+++ /dev/null
-/* GStreamer fbdev plugin
- * Copyright (C) 2007 Sean D'Epagnier <sean@depagnier.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-/* currently the driver does not switch modes, instead uses current mode.
- the video is centered and cropped if needed to fit onscreen.
- Whatever bitdepth is set is used, and tested to work for 16, 24, 32 bits
-*/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <signal.h>
-#include <string.h>
-#include <sys/time.h>
-#include <stdlib.h>
-
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <unistd.h>
-#include <stdint.h>
-
-#include "gstfbdevsink.h"
-
-enum
-{
- ARG_0,
- ARG_DEVICE
-};
-
-#if 0
-static void gst_fbdevsink_get_times (GstBaseSink * basesink,
- GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
-#endif
-
-static GstFlowReturn gst_fbdevsink_show_frame (GstVideoSink * videosink,
- GstBuffer * buff);
-
-static gboolean gst_fbdevsink_start (GstBaseSink * bsink);
-static gboolean gst_fbdevsink_stop (GstBaseSink * bsink);
-
-static GstCaps *gst_fbdevsink_getcaps (GstBaseSink * bsink, GstCaps * filter);
-static gboolean gst_fbdevsink_setcaps (GstBaseSink * bsink, GstCaps * caps);
-
-static void gst_fbdevsink_finalize (GObject * object);
-static void gst_fbdevsink_set_property (GObject * object,
- guint prop_id, const GValue * value, GParamSpec * pspec);
-static void gst_fbdevsink_get_property (GObject * object,
- guint prop_id, GValue * value, GParamSpec * pspec);
-static GstStateChangeReturn gst_fbdevsink_change_state (GstElement * element,
- GstStateChange transition);
-
-#define VIDEO_CAPS "{ RGB, BGR, BGRx, xBGR, RGB, RGBx, xRGB, RGB15, RGB16 }"
-
-static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (VIDEO_CAPS))
- );
-
-#define parent_class gst_fbdevsink_parent_class
-G_DEFINE_TYPE (GstFBDEVSink, gst_fbdevsink, GST_TYPE_VIDEO_SINK);
-
-static void
-gst_fbdevsink_init (GstFBDEVSink * fbdevsink)
-{
- /* nothing to do here yet */
-}
-
-#if 0
-static void
-gst_fbdevsink_get_times (GstBaseSink * basesink, GstBuffer * buffer,
- GstClockTime * start, GstClockTime * end)
-{
- GstFBDEVSink *fbdevsink;
-
- fbdevsink = GST_FBDEVSINK (basesink);
-
- if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
- *start = GST_BUFFER_TIMESTAMP (buffer);
- if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
- *end = *start + GST_BUFFER_DURATION (buffer);
- } else {
- if (fbdevsink->fps_n > 0) {
- *end = *start +
- gst_util_uint64_scale_int (GST_SECOND, fbdevsink->fps_d,
- fbdevsink->fps_n);
- }
- }
- }
-}
-#endif
-
-static GstCaps *
-gst_fbdevsink_getcaps (GstBaseSink * bsink, GstCaps * filter)
-{
- GstFBDEVSink *fbdevsink;
- GstVideoFormat format;
- GstCaps *caps;
- uint32_t rmask;
- uint32_t gmask;
- uint32_t bmask;
- uint32_t tmask;
- int endianness, depth, bpp;
-
- fbdevsink = GST_FBDEVSINK (bsink);
-
- caps = gst_static_pad_template_get_caps (&sink_template);
-
- /* FIXME: locking */
- if (!fbdevsink->framebuffer)
- goto done;
-
- bpp = fbdevsink->varinfo.bits_per_pixel;
-
- rmask = ((1 << fbdevsink->varinfo.red.length) - 1)
- << fbdevsink->varinfo.red.offset;
- gmask = ((1 << fbdevsink->varinfo.green.length) - 1)
- << fbdevsink->varinfo.green.offset;
- bmask = ((1 << fbdevsink->varinfo.blue.length) - 1)
- << fbdevsink->varinfo.blue.offset;
- tmask = ((1 << fbdevsink->varinfo.transp.length) - 1)
- << fbdevsink->varinfo.transp.offset;
-
- depth = fbdevsink->varinfo.red.length + fbdevsink->varinfo.green.length
- + fbdevsink->varinfo.blue.length;
-
- switch (fbdevsink->varinfo.bits_per_pixel) {
- case 32:
- /* swap endianness of masks */
- rmask = GUINT32_SWAP_LE_BE (rmask);
- gmask = GUINT32_SWAP_LE_BE (gmask);
- bmask = GUINT32_SWAP_LE_BE (bmask);
- tmask = GUINT32_SWAP_LE_BE (tmask);
- depth += fbdevsink->varinfo.transp.length;
- endianness = G_BIG_ENDIAN;
- break;
- case 24:{
- /* swap red and blue masks */
- tmask = rmask;
- rmask = bmask;
- bmask = tmask;
- tmask = 0;
- endianness = G_BIG_ENDIAN;
- break;
- }
- case 15:
- case 16:
- tmask = 0;
- endianness = G_LITTLE_ENDIAN;
- break;
- default:
- goto unsupported_bpp;
- }
-
- format = gst_video_format_from_masks (depth, bpp, endianness, rmask, gmask,
- bmask, tmask);
-
- if (format == GST_VIDEO_FORMAT_UNKNOWN)
- goto unknown_format;
-
- caps = gst_caps_make_writable (caps);
- gst_caps_set_simple (caps, "format", G_TYPE_STRING,
- gst_video_format_to_string (format), NULL);
-
-done:
-
- if (filter != NULL) {
- GstCaps *icaps;
-
- icaps = gst_caps_intersect (caps, filter);
- gst_caps_unref (caps);
- caps = icaps;
- }
-
- return caps;
-
-/* ERRORS */
-unsupported_bpp:
- {
- GST_WARNING_OBJECT (bsink, "unsupported bit depth: %d", bpp);
- return NULL;
- }
-unknown_format:
- {
- GST_WARNING_OBJECT (bsink, "could not map fbdev format to GstVideoFormat: "
- "depth=%u, bpp=%u, endianness=%u, rmask=0x%08x, gmask=0x%08x, "
- "bmask=0x%08x, tmask=0x%08x", depth, bpp, endianness, rmask, gmask,
- bmask, tmask);
- return NULL;
- }
-}
-
-static gboolean
-gst_fbdevsink_setcaps (GstBaseSink * bsink, GstCaps * vscapslist)
-{
- GstFBDEVSink *fbdevsink;
- GstStructure *structure;
- const GValue *fps;
-
- fbdevsink = GST_FBDEVSINK (bsink);
-
- structure = gst_caps_get_structure (vscapslist, 0);
-
- fps = gst_structure_get_value (structure, "framerate");
- fbdevsink->fps_n = gst_value_get_fraction_numerator (fps);
- fbdevsink->fps_d = gst_value_get_fraction_denominator (fps);
-
- gst_structure_get_int (structure, "width", &fbdevsink->width);
- gst_structure_get_int (structure, "height", &fbdevsink->height);
-
- /* calculate centering and scanlengths for the video */
- fbdevsink->bytespp = fbdevsink->fixinfo.line_length / fbdevsink->varinfo.xres;
-
- fbdevsink->cx = ((int) fbdevsink->varinfo.xres - fbdevsink->width) / 2;
- if (fbdevsink->cx < 0)
- fbdevsink->cx = 0;
-
- fbdevsink->cy = ((int) fbdevsink->varinfo.yres - fbdevsink->height) / 2;
- if (fbdevsink->cy < 0)
- fbdevsink->cy = 0;
-
- fbdevsink->linelen = fbdevsink->width * fbdevsink->bytespp;
- if (fbdevsink->linelen > fbdevsink->fixinfo.line_length)
- fbdevsink->linelen = fbdevsink->fixinfo.line_length;
-
- fbdevsink->lines = fbdevsink->height;
- if (fbdevsink->lines > fbdevsink->varinfo.yres)
- fbdevsink->lines = fbdevsink->varinfo.yres;
-
- return TRUE;
-}
-
-
-static GstFlowReturn
-gst_fbdevsink_show_frame (GstVideoSink * videosink, GstBuffer * buf)
-{
-
- GstFBDEVSink *fbdevsink;
- GstMapInfo map;
- int i;
-
- fbdevsink = GST_FBDEVSINK (videosink);
-
- /* optimization could remove this memcpy by allocating the buffer
- in framebuffer memory, but would only work when xres matches
- the video width */
- if (!gst_buffer_map (buf, &map, GST_MAP_READ))
- return GST_FLOW_ERROR;
-
- for (i = 0; i < fbdevsink->lines; i++) {
- memcpy (fbdevsink->framebuffer
- + (i + fbdevsink->cy) * fbdevsink->fixinfo.line_length
- + fbdevsink->cx * fbdevsink->bytespp,
- map.data + i * fbdevsink->width * fbdevsink->bytespp,
- fbdevsink->linelen);
- }
-
- gst_buffer_unmap (buf, &map);
-
- return GST_FLOW_OK;
-}
-
-static gboolean
-gst_fbdevsink_start (GstBaseSink * bsink)
-{
- GstFBDEVSink *fbdevsink;
-
- fbdevsink = GST_FBDEVSINK (bsink);
-
- if (!fbdevsink->device) {
- fbdevsink->device = g_strdup ("/dev/fb0");
- }
-
- fbdevsink->fd = open (fbdevsink->device, O_RDWR);
-
- if (fbdevsink->fd == -1)
- return FALSE;
-
- /* get the fixed screen info */
- if (ioctl (fbdevsink->fd, FBIOGET_FSCREENINFO, &fbdevsink->fixinfo))
- return FALSE;
-
- /* get the variable screen info */
- if (ioctl (fbdevsink->fd, FBIOGET_VSCREENINFO, &fbdevsink->varinfo))
- return FALSE;
-
- /* map the framebuffer */
- fbdevsink->framebuffer = mmap (0, fbdevsink->fixinfo.smem_len,
- PROT_WRITE, MAP_SHARED, fbdevsink->fd, 0);
- if (fbdevsink->framebuffer == MAP_FAILED)
- return FALSE;
-
- return TRUE;
-}
-
-static gboolean
-gst_fbdevsink_stop (GstBaseSink * bsink)
-{
- GstFBDEVSink *fbdevsink;
-
- fbdevsink = GST_FBDEVSINK (bsink);
-
- if (munmap (fbdevsink->framebuffer, fbdevsink->fixinfo.smem_len))
- return FALSE;
-
- if (close (fbdevsink->fd))
- return FALSE;
-
-
- return TRUE;
-}
-
-static void
-gst_fbdevsink_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
-{
- GstFBDEVSink *fbdevsink;
-
- fbdevsink = GST_FBDEVSINK (object);
-
- switch (prop_id) {
- case ARG_DEVICE:{
- g_free (fbdevsink->device);
- fbdevsink->device = g_value_dup_string (value);
- break;
- }
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-
-static void
-gst_fbdevsink_get_property (GObject * object, guint prop_id, GValue * value,
- GParamSpec * pspec)
-{
- GstFBDEVSink *fbdevsink;
-
- fbdevsink = GST_FBDEVSINK (object);
-
- switch (prop_id) {
- case ARG_DEVICE:{
- g_value_set_string (value, fbdevsink->device);
- break;
- }
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static GstStateChangeReturn
-gst_fbdevsink_change_state (GstElement * element, GstStateChange transition)
-{
- GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
-
- g_return_val_if_fail (GST_IS_FBDEVSINK (element), GST_STATE_CHANGE_FAILURE);
-
- ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
- switch (transition) {
- default:
- break;
- }
- return ret;
-}
-
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
- if (!gst_element_register (plugin, "fbdevsink", GST_RANK_NONE,
- GST_TYPE_FBDEVSINK))
- return FALSE;
-
- return TRUE;
-}
-
-static void
-gst_fbdevsink_class_init (GstFBDEVSinkClass * klass)
-{
- GObjectClass *gobject_class;
- GstElementClass *gstelement_class;
- GstBaseSinkClass *basesink_class;
- GstVideoSinkClass *videosink_class;
-
- gobject_class = (GObjectClass *) klass;
- gstelement_class = (GstElementClass *) klass;
- basesink_class = (GstBaseSinkClass *) klass;
- videosink_class = (GstVideoSinkClass *) klass;
-
- gobject_class->set_property = gst_fbdevsink_set_property;
- gobject_class->get_property = gst_fbdevsink_get_property;
- gobject_class->finalize = gst_fbdevsink_finalize;
-
- gstelement_class->change_state =
- GST_DEBUG_FUNCPTR (gst_fbdevsink_change_state);
-
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE,
- g_param_spec_string ("device", "device",
- "The framebuffer device eg: /dev/fb0", NULL, G_PARAM_READWRITE));
-
- basesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_fbdevsink_setcaps);
- basesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_fbdevsink_getcaps);
-#if 0
- basesink_class->get_times = GST_DEBUG_FUNCPTR (gst_fbdevsink_get_times);
-#endif
- basesink_class->start = GST_DEBUG_FUNCPTR (gst_fbdevsink_start);
- basesink_class->stop = GST_DEBUG_FUNCPTR (gst_fbdevsink_stop);
-
- videosink_class->show_frame = GST_DEBUG_FUNCPTR (gst_fbdevsink_show_frame);
-
- gst_element_class_set_static_metadata (gstelement_class, "fbdev video sink",
- "Sink/Video", "Linux framebuffer videosink",
- "Sean D'Epagnier <sean@depagnier.com>");
-
- gst_element_class_add_pad_template (gstelement_class,
- gst_static_pad_template_get (&sink_template));
-}
-
-static void
-gst_fbdevsink_finalize (GObject * object)
-{
- GstFBDEVSink *fbdevsink = GST_FBDEVSINK (object);
-
- g_free (fbdevsink->device);
-
- G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- fbdevsink,
- "Linux framebuffer video sink",
- plugin_init, VERSION, "LGPL", "gst-fbdevsink", "http://ao2.it")
projects / gst-am7xxxsink.git / blobdiff