take the nearest values
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* for everything from the first try */
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gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
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G_TYPE_INT, set_h, NULL);
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if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
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set_par_n != set_par_d)
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gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
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set_par_n, set_par_d, NULL);
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}
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}
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done:
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othercaps = gst_caps_fixate (othercaps);
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GST_DEBUG_OBJECT (bt, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
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if (from_par == &fpar)
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g_value_unset (&fpar);
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if (to_par == &tpar)
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g_value_unset (&tpar);
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return othercaps;
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}
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static GstCaps *
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gst_gl_filter_transform_caps (GstBaseTransform * bt,
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GstPadDirection direction, GstCaps * caps, GstCaps * filter)
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@ -319,9 +650,9 @@ gst_gl_filter_transform_caps (GstBaseTransform * bt,
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structure = gst_structure_copy (structure);
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// gst_structure_set (structure,
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// "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
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// "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
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gst_structure_set (structure,
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"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
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"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
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gst_structure_remove_field (structure, "format");
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@ -367,6 +698,7 @@ gst_gl_filter_set_caps (GstBaseTransform * bt, GstCaps * incaps,
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{
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GstGLFilter *filter;
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GstGLFilterClass *filter_class;
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guint in_width, in_height, out_width, out_height;
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filter = GST_GL_FILTER (bt);
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filter_class = GST_GL_FILTER_GET_CLASS (filter);
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@ -376,42 +708,21 @@ gst_gl_filter_set_caps (GstBaseTransform * bt, GstCaps * incaps,
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if (!gst_video_info_from_caps (&filter->out_info, outcaps))
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goto wrong_caps;
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in_width = GST_VIDEO_INFO_WIDTH (&filter->in_info);
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in_height = GST_VIDEO_INFO_HEIGHT (&filter->in_info);
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out_width = GST_VIDEO_INFO_WIDTH (&filter->out_info);
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out_height = GST_VIDEO_INFO_HEIGHT (&filter->out_info);
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//blocking call, generate a FBO
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if (!gst_gl_display_gen_fbo (filter->display,
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GST_VIDEO_INFO_WIDTH (&filter->out_info),
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GST_VIDEO_INFO_HEIGHT (&filter->out_info),
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if (!gst_gl_display_gen_fbo (filter->display, out_width, out_height,
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&filter->fbo, &filter->depthbuffer))
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goto display_error;
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gst_gl_display_gen_texture (filter->display, &filter->in_tex_id,
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GST_VIDEO_INFO_FORMAT (&filter->out_info),
|
||||
GST_VIDEO_INFO_WIDTH (&filter->out_info),
|
||||
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
|
||||
GST_VIDEO_FORMAT_RGBA, in_width, in_height);
|
||||
|
||||
gst_gl_display_gen_texture (filter->display, &filter->out_tex_id,
|
||||
GST_VIDEO_INFO_FORMAT (&filter->out_info),
|
||||
GST_VIDEO_INFO_WIDTH (&filter->out_info),
|
||||
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
|
||||
|
||||
filter->download = gst_gl_display_find_download (filter->display,
|
||||
GST_VIDEO_INFO_FORMAT (&filter->out_info),
|
||||
GST_VIDEO_INFO_WIDTH (&filter->out_info),
|
||||
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
|
||||
|
||||
gst_gl_download_init_format (filter->download,
|
||||
GST_VIDEO_INFO_FORMAT (&filter->out_info),
|
||||
GST_VIDEO_INFO_WIDTH (&filter->out_info),
|
||||
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
|
||||
|
||||
filter->upload = gst_gl_display_find_upload (filter->display,
|
||||
GST_VIDEO_INFO_FORMAT (&filter->out_info),
|
||||
GST_VIDEO_INFO_WIDTH (&filter->out_info),
|
||||
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
|
||||
|
||||
gst_gl_upload_init_format (filter->upload,
|
||||
GST_VIDEO_INFO_FORMAT (&filter->out_info),
|
||||
GST_VIDEO_INFO_WIDTH (&filter->out_info),
|
||||
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
|
||||
GST_VIDEO_FORMAT_RGBA, out_width, out_height);
|
||||
|
||||
if (filter_class->display_init_cb != NULL) {
|
||||
gst_gl_display_thread_add (filter->display, gst_gl_filter_start_gl, filter);
|
||||
|
|
@ -579,7 +890,7 @@ gst_gl_filter_filter_texture (GstGLFilter * filter, GstBuffer * inbuf,
|
|||
GstVideoFrame in_frame;
|
||||
GstVideoFrame out_frame;
|
||||
guint in_tex, out_tex;
|
||||
gboolean ret, out_gl_wrapped = FALSE;
|
||||
gboolean ret, in_gl_wrapped, out_gl_wrapped;
|
||||
|
||||
filter_class = GST_GL_FILTER_GET_CLASS (filter);
|
||||
|
||||
|
|
@ -593,29 +904,93 @@ gst_gl_filter_filter_texture (GstGLFilter * filter, GstBuffer * inbuf,
|
|||
return FALSE;
|
||||
}
|
||||
|
||||
if (gst_is_gl_memory (in_frame.map[0].memory)) {
|
||||
in_gl_wrapped = !gst_is_gl_memory (in_frame.map[0].memory);
|
||||
out_gl_wrapped = !gst_is_gl_memory (out_frame.map[0].memory);
|
||||
|
||||
if (!in_gl_wrapped && !out_gl_wrapped) { /* both GL */
|
||||
in_tex = *(guint *) in_frame.data[0];
|
||||
} else {
|
||||
out_tex = *(guint *) out_frame.data[0];
|
||||
} else if (in_gl_wrapped && !out_gl_wrapped) { /* input: non-GL, output: GL */
|
||||
GST_INFO ("Input Buffer does not contain correct meta, "
|
||||
"attempting to wrap for upload");
|
||||
|
||||
if (!filter->upload) {
|
||||
filter->upload = gst_gl_display_find_upload (filter->display,
|
||||
GST_VIDEO_FRAME_FORMAT (&in_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&in_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&in_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&out_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&out_frame));
|
||||
|
||||
gst_gl_upload_init_format (filter->upload,
|
||||
GST_VIDEO_FRAME_FORMAT (&in_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&in_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&in_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&out_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&out_frame));
|
||||
}
|
||||
|
||||
in_tex = filter->in_tex_id;
|
||||
out_tex = *(guint *) out_frame.data[0];
|
||||
} else if (!in_gl_wrapped && out_gl_wrapped) { /* input: GL, output: non-GL */
|
||||
GST_INFO ("Output Buffer does not contain correct memory, "
|
||||
"attempting to wrap for download");
|
||||
|
||||
if (!filter->download) {
|
||||
filter->download = gst_gl_display_find_download (filter->display,
|
||||
GST_VIDEO_FRAME_FORMAT (&out_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&out_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&out_frame));
|
||||
|
||||
gst_gl_download_init_format (filter->download,
|
||||
GST_VIDEO_FRAME_FORMAT (&out_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&out_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&out_frame));
|
||||
}
|
||||
|
||||
in_tex = *(guint *) in_frame.data[0];
|
||||
out_tex = filter->out_tex_id;
|
||||
} else { /* both non-GL */
|
||||
if (!filter->upload) {
|
||||
filter->upload = gst_gl_display_find_upload (filter->display,
|
||||
GST_VIDEO_FRAME_FORMAT (&in_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&in_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&in_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&out_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&out_frame));
|
||||
|
||||
gst_gl_upload_init_format (filter->upload,
|
||||
GST_VIDEO_FRAME_FORMAT (&in_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&in_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&in_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&out_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&out_frame));
|
||||
}
|
||||
|
||||
if (!filter->download) {
|
||||
filter->download = gst_gl_display_find_download (filter->display,
|
||||
GST_VIDEO_FRAME_FORMAT (&out_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&out_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&out_frame));
|
||||
|
||||
gst_gl_download_init_format (filter->download,
|
||||
GST_VIDEO_FRAME_FORMAT (&out_frame),
|
||||
GST_VIDEO_FRAME_WIDTH (&out_frame),
|
||||
GST_VIDEO_FRAME_HEIGHT (&out_frame));
|
||||
}
|
||||
|
||||
gst_gl_upload_perform_with_data (filter->upload, filter->in_tex_id,
|
||||
in_frame.data);
|
||||
|
||||
out_tex = filter->out_tex_id;
|
||||
in_tex = filter->in_tex_id;
|
||||
}
|
||||
|
||||
if (gst_is_gl_memory (out_frame.map[0].memory)) {
|
||||
out_tex = *(guint *) out_frame.data[0];
|
||||
} else {
|
||||
GST_INFO ("Output Buffer does not contain correct memory, "
|
||||
"attempting to wrap for download");
|
||||
|
||||
out_tex = filter->out_tex_id;;
|
||||
|
||||
out_gl_wrapped = TRUE;
|
||||
if (in_gl_wrapped) {
|
||||
gst_gl_upload_perform_with_data (filter->upload, in_tex, in_frame.data);
|
||||
}
|
||||
|
||||
g_assert (filter_class->filter_texture);
|
||||
ret = filter_class->filter_texture (filter, in_tex, out_tex);
|
||||
|
||||
if (out_gl_wrapped) {
|
||||
|
|
@ -650,19 +1025,43 @@ gst_gl_filter_transform (GstBaseTransform * bt, GstBuffer * inbuf,
|
|||
}
|
||||
|
||||
/* convenience functions to simplify filter development */
|
||||
/**
|
||||
* gst_gl_filter_render_to_target:
|
||||
* @filter: a #GstGLFilter
|
||||
* @resize: whether to automatically resize the texture between the input size
|
||||
* and the output size
|
||||
* @input: the input texture
|
||||
* @target: the output texture
|
||||
* @func: the function to transform @input into @output. called with @data
|
||||
* @data: the data associated with @func
|
||||
*
|
||||
* Transforms @input into @output using @func on through FBO. @resize should
|
||||
* only ever be %TRUE whenever @input is the input texture of @filter.
|
||||
*/
|
||||
void
|
||||
gst_gl_filter_render_to_target (GstGLFilter * filter,
|
||||
gst_gl_filter_render_to_target (GstGLFilter * filter, gboolean resize,
|
||||
GLuint input, GLuint target, GLCB func, gpointer data)
|
||||
{
|
||||
guint in_width, in_height, out_width, out_height;
|
||||
|
||||
out_width = GST_VIDEO_INFO_WIDTH (&filter->out_info);
|
||||
out_height = GST_VIDEO_INFO_HEIGHT (&filter->out_info);
|
||||
if (resize) {
|
||||
in_width = GST_VIDEO_INFO_WIDTH (&filter->in_info);
|
||||
in_height = GST_VIDEO_INFO_HEIGHT (&filter->in_info);
|
||||
} else {
|
||||
in_width = out_width;
|
||||
in_height = out_height;
|
||||
}
|
||||
|
||||
GST_LOG ("rendering to target. in:%ux%u out:%ux%u", in_width, in_height,
|
||||
out_width, out_height);
|
||||
|
||||
gst_gl_display_use_fbo (filter->display,
|
||||
GST_VIDEO_INFO_WIDTH (&filter->out_info),
|
||||
GST_VIDEO_INFO_HEIGHT (&filter->out_info),
|
||||
out_width, out_height,
|
||||
filter->fbo, filter->depthbuffer, target,
|
||||
func, GST_VIDEO_INFO_WIDTH (&filter->out_info),
|
||||
GST_VIDEO_INFO_HEIGHT (&filter->out_info), input, 0,
|
||||
GST_VIDEO_INFO_WIDTH (&filter->out_info), 0,
|
||||
GST_VIDEO_INFO_HEIGHT (&filter->out_info),
|
||||
GST_GL_DISPLAY_PROJECTION_ORTHO2D, data);
|
||||
func, in_width, in_height, input, 0,
|
||||
in_width, 0, in_height, GST_GL_DISPLAY_PROJECTION_ORTHO2D, data);
|
||||
}
|
||||
|
||||
#ifndef OPENGL_ES2
|
||||
|
|
@ -683,23 +1082,49 @@ _draw_with_shader_cb (gint width, gint height, guint texture, gpointer stuff)
|
|||
|
||||
gst_gl_shader_set_uniform_1i (filter->default_shader, "tex", 1);
|
||||
|
||||
gst_gl_filter_draw_texture (filter, texture);
|
||||
gst_gl_filter_draw_texture (filter, texture, width, height);
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_gl_filter_render_to_target_with_shader:
|
||||
* @filter: a #GstGLFilter
|
||||
* @resize: whether to automatically resize the texture between the input size
|
||||
* and the output size
|
||||
* @input: the input texture
|
||||
* @target: the output texture
|
||||
* @shader: the shader to use.
|
||||
*
|
||||
* Transforms @input into @output using @shader on through FBO. @resize should
|
||||
* only ever be %TRUE whenever @input is the input texture of @filter.
|
||||
*
|
||||
* See also: #gst_gl_filter_render_to_target()
|
||||
*/
|
||||
/* attach target to a FBO, use shader, pass input as "tex" uniform to
|
||||
* the shader, render input to a quad */
|
||||
void
|
||||
gst_gl_filter_render_to_target_with_shader (GstGLFilter * filter,
|
||||
GLuint input, GLuint target, GstGLShader * shader)
|
||||
gboolean resize, GLuint input, GLuint target, GstGLShader * shader)
|
||||
{
|
||||
filter->default_shader = shader;
|
||||
gst_gl_filter_render_to_target (filter, input, target, _draw_with_shader_cb,
|
||||
filter);
|
||||
gst_gl_filter_render_to_target (filter, resize, input, target,
|
||||
_draw_with_shader_cb, filter);
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_gl_filter_draw_texture:
|
||||
* @filter: a #GstGLFilter
|
||||
* @texture: the texture to draw
|
||||
* @width: width of @texture
|
||||
* @height: height of texture
|
||||
*
|
||||
* Draws @texture into the OpenGL scene at the specified @width and @height.
|
||||
*/
|
||||
void
|
||||
gst_gl_filter_draw_texture (GstGLFilter * filter, GLuint texture)
|
||||
gst_gl_filter_draw_texture (GstGLFilter * filter, GLuint texture,
|
||||
guint width, guint height)
|
||||
{
|
||||
GST_DEBUG ("drawing texture:%u dimensions:%ux%u", texture, width, height);
|
||||
|
||||
glActiveTexture (GL_TEXTURE0);
|
||||
glEnable (GL_TEXTURE_RECTANGLE_ARB);
|
||||
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
|
||||
|
|
@ -708,12 +1133,11 @@ gst_gl_filter_draw_texture (GstGLFilter * filter, GLuint texture)
|
|||
|
||||
glTexCoord2f (0.0, 0.0);
|
||||
glVertex2f (-1.0, -1.0);
|
||||
glTexCoord2f ((gfloat) GST_VIDEO_INFO_WIDTH (&filter->out_info), 0.0);
|
||||
glTexCoord2f ((gfloat) width, 0.0);
|
||||
glVertex2f (1.0, -1.0);
|
||||
glTexCoord2f ((gfloat) GST_VIDEO_INFO_WIDTH (&filter->out_info),
|
||||
(gfloat) GST_VIDEO_INFO_HEIGHT (&filter->out_info));
|
||||
glTexCoord2f ((gfloat) width, (gfloat) height);
|
||||
glVertex2f (1.0, 1.0);
|
||||
glTexCoord2f (0.0, (gfloat) GST_VIDEO_INFO_HEIGHT (&filter->out_info));
|
||||
glTexCoord2f (0.0, (gfloat) height);
|
||||
glVertex2f (-1.0, 1.0);
|
||||
|
||||
glEnd ();
|
||||
|
|
|
|||
|
|
@ -101,15 +101,15 @@ gboolean gst_gl_filter_filter_texture (GstGLFilter * filter, GstBuffer * inbuf,
|
|||
GstBuffer * outbuf);
|
||||
|
||||
void
|
||||
gst_gl_filter_render_to_target (GstGLFilter *filter,
|
||||
GLuint input, GLuint target,
|
||||
GLCB func, gpointer data);
|
||||
gst_gl_filter_render_to_target (GstGLFilter *filter, gboolean resize, GLuint input,
|
||||
GLuint target, GLCB func, gpointer data);
|
||||
|
||||
#ifndef OPENGL_ES2
|
||||
void
|
||||
gst_gl_filter_render_to_target_with_shader (GstGLFilter * filter,
|
||||
gst_gl_filter_render_to_target_with_shader (GstGLFilter * filter, gboolean resize,
|
||||
GLuint input, GLuint target, GstGLShader *shader);
|
||||
|
||||
void gst_gl_filter_draw_texture (GstGLFilter *filter, GLuint texture);
|
||||
void gst_gl_filter_draw_texture (GstGLFilter *filter, GLuint texture, guint width, guint height);
|
||||
#endif
|
||||
|
||||
G_END_DECLS
|
||||
|
|
|
|||
Loading…
Reference in a new issue