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2313cea524
Use stack allocated instead of static variables Conflicts: gst-libs/gst/gl/gstglutils.c
371 lines
10 KiB
C
371 lines
10 KiB
C
/*
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* GStreamer
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* Copyright (C) 2013 Matthew Waters <ystreet00@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <gst/gst.h>
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#include "gl.h"
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#include "gstglutils.h"
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#ifndef GL_FRAMEBUFFER_UNDEFINED
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#define GL_FRAMEBUFFER_UNDEFINED 0x8219
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#endif
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#ifndef GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
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#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6
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#endif
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#ifndef GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
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#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
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#endif
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#ifndef GL_FRAMEBUFFER_UNSUPPORTED
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#define GL_FRAMEBUFFER_UNSUPPORTED 0x8CDD
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#endif
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#ifndef GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS
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#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS 0x8CD9
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#endif
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#define USING_OPENGL(context) (gst_gl_context_get_gl_apie (context) & GST_GL_API_OPENGL)
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#define USING_OPENGL3(context) (gst_gl_context_get_gl_apie (context) & GST_GL_API_OPENGL3)
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#define USING_GLES(context) (gst_gl_context_get_gl_apie (context) & GST_GL_API_GLES)
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#define USING_GLES2(context) (gst_gl_context_get_gl_apie (context)->gl_api & GST_GL_API_GLES2)
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#define USING_GLES3(context) (gst_gl_context_get_gl_apie (context) & GST_GL_API_GLES3)
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static gchar *error_message;
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/* called in the gl thread */
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gboolean
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gst_gl_context_check_framebuffer_status (GstGLContext * context)
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{
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GLenum status = 0;
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status = context->gl_vtable->CheckFramebufferStatus (GL_FRAMEBUFFER);
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switch (status) {
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case GL_FRAMEBUFFER_COMPLETE:
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return TRUE;
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break;
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case GL_FRAMEBUFFER_UNSUPPORTED:
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GST_ERROR ("GL_FRAMEBUFFER_UNSUPPORTED");
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break;
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case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
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GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT");
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break;
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case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
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GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT");
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break;
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case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
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GST_ERROR ("GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS");
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break;
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#if GST_GL_HAVE_OPENGL
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case GL_FRAMEBUFFER_UNDEFINED:
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GST_ERROR ("GL_FRAMEBUFFER_UNDEFINED");
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break;
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#endif
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default:
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GST_ERROR ("General FBO error");
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}
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return FALSE;
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}
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typedef struct _GenTexture
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{
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guint width, height;
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GstVideoFormat format;
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guint result;
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} GenTexture;
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static void
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_gen_texture (GstGLContext * context, GenTexture * data)
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{
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const GstGLFuncs *gl = context->gl_vtable;
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GST_TRACE ("Generating texture format:%u dimensions:%ux%u", data->format,
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data->width, data->height);
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gl->GenTextures (1, &data->result);
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gl->BindTexture (GL_TEXTURE_RECTANGLE_ARB, data->result);
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gl->TexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, data->width,
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data->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
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gl->TexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
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GL_LINEAR);
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gl->TexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
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GL_LINEAR);
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gl->TexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
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GL_CLAMP_TO_EDGE);
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gl->TexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
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GL_CLAMP_TO_EDGE);
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GST_LOG ("generated texture id:%d", data->result);
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}
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void
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gst_gl_context_gen_texture (GstGLContext * context, GLuint * pTexture,
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GstVideoFormat v_format, GLint width, GLint height)
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{
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GenTexture data = { width, height, v_format, 0 };
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _gen_texture,
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&data);
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*pTexture = data.result;
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}
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void
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_del_texture (GstGLContext * context, guint * texture)
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{
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glDeleteTextures (1, texture);
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}
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void
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gst_gl_context_del_texture (GstGLContext * context, GLuint * pTexture)
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{
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _del_texture,
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pTexture);
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}
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typedef struct _GenFBO
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{
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GstGLFramebuffer *frame;
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gint width, height;
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GLuint *fbo, *depth;
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} GenFBO;
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static void
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_gen_fbo (GstGLContext * context, GenFBO * data)
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{
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gst_gl_framebuffer_generate (data->frame, data->width, data->height,
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data->fbo, data->depth);
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}
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gboolean
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gst_gl_context_gen_fbo (GstGLContext * context, gint width, gint height,
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GLuint * fbo, GLuint * depthbuffer)
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{
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GstGLFramebuffer *frame = gst_gl_framebuffer_new (context);
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GenFBO data = { frame, width, height, fbo, depthbuffer };
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _gen_fbo, &data);
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gst_object_unref (frame);
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return TRUE;
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}
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typedef struct _UseFBO
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{
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GstGLFramebuffer *frame;
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gint texture_fbo_width;
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gint texture_fbo_height;
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GLuint fbo;
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GLuint depth_buffer;
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GLuint texture_fbo;
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GLCB cb;
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gint input_tex_width;
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gint input_tex_height;
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GLuint input_tex;
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gdouble proj_param1;
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gdouble proj_param2;
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gdouble proj_param3;
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gdouble proj_param4;
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GstGLDisplayProjection projection;
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gpointer stuff;
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} UseFBO;
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static void
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_use_fbo (GstGLContext * context, UseFBO * data)
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{
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gst_gl_framebuffer_use (data->frame, data->texture_fbo_width,
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data->texture_fbo_height, data->fbo, data->depth_buffer,
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data->texture_fbo, data->cb, data->input_tex_width,
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data->input_tex_height, data->input_tex, data->proj_param1,
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data->proj_param2, data->proj_param3, data->proj_param4, data->projection,
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data->stuff);
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}
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/* Called by glfilter */
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/* this function really has to be simplified... do we really need to
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set projection this way? Wouldn't be better a set_projection
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separate call? or just make glut functions available out of
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gst-libs and call it if needed on drawcallback? -- Filippo */
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/* GLCB too.. I think that only needed parameters should be
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* GstGLDisplay *display and gpointer data, or just gpointer data */
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/* ..everything here has to be simplified! */
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gboolean
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gst_gl_context_use_fbo (GstGLContext * context, gint texture_fbo_width,
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gint texture_fbo_height, GLuint fbo, GLuint depth_buffer,
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GLuint texture_fbo, GLCB cb, gint input_tex_width,
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gint input_tex_height, GLuint input_tex, gdouble proj_param1,
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gdouble proj_param2, gdouble proj_param3, gdouble proj_param4,
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GstGLDisplayProjection projection, gpointer stuff)
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{
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GstGLFramebuffer *frame = gst_gl_framebuffer_new (context);
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UseFBO data =
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{ frame, texture_fbo_width, texture_fbo_height, fbo, depth_buffer,
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texture_fbo, cb, input_tex_width, input_tex_height, input_tex,
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proj_param1, proj_param2, proj_param3, proj_param4, projection, stuff
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};
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _use_fbo, &data);
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gst_object_unref (frame);
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return TRUE;
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}
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typedef struct _UseFBO2
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{
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GstGLFramebuffer *frame;
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gint texture_fbo_width;
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gint texture_fbo_height;
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GLuint fbo;
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GLuint depth_buffer;
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GLuint texture_fbo;
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GLCB_V2 cb;
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gpointer stuff;
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} UseFBO2;
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static void
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_use_fbo_v2 (GstGLContext * context, UseFBO2 * data)
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{
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gst_gl_framebuffer_use_v2 (data->frame, data->texture_fbo_width,
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data->texture_fbo_height, data->fbo, data->depth_buffer,
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data->texture_fbo, data->cb, data->stuff);
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}
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gboolean
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gst_gl_context_use_fbo_v2 (GstGLContext * context, gint texture_fbo_width,
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gint texture_fbo_height, GLuint fbo, GLuint depth_buffer,
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GLuint texture_fbo, GLCB_V2 cb, gpointer stuff)
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{
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GstGLFramebuffer *frame = gst_gl_framebuffer_new (context);
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UseFBO2 data =
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{ frame, texture_fbo_width, texture_fbo_height, fbo, depth_buffer,
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texture_fbo, cb, stuff
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};
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _use_fbo_v2,
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&data);
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gst_object_unref (frame);
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return TRUE;
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}
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typedef struct _DelFBO
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{
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GstGLFramebuffer *frame;
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GLuint fbo;
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GLuint depth;
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} DelFBO;
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/* Called in the gl thread */
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static void
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_del_fbo (GstGLContext * context, DelFBO * data)
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{
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gst_gl_framebuffer_delete (data->frame, data->fbo, data->depth);
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}
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/* Called by gltestsrc and glfilter */
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void
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gst_gl_context_del_fbo (GstGLContext * context, GLuint fbo, GLuint depth_buffer)
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{
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GstGLFramebuffer *frame = gst_gl_framebuffer_new (context);
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DelFBO data = { frame, fbo, depth_buffer };
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _del_fbo, &data);
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gst_object_unref (frame);
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}
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static void
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_compile_shader (GstGLContext * context, GstGLShader ** shader)
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{
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GError *error = NULL;
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gst_gl_shader_compile (*shader, &error);
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if (error) {
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gst_gl_context_set_error (context, "%s", error->message);
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g_error_free (error);
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error = NULL;
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gst_gl_context_clear_shader (context);
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gst_object_unref (*shader);
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*shader = NULL;
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}
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}
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/* Called by glfilter */
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gboolean
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gst_gl_context_gen_shader (GstGLContext * context, const gchar * vert_src,
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const gchar * frag_src, GstGLShader ** shader)
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{
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g_return_val_if_fail (frag_src != NULL || vert_src != NULL, FALSE);
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g_return_val_if_fail (shader != NULL, FALSE);
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*shader = gst_gl_shader_new (context);
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if (frag_src)
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gst_gl_shader_set_fragment_source (*shader, frag_src);
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if (vert_src)
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gst_gl_shader_set_vertex_source (*shader, vert_src);
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gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _compile_shader,
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shader);
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return *shader != NULL;
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}
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void
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gst_gl_context_set_error (GstGLContext * context, const char *format, ...)
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{
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va_list args;
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if (error_message)
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g_free (error_message);
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va_start (args, format);
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error_message = g_strdup_vprintf (format, args);
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va_end (args);
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GST_WARNING ("%s", error_message);
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}
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gchar *
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gst_gl_context_get_error (void)
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{
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return error_message;
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}
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/* Called by glfilter */
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void
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gst_gl_context_del_shader (GstGLContext * context, GstGLShader * shader)
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{
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gst_object_unref (shader);
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}
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