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);
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;
}
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)
{
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");
{
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);
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);
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);
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");
- gst_gl_upload_perform_with_data (filter->upload, filter->in_tex_id,
- in_frame.data);
+ 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;
- }
-
- if (gst_is_gl_memory (out_frame.map[0].memory)) {
out_tex = *(guint *) out_frame.data[0];
- } else {
+ } 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");
- out_tex = filter->out_tex_id;;
+ 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;
+ }
- 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) {
}
/* 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
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);
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 ();
projects / platform / upstream / gstreamer.git / commitdiff