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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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405 lines
11 KiB
C
405 lines
11 KiB
C
#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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/* gcc -ansi -pedantic on GNU/Linux causes warnings and errors
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* unless this is defined:
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* warning: #warning "Files using this header must be compiled with _SVID_SOURCE or _XOPEN_SOURCE"
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*/
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#ifndef _XOPEN_SOURCE
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# define _XOPEN_SOURCE 1
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#define GL_GLEXT_PROTOTYPES
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// VERY dangerous:
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#define GL_WRITE_PIXEL_DATA_RANGE_NV 0x8878
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <GL/glx.h>
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#include <GL/gl.h>
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#include <GL/glext.h>
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#include <GL/glu.h>
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#include <string.h>
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#include "gstglsink.h"
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typedef struct _GstGLImageConnection GstGLImageConnection;
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struct _GstGLImageConnection
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{
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GstImageConnection conn;
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Display *dpy;
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gint w, h;
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gint bpp;
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int ytex_id;
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int uvtex_id;
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int septex_id;
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unsigned char *m_memory;
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int m_bufslots[4];
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};
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#define TEX_XSIZE 1024
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#define TEX_YSIZE 1024
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#define YUVTEX_SIZE ((TEX_XSIZE * TEX_YSIZE) * 3 /2)
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#define AGP_BUFSLOTS 4
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typedef struct _GstNvImage GstNvImage;
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struct _GstNvImage
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{
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GstImageData data;
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int slot; // < AGP_BUFSLOTS: allocated from AGP mem, otherwise from CPU mem
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GstGLImageConnection *conn;
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};
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static GstGLImageInfo *gst_gl_nvimage_info (GstImageInfo * info);
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static GstGLImageConnection *gst_gl_nvimage_connection (GstImageConnection *
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conn);
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static gboolean gst_gl_nvimage_check_xvideo ();
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static GstCaps *gst_gl_nvimage_get_caps (GstImageInfo * info);
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static GstImageConnection *gst_gl_nvimage_set_caps (GstImageInfo * info,
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GstCaps * caps);
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static GstImageData *gst_gl_nvimage_get_image (GstImageInfo * info,
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GstImageConnection * conn);
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static void gst_gl_nvimage_put_image (GstImageInfo * info,
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GstImageData * image);
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static void gst_gl_nvimage_free_image (GstImageData * image);
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static void gst_gl_nvimage_open_conn (GstImageConnection * conn,
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GstImageInfo * info);
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static void gst_gl_nvimage_close_conn (GstImageConnection * conn,
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GstImageInfo * info);
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static void gst_gl_nvimage_free_conn (GstImageConnection * conn);
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GstImagePlugin *
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get_gl_nvimage_plugin (void)
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{
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static GstImagePlugin plugin = { gst_gl_nvimage_get_caps,
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gst_gl_nvimage_set_caps,
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gst_gl_nvimage_get_image,
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gst_gl_nvimage_put_image,
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gst_gl_nvimage_free_image
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};
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return &plugin;
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}
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static GstGLImageInfo *
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gst_gl_nvimage_info (GstImageInfo * info)
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{
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if (info == NULL || info->id != GST_MAKE_FOURCC ('X', 'l', 'i', 'b')) {
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return NULL;
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}
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return (GstGLImageInfo *) info;
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}
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static GstGLImageConnection *
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gst_gl_nvimage_connection (GstImageConnection * conn)
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{
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if (conn == NULL || conn->free_conn != gst_gl_nvimage_free_conn)
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return NULL;
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return (GstGLImageConnection *) conn;
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}
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gboolean
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gst_gl_nvimage_check_xvideo ()
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{
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int ver, rel, req, ev, err;
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#if 0
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if (display == NULL)
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return FALSE;
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if (Success == XvQueryExtension (display, &ver, &rel, &req, &ev, &err))
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return TRUE;
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#endif
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return FALSE;
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}
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static GstCaps *
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gst_gl_nvimage_get_caps (GstImageInfo * info)
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{
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gint i;
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int adaptors;
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int formats;
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GstCaps *caps = NULL;
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GstGLImageInfo *xinfo = gst_gl_nvimage_info (info);
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/* we don't handle these image information */
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if (xinfo == NULL)
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return NULL;
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if (gst_gl_nvimage_check_xvideo () == FALSE) {
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g_warning ("GL_NVImage: Server has no NVidia extension support\n");
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return NULL;
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}
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caps = gst_caps_append (caps, GST_CAPS_NEW ("xvimage_caps",
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"video/raw",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('Y', 'C', '1', '2')),
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"width", GST_PROPS_INT_RANGE (0, 1024),
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"height", GST_PROPS_INT_RANGE (0, 1024))
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);
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return caps;
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}
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static GstImageConnection *
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gst_gl_nvimage_set_caps (GstImageInfo * info, GstCaps * caps)
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{
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gint i, j = 0;
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int adaptors;
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int formats;
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GstGLImageConnection *conn;
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GstGLImageInfo *xinfo = gst_gl_nvimage_info (info);
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guint32 format;
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/* we don't handle these image information */
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if (xinfo == NULL)
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return NULL;
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conn = g_new0 (GstGLImageConnection, 1);
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conn->conn.open_conn = gst_gl_nvimage_open_conn;
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conn->conn.close_conn = gst_gl_nvimage_close_conn;
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conn->conn.free_conn = gst_gl_nvimage_free_conn;
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gst_caps_get (caps,
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"width", &conn->w, "height", &conn->h, "format", &format, NULL);
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// maybe I should a bit more checking here, e.g. maximum size smaller than maximum texture extents
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if (format != GST_MAKE_FOURCC ('R', 'G', 'B', ' ')) {
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GST_DEBUG (GST_CAT_PLUGIN_INFO, "GL_NVImage: Format is invalid !\n");
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return NULL;
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}
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if (0) //conn->port == (XvPortID) -1)
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{
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/* this happens if the plugin can't handle the caps, so no warning */
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g_free (conn);
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return NULL;
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}
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GST_DEBUG (GST_CAT_PLUGIN_INFO, "GL_NVImage: caps %p are ok, creating image",
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caps);
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return (GstImageConnection *) conn;
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}
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static GstImageData *
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gst_gl_nvimage_get_image (GstImageInfo * info, GstImageConnection * conn)
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{
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GstNvImage *image;
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GstGLImageInfo *xinfo = gst_gl_nvimage_info (info);
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GstGLImageConnection *nvconn = gst_gl_nvimage_connection (conn);
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int slot = 0;
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/* checks */
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if (xinfo == NULL)
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return NULL;
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if (nvconn == NULL)
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return NULL;
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// I should also check the current GLX context !
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// Ah, Don't have to, I am guarantueed to always be in the same thread
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image = g_new0 (GstNvImage, 1);
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for (slot = 0; slot < AGP_BUFSLOTS; slot++) {
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if (!nvconn->m_bufslots[slot])
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break;
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}
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image->data.size = nvconn->w * nvconn->h * 3 / 2;
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if (slot < AGP_BUFSLOTS) // found an AGP buffer slot
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{
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image->data.data = nvconn->m_memory + slot * YUVTEX_SIZE;
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image->slot = slot; // store for freeing
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nvconn->m_bufslots[slot] = 1; // it is now taken
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} else {
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g_warning ("Allocating from main memory !");
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image->data.data = g_malloc (image->data.size);
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image->slot = AGP_BUFSLOTS; // no AGP slot
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}
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image->conn = nvconn;
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if (image->data.data == NULL) {
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g_warning ("GL_NvImage: data allocation failed!");
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g_free (image);
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return NULL;
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}
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return (GstImageData *) image;
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}
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static void
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gst_gl_nvimage_put_image (GstImageInfo * info, GstImageData * image)
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{
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GstNvImage *im = (GstNvImage *) image;
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GstGLImageInfo *xinfo = gst_gl_nvimage_info (info);
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/* checks omitted for speed (and lazyness), do we need them? */
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g_assert (xinfo != NULL);
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/* Upload the texture here */
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g_warning ("PUTTING IMAGE - BROOOKEN");
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// both upload the video, and redraw the screen
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glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glEnable (GL_TEXTURE_2D);
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glPushMatrix ();
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//glTranslatef(0,1,0);
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glRotatef (xinfo->rotX - 250, 1, 0, 0);
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glRotatef (xinfo->rotY, 0, 1, 0);
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int zoom = xinfo->zoom;
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glScaled (zoom, zoom, zoom);
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//Draws the surface rectangle
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glBindTexture (GL_TEXTURE_2D, im->conn->ytex_id);
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glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, im->conn->w, im->conn->h, GL_RGBA,
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GL_UNSIGNED_BYTE, im->data.data);
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float xmax = (float) im->conn->w / TEX_XSIZE;
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float ymax = (float) im->conn->h / TEX_YSIZE;
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glColor4f (1, 1, 1, 1);
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glBegin (GL_QUADS);
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glNormal3f (0, -1, 0);
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glTexCoord2f (xmax, 0);
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glVertex3f (4, 0, -4);
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glTexCoord2f (0, 0);
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glVertex3f (-4, 0, -4);
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glTexCoord2f (0, ymax);
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glVertex3f (-4, 0, 4);
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glTexCoord2f (xmax, ymax);
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glVertex3f (4, 0, 4);
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glEnd ();
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glPopMatrix ();
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glXSwapBuffers (xinfo->dpy, xinfo->win);
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}
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static void
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gst_gl_nvimage_free_image (GstImageData * image)
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{
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GstNvImage *im = (GstNvImage *) image;
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g_return_if_fail (im != NULL);
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GstGLImageConnection *nvconn = im->conn;
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if (im->slot < AGP_BUFSLOTS) {
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nvconn->m_bufslots[im->slot] = 0;
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} else
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g_free (im->data.data);
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g_free (im);
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}
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static void
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gst_gl_nvimage_open_conn (GstImageConnection * conn, GstImageInfo * info)
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{
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GstGLImageInfo *xinfo = gst_gl_nvimage_info (info);
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GstGLImageConnection *xconn = gst_gl_nvimage_connection (conn);
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unsigned char data_sep[2][2] = { {0, 255}, {0, 255} };
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int slot;
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g_warning ("Opening NVidia Connection");
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xconn->m_memory =
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(unsigned char *) glXAllocateMemoryNV (AGP_BUFSLOTS * YUVTEX_SIZE, 0, 1.0,
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1.0);
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if (!xconn->m_memory) {
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printf
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("Unable to acquire graphics card mem... will acquire in normal memory.\n");
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for (slot = 0; slot < AGP_BUFSLOTS; slot++)
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xconn->m_bufslots[slot] = 1;
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} else {
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// maybe this fast writable memory, awfully slow to read from, though
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glPixelDataRangeNV (GL_WRITE_PIXEL_DATA_RANGE_NV,
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AGP_BUFSLOTS * YUVTEX_SIZE, xconn->m_memory);
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glEnableClientState (GL_WRITE_PIXEL_DATA_RANGE_NV);
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for (slot = 0; slot < AGP_BUFSLOTS; slot++)
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xconn->m_bufslots[slot] = 0;
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}
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glGenTextures (1, &xconn->ytex_id);
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glBindTexture (GL_TEXTURE_2D, xconn->ytex_id);
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glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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glTexImage2D (GL_TEXTURE_2D, 0, GL_LUMINANCE8_ALPHA8, TEX_XSIZE, TEX_YSIZE, 0,
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GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, NULL);
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glActiveTextureARB (GL_TEXTURE1_ARB);
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glGenTextures (1, &xconn->uvtex_id);
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glBindTexture (GL_TEXTURE_2D, xconn->uvtex_id);
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glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
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glTexImage2D (GL_TEXTURE_2D, 0, GL_LUMINANCE8_ALPHA8, TEX_XSIZE / 2,
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TEX_YSIZE / 2, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, NULL);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
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glActiveTextureARB (GL_TEXTURE2_ARB);
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glGenTextures (1, &xconn->septex_id);
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glBindTexture (GL_TEXTURE_2D, xconn->septex_id);
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glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
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glTexImage2D (GL_TEXTURE_2D, 0, GL_LUMINANCE8, 2, 2, 0, GL_LUMINANCE,
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GL_UNSIGNED_BYTE, data_sep);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
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glFlushPixelDataRangeNV (GL_WRITE_PIXEL_DATA_RANGE_NV);
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//glEnable(GL_TEXTURE_2D);
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glActiveTextureARB (GL_TEXTURE0_ARB);
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glEnable (GL_TEXTURE_2D);
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glActiveTextureARB (GL_TEXTURE1_ARB);
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glEnable (GL_TEXTURE_2D);
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glActiveTextureARB (GL_TEXTURE2_ARB);
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glEnable (GL_TEXTURE_2D);
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glActiveTextureARB (GL_TEXTURE0_ARB);
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}
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static void
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gst_gl_nvimage_close_conn (GstImageConnection * conn, GstImageInfo * info)
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{
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GstGLImageConnection *xconn = gst_gl_nvimage_connection (conn);
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GstGLImageInfo *xinfo = gst_gl_nvimage_info (info);
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// anything needed in here ? Oh, maybe drawing de-init, or something
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glDeleteTextures (1, &xconn->ytex_id);
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glDeleteTextures (1, &xconn->uvtex_id);
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glDeleteTextures (1, &xconn->septex_id);
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}
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static void
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gst_gl_nvimage_free_conn (GstImageConnection * conn)
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{
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GstGLImageConnection *nvconn = gst_gl_nvimage_connection (conn);
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g_free (nvconn);
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}
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