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gstreamer/ext/directfb/dfbvideosink.c
Julien Moutte 72e3851f87 ext/directfb/Makefile.am: Add the example application. 
Original commit message from CVS:
2005-11-06  Julien MOUTTE  <julien@moutte.net>

* ext/directfb/Makefile.am: Add the example application.
* ext/directfb/dfb-example.c: (get_me_out), (main):
Here is an example application that runs videotestsrc for 20
seconds. It's included in the documentation.
* ext/directfb/dfbvideosink.c: (gst_dfbvideosink_enum_layers),
(gst_dfbvideosink_setup),
(gst_dfbvideosink_can_blit_from_format),
(gst_dfbvideosink_getcaps), (gst_dfbvideosink_buffer_alloc):
More fixes, calculate new size of the buffer when renegotiating.
This completely breaks ffmpegcolorspace but i need to discuss
that with Wim on monday. Add documentation.
2005-11-05 23:36:20 +00:00

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/* GStreamer DirectFB plugin
* Copyright (C) 2005 Julien MOUTTE <julien@moutte.net>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-dfbvideosink
*
* <refsect2>
* <para>
* DfbVideoSink renders video frames using the
* <ulink url="http://www.directfb.org/">DirectFB</ulink> library.
* Rendering can happen in two different modes :
* <itemizedlist>
* <listitem>
* <para>
* Standalone: this mode will take complete control of the monitor forcing
* <ulink url="http://www.directfb.org/">DirectFB</ulink> to fullscreen layout.
* This is convenient to test using the gst-launch command line tool or
* other simple applications. It is possible to interrupt playback while
* being in this mode by pressing the Escape key.
* </para>
* <para>
* This mode handles navigation events for every input device supported by
* the <ulink url="http://www.directfb.org/">DirectFB</ulink> library, it will
* look for available video modes in the fb.modes file and try to switch
* the framebuffer video mode to the most suitable one. Depending on
* hardware acceleration capabilities the element will handle scaling or not.
* If no acceleration is available it will do clipping or centering of the
* video frames respecting the original aspect ratio.
* </para>
* </listitem>
* <listitem>
* <para>
* Embedded: this mode will render video frames in a
* <link linkend="GstDfbVideoSink--surface">surface</link> provided by the
* application developer. This is a more advanced usage of the element and
* it is required to integrate video playback in existing
* <ulink url="http://www.directfb.org/">DirectFB</ulink> applications.
* </para>
* <para>
* When using this mode the element just renders to the
* <link linkend="GstDfbVideoSink--surface">surface</link> provided by the
* application, that means it won't handle navigation events and won't resize
* the <link linkend="GstDfbVideoSink--surface">surface</link> to fit video
* frames geometry. Application has to implement the necessary code to grab
* informations about the negotiated geometry and resize there
* <link linkend="GstDfbVideoSink--surface">surface</link> accordingly.
* </para>
* </listitem>
* </itemizedlist>
* For both modes the element implements a buffer pool allocation system to
* optimize memory allocation time and handle reverse negotiation. Indeed if
* you insert an element like videoscale in the pipeline the video sink will
* negotiate with it to try get a scaled video for either the fullscreen layout
* or the application provided external
* <link linkend="GstDfbVideoSink--surface">surface</link>.
* </para>
* <title>Example application</title>
* <para>
* <include xmlns="http://www.w3.org/2003/XInclude" href="element-dfb-example.xml" />
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* Our interfaces */
#include <gst/interfaces/navigation.h>
/* Object header */
#include "dfbvideosink.h"
#include <string.h>
#include <liboil/liboil.h>
/* Debugging category */
GST_DEBUG_CATEGORY (dfbvideosink_debug);
#define GST_CAT_DEFAULT dfbvideosink_debug
/* ElementFactory information */
static GstElementDetails gst_dfbvideosink_details =
GST_ELEMENT_DETAILS ("Video sink",
"Sink/Video",
"A DirectFB based videosink",
"Julien Moutte <julien@moutte.net>");
/* Default template */
static GstStaticPadTemplate gst_dfbvideosink_sink_template_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw-rgb, "
"framerate = (double) [ 0.0, MAX ], "
"width = (int) [ 1, MAX ], "
"height = (int) [ 1, MAX ]; "
"video/x-raw-yuv, "
"framerate = (double) [ 0.0, MAX ], "
"width = (int) [ 1, MAX ], " "height = (int) [ 1, MAX ]")
);
/* Signals and args */
enum
{
ARG_0,
ARG_SURFACE
};
static void gst_dfbvideosink_bufferpool_clear (GstDfbVideoSink * dfbvideosink);
static DFBSurfacePixelFormat gst_dfbvideosink_get_format_from_caps (GstCaps *
caps);
static GstVideoSinkClass *parent_class = NULL;
static const char *
gst_dfbvideosink_get_format_name (DFBSurfacePixelFormat format)
{
switch (format) {
case DSPF_ARGB1555:
return "ARGB1555";
case DSPF_RGB16:
return "RGB16";
case DSPF_RGB24:
return "RGB24";
case DSPF_RGB32:
return "RGB32";
case DSPF_ARGB:
return "ARGB";
case DSPF_A8:
return "A8";
case DSPF_YUY2:
return "YUY2";
case DSPF_RGB332:
return "RGB33";
case DSPF_UYVY:
return "UYVY";
case DSPF_I420:
return "I420";
case DSPF_YV12:
return "YV12";
case DSPF_LUT8:
return "LUT8";
case DSPF_ALUT44:
return "ALUT44";
case DSPF_AiRGB:
return "AiRGB";
case DSPF_A1:
return "A1";
case DSPF_NV12:
return "NV12";
case DSPF_NV16:
return "NV16";
case DSPF_ARGB2554:
return "ARGB2554";
case DSPF_ARGB4444:
return "ARGB4444";
case DSPF_NV21:
return "NV21";
default:
return "UNKNOWN";
}
}
/* Creates miniobject and our internal surface */
static GstDfbSurface *
gst_dfbvideosink_surface_create (GstDfbVideoSink * dfbvideosink, GstCaps * caps,
size_t size)
{
GstDfbSurface *surface = NULL;
GstStructure *structure = NULL;
DFBResult ret;
DFBSurfaceDescription s_dsc;
gpointer data;
gint pitch;
g_return_val_if_fail (GST_IS_DFBVIDEOSINK (dfbvideosink), NULL);
surface = (GstDfbSurface *) gst_mini_object_new (GST_TYPE_DFBSURFACE);
surface->locked = FALSE;
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "width", &surface->width) ||
!gst_structure_get_int (structure, "height", &surface->height)) {
GST_WARNING ("failed getting geometry from caps %" GST_PTR_FORMAT, caps);
}
surface->pixel_format = gst_dfbvideosink_get_format_from_caps (caps);
if (dfbvideosink->dfb) {
/* Creating an internal surface which will be used as GstBuffer, we used
the detected pixel format and video dimensions */
s_dsc.flags =
DSDESC_PIXELFORMAT | DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_CAPS;
s_dsc.pixelformat = surface->pixel_format;
s_dsc.width = surface->width;
s_dsc.height = surface->height;
s_dsc.caps = DSCAPS_VIDEOONLY;
ret = dfbvideosink->dfb->CreateSurface (dfbvideosink->dfb, &s_dsc,
&surface->surface);
if (ret != DFB_OK) {
GST_WARNING ("failed creating a DirectFB surface");
gst_object_unref (surface);
surface = NULL;
goto beach;
}
/* Clearing surface */
surface->surface->Clear (surface->surface, 0x00, 0x00, 0x00, 0xFF);
/* Locking the surface to acquire the memory pointer */
surface->surface->Lock (surface->surface, DSLF_WRITE, &data, &pitch);
surface->locked = TRUE;
GST_BUFFER_DATA (surface) = data;
GST_BUFFER_SIZE (surface) = pitch * surface->height;
GST_DEBUG ("creating a %dx%d surface with %s pixel format, line pitch %d",
surface->width, surface->height,
gst_dfbvideosink_get_format_name (surface->pixel_format), pitch);
} else {
GST_BUFFER (surface)->malloc_data = g_malloc (size);
GST_BUFFER_DATA (surface) = GST_BUFFER (surface)->malloc_data;
GST_BUFFER_SIZE (surface) = size;
surface->surface = NULL;
GST_DEBUG ("allocating a buffer of %d bytes", size);
}
/* Keep a ref to our sink */
surface->dfbvideosink = gst_object_ref (dfbvideosink);
beach:
return surface;
}
/* We are called from the finalize method of miniobject, the object will be
* destroyed so we just have to clean our internal stuff */
static void
gst_dfbvideosink_surface_destroy (GstDfbVideoSink * dfbvideosink,
GstDfbSurface * surface)
{
g_return_if_fail (GST_IS_DFBVIDEOSINK (dfbvideosink));
/* Release our internal surface */
if (surface->surface) {
if (surface->locked) {
surface->surface->Unlock (surface->surface);
surface->locked = FALSE;
}
surface->surface->Release (surface->surface);
surface->surface = NULL;
}
if (GST_BUFFER (surface)->malloc_data) {
g_free (GST_BUFFER (surface)->malloc_data);
GST_BUFFER (surface)->malloc_data = NULL;
}
if (!surface->dfbvideosink) {
goto no_sink;
}
/* Release the ref to our sink */
surface->dfbvideosink = NULL;
gst_object_unref (dfbvideosink);
return;
no_sink:
GST_WARNING ("no sink found in surface");
return;
}
static gpointer
gst_dfbvideosink_event_thread (GstDfbVideoSink * dfbvideosink)
{
DFBResult ret;
while (dfbvideosink->running) {
/* Wait for an event with a 50 ms timeout */
dfbvideosink->event_buffer->WaitForEventWithTimeout (dfbvideosink->
event_buffer, 0, 50);
/* Do we have an event ? */
ret = dfbvideosink->event_buffer->HasEvent (dfbvideosink->event_buffer);
if (ret == DFB_OK) {
DFBEvent event;
GST_DEBUG ("we have an event");
ret = dfbvideosink->event_buffer->GetEvent (dfbvideosink->event_buffer,
&event);
if (ret != DFB_OK) { /* Error */
GST_WARNING ("failed when getting event from event buffer");
} else { /* Handle event */
if (event.input.type == DIET_KEYPRESS) {
switch (event.input.key_symbol) {
case DIKS_ESCAPE:
{
GST_ELEMENT_ERROR (dfbvideosink, RESOURCE, OPEN_WRITE,
("Video output device is gone."),
("We were running fullscreen and user "
"pressed the ESC key, stopping playback."));
}
default:
GST_DEBUG ("key press event %c !", event.input.key_symbol);
gst_navigation_send_key_event (GST_NAVIGATION (dfbvideosink),
"key-press", "prout");
}
} else if (event.input.type == DIET_BUTTONPRESS) {
gint x, y;
dfbvideosink->layer->GetCursorPosition (dfbvideosink->layer, &x, &y);
GST_DEBUG ("button %d pressed at %dx%d", event.input.button, x, y);
gst_navigation_send_mouse_event (GST_NAVIGATION (dfbvideosink),
"mouse-button-press", event.input.button, x, y);
} else if (event.input.type == DIET_BUTTONRELEASE) {
gint x, y;
dfbvideosink->layer->GetCursorPosition (dfbvideosink->layer, &x, &y);
GST_DEBUG ("button %d released at %dx%d", event.input.button, x, y);
gst_navigation_send_mouse_event (GST_NAVIGATION (dfbvideosink),
"mouse-button-release", event.input.button, x, y);
} else if (event.input.type == DIET_AXISMOTION) {
/* Mouse moves have no abs nor rel values */
if ((event.input.flags & DIEF_AXISABS) ||
(event.input.flags & DIEF_AXISREL)) {
GST_DEBUG ("joypad move ?");
} else {
gint x, y;
dfbvideosink->layer->GetCursorPosition (dfbvideosink->layer, &x,
&y);
gst_navigation_send_mouse_event (GST_NAVIGATION (dfbvideosink),
"mouse-move", 0, x, y);
}
} else {
GST_WARNING ("unhandled event type %d", event.input.type);
}
}
}
}
return NULL;
}
static DFBEnumerationResult
gst_dfbvideosink_enum_layers (DFBDisplayLayerID id,
DFBDisplayLayerDescription desc, void *data)
{
GstDfbVideoSink *dfbvideosink = NULL;
IDirectFBDisplayLayer *layer = NULL;
DFBDisplayLayerConfig dlc;
DFBResult ret;
gboolean backbuffer = FALSE;
g_return_val_if_fail (GST_IS_DFBVIDEOSINK (data), DFENUM_CANCEL);
dfbvideosink = GST_DFBVIDEOSINK (data);
GST_DEBUG ("inspecting display layer %d with name: %s", id, desc.name);
if ((desc.type & DLTF_VIDEO) && (desc.caps & DLCAPS_SURFACE)) {
GST_DEBUG ("this layer can handle live video and has a surface");
goto beach; /* It seems that kind of overlay is not very well supported */
} else {
if (desc.caps & DLCAPS_SURFACE) {
GST_DEBUG ("this layer can not handle live video but has a surface");
} else {
GST_DEBUG ("no we can't use that layer, really...");
goto beach;
}
}
ret = dfbvideosink->dfb->GetDisplayLayer (dfbvideosink->dfb, id, &layer);
if (ret != DFB_OK) {
GST_WARNING ("failed getting display layer %s", desc.name);
goto beach;
}
ret = layer->GetConfiguration (layer, &dlc);
if (ret != DFB_OK) {
GST_WARNING ("failed getting display layer configuration");
goto beach;
}
if ((dlc.flags & DLCONF_BUFFERMODE) && (dlc.buffermode & DLBM_FRONTONLY)) {
GST_DEBUG ("no backbuffer");
}
if ((dlc.flags & DLCONF_BUFFERMODE) && (dlc.buffermode & DLBM_BACKVIDEO)) {
GST_DEBUG ("backbuffer is in video memory");
backbuffer = TRUE;
}
if ((dlc.flags & DLCONF_BUFFERMODE) && (dlc.buffermode & DLBM_BACKSYSTEM)) {
GST_DEBUG ("backbuffer is in system memory");
backbuffer = TRUE;
}
if ((dlc.flags & DLCONF_BUFFERMODE) && (dlc.buffermode & DLBM_TRIPLE)) {
GST_DEBUG ("triple buffering");
backbuffer = TRUE;
}
dfbvideosink->backbuffer = backbuffer;
dfbvideosink->layer_id = id;
beach:
if (layer) {
layer->Release (layer);
}
return DFENUM_OK;
}
static DFBEnumerationResult
gst_dfbvideosink_enum_vmodes (gint width, gint height, gint bpp, void *data)
{
GstDfbVideoSink *dfbvideosink = NULL;
GstDfbVMode *vmode = NULL;
g_return_val_if_fail (GST_IS_DFBVIDEOSINK (data), DFENUM_CANCEL);
dfbvideosink = GST_DFBVIDEOSINK (data);
GST_DEBUG ("adding video mode %dx%d at %d bpp", width, height, bpp);
vmode = g_new0 (GstDfbVMode, 1);
vmode->width = width;
vmode->height = height;
vmode->bpp = bpp;
/* We need to know the maximum video geometry we can accept for the caps */
if (width > dfbvideosink->out_width) {
dfbvideosink->out_width = width;
}
if (height > dfbvideosink->out_height) {
dfbvideosink->out_height = height;
}
dfbvideosink->vmodes = g_slist_append (dfbvideosink->vmodes, vmode);
return DFENUM_OK;
}
static DFBEnumerationResult
gst_dfbvideosink_enum_devices (DFBInputDeviceID id,
DFBInputDeviceDescription desc, void *data)
{
GstDfbVideoSink *dfbvideosink = NULL;
IDirectFBInputDevice *device = NULL;
DFBResult ret;
g_return_val_if_fail (GST_IS_DFBVIDEOSINK (data), DFENUM_CANCEL);
dfbvideosink = GST_DFBVIDEOSINK (data);
GST_DEBUG ("detected input device %s from vendor %s", desc.name, desc.vendor);
/* Get that input device */
ret = dfbvideosink->dfb->GetInputDevice (dfbvideosink->dfb, id, &device);
if (ret != DFB_OK) {
GST_WARNING ("failed when getting input device id %d", id);
goto beach;
}
ret = device->AttachEventBuffer (device, dfbvideosink->event_buffer);
if (ret != DFB_OK) {
GST_WARNING ("failed when attaching input device %d to our event buffer",
id);
}
beach:
if (device) {
device->Release (device);
}
return DFENUM_OK;
}
static gboolean
gst_dfbvideosink_setup (GstDfbVideoSink * dfbvideosink)
{
DFBResult ret;
g_return_val_if_fail (GST_IS_DFBVIDEOSINK (dfbvideosink), FALSE);
dfbvideosink->video_width = 0;
dfbvideosink->video_height = 0;
dfbvideosink->out_width = 0;
dfbvideosink->out_height = 0;
dfbvideosink->framerate = 0.0;
dfbvideosink->hw_scaling = FALSE;
dfbvideosink->backbuffer = FALSE;
dfbvideosink->pixel_format = DSPF_UNKNOWN;
/* If we do it all by ourself we create the DirectFB context, get the
primary layer and use a fullscreen configuration */
if (!dfbvideosink->ext_surface) {
GST_DEBUG ("no external surface, taking over DirectFB fullscreen");
if (!dfbvideosink->dfb) {
DFBGraphicsDeviceDescription hw_caps;
GST_DEBUG ("initializing DirectFB");
ret = DirectFBInit (0, NULL);
if (ret != DFB_OK) {
GST_WARNING ("DirectFB initialization failed");
goto beach;
}
ret = DirectFBCreate (&(dfbvideosink->dfb));
if (ret != DFB_OK) {
GST_WARNING ("failed creating the DirectFB main object");
goto beach;
}
/* Get Hardwared capabilities */
ret = dfbvideosink->dfb->GetDeviceDescription (dfbvideosink->dfb,
&hw_caps);
if (ret != DFB_OK) {
GST_WARNING ("failed grabbing the hardware capabilities");
goto beach;
}
GST_DEBUG ("video card %s from vendor %s detected with %d bytes of "
"video memory", hw_caps.name, hw_caps.vendor, hw_caps.video_memory);
if (hw_caps.acceleration_mask & DFXL_BLIT) {
GST_DEBUG ("Blit is accelerated");
}
if (hw_caps.acceleration_mask & DFXL_STRETCHBLIT) {
GST_DEBUG ("StretchBlit is accelerated");
dfbvideosink->hw_scaling = TRUE;
} else {
GST_DEBUG ("StretchBlit is not accelerated");
dfbvideosink->hw_scaling = FALSE;
}
dfbvideosink->layer_id = -1;
/* Inspect all the Display layers */
dfbvideosink->dfb->EnumDisplayLayers (dfbvideosink->dfb,
gst_dfbvideosink_enum_layers, dfbvideosink);
/* Inspect all Video modes */
dfbvideosink->dfb->EnumVideoModes (dfbvideosink->dfb,
gst_dfbvideosink_enum_vmodes, dfbvideosink);
/* Create an event buffer for input */
dfbvideosink->dfb->CreateEventBuffer (dfbvideosink->dfb,
&dfbvideosink->event_buffer);
/* Inspect all Input devices */
dfbvideosink->dfb->EnumInputDevices (dfbvideosink->dfb,
gst_dfbvideosink_enum_devices, dfbvideosink);
/* Create a thread to handle those events */
dfbvideosink->event_thread = g_thread_create (
(GThreadFunc) gst_dfbvideosink_event_thread,
dfbvideosink, TRUE, NULL);
}
if (!dfbvideosink->layer) {
/* Get the best Display Layer */
ret = dfbvideosink->dfb->GetDisplayLayer (dfbvideosink->dfb,
dfbvideosink->layer_id, &dfbvideosink->layer);
if (ret != DFB_OK) {
GST_WARNING ("failed getting display layer");
goto beach;
}
ret = dfbvideosink->layer->SetCooperativeLevel (dfbvideosink->layer,
DLSCL_EXCLUSIVE);
if (ret != DFB_OK) {
GST_WARNING ("failed setting display layer to fullscreen mode");
goto beach;
}
dfbvideosink->layer->SetBackgroundColor (dfbvideosink->layer,
0x00, 0x00, 0x00, 0xFF);
dfbvideosink->layer->EnableCursor (dfbvideosink->layer, TRUE);
GST_DEBUG ("getting primary surface");
dfbvideosink->layer->GetSurface (dfbvideosink->layer,
&dfbvideosink->primary);
dfbvideosink->primary->SetBlittingFlags (dfbvideosink->primary,
DSBLIT_NOFX);
}
dfbvideosink->primary->GetPixelFormat (dfbvideosink->primary,
&dfbvideosink->pixel_format);
} else {
DFBSurfaceCapabilities s_caps;
GST_DEBUG ("getting pixel format from foreign surface %p",
dfbvideosink->ext_surface);
dfbvideosink->ext_surface->GetPixelFormat (dfbvideosink->ext_surface,
&dfbvideosink->pixel_format);
dfbvideosink->ext_surface->GetSize (dfbvideosink->ext_surface,
&dfbvideosink->out_width, &dfbvideosink->out_height);
dfbvideosink->ext_surface->GetCapabilities (dfbvideosink->ext_surface,
&s_caps);
if ((s_caps & DSCAPS_DOUBLE) || (s_caps & DSCAPS_TRIPLE)) {
dfbvideosink->backbuffer = TRUE;
} else {
dfbvideosink->backbuffer = FALSE;
}
GST_DEBUG ("external surface is %dx%d and uses %s pixel format",
dfbvideosink->out_width, dfbvideosink->out_height,
gst_dfbvideosink_get_format_name (dfbvideosink->pixel_format));
}
dfbvideosink->setup = TRUE;
beach:
return dfbvideosink->setup;
}
static void
gst_dfbvideosink_cleanup (GstDfbVideoSink * dfbvideosink)
{
g_return_if_fail (GST_IS_DFBVIDEOSINK (dfbvideosink));
GST_DEBUG ("cleaning up DirectFB environment");
/* Wait for our event thread */
if (dfbvideosink->event_thread) {
g_thread_join (dfbvideosink->event_thread);
dfbvideosink->event_thread = NULL;
}
if (dfbvideosink->event_buffer) {
dfbvideosink->event_buffer->Release (dfbvideosink->event_buffer);
dfbvideosink->event_buffer = NULL;
}
if (dfbvideosink->vmodes) {
GSList *walk = dfbvideosink->vmodes;
while (walk) {
g_free (walk->data);
walk = g_slist_next (walk);
}
g_slist_free (dfbvideosink->vmodes);
dfbvideosink->vmodes = NULL;
}
if (dfbvideosink->buffer_pool) {
gst_dfbvideosink_bufferpool_clear (dfbvideosink);
}
if (dfbvideosink->primary) {
dfbvideosink->primary->Release (dfbvideosink->primary);
dfbvideosink->primary = NULL;
}
if (dfbvideosink->layer) {
dfbvideosink->layer->EnableCursor (dfbvideosink->layer, FALSE);
dfbvideosink->layer->Release (dfbvideosink->layer);
dfbvideosink->layer = NULL;
}
if (dfbvideosink->dfb) {
dfbvideosink->dfb->Release (dfbvideosink->dfb);
dfbvideosink->dfb = NULL;
}
dfbvideosink->setup = FALSE;
}
static DFBSurfacePixelFormat
gst_dfbvideosink_get_format_from_caps (GstCaps * caps)
{
GstStructure *structure;
gboolean ret;
DFBSurfacePixelFormat pixel_format = DSPF_UNKNOWN;
g_return_val_if_fail (GST_IS_CAPS (caps), DSPF_UNKNOWN);
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "video/x-raw-rgb")) {
gint bpp, depth;
ret = gst_structure_get_int (structure, "bpp", &bpp);
ret &= gst_structure_get_int (structure, "depth", &depth);
if (!ret) {
goto beach;
}
switch (bpp) {
case 16:
pixel_format = DSPF_RGB16;
break;
case 24:
pixel_format = DSPF_RGB24;
break;
case 32:
if (depth == 24) {
pixel_format = DSPF_RGB32;
} else if (depth == 32) {
pixel_format = DSPF_ARGB;
} else {
goto beach;
}
break;
default:
GST_WARNING ("unhandled RGB format, bpp %d, depth %d", bpp, depth);
goto beach;
}
} else if (gst_structure_has_name (structure, "video/x-raw-yuv")) {
guint32 fourcc;
ret = gst_structure_get_fourcc (structure, "format", &fourcc);
if (!ret) {
GST_WARNING ("failed grabbing fourcc from caps %" GST_PTR_FORMAT, caps);
goto beach;
}
switch (fourcc) {
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
pixel_format = DSPF_I420;
break;
case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
pixel_format = DSPF_YV12;
break;
case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
pixel_format = DSPF_YUY2;
break;
case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
pixel_format = DSPF_UYVY;
break;
default:
GST_WARNING ("unhandled YUV format" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
goto beach;
}
} else {
GST_WARNING ("unknown caps name received %" GST_PTR_FORMAT, caps);
goto beach;
}
beach:
return pixel_format;
}
static GstCaps *
gst_dfbvideosink_get_caps_from_format (DFBSurfacePixelFormat format)
{
GstCaps *caps = NULL;
gboolean is_rgb = FALSE, is_yuv = FALSE;
gint bpp, depth;
guint32 fourcc;
g_return_val_if_fail (format != DSPF_UNKNOWN, NULL);
switch (format) {
case DSPF_RGB16:
is_rgb = TRUE;
bpp = 16;
depth = 16;
break;
case DSPF_RGB24:
is_rgb = TRUE;
bpp = 24;
depth = 24;
break;
case DSPF_RGB32:
is_rgb = TRUE;
bpp = 32;
depth = 24;
break;
case DSPF_ARGB:
is_rgb = TRUE;
bpp = 32;
depth = 32;
break;
case DSPF_YUY2:
is_yuv = TRUE;
fourcc = GST_MAKE_FOURCC ('Y', 'U', 'Y', '2');
break;
case DSPF_UYVY:
is_yuv = TRUE;
fourcc = GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y');
break;
case DSPF_I420:
is_yuv = TRUE;
fourcc = GST_MAKE_FOURCC ('I', '4', '2', '0');
break;
case DSPF_YV12:
is_yuv = TRUE;
fourcc = GST_MAKE_FOURCC ('Y', 'V', '1', '2');
break;
default:
GST_WARNING ("unknown pixel format %s",
gst_dfbvideosink_get_format_name (format));
goto beach;
}
if (is_rgb) {
caps = gst_caps_new_simple ("video/x-raw-rgb",
"bpp", G_TYPE_INT, bpp, "depth", G_TYPE_INT, depth, NULL);
} else if (is_yuv) {
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, fourcc, NULL);
} else {
GST_WARNING ("neither rgb nor yuv, something strange here");
}
beach:
return caps;
}
static gboolean
gst_dfbvideosink_can_blit_from_format (GstDfbVideoSink * dfbvideosink,
DFBSurfacePixelFormat format)
{
gboolean res = FALSE;
DFBResult ret;
IDirectFBSurface *surface = NULL;
DFBSurfaceDescription s_dsc;
DFBAccelerationMask mask;
DFBDisplayLayerConfig dlc, prev_dlc;
g_return_val_if_fail (GST_IS_DFBVIDEOSINK (dfbvideosink), FALSE);
/* Create a surface of desired format */
s_dsc.flags = DSDESC_PIXELFORMAT | DSDESC_WIDTH | DSDESC_HEIGHT;
s_dsc.pixelformat = format;
s_dsc.width = 10;
s_dsc.height = 10;
ret = dfbvideosink->dfb->CreateSurface (dfbvideosink->dfb, &s_dsc, &surface);
if (ret != DFB_OK) {
GST_WARNING ("failed creating surface with format %s",
gst_dfbvideosink_get_format_name (format));
goto beach;
}
/* Backup layer configuration */
ret = dfbvideosink->layer->GetConfiguration (dfbvideosink->layer, &prev_dlc);
if (ret != DFB_OK) {
GST_WARNING ("failed when getting current layer configuration");
goto beach;
}
/* Test configuration of the layer to this pixel format */
dlc.flags = DLCONF_PIXELFORMAT;
dlc.pixelformat = format;
ret = dfbvideosink->layer->TestConfiguration (dfbvideosink->layer, &dlc,
NULL);
if (ret != DFB_OK) {
GST_DEBUG ("our layer refuses to operate in pixel format %s",
gst_dfbvideosink_get_format_name (format));
goto beach;
}
ret = dfbvideosink->layer->SetConfiguration (dfbvideosink->layer, &dlc);
if (ret != DFB_OK) {
GST_WARNING ("our layer refuses to operate in pixel format, though this "
"format was successfully tested earlied %s",
gst_dfbvideosink_get_format_name (format));
goto beach;
}
ret = dfbvideosink->primary->GetAccelerationMask (dfbvideosink->primary,
surface, &mask);
if (ret != DFB_OK) {
GST_WARNING ("failed getting acceleration mask");
goto beach;
}
/* Blitting from this format to our primary is accelerated */
if (mask & DFXL_BLIT) {
GST_DEBUG ("blitting from format %s to our primary is accelerated",
gst_dfbvideosink_get_format_name (format));
res = TRUE;
} else {
GST_DEBUG ("blitting from format %s to our primary is not accelerated",
gst_dfbvideosink_get_format_name (format));
res = FALSE;
}
/* Restore original layer configuration */
ret = dfbvideosink->layer->SetConfiguration (dfbvideosink->layer, &prev_dlc);
if (ret != DFB_OK) {
GST_WARNING ("failed when restoring layer configuration");
goto beach;
}
beach:
if (surface) {
surface->Release (surface);
}
return res;
}
static gboolean
gst_dfbvideosink_get_best_vmode (GstDfbVideoSink * dfbvideosink, gint v_width,
gint v_height, GstDfbVMode * best_vmode)
{
GSList *walk = NULL;
gboolean ret = FALSE;
gint width, height, bpp;
GstDfbVMode *vmode = NULL;
g_return_val_if_fail (GST_IS_DFBVIDEOSINK (dfbvideosink), FALSE);
if (!dfbvideosink->vmodes) {
goto beach;
}
walk = dfbvideosink->vmodes;
vmode = (GstDfbVMode *) walk->data;
/* First mode */
width = vmode->width;
height = vmode->height;
bpp = vmode->bpp;
while (walk) {
gint wgap, hgap, best_wgap, best_hgap;
vmode = (GstDfbVMode *) walk->data;
/* What are the gaps */
wgap = abs (vmode->width - v_width);
hgap = abs (vmode->height - v_height);
best_wgap = abs (width - v_width);
best_hgap = abs (height - v_height);
/* If this mode is better we ll use that */
if (wgap + hgap < best_wgap + best_hgap) {
width = vmode->width;
height = vmode->height;
bpp = vmode->bpp;
}
walk = g_slist_next (walk);
}
GST_DEBUG ("found video mode %dx%d for input at %dx%d", width, height,
v_width, v_height);
best_vmode->width = width;
best_vmode->height = height;
best_vmode->bpp = bpp;
ret = TRUE;
beach:
return ret;
}
static GstCaps *
gst_dfbvideosink_getcaps (GstBaseSink * bsink)
{
GstDfbVideoSink *dfbvideosink;
GstCaps *caps = NULL;
gint i;
dfbvideosink = GST_DFBVIDEOSINK (bsink);
if (!dfbvideosink->setup) {
caps = gst_caps_copy (gst_pad_get_pad_template_caps (GST_VIDEO_SINK_PAD
(dfbvideosink)));
GST_DEBUG ("getcaps called and we are not setup yet, "
"returning template %" GST_PTR_FORMAT, caps);
goto beach;
} else {
GST_DEBUG ("getcaps called, checking our internal format");
if (dfbvideosink->ext_surface) {
/* We are not rendering to our own surface, returning this surface's
* pixel format */
caps = gst_dfbvideosink_get_caps_from_format (dfbvideosink->pixel_format);
} else {
/* Try some formats */
caps = gst_caps_new_empty ();
if (gst_dfbvideosink_can_blit_from_format (dfbvideosink, DSPF_RGB16)) {
gst_caps_append (caps,
gst_dfbvideosink_get_caps_from_format (DSPF_RGB16));
}
if (gst_dfbvideosink_can_blit_from_format (dfbvideosink, DSPF_RGB24)) {
gst_caps_append (caps,
gst_dfbvideosink_get_caps_from_format (DSPF_RGB24));
}
/* There's something wrong with RGB32, ffmpegcolorspace ?
if (gst_dfbvideosink_can_blit_from_format (dfbvideosink, DSPF_RGB32)) {
gst_caps_append (caps,
gst_dfbvideosink_get_caps_from_format (DSPF_RGB32));
} */
if (gst_dfbvideosink_can_blit_from_format (dfbvideosink, DSPF_ARGB)) {
gst_caps_append (caps,
gst_dfbvideosink_get_caps_from_format (DSPF_ARGB));
}
if (gst_dfbvideosink_can_blit_from_format (dfbvideosink, DSPF_YUY2)) {
gst_caps_append (caps,
gst_dfbvideosink_get_caps_from_format (DSPF_YUY2));
}
if (gst_dfbvideosink_can_blit_from_format (dfbvideosink, DSPF_UYVY)) {
gst_caps_append (caps,
gst_dfbvideosink_get_caps_from_format (DSPF_UYVY));
}
if (gst_dfbvideosink_can_blit_from_format (dfbvideosink, DSPF_I420)) {
gst_caps_append (caps,
gst_dfbvideosink_get_caps_from_format (DSPF_I420));
}
if (gst_dfbvideosink_can_blit_from_format (dfbvideosink, DSPF_YV12)) {
gst_caps_append (caps,
gst_dfbvideosink_get_caps_from_format (DSPF_YV12));
}
}
}
for (i = 0; i < gst_caps_get_size (caps); i++) {
GstStructure *structure = gst_caps_get_structure (caps, i);
gst_structure_set (structure,
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"framerate", GST_TYPE_DOUBLE_RANGE, 0.0, G_MAXDOUBLE, NULL);
}
GST_DEBUG ("returning our caps %" GST_PTR_FORMAT, caps);
beach:
return caps;
}
static gboolean
gst_dfbvideosink_setcaps (GstBaseSink * bsink, GstCaps * caps)
{
GstDfbVideoSink *dfbvideosink;
GstStructure *structure;
gboolean res, result = FALSE;
gint video_width, video_height;
DFBSurfacePixelFormat pixel_format = DSPF_UNKNOWN;
dfbvideosink = GST_DFBVIDEOSINK (bsink);
structure = gst_caps_get_structure (caps, 0);
res = gst_structure_get_int (structure, "width", &video_width);
res &= gst_structure_get_int (structure, "height", &video_height);
res &= gst_structure_get_double (structure, "framerate",
&dfbvideosink->framerate);
if (!res) {
goto beach;
}
pixel_format = gst_dfbvideosink_get_format_from_caps (caps);
GST_DEBUG ("setcaps called, %dx%d %s video at %f fps", video_width,
video_height, gst_dfbvideosink_get_format_name (pixel_format),
dfbvideosink->framerate);
/* Try to adapt the video mode to the video geometry */
if (dfbvideosink->dfb) {
DFBResult ret;
GstDfbVMode vmode;
GST_DEBUG ("trying to adapt the video mode to video geometry");
/* Set video mode and layer configuration appropriately */
if (gst_dfbvideosink_get_best_vmode (dfbvideosink, video_width,
video_height, &vmode)) {
DFBDisplayLayerConfig lc;
gint width, height, bpp;
width = vmode.width;
height = vmode.height;
bpp = vmode.bpp;
GST_DEBUG ("setting video mode to %dx%d at %d bpp", width, height, bpp);
ret = dfbvideosink->dfb->SetVideoMode (dfbvideosink->dfb, width,
height, bpp);
if (ret != DFB_OK) {
GST_WARNING ("failed setting video mode %dx%d at %d bpp", width,
height, bpp);
}
lc.flags = DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT;
lc.width = width;
lc.height = height;
lc.pixelformat = pixel_format;
ret = dfbvideosink->layer->SetConfiguration (dfbvideosink->layer, &lc);
if (ret != DFB_OK) {
GST_WARNING ("failed setting layer configuration to %dx%d", width,
height);
} else {
dfbvideosink->out_width = width;
dfbvideosink->out_height = height;
dfbvideosink->pixel_format = pixel_format;
}
}
}
if (pixel_format != dfbvideosink->pixel_format) {
GST_WARNING ("setcaps sent us a different pixel format %s",
gst_dfbvideosink_get_format_name (pixel_format));
goto beach;
}
dfbvideosink->video_width = video_width;
dfbvideosink->video_height = video_height;
result = TRUE;
beach:
return result;
}
static GstStateChangeReturn
gst_dfbvideosink_change_state (GstElement * element, GstStateChange transition)
{
GstDfbVideoSink *dfbvideosink;
GstStateChangeReturn ret;
dfbvideosink = GST_DFBVIDEOSINK (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
dfbvideosink->running = TRUE;
if (!dfbvideosink->setup) {
gst_dfbvideosink_setup (dfbvideosink);
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
/* Blank surface if we have one */
if (dfbvideosink->ext_surface) {
dfbvideosink->ext_surface->Clear (dfbvideosink->ext_surface,
0x00, 0x00, 0x00, 0xFF);
}
if (dfbvideosink->primary) {
dfbvideosink->primary->Clear (dfbvideosink->primary, 0x00, 0x00,
0x00, 0xFF);
}
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
dfbvideosink->framerate = 0;
dfbvideosink->video_width = 0;
dfbvideosink->video_height = 0;
if (dfbvideosink->buffer_pool) {
gst_dfbvideosink_bufferpool_clear (dfbvideosink);
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
dfbvideosink->running = FALSE;
if (dfbvideosink->setup) {
gst_dfbvideosink_cleanup (dfbvideosink);
}
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return ret;
}
static void
gst_dfbvideosink_get_times (GstBaseSink * bsink, GstBuffer * buf,
GstClockTime * start, GstClockTime * end)
{
GstDfbVideoSink *dfbvideosink;
dfbvideosink = GST_DFBVIDEOSINK (bsink);
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
*start = GST_BUFFER_TIMESTAMP (buf);
if (GST_BUFFER_DURATION_IS_VALID (buf)) {
*end = *start + GST_BUFFER_DURATION (buf);
} else {
if (dfbvideosink->framerate > 0) {
*end = *start + GST_SECOND / dfbvideosink->framerate;
}
}
}
}
static void
gst_dfbvideosink_center_rect (DFBRectangle src, DFBRectangle dst,
DFBRectangle * result, gboolean scale)
{
g_return_if_fail (result != NULL);
if (!scale) {
result->w = MIN (src.w, dst.w);
result->h = MIN (src.h, dst.h);
result->x = (dst.w - result->w) / 2;
result->y = (dst.h - result->h) / 2;
} else {
gdouble src_ratio, dst_ratio;
src_ratio = (gdouble) src.w / src.h;
dst_ratio = (gdouble) dst.w / dst.h;
if (src_ratio > dst_ratio) {
result->w = dst.w;
result->h = dst.w / src_ratio;
result->x = 0;
result->y = (dst.h - result->h) / 2;
} else if (src_ratio < dst_ratio) {
result->w = dst.h * src_ratio;
result->h = dst.h;
result->x = (dst.w - result->w) / 2;
result->y = 0;
} else {
result->x = 0;
result->y = 0;
result->w = dst.w;
result->h = dst.h;
}
}
GST_DEBUG ("source is %dx%d dest is %dx%d, result is %dx%d with x,y %dx%d",
src.w, src.h, dst.w, dst.h, result->w, result->h, result->x, result->y);
}
static GstFlowReturn
gst_dfbvideosink_show_frame (GstBaseSink * bsink, GstBuffer * buf)
{
GstDfbVideoSink *dfbvideosink = NULL;
DFBResult res;
DFBRectangle dst, src, result;
GstFlowReturn ret = GST_FLOW_OK;
dfbvideosink = GST_DFBVIDEOSINK (bsink);
if (!dfbvideosink->setup) {
ret = GST_FLOW_UNEXPECTED;
goto beach;
}
if (GST_IS_DFBSURFACE (buf)) {
GstDfbSurface *surface = GST_DFBSURFACE (buf);
src.w = surface->width;
src.h = surface->height;
} else {
src.w = dfbvideosink->video_width;
src.h = dfbvideosink->video_height;
}
/* If we are rendering from a buffer we did not allocate or to an external
* surface, we will memcpy data */
if (!GST_IS_DFBSURFACE (buf) || dfbvideosink->ext_surface) {
IDirectFBSurface *dest = NULL, *surface = NULL;
gpointer data;
gint dest_pitch, src_pitch, line;
/* As we are not blitting no acceleration is possible. If the surface is
* too small we do clipping, if it's too big we center. Theoretically as
* we are using buffer_alloc, there's a chance that we have been able to
* do reverse caps negotiation */
if (dfbvideosink->ext_surface) {
surface = dfbvideosink->ext_surface;
GST_DEBUG ("memcpy to an external surface subsurface");
} else {
surface = dfbvideosink->primary;
GST_DEBUG ("memcpy to a primary subsurface");
}
res = surface->GetSize (surface, &dst.w, &dst.h);
/* Center / Clip */
gst_dfbvideosink_center_rect (src, dst, &result, FALSE);
res = surface->GetSubSurface (surface, &result, &dest);
if (res != DFB_OK) {
GST_WARNING ("failed when getting a sub surface");
ret = GST_FLOW_UNEXPECTED;
goto beach;
}
res = dest->Lock (dest, DSLF_WRITE, &data, &dest_pitch);
if (res != DFB_OK) {
GST_WARNING ("failed locking the external subsurface for writing");
ret = GST_FLOW_ERROR;
goto beach;
}
/* Source video rowbytes */
src_pitch = GST_BUFFER_SIZE (buf) / src.h;
/* Write each line respecting subsurface pitch */
for (line = 0; line < result.h; line++) {
/* We do clipping */
memcpy (data, GST_BUFFER_DATA (buf) + (line * src_pitch),
MIN (src_pitch, dest_pitch));
data += dest_pitch;
}
res = dest->Unlock (dest);
res = dest->Release (dest);
if (dfbvideosink->backbuffer) {
res = surface->Flip (surface, NULL, 0);
}
} else if (dfbvideosink->primary) {
/* Else we will [Stretch]Blit to our primary */
GstDfbSurface *surface = GST_DFBSURFACE (buf);
GST_DEBUG ("blitting to a primary surface");
dfbvideosink->primary->GetSize (dfbvideosink->primary, &dst.w, &dst.h);
/* Unlocking surface before blit */
surface->surface->Unlock (surface->surface);
surface->locked = FALSE;
gst_dfbvideosink_center_rect (src, dst, &result, dfbvideosink->hw_scaling);
if (dfbvideosink->hw_scaling) {
dfbvideosink->primary->StretchBlit (dfbvideosink->primary,
surface->surface, NULL, &result);
} else {
DFBRectangle clip;
clip.x = clip.y = 0;
clip.w = result.w;
clip.h = result.h;
dfbvideosink->primary->Blit (dfbvideosink->primary, surface->surface,
&clip, result.x, result.y);
}
if (dfbvideosink->backbuffer) {
dfbvideosink->primary->Flip (dfbvideosink->primary, NULL, 0);
}
} else {
GST_WARNING ("no primary, no external surface what's going on ?");
ret = GST_FLOW_UNEXPECTED;
goto beach;
}
beach:
return ret;
}
static void
gst_dfbvideosink_bufferpool_clear (GstDfbVideoSink * dfbvideosink)
{
while (dfbvideosink->buffer_pool) {
GstDfbSurface *surface = dfbvideosink->buffer_pool->data;
dfbvideosink->buffer_pool = g_slist_delete_link (dfbvideosink->buffer_pool,
dfbvideosink->buffer_pool);
gst_dfbvideosink_surface_destroy (dfbvideosink, surface);
}
}
/* For every buffer request we create a custom buffer containing and
* IDirectFBSurface or allocate a previously created one that's not used
* anymore. */
static GstFlowReturn
gst_dfbvideosink_buffer_alloc (GstBaseSink * bsink, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstDfbVideoSink *dfbvideosink;
GstDfbSurface *surface = NULL;
GstFlowReturn ret = GST_FLOW_OK;
gboolean rev_nego = FALSE;
gint width, height;
GstCaps *desired_caps = NULL;
GstStructure *structure = NULL;
dfbvideosink = GST_DFBVIDEOSINK (bsink);
GST_DEBUG ("a buffer of %d bytes was requested with caps %" GST_PTR_FORMAT
" and offset %llu", size, caps, offset);
desired_caps = gst_caps_copy (caps);
structure = gst_caps_get_structure (desired_caps, 0);
if (gst_structure_get_int (structure, "width", &width) &&
gst_structure_get_int (structure, "height", &height)) {
DFBRectangle dst, src, result;
GstDfbVMode vmode;
/* If we can do hardware scaling we don't do reverse negotiation */
if (dfbvideosink->hw_scaling) {
goto alloc;
}
/* Our desired geometry respects aspect ratio */
src.w = width;
src.h = height;
/* We should adapt the destination to the most suitable video mode */
if (gst_dfbvideosink_get_best_vmode (dfbvideosink, width, height, &vmode)) {
dst.w = vmode.width;
dst.h = vmode.height;
} else {
if (dfbvideosink->ext_surface) {
dfbvideosink->ext_surface->GetSize (dfbvideosink->ext_surface, &dst.w,
&dst.h);
} else {
dfbvideosink->primary->GetSize (dfbvideosink->primary, &dst.w, &dst.h);
}
dfbvideosink->out_width = dst.w;
dfbvideosink->out_height = dst.h;
}
gst_dfbvideosink_center_rect (src, dst, &result, TRUE);
if (width != result.w && height != result.h) {
GstPad *peer = gst_pad_get_peer (GST_VIDEO_SINK_PAD (dfbvideosink));
if (!GST_IS_PAD (peer)) {
/* Is this situation possible ? */
goto alloc;
}
GST_DEBUG ("we would love to receive a %dx%d video", result.w, result.h);
gst_structure_set (structure, "width", G_TYPE_INT, result.w, NULL);
gst_structure_set (structure, "height", G_TYPE_INT, result.h, NULL);
if (gst_pad_accept_caps (peer, desired_caps)) {
gint bpp;
bpp = size / height / width;
rev_nego = TRUE;
width = result.w;
height = result.h;
size = bpp * width * height;
GST_DEBUG ("peed pad accepts our desired caps %" GST_PTR_FORMAT
" buffer size is now %d bytes", desired_caps, size);
} else {
GST_DEBUG ("peer pad does not accept our desired caps %" GST_PTR_FORMAT,
desired_caps);
rev_nego = FALSE;
width = dfbvideosink->video_width;
height = dfbvideosink->video_height;
}
gst_object_unref (peer);
}
}
alloc:
/* Inspect our buffer pool */
while (dfbvideosink->buffer_pool) {
surface = (GstDfbSurface *) dfbvideosink->buffer_pool->data;
if (surface) {
/* Removing from the pool */
dfbvideosink->buffer_pool =
g_slist_delete_link (dfbvideosink->buffer_pool,
dfbvideosink->buffer_pool);
/* If the surface is invalid for our need, destroy */
if ((surface->width != width) ||
(surface->height != height) ||
(surface->pixel_format != dfbvideosink->pixel_format)) {
gst_dfbvideosink_surface_destroy (dfbvideosink, surface);
surface = NULL;
} else {
/* We found a suitable surface */
break;
}
}
}
/* We haven't found anything, creating a new one */
if (!surface) {
if (rev_nego) {
surface = gst_dfbvideosink_surface_create (dfbvideosink, desired_caps,
size);
} else {
surface = gst_dfbvideosink_surface_create (dfbvideosink, caps, size);
}
}
/* Now we should have a surface, set appropriate caps on it */
if (surface) {
if (rev_nego) {
gst_buffer_set_caps (GST_BUFFER (surface), desired_caps);
} else {
gst_buffer_set_caps (GST_BUFFER (surface), caps);
}
}
gst_caps_unref (desired_caps);
*buf = GST_BUFFER (surface);
beach:
return ret;
}
/* Our subclass of GstBuffer */
static void
gst_dfbsurface_finalize (GstDfbSurface * surface)
{
GstDfbVideoSink *dfbvideosink = NULL;
g_return_if_fail (surface != NULL);
dfbvideosink = surface->dfbvideosink;
if (!dfbvideosink)
goto no_sink;
/* If our geometry changed we can't reuse that image. */
if ((surface->width != dfbvideosink->video_width) ||
(surface->height != dfbvideosink->video_height) ||
(surface->pixel_format != dfbvideosink->pixel_format)) {
GST_DEBUG ("destroy image as its size changed %dx%d vs current %dx%d",
surface->width, surface->height,
dfbvideosink->video_width, dfbvideosink->video_height);
gst_dfbvideosink_surface_destroy (dfbvideosink, surface);
} else {
/* In that case we can reuse the image and add it to our image pool. */
GST_DEBUG ("recycling image in pool");
/* need to increment the refcount again to recycle */
gst_buffer_ref (GST_BUFFER (surface));
dfbvideosink->buffer_pool = g_slist_prepend (dfbvideosink->buffer_pool,
surface);
}
return;
no_sink:
GST_WARNING ("no sink found");
return;
}
static void
gst_dfbsurface_init (GstDfbSurface * surface, gpointer g_class)
{
surface->surface = NULL;
surface->width = 0;
surface->height = 0;
surface->pixel_format = DSPF_UNKNOWN;
surface->dfbvideosink = NULL;
}
static void
gst_dfbsurface_class_init (gpointer g_class, gpointer class_data)
{
GstMiniObjectClass *mini_object_class = GST_MINI_OBJECT_CLASS (g_class);
mini_object_class->finalize = (GstMiniObjectFinalizeFunction)
gst_dfbsurface_finalize;
}
GType
gst_dfbsurface_get_type (void)
{
static GType _gst_dfbsurface_type;
if (G_UNLIKELY (_gst_dfbsurface_type == 0)) {
static const GTypeInfo dfbsurface_info = {
sizeof (GstBufferClass),
NULL,
NULL,
gst_dfbsurface_class_init,
NULL,
NULL,
sizeof (GstDfbSurface),
0,
(GInstanceInitFunc) gst_dfbsurface_init,
NULL
};
_gst_dfbsurface_type = g_type_register_static (GST_TYPE_BUFFER,
"GstDfbSurface", &dfbsurface_info, 0);
}
return _gst_dfbsurface_type;
}
/* Interfaces stuff */
static gboolean
gst_dfbvideosink_interface_supported (GstImplementsInterface * iface,
GType type)
{
g_assert (type == GST_TYPE_NAVIGATION);
return TRUE;
}
static void
gst_dfbvideosink_interface_init (GstImplementsInterfaceClass * klass)
{
klass->supported = gst_dfbvideosink_interface_supported;
}
static void
gst_dfbvideosink_navigation_send_event (GstNavigation * navigation,
GstStructure * structure)
{
GstDfbVideoSink *dfbvideosink = GST_DFBVIDEOSINK (navigation);
GstEvent *event;
DFBRectangle src, dst, result;
gint width, height;
double x, y;
GstPad *pad = NULL;
src.w = dfbvideosink->video_width;
src.h = dfbvideosink->video_height;
dst.w = dfbvideosink->out_width;
dst.h = dfbvideosink->out_height;
gst_dfbvideosink_center_rect (src, dst, &result, dfbvideosink->hw_scaling);
event = gst_event_new_navigation (structure);
/* Our coordinates can be wrong here if we centered the video */
/* Converting pointer coordinates to the non scaled geometry */
if (gst_structure_get_double (structure, "pointer_x", &x)) {
double old_x = x;
if (x >= result.x && x <= (result.x + result.w)) {
x -= result.x;
x *= dfbvideosink->video_width;
x /= result.w;
} else {
x = 0;
}
GST_DEBUG ("translated navigation event x coordinate from %f to %f",
old_x, x);
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, x, NULL);
}
if (gst_structure_get_double (structure, "pointer_y", &y)) {
double old_y = y;
if (y >= result.y && y <= (result.y + result.h)) {
y -= result.y;
y *= dfbvideosink->video_height;
y /= result.h;
} else {
y = 0;
}
GST_DEBUG ("translated navigation event y coordinate from %fd to %fd",
old_y, y);
gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE, y, NULL);
}
pad = gst_pad_get_peer (GST_VIDEO_SINK_PAD (dfbvideosink));
if (GST_IS_PAD (pad)) {
gst_pad_send_event (pad, event);
gst_object_unref (pad);
}
}
static void
gst_dfbvideosink_navigation_init (GstNavigationInterface * iface)
{
iface->send_event = gst_dfbvideosink_navigation_send_event;
}
/* Properties */
static void
gst_dfbvideosink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstDfbVideoSink *dfbvideosink;
g_return_if_fail (GST_IS_DFBVIDEOSINK (object));
dfbvideosink = GST_DFBVIDEOSINK (object);
switch (prop_id) {
case ARG_SURFACE:
dfbvideosink->ext_surface = g_value_get_pointer (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_dfbvideosink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstDfbVideoSink *dfbvideosink;
g_return_if_fail (GST_IS_DFBVIDEOSINK (object));
dfbvideosink = GST_DFBVIDEOSINK (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* =========================================== */
/* */
/* Init & Class init */
/* */
/* =========================================== */
static void
gst_dfbvideosink_init (GstDfbVideoSink * dfbvideosink)
{
dfbvideosink->pixel_format = DSPF_UNKNOWN;
dfbvideosink->video_height = 0;
dfbvideosink->video_width = 0;
dfbvideosink->framerate = 0;
dfbvideosink->dfb = NULL;
dfbvideosink->layer = NULL;
dfbvideosink->ext_surface = NULL;
dfbvideosink->primary = NULL;
dfbvideosink->setup = FALSE;
dfbvideosink->running = FALSE;
}
static void
gst_dfbvideosink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &gst_dfbvideosink_details);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_dfbvideosink_sink_template_factory));
}
static void
gst_dfbvideosink_class_init (GstDfbVideoSinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSinkClass *gstbasesink_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbasesink_class = (GstBaseSinkClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_VIDEO_SINK);
gobject_class->set_property = gst_dfbvideosink_set_property;
gobject_class->get_property = gst_dfbvideosink_get_property;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SURFACE,
g_param_spec_pointer ("surface", "Surface",
"The target surface for video", G_PARAM_WRITABLE));
gstelement_class->change_state = gst_dfbvideosink_change_state;
gstbasesink_class->get_caps = gst_dfbvideosink_getcaps;
gstbasesink_class->set_caps = gst_dfbvideosink_setcaps;
gstbasesink_class->buffer_alloc = gst_dfbvideosink_buffer_alloc;
gstbasesink_class->get_times = gst_dfbvideosink_get_times;
gstbasesink_class->preroll = gst_dfbvideosink_show_frame;
gstbasesink_class->render = gst_dfbvideosink_show_frame;
}
/* ============================================================= */
/* */
/* Public Methods */
/* */
/* ============================================================= */
/* =========================================== */
/* */
/* Object typing & Creation */
/* */
/* =========================================== */
GType
gst_dfbvideosink_get_type (void)
{
static GType dfbvideosink_type = 0;
if (!dfbvideosink_type) {
static const GTypeInfo dfbvideosink_info = {
sizeof (GstDfbVideoSinkClass),
gst_dfbvideosink_base_init,
NULL,
(GClassInitFunc) gst_dfbvideosink_class_init,
NULL,
NULL,
sizeof (GstDfbVideoSink),
0,
(GInstanceInitFunc) gst_dfbvideosink_init,
};
static const GInterfaceInfo iface_info = {
(GInterfaceInitFunc) gst_dfbvideosink_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo navigation_info = {
(GInterfaceInitFunc) gst_dfbvideosink_navigation_init,
NULL,
NULL,
};
dfbvideosink_type = g_type_register_static (GST_TYPE_VIDEO_SINK,
"GstDfbVideoSink", &dfbvideosink_info, 0);
g_type_add_interface_static (dfbvideosink_type,
GST_TYPE_IMPLEMENTS_INTERFACE, &iface_info);
g_type_add_interface_static (dfbvideosink_type, GST_TYPE_NAVIGATION,
&navigation_info);
}
return dfbvideosink_type;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "dfbvideosink", GST_RANK_PRIMARY,
GST_TYPE_DFBVIDEOSINK))
return FALSE;
GST_DEBUG_CATEGORY_INIT (dfbvideosink_debug, "dfbvideosink", 0,
"DirectFB video sink element");
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"dfbvideosink",
"DirectFB video output plugin",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)
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