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gl/mem: cache the stride/unpack length for upload

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This commit is contained in:
Matthew Waters 2014-04-11 17:24:39 +10:00
parent 7a424780ce
commit b69e1f42bb
2 changed files with 76 additions and 67 deletions
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142
gst-libs/gst/gl/gstglmemory.c
View file

@ -292,7 +292,6 @@ static void
_upload_memory (GstGLContext * context, GstGLMemory * gl_mem)
{
const GstGLFuncs *gl;
guint unpack_length, n_gl_bytes;
GLenum gl_format, gl_type;
if (!GST_GL_MEMORY_FLAG_IS_SET (gl_mem, GST_GL_MEMORY_FLAG_NEED_UPLOAD)) {
@ -306,79 +305,15 @@ _upload_memory (GstGLContext * context, GstGLMemory * gl_mem)
gl_type = GL_UNSIGNED_SHORT_5_6_5;
gl_format = _gst_gl_format_from_gl_texture_type (gl_mem->tex_type);
n_gl_bytes = _gl_texture_type_n_bytes (gl_mem->tex_type);
gl_mem->tex_scaling[0] = 1.0f;
gl_mem->tex_scaling[1] = 1.0f;
unpack_length = 1;
#if GST_GL_HAVE_OPENGL || GST_GL_HAVE_GLES3
if (USING_OPENGL (context) || USING_GLES3 (context)) {
unpack_length = gl_mem->stride / n_gl_bytes;
gl->PixelStorei (GL_UNPACK_ROW_LENGTH, gl_mem->unpack_length);
}
#endif
#if GST_GL_HAVE_GLES2
if (USING_GLES2 (context)) {
guint j = 8;
while (j >= n_gl_bytes) {
/* GST_ROUND_UP_j(gl_mem->width * n_gl_bytes) */
guint round_up_j = ((gl_mem->width * n_gl_bytes) + j - 1) & ~(j - 1);
if (round_up_j == gl_mem->stride) {
GST_CAT_LOG (GST_CAT_GL_MEMORY, "Found alignment of %u based on width "
"(with plane width:%u, plane stride:%u and pixel stride:%u. "
"RU%u(%u*%u) = %u)", j, gl_mem->width, gl_mem->stride, n_gl_bytes,
j, gl_mem->width, n_gl_bytes, round_up_j);
unpack_length = j;
break;
}
j >>= 1;
}
if (j < n_gl_bytes) {
/* Failed to find a suitable alignment, try based on plane_stride and
* scale in the shader. Useful for alignments that are greater than 8.
*/
j = 8;
while (j >= n_gl_bytes) {
/* GST_ROUND_UP_j(gl_mem->stride) */
guint round_up_j = ((gl_mem->stride) + j - 1) & ~(j - 1);
if (round_up_j == gl_mem->stride) {
GST_CAT_LOG (GST_CAT_GL_MEMORY, "Found alignment of %u based on "
"stride (with plane stride:%u and pixel stride:%u. "
"RU%u(%u) = %u)", j, gl_mem->stride, n_gl_bytes, j,
gl_mem->stride, round_up_j);
unpack_length = j;
gl_mem->tex_scaling[0] =
(gfloat) (gl_mem->width * n_gl_bytes) / (gfloat) gl_mem->stride;
break;
}
j >>= 1;
}
if (j < n_gl_bytes) {
GST_CAT_ERROR
(GST_CAT_GL_MEMORY, "Failed to find matching alignment. Image may "
"look corrupted. plane width:%u, plane stride:%u and pixel "
"stride:%u", gl_mem->width, gl_mem->stride, n_gl_bytes);
}
}
}
#endif
#if GST_GL_HAVE_OPENGL || GST_GL_HAVE_GLES3
if (USING_OPENGL (context) || USING_GLES3 (context)) {
gl->PixelStorei (GL_UNPACK_ROW_LENGTH, unpack_length);
}
#endif
#if GST_GL_HAVE_GLES2
if (USING_GLES2 (context)) {
gl->PixelStorei (GL_UNPACK_ALIGNMENT, unpack_length);
gl->PixelStorei (GL_UNPACK_ALIGNMENT, gl_mem->unpack_length);
}
#endif
@ -405,6 +340,77 @@ _upload_memory (GstGLContext * context, GstGLMemory * gl_mem)
GST_GL_MEMORY_FLAG_UNSET (gl_mem, GST_GL_MEMORY_FLAG_NEED_UPLOAD);
}
static inline void
_calculate_unpack_length (GstGLMemory * gl_mem)
{
guint n_gl_bytes;
gl_mem->tex_scaling[0] = 1.0f;
gl_mem->tex_scaling[1] = 1.0f;
gl_mem->unpack_length = 1;
n_gl_bytes = _gl_texture_type_n_bytes (gl_mem->tex_type);
#if GST_GL_HAVE_OPENGL || GST_GL_HAVE_GLES3
if (USING_OPENGL (gl_mem->context) || USING_GLES3 (gl_mem->context)) {
gl_mem->unpack_length = gl_mem->stride / n_gl_bytes;
}
#endif
#if GST_GL_HAVE_GLES2
if (USING_GLES2 (gl_mem->context)) {
guint j = 8;
while (j >= n_gl_bytes) {
/* GST_ROUND_UP_j(gl_mem->width * n_gl_bytes) */
guint round_up_j = ((gl_mem->width * n_gl_bytes) + j - 1) & ~(j - 1);
if (round_up_j == gl_mem->stride) {
GST_CAT_LOG (GST_CAT_GL_MEMORY, "Found alignment of %u based on width "
"(with plane width:%u, plane stride:%u and pixel stride:%u. "
"RU%u(%u*%u) = %u)", j, gl_mem->width, gl_mem->stride, n_gl_bytes,
j, gl_mem->width, n_gl_bytes, round_up_j);
gl_mem->unpack_length = j;
break;
}
j >>= 1;
}
if (j < n_gl_bytes) {
/* Failed to find a suitable alignment, try based on plane_stride and
* scale in the shader. Useful for alignments that are greater than 8.
*/
j = 8;
while (j >= n_gl_bytes) {
/* GST_ROUND_UP_j(gl_mem->stride) */
guint round_up_j = ((gl_mem->stride) + j - 1) & ~(j - 1);
if (round_up_j == gl_mem->stride) {
GST_CAT_LOG (GST_CAT_GL_MEMORY, "Found alignment of %u based on "
"stride (with plane stride:%u and pixel stride:%u. "
"RU%u(%u) = %u)", j, gl_mem->stride, n_gl_bytes, j,
gl_mem->stride, round_up_j);
gl_mem->unpack_length = j;
gl_mem->tex_scaling[0] =
(gfloat) (gl_mem->width * n_gl_bytes) / (gfloat) gl_mem->stride;
break;
}
j >>= 1;
}
if (j < n_gl_bytes) {
GST_CAT_ERROR
(GST_CAT_GL_MEMORY, "Failed to find matching alignment. Image may "
"look corrupted. plane width:%u, plane stride:%u and pixel "
"stride:%u", gl_mem->width, gl_mem->stride, n_gl_bytes);
}
}
}
#endif
}
static void
_download_memory (GstGLContext * context, GstGLMemory * gl_mem)
{
@ -487,6 +493,8 @@ _gl_mem_init (GstGLMemory * mem, GstAllocator * allocator, GstMemory * parent,
mem->data_wrapped = FALSE;
mem->texture_wrapped = FALSE;
_calculate_unpack_length (mem);
GST_CAT_DEBUG (GST_CAT_GL_MEMORY, "new GL texture memory:%p format:%u "
"dimensions:%ux%u", mem, tex_type, width, height);
}

1
gst-libs/gst/gl/gstglmemory.h
View file

@ -99,6 +99,7 @@ struct _GstGLMemory
GDestroyNotify notify;
gpointer user_data;
guint pbo;
guint unpack_length;
};
/**