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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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413 lines
12 KiB
C
413 lines
12 KiB
C
#include "config.h"
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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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#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 <math.h>
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// too lazy to write an API for this ;)
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#include "regcomb_yuvrgb.c"
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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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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 *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, GstCaps *caps);
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static GstImageData * gst_gl_nvimage_get_image (GstImageInfo *info, GstImageConnection *conn);
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static void gst_gl_nvimage_put_image (GstImageInfo *info, 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, GstImageInfo *info);
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static void gst_gl_nvimage_close_conn (GstImageConnection *conn, GstImageInfo *info);
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static void gst_gl_nvimage_free_conn (GstImageConnection *conn);
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GstImagePlugin* 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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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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{
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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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printf("Checking NVidia OpenGL extensions.\n");
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if (!GL_ARB_multitexture_Init()) return FALSE;
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if (!GL_EXT_paletted_texture_Init()) return FALSE;
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if (!GL_NV_register_combiners_Init()) return FALSE;
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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 TRUE;
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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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g_warning("nvimage get caps called, context %p !\n", glXGetCurrentContext());
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/* we don't handle these image information */
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if (xinfo == NULL)
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{
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printf("Invalid XInfo struct !\n");
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return NULL;
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}
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if (gst_gl_nvimage_check_xvideo () == FALSE)
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{
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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 (
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"nvimage_caps",
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"video/x-raw-yuv",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('Y', 'V', '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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g_warning("nvimage returns caps !\n");
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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) 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,
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"height", &conn->h,
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"format", &format,
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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 ('Y', 'V', '1', '2'))
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{
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GST_DEBUG ("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 ("GL_NVImage: caps %p are ok, creating image", 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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/* checks */
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if (xinfo == NULL) return NULL;
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if (nvconn == NULL) 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 be in the same thread as put_image
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image = g_new0(GstNvImage, 1);
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image->data.size = nvconn->w * nvconn->h * 3/2;
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//g_warning("Allocating %d bytes from main memory !", image->data.size);
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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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image->conn = nvconn;
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if (image->data.data == NULL)
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{
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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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int img_width = im->conn->w;
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int img_height = im->conn->h;
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int uv_width = img_width >> 1;
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int uv_height = img_height >> 1;
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unsigned char *buf_y = im->data.data;
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unsigned char *buf_v = (buf_y + img_width * img_height);
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unsigned char *buf_u = buf_v + ((img_width/2) * (img_height/2));
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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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// both upload the video, and redraw the screen
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//glClearColor(0,0.5, 0.3,1.0); // a test color
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glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glTranslatef(0.0, 0.0, -5.0);
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glDisable(GL_TEXTURE_2D);
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if (xinfo->info.demo)
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{
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//g_print("Putting image, context is %p\n", glXGetCurrentContext());
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glTranslatef(0.0, 0.0, -5.0); // make it avoid the clipping plane, zoom 2.0 instead
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glRotatef(180.0*sin(xinfo->rotX),1,0,0);
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glRotatef(180.0*cos(xinfo->rotY),0,1,0);
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xinfo->rotX += 0.01;
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xinfo->rotY -= 0.015;
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float zoom = xinfo->zoom;
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glScalef(zoom,zoom,zoom);
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//glScalef(0.1,0.1,0.1);
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if (xinfo->zoom > 2.0)
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xinfo->zoomdir = -0.01;
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if (xinfo->zoom < 1.0)
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xinfo->zoomdir = 0.01;
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xinfo->zoom += xinfo->zoomdir;
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}
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//Draws the surface rectangle
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if (Ywidth != im->conn->w || Yheight != im->conn->h)
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{
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Ywidth = im->conn->w; Yheight = im->conn->h; UVwidth = im->conn->w/2; UVheight = im->conn->h/2;
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Initialize_Backend(Ywidth,Yheight,UVwidth,UVheight,GL_LINEAR);
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}
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LoadYUVPlanes(Yhandle,Uhandle,Vhandle,img_width,img_height,uv_width,uv_height,buf_y,buf_u,buf_v);
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float xmax = (float)(im->conn->w-1)/tex_xsize;
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float ymax = (float)(im->conn->h-1)/tex_ysize;
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/* Upload the texture here */
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//g_warning("PUTTING IMAGE %f %f %d %d\n", xmax, ymax, tex_xsize, tex_ysize);
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//glColor4f(1,1,1,1); // do NOT set a color here ! Done by Initialize_Backend, or actually SetConst !
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glBegin(GL_QUADS);
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float aspect = img_width/(float)img_height;
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float hor = aspect;
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//g_print("Drawing vertices, context is %p\n", glXGetCurrentContext());
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glNormal3f(0, -1, 0);
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glMultiTexCoord2fARB(GL_TEXTURE0_ARB,0,0);
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glMultiTexCoord2fARB(GL_TEXTURE1_ARB,0,0);
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glMultiTexCoord2fARB(GL_TEXTURE2_ARB,0,0);
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glVertex3f(-hor,1,0);
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glMultiTexCoord2fARB(GL_TEXTURE0_ARB,0,ymax);
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glMultiTexCoord2fARB(GL_TEXTURE1_ARB,0,ymax);
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glMultiTexCoord2fARB(GL_TEXTURE2_ARB,0,ymax);
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glVertex3f(-hor,-1,0);
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glMultiTexCoord2fARB(GL_TEXTURE0_ARB,xmax,ymax);
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glMultiTexCoord2fARB(GL_TEXTURE1_ARB,xmax,ymax);
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glMultiTexCoord2fARB(GL_TEXTURE2_ARB,xmax,ymax);
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glVertex3f(hor,-1,0);
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glMultiTexCoord2fARB(GL_TEXTURE0_ARB,xmax,0);
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glMultiTexCoord2fARB(GL_TEXTURE1_ARB,xmax,0);
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glMultiTexCoord2fARB(GL_TEXTURE2_ARB,xmax,0);
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glVertex3f(hor,1,0);
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glEnd();
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if (xinfo->info.dumpvideo)
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{
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static int framenr = 0;
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char capfilename[255];
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static guint8 *cap_image_data = NULL, *cap_image_data2 = NULL;
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int i;
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// hmmmm, is this reentrant ?!
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if (cap_image_data == NULL)
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cap_image_data = (guint8 *)malloc(img_width * img_height * 3);
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if (cap_image_data2 == NULL)
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cap_image_data2 = (guint8 *)malloc(img_width * img_height * 3);
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printf("Recording frame #%d\n", framenr);
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glReadPixels(0,0,img_width,img_height,GL_RGB,GL_UNSIGNED_BYTE,cap_image_data);
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// invert the pixels
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for (i = 0; i < img_height; i++)
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memcpy(cap_image_data2 + i * img_width * 3, cap_image_data + (img_height-1-i) * img_width * 3, img_width*3);
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sprintf(capfilename, "cap%04d.ppm", framenr);
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FILE *outfile = fopen(capfilename, "wb");
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if (outfile != NULL)
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{
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fprintf(outfile, "P6\n");
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fprintf(outfile,"# created by glsink from GStreamer\n");
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fprintf(outfile,"%d %d\n",img_width,img_height);
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fprintf(outfile,"255\n");
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fwrite(cap_image_data2, sizeof(char), img_width*img_height*3, outfile);
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fclose(outfile);
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}
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framenr++;
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}
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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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{
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nvconn->m_bufslots[im->slot] = 0;
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}
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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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g_print("Opening NVidia connection; OpenGL on Nvidia, using register combiners.\n");
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{
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Ywidth = TEX_XSIZE; Yheight = TEX_YSIZE; UVwidth = TEX_XSIZE/2; UVheight = TEX_YSIZE/2;
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Initialize_Backend(Ywidth,Yheight,UVwidth,UVheight,GL_LINEAR);
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}
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g_print("Done\n");
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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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