mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-23 16:50:47 +00:00
glviewconvert: add support rectangle/external-oes textures
https://bugzilla.gnome.org/show_bug.cgi?id=757285
This commit is contained in:
Matthew Waters
Tim-Philipp Müller
parent
15d9267ed5
commit
975e96db44
2 changed files with 253 additions and 28 deletions
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@ -31,6 +31,7 @@
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#endif
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#include "gstglviewconvert.h"
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#include <gst/video/gstvideoaffinetransformationmeta.h>
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#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
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#define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
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@ -43,7 +44,8 @@ GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), "
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"format = (string) RGBA, "
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"width = " GST_VIDEO_SIZE_RANGE ", "
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"height = " GST_VIDEO_SIZE_RANGE ", "
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"framerate = " GST_VIDEO_FPS_RANGE ", " "texture-target = (string) 2D ");
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"framerate = " GST_VIDEO_FPS_RANGE ", "
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"texture-target = (string) { 2D, rectangle, external-oes } ");
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#define GST_CAT_DEFAULT gst_gl_view_convert_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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@ -143,6 +145,13 @@ static GLfloat downmix_matrices[][2][9] = {
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}
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};
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static gfloat identity_matrix[] = {
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1.0f, 0.0f, 0.0f, 0.0f,
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0.0f, 1.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f,
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};
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/* *INDENT-OFF* */
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static const gchar *fragment_source =
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"#ifdef GL_ES\n"
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@ -227,16 +236,6 @@ static const gchar *frag_output_checkerboard =
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static const gchar *frag_output_separated =
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"gl_FragData[0] = l;\n"
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"gl_FragData[1] = r;\n";
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static const gchar text_vertex_shader[] =
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"attribute vec4 a_position; \n"
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"attribute vec2 a_texcoord; \n"
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"varying vec2 v_texcoord; \n"
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"void main() \n"
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"{ \n"
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" gl_Position = a_position; \n"
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" v_texcoord = a_texcoord; \n"
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"} \n";
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/* *INDENT-ON* */
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static const GLfloat vertices[] = {
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@ -1006,12 +1005,11 @@ _intersect_with_mview_modes (GstCaps * caps, const GValue * modes)
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return result;
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}
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GstCaps *
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gst_gl_view_convert_transform_caps (GstGLViewConvert * viewconvert,
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GstPadDirection direction, GstCaps * caps, GstCaps * filter)
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{
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gint i;
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gint i, n;
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GstCaps *base_caps = gst_static_caps_get (&caps_template);
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GstCaps *out_caps, *tmp_caps;
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@ -1086,10 +1084,104 @@ gst_gl_view_convert_transform_caps (GstGLViewConvert * viewconvert,
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out:
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gst_caps_unref (caps);
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n = gst_caps_get_size (out_caps);
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for (i = 0; i < n; i++) {
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GstStructure *s = gst_caps_get_structure (out_caps, i);
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gst_structure_remove_fields (s, "texture-target", NULL);
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}
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GST_DEBUG_OBJECT (viewconvert, "Returning caps %" GST_PTR_FORMAT, out_caps);
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return out_caps;
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}
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static guint
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_get_target_bitmask_from_g_value (const GValue * targets)
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{
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guint new_targets = 0;
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if (targets == NULL) {
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new_targets = 1 << GST_GL_TEXTURE_TARGET_2D;
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} else if (G_TYPE_CHECK_VALUE_TYPE (targets, G_TYPE_STRING)) {
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GstGLTextureTarget target;
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const gchar *str;
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str = g_value_get_string (targets);
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target = gst_gl_texture_target_from_string (str);
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if (target)
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new_targets |= 1 << target;
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} else if (G_TYPE_CHECK_VALUE_TYPE (targets, GST_TYPE_LIST)) {
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gint j, m;
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m = gst_value_list_get_size (targets);
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for (j = 0; j < m; j++) {
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const GValue *val = gst_value_list_get_value (targets, j);
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GstGLTextureTarget target;
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const gchar *str;
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str = g_value_get_string (val);
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target = gst_gl_texture_target_from_string (str);
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if (target)
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new_targets |= 1 << target;
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}
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}
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return new_targets;
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}
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static GstCaps *
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_fixate_texture_target (GstGLViewConvert * viewconvert,
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GstPadDirection direction, GstCaps * caps, GstCaps * other)
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{
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GValue item = G_VALUE_INIT;
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const GValue *targets, *other_targets;
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guint targets_mask = 0, other_targets_mask = 0, result_mask;
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GstStructure *s, *s_other;
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other = gst_caps_make_writable (other);
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s = gst_caps_get_structure (caps, 0);
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s_other = gst_caps_get_structure (other, 0);
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other_targets = gst_structure_get_value (s_other, "texture-target");
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targets = gst_structure_get_value (s, "texture-target");
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targets_mask = _get_target_bitmask_from_g_value (targets);
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other_targets_mask = _get_target_bitmask_from_g_value (other_targets);
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result_mask = targets_mask & other_targets_mask;
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if (result_mask == 0) {
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/* nothing we can do here */
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return gst_caps_fixate (other);
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}
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if (direction == GST_PAD_SINK) {
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result_mask &=
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(1 << GST_GL_TEXTURE_TARGET_2D | 1 << GST_GL_TEXTURE_TARGET_RECTANGLE);
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} else {
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/* if the src caps has 2D support we can 'convert' to anything */
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if (targets_mask & (1 << GST_GL_TEXTURE_TARGET_2D))
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result_mask = -1;
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else
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result_mask = other_targets_mask;
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}
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g_value_init (&item, G_TYPE_STRING);
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if (result_mask & (1 << GST_GL_TEXTURE_TARGET_2D)) {
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g_value_set_static_string (&item, GST_GL_TEXTURE_TARGET_2D_STR);
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} else if (result_mask & (1 << GST_GL_TEXTURE_TARGET_RECTANGLE)) {
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g_value_set_static_string (&item, GST_GL_TEXTURE_TARGET_RECTANGLE_STR);
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} else if (result_mask & (1 << GST_GL_TEXTURE_TARGET_EXTERNAL_OES)) {
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g_value_set_static_string (&item, GST_GL_TEXTURE_TARGET_EXTERNAL_OES_STR);
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}
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gst_structure_set_value (s, "texture-target", &item);
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g_value_unset (&item);
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return gst_caps_fixate (other);
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}
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GstCaps *
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gst_gl_view_convert_fixate_caps (GstGLViewConvert * viewconvert,
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GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
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@ -1161,6 +1253,10 @@ gst_gl_view_convert_fixate_caps (GstGLViewConvert * viewconvert,
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}
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}
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tmp = _fixate_texture_target (viewconvert, direction, caps, othercaps);
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gst_caps_unref (othercaps);
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othercaps = tmp;
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done:
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GST_DEBUG_OBJECT (viewconvert, "dir %s fixated to %" GST_PTR_FORMAT
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" against caps %" GST_PTR_FORMAT,
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@ -1258,6 +1354,7 @@ _init_view_convert_fbo (GstGLViewConvert * viewconvert)
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guint out_width, out_height;
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GLuint fake_texture = 0; /* a FBO must hava texture to init */
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GLenum internal_format;
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gboolean ret = TRUE;
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gl = viewconvert->context->gl_vtable;
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out_width = GST_VIDEO_INFO_WIDTH (&viewconvert->out_info);
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@ -1313,14 +1410,111 @@ _init_view_convert_fbo (GstGLViewConvert * viewconvert)
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if (!gst_gl_context_check_framebuffer_status (viewconvert->context)) {
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gst_gl_context_set_error (viewconvert->context,
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"GL framebuffer status incomplete");
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gl->DeleteTextures (1, &fake_texture);
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return FALSE;
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ret = FALSE;
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}
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/* unbind the FBO */
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gl->BindTexture (GL_TEXTURE_2D, 0);
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gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
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gl->DeleteTextures (1, &fake_texture);
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return TRUE;
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return ret;
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}
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static gchar *
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_mangle_texture_access (const gchar * str, GstGLTextureTarget from,
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GstGLTextureTarget to)
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{
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const gchar *from_str = NULL, *to_str = NULL;
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gchar *ret, *tmp;
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gchar *regex_find;
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GRegex *regex;
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if (from == GST_GL_TEXTURE_TARGET_2D)
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from_str = "texture2D";
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if (from == GST_GL_TEXTURE_TARGET_RECTANGLE)
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from_str = "texture2DRect";
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if (from == GST_GL_TEXTURE_TARGET_EXTERNAL_OES)
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from_str = "texture2D";
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if (to == GST_GL_TEXTURE_TARGET_2D)
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to_str = "texture2D";
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if (to == GST_GL_TEXTURE_TARGET_RECTANGLE)
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to_str = "texture2DRect";
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if (to == GST_GL_TEXTURE_TARGET_EXTERNAL_OES)
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to_str = "texture2D";
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/* followed by any amount of whitespace then a bracket */
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regex_find = g_strdup_printf ("%s(?=\\s*\\()", from_str);
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regex = g_regex_new (regex_find, 0, 0, NULL);
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tmp = g_regex_replace_literal (regex, str, -1, 0, to_str, 0, NULL);
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g_free (regex_find);
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g_regex_unref (regex);
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if (tmp) {
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ret = tmp;
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} else {
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GST_FIXME ("Couldn't mangle texture access successfully from %s to %s",
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from_str, to_str);
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ret = g_strdup (str);
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}
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return ret;
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}
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static gchar *
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_mangle_sampler_type (const gchar * str, GstGLTextureTarget from,
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GstGLTextureTarget to)
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{
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const gchar *from_str = NULL, *to_str = NULL;
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gchar *ret, *tmp;
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gchar *regex_find;
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GRegex *regex;
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if (from == GST_GL_TEXTURE_TARGET_2D)
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from_str = "sampler2D";
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if (from == GST_GL_TEXTURE_TARGET_RECTANGLE)
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from_str = "sampler2DRect";
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if (from == GST_GL_TEXTURE_TARGET_EXTERNAL_OES)
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from_str = "samplerExternalOES";
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if (to == GST_GL_TEXTURE_TARGET_2D)
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to_str = "sampler2D";
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if (to == GST_GL_TEXTURE_TARGET_RECTANGLE)
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to_str = "sampler2DRect";
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if (to == GST_GL_TEXTURE_TARGET_EXTERNAL_OES)
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to_str = "samplerExternalOES";
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/* followed by some whitespace */
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regex_find = g_strdup_printf ("%s(?=\\s)", from_str);
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regex = g_regex_new (regex_find, 0, 0, NULL);
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tmp = g_regex_replace_literal (regex, str, -1, 0, to_str, 0, NULL);
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g_free (regex_find);
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g_regex_unref (regex);
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if (tmp) {
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ret = tmp;
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} else {
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GST_FIXME ("Couldn't mangle sampler type successfully from %s to %s",
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from_str, to_str);
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ret = g_strdup (str);
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}
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return ret;
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}
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static gchar *
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_mangle_extensions (const gchar * str, GstGLTextureTarget from)
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{
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gchar *ext_str = NULL;
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if (from == GST_GL_TEXTURE_TARGET_EXTERNAL_OES)
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ext_str = "#extension GL_OES_EGL_image_external : require\n";
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if (ext_str) {
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return g_strdup_printf ("%s%s", ext_str, str);
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} else {
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return g_strdup (str);
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}
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}
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/* free after use */
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@ -1330,6 +1524,8 @@ _get_shader_string (GstGLViewConvert * viewconvert,
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{
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const gchar *input_str, *output_str;
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gboolean mono_input = FALSE;
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gchar *tmp, *tmp2;
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switch (in_mode) {
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case GST_VIDEO_MULTIVIEW_MODE_NONE:
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case GST_VIDEO_MULTIVIEW_MODE_MONO:
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@ -1380,7 +1576,17 @@ _get_shader_string (GstGLViewConvert * viewconvert,
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break;
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}
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return g_strdup_printf (fragment_source, input_str, output_str);
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tmp = g_strdup_printf (fragment_source, input_str, output_str);
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tmp2 = _mangle_sampler_type (tmp, GST_GL_TEXTURE_TARGET_2D,
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viewconvert->from_texture_target);
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g_free (tmp);
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tmp = _mangle_texture_access (tmp2, GST_GL_TEXTURE_TARGET_2D,
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viewconvert->from_texture_target);
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g_free (tmp2);
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tmp2 = _mangle_extensions (tmp, viewconvert->from_texture_target);
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g_free (tmp);
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return tmp2;
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}
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static void
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@ -1531,8 +1737,9 @@ _init_view_convert (GstGLViewConvert * viewconvert)
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offsets[0][0], offsets[0][1], offsets[1][0], offsets[1][1]);
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fragment_source_str = _get_shader_string (viewconvert, in_mode, out_mode);
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// g_print ("%s\n", fragment_source_str);
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res = gst_gl_context_gen_shader (viewconvert->context, text_vertex_shader,
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fragment_source_str, &viewconvert->shader);
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res = gst_gl_context_gen_shader (viewconvert->context,
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gst_gl_shader_string_vertex_mat4_texture_transform, fragment_source_str,
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&viewconvert->shader);
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g_free (fragment_source_str);
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if (!res)
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goto error;
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@ -1550,6 +1757,8 @@ _init_view_convert (GstGLViewConvert * viewconvert)
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GST_VIDEO_INFO_HEIGHT (&viewconvert->out_info));
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gst_gl_shader_set_uniform_matrix_3fv (viewconvert->shader, "downmix",
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2, FALSE, &downmix_matrices[viewconvert->downmix_mode][0][0]);
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gst_gl_shader_set_uniform_matrix_4fv (viewconvert->shader, "u_transformation",
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1, FALSE, identity_matrix);
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if (in_mode == GST_VIDEO_MULTIVIEW_MODE_SEPARATED ||
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in_mode == GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME) {
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gst_gl_shader_set_uniform_1i (viewconvert->shader, "tex_l", l_index);
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@ -1607,6 +1816,9 @@ _do_view_convert_draw (GstGLContext * context, GstGLViewConvert * viewconvert)
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};
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GstVideoMultiviewMode in_mode = priv->input_mode;
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GstVideoMultiviewMode out_mode = priv->output_mode;
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guint from_gl_target =
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gst_gl_texture_target_to_gl (viewconvert->from_texture_target);
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GstVideoAffineTransformationMeta *af_meta;
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gl = context->gl_vtable;
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out_width = GST_VIDEO_INFO_WIDTH (&viewconvert->out_info);
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@ -1618,12 +1830,22 @@ _do_view_convert_draw (GstGLContext * context, GstGLViewConvert * viewconvert)
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} else {
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out_views = 1;
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}
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/* FIXME: the auxillary buffer could have a different transform matrix */
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af_meta = gst_buffer_get_video_affine_transformation_meta (priv->primary_in);
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if (af_meta)
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gst_gl_shader_set_uniform_matrix_4fv (viewconvert->shader,
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"u_transformation", 1, FALSE, af_meta->matrix);
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/* attach the texture to the FBO to renderer to */
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for (i = 0; i < out_views; i++) {
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guint gl_target =
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gst_gl_texture_target_to_gl (viewconvert->to_texture_target);
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/* needed? */
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gl->BindTexture (GL_TEXTURE_2D, priv->out_tex[i]->tex_id);
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gl->BindTexture (gl_target, priv->out_tex[i]->tex_id);
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gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i,
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GL_TEXTURE_2D, priv->out_tex[i]->tex_id, 0);
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gl_target, priv->out_tex[i]->tex_id, 0);
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}
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if (gl->DrawBuffers)
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@ -1645,11 +1867,11 @@ _do_view_convert_draw (GstGLContext * context, GstGLViewConvert * viewconvert)
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return FALSE;
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}
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gl->ActiveTexture (GL_TEXTURE1);
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gl->BindTexture (GL_TEXTURE_2D, priv->in_tex[1]->tex_id);
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gl->BindTexture (from_gl_target, priv->in_tex[1]->tex_id);
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}
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gl->ActiveTexture (GL_TEXTURE0);
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gl->BindTexture (GL_TEXTURE_2D, priv->in_tex[0]->tex_id);
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gl->BindTexture (from_gl_target, priv->in_tex[0]->tex_id);
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gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, NULL);
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if (gl->BindVertexArray)
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gl->BindVertexArray (0);
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@ -1671,7 +1893,7 @@ _gen_buffer (GstGLViewConvert * viewconvert, GstBuffer ** target)
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{
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*target = gst_buffer_new ();
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if (!gst_gl_memory_setup_buffer (viewconvert->context,
|
||||
GST_GL_TEXTURE_TARGET_2D, NULL, &viewconvert->out_info, NULL,
|
||||
viewconvert->to_texture_target, NULL, &viewconvert->out_info, NULL,
|
||||
*target)) {
|
||||
return FALSE;
|
||||
}
|
||||
|
|
@ -1796,7 +2018,7 @@ _do_view_convert (GstGLContext * context, GstGLViewConvert * viewconvert)
|
|||
if (!priv->out_tex[j])
|
||||
priv->out_tex[j] =
|
||||
(GstGLMemory *) gst_gl_memory_alloc (context,
|
||||
GST_GL_TEXTURE_TARGET_2D, NULL, &temp_info, 0, NULL);
|
||||
viewconvert->to_texture_target, NULL, &temp_info, 0, NULL);
|
||||
} else {
|
||||
priv->out_tex[j] = out_tex;
|
||||
}
|
||||
|
|
@ -1848,9 +2070,9 @@ out:
|
|||
continue;
|
||||
}
|
||||
gst_gl_memory_copy_into_texture (priv->out_tex[j],
|
||||
out_tex->tex_id, GST_GL_TEXTURE_TARGET_2D, out_tex->tex_type, width,
|
||||
height, GST_VIDEO_INFO_PLANE_STRIDE (&out_tex->info, out_tex->plane),
|
||||
FALSE);
|
||||
out_tex->tex_id, viewconvert->to_texture_target, out_tex->tex_type,
|
||||
width, height,
|
||||
GST_VIDEO_INFO_PLANE_STRIDE (&out_tex->info, out_tex->plane), FALSE);
|
||||
gst_memory_unmap ((GstMemory *) out_tex, &to_info);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -61,6 +61,9 @@ struct _GstGLViewConvert
|
|||
GstVideoInfo in_info;
|
||||
GstVideoInfo out_info;
|
||||
|
||||
GstGLTextureTarget from_texture_target;
|
||||
GstGLTextureTarget to_texture_target;
|
||||
|
||||
gboolean initted;
|
||||
gboolean reconfigure;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue