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[594/906] filter: update for up/download API changes and scaling fixes

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This commit is contained in:
Matthew Waters 2012-09-25 17:59:27 +10:00 committed by Tim-Philipp Müller
parent 09b60b563c
commit 2a8de21658
2 changed files with 490 additions and 66 deletions
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546
gst-libs/gst/gl/gstglfilter.c
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@ -66,6 +66,8 @@ static gboolean gst_gl_filter_query (GstBaseTransform * trans,
GstPadDirection direction, GstQuery * query);
static GstCaps *gst_gl_filter_transform_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps, GstCaps * filter);
static GstCaps *gst_gl_filter_fixate_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
static void gst_gl_filter_reset (GstGLFilter * filter);
static gboolean gst_gl_filter_start (GstBaseTransform * bt);
static gboolean gst_gl_filter_stop (GstBaseTransform * bt);
@ -98,6 +100,7 @@ gst_gl_filter_class_init (GstGLFilterClass * klass)
GST_BASE_TRANSFORM_CLASS (klass)->transform_caps =
gst_gl_filter_transform_caps;
GST_BASE_TRANSFORM_CLASS (klass)->fixate_caps = gst_gl_filter_fixate_caps;
GST_BASE_TRANSFORM_CLASS (klass)->transform = gst_gl_filter_transform;
GST_BASE_TRANSFORM_CLASS (klass)->query = gst_gl_filter_query;
GST_BASE_TRANSFORM_CLASS (klass)->start = gst_gl_filter_start;
@ -297,6 +300,334 @@ gst_gl_filter_stop_gl (GstGLDisplay * display, gpointer data)
filter_class->display_reset_cb (filter);
}
static GstCaps *
gst_gl_filter_fixate_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstStructure *ins, *outs;
const GValue *from_par, *to_par;
GValue fpar = { 0, }, tpar = {
0,};
othercaps = gst_caps_truncate (othercaps);
othercaps = gst_caps_make_writable (othercaps);
GST_DEBUG_OBJECT (bt, "trying to fixate othercaps %" GST_PTR_FORMAT
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
ins = gst_caps_get_structure (caps, 0);
outs = gst_caps_get_structure (othercaps, 0);
from_par = gst_structure_get_value (ins, "pixel-aspect-ratio");
to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
/* If we're fixating from the sinkpad we always set the PAR and
* assume that missing PAR on the sinkpad means 1/1 and
* missing PAR on the srcpad means undefined
*/
if (direction == GST_PAD_SINK) {
if (!from_par) {
g_value_init (&fpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&fpar, 1, 1);
from_par = &fpar;
}
if (!to_par) {
g_value_init (&tpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&tpar, 1, 1);
to_par = &tpar;
}
} else {
if (!to_par) {
g_value_init (&tpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&tpar, 1, 1);
to_par = &tpar;
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
NULL);
}
if (!from_par) {
g_value_init (&fpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&fpar, 1, 1);
from_par = &fpar;
}
}
/* we have both PAR but they might not be fixated */
{
gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
gint w = 0, h = 0;
gint from_dar_n, from_dar_d;
gint num, den;
/* from_par should be fixed */
g_return_val_if_fail (gst_value_is_fixed (from_par), othercaps);
from_par_n = gst_value_get_fraction_numerator (from_par);
from_par_d = gst_value_get_fraction_denominator (from_par);
gst_structure_get_int (ins, "width", &from_w);
gst_structure_get_int (ins, "height", &from_h);
gst_structure_get_int (outs, "width", &w);
gst_structure_get_int (outs, "height", &h);
/* if both width and height are already fixed, we can't do anything
* about it anymore */
if (w && h) {
gint n = 1, d = 1;
GST_DEBUG_OBJECT (bt, "dimensions already set to %dx%d, not fixating",
w, h);
if (!gst_value_is_fixed (to_par)) {
GST_DEBUG_OBJECT (bt, "fixating to_par to %dx%d", n, d);
if (gst_structure_has_field (outs, "pixel-aspect-ratio"))
gst_structure_fixate_field_nearest_fraction (outs,
"pixel-aspect-ratio", 1, 1);
else if (n != d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1, 1, NULL);
}
goto done;
}
/* Calculate input DAR */
if (!gst_util_fraction_multiply (from_w, from_h, from_par_n, from_par_d,
&from_dar_n, &from_dar_d)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
GST_DEBUG_OBJECT (bt, "Input DAR is %d/%d", from_dar_n, from_dar_d);
/* If either width or height are fixed there's not much we
* can do either except choosing a height or width and PAR
* that matches the DAR as good as possible
*/
if (h) {
gint num, den;
GST_DEBUG_OBJECT (bt, "height is fixed (%d)", h);
if (!gst_value_is_fixed (to_par)) {
gst_value_set_fraction (&tpar, 1, 1);
}
/* PAR is fixed, choose the height that is nearest to the
* height with the same DAR */
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
GST_DEBUG_OBJECT (bt, "PAR is fixed %d/%d", to_par_n, to_par_d);
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
to_par_n, &num, &den)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
w = (guint) gst_util_uint64_scale_int (h, num, den);
gst_structure_fixate_field_nearest_int (outs, "width", w);
goto done;
} else if (w) {
gint num, den;
GST_DEBUG_OBJECT (bt, "width is fixed (%d)", w);
if (!gst_value_is_fixed (to_par)) {
gst_value_set_fraction (&tpar, 1, 1);
}
/* PAR is fixed, choose the height that is nearest to the
* height with the same DAR */
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
GST_DEBUG_OBJECT (bt, "PAR is fixed %d/%d", to_par_n, to_par_d);
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
to_par_n, &num, &den)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
h = (guint) gst_util_uint64_scale_int (w, den, num);
gst_structure_fixate_field_nearest_int (outs, "height", h);
goto done;
} else if (gst_value_is_fixed (to_par)) {
GstStructure *tmp;
gint set_h, set_w, f_h, f_w;
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
/* Calculate scale factor for the PAR change */
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_n,
to_par_d, &num, &den)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
/* Try to keep the input height */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
gst_structure_get_int (tmp, "height", &set_h);
/* This might have failed but try to scale the width
* to keep the DAR nonetheless */
w = (guint) gst_util_uint64_scale_int (set_h, num, den);
gst_structure_fixate_field_nearest_int (tmp, "width", w);
gst_structure_get_int (tmp, "width", &set_w);
gst_structure_free (tmp);
/* We kept the DAR and the height is nearest to the original height */
if (set_w == w) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
goto done;
}
f_h = set_h;
f_w = set_w;
/* If the former failed, try to keep the input width at least */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
gst_structure_get_int (tmp, "width", &set_w);
/* This might have failed but try to scale the width
* to keep the DAR nonetheless */
h = (guint) gst_util_uint64_scale_int (set_w, den, num);
gst_structure_fixate_field_nearest_int (tmp, "height", h);
gst_structure_get_int (tmp, "height", &set_h);
gst_structure_free (tmp);
/* We kept the DAR and the width is nearest to the original width */
if (set_h == h) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
goto done;
}
/* If all this failed, keep the height that was nearest to the orignal
* height and the nearest possible width. This changes the DAR but
* there's not much else to do here.
*/
gst_structure_set (outs, "width", G_TYPE_INT, f_w, "height", G_TYPE_INT,
f_h, NULL);
goto done;
} else {
GstStructure *tmp;
gint set_h, set_w, set_par_n, set_par_d, tmp2;
/* width, height and PAR are not fixed */
/* First try to keep the height and width as good as possible
* and scale PAR */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
gst_structure_get_int (tmp, "height", &set_h);
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
gst_structure_get_int (tmp, "width", &set_w);
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, set_w,
&to_par_n, &to_par_d)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
to_par_n, to_par_d);
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
&set_par_d);
gst_structure_free (tmp);
if (set_par_n == to_par_n && set_par_d == to_par_d) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
}
/* Otherwise try to scale width to keep the DAR with the set
* PAR and height */
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
set_par_n, &num, &den)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
w = (guint) gst_util_uint64_scale_int (set_h, num, den);
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "width", w);
gst_structure_get_int (tmp, "width", &tmp2);
gst_structure_free (tmp);
if (tmp2 == w) {
gst_structure_set (outs, "width", G_TYPE_INT, tmp2, "height",
G_TYPE_INT, set_h, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
}
/* ... or try the same with the height */
h = (guint) gst_util_uint64_scale_int (set_w, den, num);
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "height", h);
gst_structure_get_int (tmp, "height", &tmp2);
gst_structure_free (tmp);
if (tmp2 == h) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, tmp2, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
}
/* If all fails we can't keep the DAR and take the nearest values
* for everything from the first try */
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
}
}
done:
othercaps = gst_caps_fixate (othercaps);
GST_DEBUG_OBJECT (bt, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
if (from_par == &fpar)
g_value_unset (&fpar);
if (to_par == &tpar)
g_value_unset (&tpar);
return othercaps;
}
static GstCaps *
gst_gl_filter_transform_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
@ -319,9 +650,9 @@ gst_gl_filter_transform_caps (GstBaseTransform * bt,
structure = gst_structure_copy (structure);
// gst_structure_set (structure,
// "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
// "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
gst_structure_set (structure,
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
gst_structure_remove_field (structure, "format");
@ -367,6 +698,7 @@ gst_gl_filter_set_caps (GstBaseTransform * bt, GstCaps * incaps,
{
GstGLFilter *filter;
GstGLFilterClass *filter_class;
guint in_width, in_height, out_width, out_height;
filter = GST_GL_FILTER (bt);
filter_class = GST_GL_FILTER_GET_CLASS (filter);
@ -376,42 +708,21 @@ gst_gl_filter_set_caps (GstBaseTransform * bt, GstCaps * incaps,
if (!gst_video_info_from_caps (&filter->out_info, outcaps))
goto wrong_caps;
in_width = GST_VIDEO_INFO_WIDTH (&filter->in_info);
in_height = GST_VIDEO_INFO_HEIGHT (&filter->in_info);
out_width = GST_VIDEO_INFO_WIDTH (&filter->out_info);
out_height = GST_VIDEO_INFO_HEIGHT (&filter->out_info);
//blocking call, generate a FBO
if (!gst_gl_display_gen_fbo (filter->display,
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info),
if (!gst_gl_display_gen_fbo (filter->display, out_width, out_height,
&filter->fbo, &filter->depthbuffer))
goto display_error;
gst_gl_display_gen_texture (filter->display, &filter->in_tex_id,
GST_VIDEO_INFO_FORMAT (&filter->out_info),
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
GST_VIDEO_FORMAT_RGBA, in_width, in_height);
gst_gl_display_gen_texture (filter->display, &filter->out_tex_id,
GST_VIDEO_INFO_FORMAT (&filter->out_info),
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
filter->download = gst_gl_display_find_download (filter->display,
GST_VIDEO_INFO_FORMAT (&filter->out_info),
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
gst_gl_download_init_format (filter->download,
GST_VIDEO_INFO_FORMAT (&filter->out_info),
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
filter->upload = gst_gl_display_find_upload (filter->display,
GST_VIDEO_INFO_FORMAT (&filter->out_info),
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
gst_gl_upload_init_format (filter->upload,
GST_VIDEO_INFO_FORMAT (&filter->out_info),
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
GST_VIDEO_FORMAT_RGBA, out_width, out_height);
if (filter_class->display_init_cb != NULL) {
gst_gl_display_thread_add (filter->display, gst_gl_filter_start_gl, filter);
@ -579,7 +890,7 @@ gst_gl_filter_filter_texture (GstGLFilter * filter, GstBuffer * inbuf,
GstVideoFrame in_frame;
GstVideoFrame out_frame;
guint in_tex, out_tex;
gboolean ret, out_gl_wrapped = FALSE;
gboolean ret, in_gl_wrapped, out_gl_wrapped;
filter_class = GST_GL_FILTER_GET_CLASS (filter);
@ -593,29 +904,93 @@ gst_gl_filter_filter_texture (GstGLFilter * filter, GstBuffer * inbuf,
return FALSE;
}
if (gst_is_gl_memory (in_frame.map[0].memory)) {
in_gl_wrapped = !gst_is_gl_memory (in_frame.map[0].memory);
out_gl_wrapped = !gst_is_gl_memory (out_frame.map[0].memory);
if (!in_gl_wrapped && !out_gl_wrapped) { /* both GL */
in_tex = *(guint *) in_frame.data[0];
} else {
out_tex = *(guint *) out_frame.data[0];
} else if (in_gl_wrapped && !out_gl_wrapped) { /* input: non-GL, output: GL */
GST_INFO ("Input Buffer does not contain correct meta, "
"attempting to wrap for upload");
if (!filter->upload) {
filter->upload = gst_gl_display_find_upload (filter->display,
GST_VIDEO_FRAME_FORMAT (&in_frame),
GST_VIDEO_FRAME_WIDTH (&in_frame),
GST_VIDEO_FRAME_HEIGHT (&in_frame),
GST_VIDEO_FRAME_WIDTH (&out_frame),
GST_VIDEO_FRAME_HEIGHT (&out_frame));
gst_gl_upload_init_format (filter->upload,
GST_VIDEO_FRAME_FORMAT (&in_frame),
GST_VIDEO_FRAME_WIDTH (&in_frame),
GST_VIDEO_FRAME_HEIGHT (&in_frame),
GST_VIDEO_FRAME_WIDTH (&out_frame),
GST_VIDEO_FRAME_HEIGHT (&out_frame));
}
in_tex = filter->in_tex_id;
out_tex = *(guint *) out_frame.data[0];
} else if (!in_gl_wrapped && out_gl_wrapped) { /* input: GL, output: non-GL */
GST_INFO ("Output Buffer does not contain correct memory, "
"attempting to wrap for download");
if (!filter->download) {
filter->download = gst_gl_display_find_download (filter->display,
GST_VIDEO_FRAME_FORMAT (&out_frame),
GST_VIDEO_FRAME_WIDTH (&out_frame),
GST_VIDEO_FRAME_HEIGHT (&out_frame));
gst_gl_download_init_format (filter->download,
GST_VIDEO_FRAME_FORMAT (&out_frame),
GST_VIDEO_FRAME_WIDTH (&out_frame),
GST_VIDEO_FRAME_HEIGHT (&out_frame));
}
in_tex = *(guint *) in_frame.data[0];
out_tex = filter->out_tex_id;
} else { /* both non-GL */
if (!filter->upload) {
filter->upload = gst_gl_display_find_upload (filter->display,
GST_VIDEO_FRAME_FORMAT (&in_frame),
GST_VIDEO_FRAME_WIDTH (&in_frame),
GST_VIDEO_FRAME_HEIGHT (&in_frame),
GST_VIDEO_FRAME_WIDTH (&out_frame),
GST_VIDEO_FRAME_HEIGHT (&out_frame));
gst_gl_upload_init_format (filter->upload,
GST_VIDEO_FRAME_FORMAT (&in_frame),
GST_VIDEO_FRAME_WIDTH (&in_frame),
GST_VIDEO_FRAME_HEIGHT (&in_frame),
GST_VIDEO_FRAME_WIDTH (&out_frame),
GST_VIDEO_FRAME_HEIGHT (&out_frame));
}
if (!filter->download) {
filter->download = gst_gl_display_find_download (filter->display,
GST_VIDEO_FRAME_FORMAT (&out_frame),
GST_VIDEO_FRAME_WIDTH (&out_frame),
GST_VIDEO_FRAME_HEIGHT (&out_frame));
gst_gl_download_init_format (filter->download,
GST_VIDEO_FRAME_FORMAT (&out_frame),
GST_VIDEO_FRAME_WIDTH (&out_frame),
GST_VIDEO_FRAME_HEIGHT (&out_frame));
}
gst_gl_upload_perform_with_data (filter->upload, filter->in_tex_id,
in_frame.data);
out_tex = filter->out_tex_id;
in_tex = filter->in_tex_id;
}
if (gst_is_gl_memory (out_frame.map[0].memory)) {
out_tex = *(guint *) out_frame.data[0];
} else {
GST_INFO ("Output Buffer does not contain correct memory, "
"attempting to wrap for download");
out_tex = filter->out_tex_id;;
out_gl_wrapped = TRUE;
if (in_gl_wrapped) {
gst_gl_upload_perform_with_data (filter->upload, in_tex, in_frame.data);
}
g_assert (filter_class->filter_texture);
ret = filter_class->filter_texture (filter, in_tex, out_tex);
if (out_gl_wrapped) {
@ -650,19 +1025,43 @@ gst_gl_filter_transform (GstBaseTransform * bt, GstBuffer * inbuf,
}
/* convenience functions to simplify filter development */
/**
* gst_gl_filter_render_to_target:
* @filter: a #GstGLFilter
* @resize: whether to automatically resize the texture between the input size
* and the output size
* @input: the input texture
* @target: the output texture
* @func: the function to transform @input into @output. called with @data
* @data: the data associated with @func
*
* Transforms @input into @output using @func on through FBO. @resize should
* only ever be %TRUE whenever @input is the input texture of @filter.
*/
void
gst_gl_filter_render_to_target (GstGLFilter * filter,
gst_gl_filter_render_to_target (GstGLFilter * filter, gboolean resize,
GLuint input, GLuint target, GLCB func, gpointer data)
{
guint in_width, in_height, out_width, out_height;
out_width = GST_VIDEO_INFO_WIDTH (&filter->out_info);
out_height = GST_VIDEO_INFO_HEIGHT (&filter->out_info);
if (resize) {
in_width = GST_VIDEO_INFO_WIDTH (&filter->in_info);
in_height = GST_VIDEO_INFO_HEIGHT (&filter->in_info);
} else {
in_width = out_width;
in_height = out_height;
}
GST_LOG ("rendering to target. in:%ux%u out:%ux%u", in_width, in_height,
out_width, out_height);
gst_gl_display_use_fbo (filter->display,
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info),
out_width, out_height,
filter->fbo, filter->depthbuffer, target,
func, GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info), input, 0,
GST_VIDEO_INFO_WIDTH (&filter->out_info), 0,
GST_VIDEO_INFO_HEIGHT (&filter->out_info),
GST_GL_DISPLAY_PROJECTION_ORTHO2D, data);
func, in_width, in_height, input, 0,
in_width, 0, in_height, GST_GL_DISPLAY_PROJECTION_ORTHO2D, data);
}
#ifndef OPENGL_ES2
@ -683,23 +1082,49 @@ _draw_with_shader_cb (gint width, gint height, guint texture, gpointer stuff)
gst_gl_shader_set_uniform_1i (filter->default_shader, "tex", 1);
gst_gl_filter_draw_texture (filter, texture);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
/**
* gst_gl_filter_render_to_target_with_shader:
* @filter: a #GstGLFilter
* @resize: whether to automatically resize the texture between the input size
* and the output size
* @input: the input texture
* @target: the output texture
* @shader: the shader to use.
*
* Transforms @input into @output using @shader on through FBO. @resize should
* only ever be %TRUE whenever @input is the input texture of @filter.
*
* See also: #gst_gl_filter_render_to_target()
*/
/* attach target to a FBO, use shader, pass input as "tex" uniform to
* the shader, render input to a quad */
void
gst_gl_filter_render_to_target_with_shader (GstGLFilter * filter,
GLuint input, GLuint target, GstGLShader * shader)
gboolean resize, GLuint input, GLuint target, GstGLShader * shader)
{
filter->default_shader = shader;
gst_gl_filter_render_to_target (filter, input, target, _draw_with_shader_cb,
filter);
gst_gl_filter_render_to_target (filter, resize, input, target,
_draw_with_shader_cb, filter);
}
/**
* gst_gl_filter_draw_texture:
* @filter: a #GstGLFilter
* @texture: the texture to draw
* @width: width of @texture
* @height: height of texture
*
* Draws @texture into the OpenGL scene at the specified @width and @height.
*/
void
gst_gl_filter_draw_texture (GstGLFilter * filter, GLuint texture)
gst_gl_filter_draw_texture (GstGLFilter * filter, GLuint texture,
guint width, guint height)
{
GST_DEBUG ("drawing texture:%u dimensions:%ux%u", texture, width, height);
glActiveTexture (GL_TEXTURE0);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
@ -708,12 +1133,11 @@ gst_gl_filter_draw_texture (GstGLFilter * filter, GLuint texture)
glTexCoord2f (0.0, 0.0);
glVertex2f (-1.0, -1.0);
glTexCoord2f ((gfloat) GST_VIDEO_INFO_WIDTH (&filter->out_info), 0.0);
glTexCoord2f ((gfloat) width, 0.0);
glVertex2f (1.0, -1.0);
glTexCoord2f ((gfloat) GST_VIDEO_INFO_WIDTH (&filter->out_info),
(gfloat) GST_VIDEO_INFO_HEIGHT (&filter->out_info));
glTexCoord2f ((gfloat) width, (gfloat) height);
glVertex2f (1.0, 1.0);
glTexCoord2f (0.0, (gfloat) GST_VIDEO_INFO_HEIGHT (&filter->out_info));
glTexCoord2f (0.0, (gfloat) height);
glVertex2f (-1.0, 1.0);
glEnd ();

10
gst-libs/gst/gl/gstglfilter.h
View file

@ -101,15 +101,15 @@ gboolean gst_gl_filter_filter_texture (GstGLFilter * filter, GstBuffer * inbuf,
GstBuffer * outbuf);
void
gst_gl_filter_render_to_target (GstGLFilter *filter,
GLuint input, GLuint target,
GLCB func, gpointer data);
gst_gl_filter_render_to_target (GstGLFilter *filter, gboolean resize, GLuint input,
GLuint target, GLCB func, gpointer data);
#ifndef OPENGL_ES2
void
gst_gl_filter_render_to_target_with_shader (GstGLFilter * filter,
gst_gl_filter_render_to_target_with_shader (GstGLFilter * filter, gboolean resize,
GLuint input, GLuint target, GstGLShader *shader);
void gst_gl_filter_draw_texture (GstGLFilter *filter, GLuint texture);
void gst_gl_filter_draw_texture (GstGLFilter *filter, GLuint texture, guint width, guint height);
#endif
G_END_DECLS