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sys/glsink/: Convert gldownload to BaseTransform. Make glfilterexample visually interesting. Add support for variou...

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Original commit message from CVS:
* sys/glsink/gltestsrc.c:
* sys/glsink/gstglbuffer.c:
* sys/glsink/gstglbuffer.h:
* sys/glsink/gstgldownload.c:
* sys/glsink/gstglfilter.c:
* sys/glsink/gstglfilterexample.c:
* sys/glsink/gstgltestsrc.c:
* sys/glsink/gstglupload.c:
Convert gldownload to BaseTransform.  Make glfilterexample
visually interesting.  Add support for various formats to
downloading.  Fix a few places where we leak GL state to
other elements (bad, but hard to prevent).
This commit is contained in:
David Schleef 2007-12-27 04:15:26 +00:00
parent 3b15f24af0
commit 2b704cae58
9 changed files with 246 additions and 122 deletions
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15
ChangeLog
View file

@ -1,3 +1,18 @@
2007-12-26 David Schleef <ds@schleef.org>
* sys/glsink/gltestsrc.c:
* sys/glsink/gstglbuffer.c:
* sys/glsink/gstglbuffer.h:
* sys/glsink/gstgldownload.c:
* sys/glsink/gstglfilter.c:
* sys/glsink/gstglfilterexample.c:
* sys/glsink/gstgltestsrc.c:
* sys/glsink/gstglupload.c:
Convert gldownload to BaseTransform. Make glfilterexample
visually interesting. Add support for various formats to
downloading. Fix a few places where we leak GL state to
other elements (bad, but hard to prevent).
2007-12-26 David Schleef <ds@schleef.org>
* sys/glsink/BUGS:

3
sys/glsink/gltestsrc.c
View file

@ -91,6 +91,9 @@ gst_gl_test_src_smpte (GstGLTestSrc * v, GstGLBuffer * buffer, int w, int h)
glClearColor (0.0, 0.0, 0.0, 1.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glDisable (GL_CULL_FACE);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();

28
sys/glsink/gstglbuffer.c
View file

@ -90,6 +90,9 @@ gst_gl_buffer_new (GstGLDisplay * display, GstGLBufferFormat format,
buffer->display = g_object_ref (display);
buffer->width = width;
buffer->height = height;
/* this is not strictly true, but it's used for compatibility with
* queue and BaseTransform */
GST_BUFFER_SIZE (buffer) = width * height * 4;
gst_gl_display_lock (buffer->display);
glGenTextures (1, &buffer->texture);
@ -129,6 +132,9 @@ gst_gl_buffer_new_from_data (GstGLDisplay * display, GstVideoFormat format,
buffer->display = g_object_ref (display);
buffer->width = width;
buffer->height = height;
/* this is not strictly true, but it's used for compatibility with
* queue and BaseTransform */
GST_BUFFER_SIZE (buffer) = width * height * 4;
gst_gl_display_lock (buffer->display);
glGenTextures (1, &buffer->texture);
@ -234,7 +240,7 @@ gst_gl_buffer_new_from_data (GstGLDisplay * display, GstVideoFormat format,
void
gst_gl_buffer_download (GstGLBuffer * buffer, void *data)
gst_gl_buffer_download (GstGLBuffer * buffer, GstVideoFormat format, void *data)
{
GLuint fbo;
@ -254,15 +260,33 @@ gst_gl_buffer_download (GstGLBuffer * buffer, void *data)
g_assert (glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT) ==
GL_FRAMEBUFFER_COMPLETE_EXT);
/* needs a reset function */
/* we need a reset function */
glMatrixMode (GL_COLOR);
glLoadIdentity ();
glPixelTransferf (GL_POST_COLOR_MATRIX_RED_BIAS, 0);
glPixelTransferf (GL_POST_COLOR_MATRIX_GREEN_BIAS, 0);
glPixelTransferf (GL_POST_COLOR_MATRIX_BLUE_BIAS, 0);
switch (format) {
case GST_VIDEO_FORMAT_RGBx:
glReadPixels (0, 0, buffer->width, buffer->height, GL_RGBA,
GL_UNSIGNED_BYTE, data);
break;
case GST_VIDEO_FORMAT_BGRx:
glReadPixels (0, 0, buffer->width, buffer->height, GL_BGRA,
GL_UNSIGNED_BYTE, data);
break;
case GST_VIDEO_FORMAT_xBGR:
glReadPixels (0, 0, buffer->width, buffer->height, GL_RGBA,
GL_UNSIGNED_INT_8_8_8_8, data);
break;
case GST_VIDEO_FORMAT_xRGB:
glReadPixels (0, 0, buffer->width, buffer->height, GL_BGRA,
GL_UNSIGNED_INT_8_8_8_8, data);
break;
default:
g_assert_not_reached ();
}
glDeleteFramebuffersEXT (1, &fbo);

13
sys/glsink/gstglbuffer.h
View file

@ -44,7 +44,18 @@ GstGLBuffer * gst_gl_buffer_new (GstGLDisplay *display,
GstGLBufferFormat format, int width, int height);
GstGLBuffer * gst_gl_buffer_new_from_data (GstGLDisplay *display,
GstVideoFormat format, int width, int height, void *data);
void gst_gl_buffer_download (GstGLBuffer *buffer, void *data);
void gst_gl_buffer_download (GstGLBuffer *buffer, GstVideoFormat format,
void *data);
#define GST_GL_VIDEO_CAPS \
"video/x-raw-gl," \
"format=(int)[0,10]," \
"width=(int)[1,2048]," \
"height=(int)[1,2048]," \
"pixel-aspect-ratio=(fraction)1/1," \
"framerate=(fraction)[0/1,100/1]"
#endif

223
sys/glsink/gstgldownload.c
View file

@ -23,6 +23,7 @@
#endif
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gst/video/video.h>
#include <gstglbuffer.h>
@ -42,10 +43,7 @@ typedef void (*GstGLDownloadProcessFunc) (GstGLDownload *, guint8 *, guint);
struct _GstGLDownload
{
GstElement element;
GstPad *srcpad;
GstPad *sinkpad;
GstBaseTransform base_transform;
/* < private > */
@ -57,7 +55,7 @@ struct _GstGLDownload
struct _GstGLDownloadClass
{
GstElementClass element_class;
GstBaseTransformClass base_transform_class;
};
static const GstElementDetails element_details = GST_ELEMENT_DETAILS ("FIXME",
@ -65,13 +63,12 @@ static const GstElementDetails element_details = GST_ELEMENT_DETAILS ("FIXME",
"FIXME example filter",
"FIXME <fixme@fixme.com>");
#define GST_GL_VIDEO_CAPS "video/x-raw-gl"
static GstStaticPadTemplate gst_gl_download_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx)
GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB ";"
GST_VIDEO_CAPS_RGBx ";" GST_VIDEO_CAPS_BGRx ";" GST_VIDEO_CAPS_xBGR)
);
static GstStaticPadTemplate gst_gl_download_sink_pad_template =
@ -89,19 +86,26 @@ enum
#define DEBUG_INIT(bla) \
GST_DEBUG_CATEGORY_INIT (gst_gl_download_debug, "gldownload", 0, "gldownload element");
GST_BOILERPLATE_FULL (GstGLDownload, gst_gl_download, GstElement,
GST_TYPE_ELEMENT, DEBUG_INIT);
GST_BOILERPLATE_FULL (GstGLDownload, gst_gl_download, GstBaseTransform,
GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
static void gst_gl_download_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_gl_download_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_gl_download_chain (GstPad * pad, GstBuffer * buf);
static void gst_gl_download_reset (GstGLDownload * download);
static GstStateChangeReturn
gst_gl_download_change_state (GstElement * element, GstStateChange transition);
static gboolean gst_gl_download_sink_setcaps (GstPad * pad, GstCaps * caps);
static gboolean gst_gl_download_set_caps (GstBaseTransform * bt,
GstCaps * incaps, GstCaps * outcaps);
static GstCaps *gst_gl_download_transform_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps);
static gboolean gst_gl_download_start (GstBaseTransform * bt);
static gboolean gst_gl_download_stop (GstBaseTransform * bt);
static GstFlowReturn gst_gl_download_transform (GstBaseTransform * trans,
GstBuffer * inbuf, GstBuffer * outbuf);
static gboolean
gst_gl_download_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
guint * size);
static void
@ -126,22 +130,19 @@ gst_gl_download_class_init (GstGLDownloadClass * klass)
gobject_class->set_property = gst_gl_download_set_property;
gobject_class->get_property = gst_gl_download_get_property;
GST_ELEMENT_CLASS (klass)->change_state = gst_gl_download_change_state;
GST_BASE_TRANSFORM_CLASS (klass)->transform_caps =
gst_gl_download_transform_caps;
GST_BASE_TRANSFORM_CLASS (klass)->transform = gst_gl_download_transform;
GST_BASE_TRANSFORM_CLASS (klass)->start = gst_gl_download_start;
GST_BASE_TRANSFORM_CLASS (klass)->stop = gst_gl_download_stop;
GST_BASE_TRANSFORM_CLASS (klass)->set_caps = gst_gl_download_set_caps;
GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size =
gst_gl_download_get_unit_size;
}
static void
gst_gl_download_init (GstGLDownload * download, GstGLDownloadClass * klass)
{
gst_element_create_all_pads (GST_ELEMENT (download));
download->sinkpad =
gst_element_get_static_pad (GST_ELEMENT (download), "sink");
download->srcpad = gst_element_get_static_pad (GST_ELEMENT (download), "src");
gst_pad_set_setcaps_function (download->sinkpad,
gst_gl_download_sink_setcaps);
gst_pad_set_chain_function (download->sinkpad, gst_gl_download_chain);
gst_gl_download_reset (download);
}
@ -182,116 +183,138 @@ gst_gl_download_reset (GstGLDownload * download)
}
static gboolean
gst_gl_download_start (GstGLDownload * download)
gst_gl_download_start (GstBaseTransform * bt)
{
GstGLDownload *download = GST_GL_DOWNLOAD (bt);
download->format = GST_VIDEO_FORMAT_RGBx;
return TRUE;
}
static gboolean
gst_gl_download_stop (GstGLDownload * download)
gst_gl_download_stop (GstBaseTransform * bt)
{
GstGLDownload *download = GST_GL_DOWNLOAD (bt);
gst_gl_download_reset (download);
return TRUE;
}
static gboolean
gst_gl_download_sink_setcaps (GstPad * pad, GstCaps * caps)
static GstCaps *
gst_gl_download_transform_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps)
{
GstGLDownload *download;
gboolean ret;
GstStructure *structure;
GstCaps *srccaps;
GstCaps *newcaps;
GstStructure *newstruct;
const GValue *width_value;
const GValue *height_value;
const GValue *framerate_value;
const GValue *par_value;
download = GST_GL_DOWNLOAD (gst_pad_get_parent (pad));
GST_DEBUG ("called with %" GST_PTR_FORMAT, caps);
download = GST_GL_DOWNLOAD (bt);
structure = gst_caps_get_structure (caps, 0);
ret = gst_structure_get_int (structure, "width", &download->width);
ret &= gst_structure_get_int (structure, "height", &download->height);
width_value = gst_structure_get_value (structure, "width");
height_value = gst_structure_get_value (structure, "height");
framerate_value = gst_structure_get_value (structure, "framerate");
par_value = gst_structure_get_value (structure, "pixel-aspect-ratio");
if (direction == GST_PAD_SINK) {
newcaps = gst_caps_new_simple ("video/x-raw-rgb", NULL);
} else {
newcaps = gst_caps_new_simple ("video/x-raw-gl", NULL);
}
newstruct = gst_caps_get_structure (newcaps, 0);
gst_structure_set_value (newstruct, "width", width_value);
gst_structure_set_value (newstruct, "height", height_value);
gst_structure_set_value (newstruct, "framerate", framerate_value);
if (par_value) {
gst_structure_set_value (newstruct, "pixel-aspect-ratio", par_value);
} else {
gst_structure_set (newstruct, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1, 1, NULL);
}
return newcaps;
}
static gboolean
gst_gl_download_set_caps (GstBaseTransform * bt, GstCaps * incaps,
GstCaps * outcaps)
{
GstGLDownload *download;
gboolean ret;
download = GST_GL_DOWNLOAD (bt);
GST_DEBUG ("called with %" GST_PTR_FORMAT, incaps);
ret = gst_video_format_parse_caps (outcaps, &download->format,
&download->width, &download->height);
if (!ret) {
GST_DEBUG ("bad caps");
return FALSE;
}
srccaps = gst_video_format_new_caps (download->format,
download->width, download->height, 30, 1, 1, 1);
GST_DEBUG ("srccaps %" GST_PTR_FORMAT, srccaps);
ret = gst_pad_set_caps (download->srcpad, srccaps);
gst_caps_unref (srccaps);
return ret;
}
static gboolean
gst_gl_download_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
guint * size)
{
gboolean ret;
GstStructure *structure;
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "video/x-raw-gl")) {
int width;
int height;
ret = gst_structure_get_int (structure, "width", &width);
ret &= gst_structure_get_int (structure, "height", &height);
/* FIXME */
*size = width * height * 4;
} else {
int width;
int height;
ret = gst_structure_get_int (structure, "width", &width);
ret &= gst_structure_get_int (structure, "height", &height);
/* FIXME */
*size = width * height * 4;
}
return TRUE;
}
static GstFlowReturn
gst_gl_download_chain (GstPad * pad, GstBuffer * buf)
gst_gl_download_transform (GstBaseTransform * trans, GstBuffer * inbuf,
GstBuffer * outbuf)
{
GstGLDownload *download;
GstGLBuffer *inbuf = GST_GL_BUFFER (buf);
GstBuffer *outbuf;
GstGLBuffer *gl_inbuf = GST_GL_BUFFER (inbuf);
download = GST_GL_DOWNLOAD (gst_pad_get_parent (pad));
download = GST_GL_DOWNLOAD (trans);
outbuf =
gst_buffer_new_and_alloc (gst_video_format_get_size (download->format,
inbuf->width, inbuf->height));
gst_buffer_copy_metadata (GST_BUFFER (outbuf), buf,
GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS);
gst_buffer_set_caps (GST_BUFFER (outbuf), GST_PAD_CAPS (download->srcpad));
if (download->display == NULL) {
download->display = g_object_ref (gl_inbuf->display);
} else {
g_assert (download->display == gl_inbuf->display);
}
GST_DEBUG ("downloading %p size %d",
GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
gst_gl_buffer_download (inbuf, GST_BUFFER_DATA (outbuf));
gst_gl_buffer_download (gl_inbuf, download->format, GST_BUFFER_DATA (outbuf));
gst_pad_push (download->srcpad, GST_BUFFER (outbuf));
gst_buffer_unref (buf);
gst_object_unref (download);
return GST_FLOW_OK;
}
static GstStateChangeReturn
gst_gl_download_change_state (GstElement * element, GstStateChange transition)
{
GstGLDownload *download;
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GST_DEBUG ("change state");
download = GST_GL_DOWNLOAD (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_gl_download_start (download);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_gl_download_stop (download);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}

2
sys/glsink/gstglfilter.c
View file

@ -32,8 +32,6 @@
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#define GST_GL_VIDEO_CAPS "video/x-raw-gl"
static GstStaticPadTemplate gst_gl_filter_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,

70
sys/glsink/gstglfilterexample.c
View file

@ -190,6 +190,8 @@ gst_gl_filter_example_transform (GstGLFilter * filter, GstGLBuffer * outbuf,
GstGLBuffer * inbuf)
{
//GstGLFilterExample *example = GST_GL_FILTER_EXAMPLE(filter);
int i, j;
double *vertex_x, *vertex_y;
glDisable (GL_CULL_FACE);
glEnableClientState (GL_TEXTURE_COORD_ARRAY);
@ -203,6 +205,8 @@ gst_gl_filter_example_transform (GstGLFilter * filter, GstGLBuffer * outbuf,
glColor4f (1, 0, 1, 1);
#define GAIN 0.5
/* just for fun. swap red and blue components. Doesn't work on my
* driver. */
{
const double matrix[16] = {
0, 0, 1.0, 0,
@ -218,20 +222,70 @@ gst_gl_filter_example_transform (GstGLFilter * filter, GstGLBuffer * outbuf,
glPixelTransferf (GL_POST_COLOR_MATRIX_BLUE_BIAS, (1 - GAIN) / 2);
}
/* load raster-scanning matrix */
{
const double matrix[16] = {
2.0, 0, 0, 0,
0, 2.0, 0, 0,
0, 0, 1, 0,
-1, -1, 0, 1
};
glMatrixMode (GL_MODELVIEW);
glLoadMatrixd (matrix);
}
/* load texture raster-scanning matrix */
{
double matrix[16] = {
1.0, 0, 0, 0,
0, 1.0, 0, 0,
0, 0, 1, 0,
-1, -1, 0, 1
};
matrix[0] = inbuf->width;
matrix[5] = inbuf->height;
glMatrixMode (GL_TEXTURE);
glLoadMatrixd (matrix);
}
#define N 10
#define SCALE (1.0/N)
#define NOISE() (0.1*SCALE*g_random_double_range(-1,1))
vertex_x = malloc (sizeof (double) * (N + 1) * (N + 1));
vertex_y = malloc (sizeof (double) * (N + 1) * (N + 1));
for (j = 0; j < N + 1; j++) {
for (i = 0; i < N + 1; i++) {
vertex_x[j * (N + 1) + i] = i * SCALE + NOISE ();
vertex_y[j * (N + 1) + i] = j * SCALE + NOISE ();
}
}
for (j = 0; j < N; j++) {
for (i = 0; i < N; i++) {
glBegin (GL_QUADS);
glNormal3f (0, 0, -1);
glTexCoord2f (inbuf->width, 0);
glVertex3f (0.9, -0.9, 0);
glTexCoord2f (0, 0);
glVertex3f (-1.0, -1.0, 0);
glTexCoord2f (0, inbuf->height);
glVertex3f (-1.0, 1.0, 0);
glTexCoord2f (inbuf->width, inbuf->height);
glVertex3f (1.0, 1.0, 0);
glTexCoord2f (i * SCALE, j * SCALE);
glVertex3f (vertex_x[j * (N + 1) + i], vertex_y[j * (N + 1) + i], 0);
glTexCoord2f ((i + 1) * SCALE, j * SCALE);
glVertex3f (vertex_x[j * (N + 1) + (i + 1)],
vertex_y[j * (N + 1) + (i + 1)], 0);
glTexCoord2f ((i + 1) * SCALE, (j + 1) * SCALE);
glVertex3f (vertex_x[(j + 1) * (N + 1) + (i + 1)],
vertex_y[(j + 1) * (N + 1) + (i + 1)], 0);
glTexCoord2f (i * SCALE, (j + 1) * SCALE);
glVertex3f (vertex_x[(j + 1) * (N + 1) + i],
vertex_y[(j + 1) * (N + 1) + i], 0);
glEnd ();
}
}
free (vertex_x);
free (vertex_y);
glFlush ();
glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
glMatrixMode (GL_TEXTURE);
glLoadIdentity ();
glMatrixMode (GL_COLOR);
glLoadIdentity ();
glPixelTransferf (GL_POST_COLOR_MATRIX_RED_SCALE, 1.0);

2
sys/glsink/gstgltestsrc.c
View file

@ -53,8 +53,6 @@
GST_DEBUG_CATEGORY_STATIC (gl_test_src_debug);
#define GST_CAT_DEFAULT gl_test_src_debug
#define GST_GL_VIDEO_CAPS "video/x-raw-gl,width=(int)[1,2048],height=(int)[1,2048],framerate=(fraction)[0/1,100/1],pixel_aspect_ratio=(fraction)[0/1,100/1]"
static const GstElementDetails gl_test_src_details =
GST_ELEMENT_DETAILS ("Video test source",
"Source/Video",

2
sys/glsink/gstglupload.c
View file

@ -68,8 +68,6 @@ static const GstElementDetails element_details = GST_ELEMENT_DETAILS ("FIXME",
"FIXME example filter",
"FIXME <fixme@fixme.com>");
#define GST_GL_VIDEO_CAPS "video/x-raw-gl"
static GstStaticPadTemplate gst_gl_upload_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,