static void
_download_transfer (GstGLContext * context, GstGLMemoryPBO * gl_mem)
{
GstGLBaseMemory *mem = (GstGLBaseMemory *) gl_mem;
g_mutex_lock (&mem->lock);
if (_read_pixels_to_pbo (gl_mem))
GST_CAT_TRACE (GST_CAT_GL_MEMORY, "optimistic download of texture %u "
"using pbo %u", gl_mem->mem.tex_id, gl_mem->pbo->id);
g_mutex_unlock (&mem->lock);
}
static void
_download_transfer (GstGLContext * context, GstGLMemoryPBO * gl_mem)
{
GstGLBaseMemory *mem = (GstGLBaseMemory *) gl_mem;
g_mutex_lock (&mem->lock);
if (_read_pixels_to_pbo (gl_mem)) {
GST_CAT_TRACE (GST_CAT_GL_MEMORY, "optimistic download of texture %u "
"using pbo %u", gl_mem->mem.tex_id, gl_mem->pbo->id);
GST_MEMORY_FLAG_UNSET (gl_mem, GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD);
}
g_mutex_unlock (&mem->lock);
}
static gpointer
_pbo_download_transfer (GstGLMemoryPBO * gl_mem, GstMapInfo * info, gsize size)
{
GstMapInfo *pbo_info;
gl_mem->pbo->target = GL_PIXEL_PACK_BUFFER;
/* texture -> pbo */
if (info->flags & GST_MAP_READ
&& GST_MEMORY_FLAG_IS_SET (gl_mem,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD)) {
GstMapInfo info;
GST_CAT_TRACE (GST_CAT_GL_MEMORY,
"attempting download of texture %u " "using pbo %u", gl_mem->mem.tex_id,
gl_mem->pbo->id);
if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), &info,
GST_MAP_WRITE | GST_MAP_GL)) {
GST_CAT_WARNING (GST_CAT_GL_MEMORY, "Failed to write to PBO");
return NULL;
}
if (!_read_pixels_to_pbo (gl_mem)) {
gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &info);
return NULL;
}
gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &info);
}
pbo_info = g_new0 (GstMapInfo, 1);
/* pbo -> data */
/* get a cpu accessible mapping from the pbo */
if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), pbo_info, info->flags)) {
GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Failed to map pbo");
g_free (pbo_info);
return NULL;
}
info->user_data[0] = pbo_info;
return pbo_info->data;
}
static void
_gl_mem_copy_thread (GstGLContext * context, gpointer data)
{
const GstGLFuncs *gl;
GstGLMemoryPBOCopyParams *copy_params;
GstGLMemoryPBO *src;
guint tex_id;
guint out_tex_target;
GLuint fboId;
gsize out_width, out_height, out_stride;
GLuint out_gl_format, out_gl_type;
GLuint in_gl_format, in_gl_type;
gsize in_size, out_size;
copy_params = (GstGLMemoryPBOCopyParams *) data;
src = copy_params->src;
tex_id = copy_params->tex_id;
out_tex_target = gst_gl_texture_target_to_gl (copy_params->tex_target);
out_width = copy_params->out_width;
out_height = copy_params->out_height;
out_stride = copy_params->out_stride;
gl = context->gl_vtable;
out_gl_format = gst_gl_format_from_gl_texture_type (copy_params->out_format);
out_gl_type = GL_UNSIGNED_BYTE;
if (copy_params->out_format == GST_VIDEO_GL_TEXTURE_TYPE_RGB16)
out_gl_type = GL_UNSIGNED_SHORT_5_6_5;
in_gl_format = gst_gl_format_from_gl_texture_type (src->mem.tex_type);
in_gl_type = GL_UNSIGNED_BYTE;
if (src->mem.tex_type == GST_VIDEO_GL_TEXTURE_TYPE_RGB16)
in_gl_type = GL_UNSIGNED_SHORT_5_6_5;
if (!gl->GenFramebuffers) {
gst_gl_context_set_error (context,
"Context, EXT_framebuffer_object not supported");
goto error;
}
in_size = GL_MEM_HEIGHT (src) * GL_MEM_STRIDE (src);
out_size = out_height * out_stride;
if (copy_params->respecify) {
if (in_size != out_size) {
GST_ERROR ("Cannot copy between textures with backing data of different"
"sizes. input %" G_GSIZE_FORMAT " output %" G_GSIZE_FORMAT, in_size,
out_size);
goto error;
}
}
if (!tex_id) {
guint internal_format;
guint out_gl_type;
out_gl_type = GL_UNSIGNED_BYTE;
if (copy_params->out_format == GST_VIDEO_GL_TEXTURE_TYPE_RGB16)
out_gl_type = GL_UNSIGNED_SHORT_5_6_5;
internal_format =
gst_gl_sized_gl_format_from_gl_format_type (context, out_gl_format,
out_gl_type);
tex_id =
_new_texture (context, out_tex_target,
internal_format, out_gl_format, out_gl_type, copy_params->out_width,
copy_params->out_height);
}
if (!tex_id) {
GST_WARNING ("Could not create GL texture with context:%p", context);
}
GST_LOG ("copying memory %p, tex %u into texture %i",
src, src->mem.tex_id, tex_id);
/* FIXME: try and avoid creating and destroying fbo's every copy... */
/* create a framebuffer object */
gl->GenFramebuffers (1, &fboId);
gl->BindFramebuffer (GL_FRAMEBUFFER, fboId);
gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
gst_gl_texture_target_to_gl (src->mem.tex_target), src->mem.tex_id, 0);
// if (!gst_gl_context_check_framebuffer_status (src->mem.mem.context))
// goto fbo_error;
gl->BindTexture (out_tex_target, tex_id);
if (copy_params->respecify) {
GstMapInfo pbo_info;
if (!gl->GenBuffers || !src->pbo) {
gst_gl_context_set_error (context, "Cannot reinterpret texture contents "
"without pixel buffer objects");
gl->BindTexture (out_tex_target, 0);
goto fbo_error;
}
if (gst_gl_context_get_gl_api (context) & GST_GL_API_GLES2
&& (in_gl_format != GL_RGBA || in_gl_type != GL_UNSIGNED_BYTE)) {
gst_gl_context_set_error (context, "Cannot copy non RGBA/UNSIGNED_BYTE "
"textures on GLES2");
gl->BindTexture (out_tex_target, 0);
goto fbo_error;
}
GST_TRACE ("copying texture data with size of %u*%u*%u",
gst_gl_format_type_n_bytes (in_gl_format, in_gl_type),
src->mem.tex_width, GL_MEM_HEIGHT (src));
/* copy tex */
_read_pixels_to_pbo (src);
src->pbo->target = GL_PIXEL_UNPACK_BUFFER;
if (!gst_memory_map (GST_MEMORY_CAST (src->pbo), &pbo_info,
GST_MAP_READ | GST_MAP_GL)) {
GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Failed to map pbo for reading");
goto fbo_error;
}
gl->TexSubImage2D (out_tex_target, 0, 0, 0, out_width, out_height,
out_gl_format, out_gl_type, 0);
gst_memory_unmap (GST_MEMORY_CAST (src->pbo), &pbo_info);
} else { /* different sizes */
gst_gl_memory_copy_teximage (GST_GL_MEMORY_CAST (src),
tex_id, copy_params->tex_target, copy_params->out_format, out_width,
out_height);
}
gl->BindTexture (out_tex_target, 0);
gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
gl->DeleteFramebuffers (1, &fboId);
copy_params->tex_id = tex_id;
copy_params->result = TRUE;
return;
/* ERRORS */
fbo_error:
{
gl->DeleteFramebuffers (1, &fboId);
copy_params->tex_id = 0;
copy_params->result = FALSE;
return;
}
error:
{
copy_params->result = FALSE;
return;
}
}
