gstreamer/gst-libs/gst/gl/gstgluploadmeta.c
Matthew Waters 900bcea9de glmemory: implement on top of glbasebuffer
Provides convenient access to PBO usage.

Currently texture updates are coupled tightly to data transfers.
2017-12-09 19:32:04 +00:00

380 lines
11 KiB
C

/*
* GStreamer
* Copyright (C) 2012-2014 Matthew Waters <ystree00@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include "gl.h"
#include "gstgluploadmeta.h"
/**
* SECTION:gstgluploadmeta
* @short_description: an object that provides #GstVideoGLTextureUploadMeta
* @see_also: #GstGLUpload, #GstGLMemory
*
* #GstGLUploadMeta is an object that uploads data from system memory into GL textures.
*
* A #GstGLUpload can be created with gst_gl_upload_new()
*/
#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
#define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
#define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))
#define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))
#define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
/* *INDENT-OFF* */
struct _GstGLUploadMetaPrivate
{
GstBuffer *buffer;
gboolean initted;
GstGLMemory *in_tex[GST_VIDEO_MAX_PLANES];
GstGLMemory *out_tex[GST_VIDEO_MAX_PLANES];
};
GST_DEBUG_CATEGORY_STATIC (gst_gl_upload_meta_debug);
#define GST_CAT_DEFAULT gst_gl_upload_meta_debug
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_INIT (gst_gl_upload_meta_debug, "gluploadmeta", 0, "uploadmeta");
G_DEFINE_TYPE_WITH_CODE (GstGLUploadMeta, gst_gl_upload_meta, GST_TYPE_OBJECT, DEBUG_INIT);
static void gst_gl_upload_meta_finalize (GObject * object);
static void gst_gl_upload_meta_reset (GstGLUploadMeta * upload);
#define GST_GL_UPLOAD_META_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
GST_TYPE_GL_UPLOAD_META, GstGLUploadMetaPrivate))
static void
gst_gl_upload_meta_class_init (GstGLUploadMetaClass * klass)
{
g_type_class_add_private (klass, sizeof (GstGLUploadMetaPrivate));
G_OBJECT_CLASS (klass)->finalize = gst_gl_upload_meta_finalize;
}
static void
gst_gl_upload_meta_init (GstGLUploadMeta * upload)
{
upload->priv = GST_GL_UPLOAD_META_GET_PRIVATE (upload);
upload->context = NULL;
gst_video_info_set_format (&upload->info, GST_VIDEO_FORMAT_ENCODED, 0, 0);
}
/**
* gst_gl_upload_meta_new:
* @context: a #GstGLContext
*
* Returns: a new #GstGLUploadMeta object
*/
GstGLUploadMeta *
gst_gl_upload_meta_new (GstGLContext * context)
{
GstGLUploadMeta *upload;
upload = g_object_new (GST_TYPE_GL_UPLOAD_META, NULL);
upload->context = gst_object_ref (context);
GST_DEBUG_OBJECT (upload, "Created upload for context %"GST_PTR_FORMAT, upload->context);
return upload;
}
static void
gst_gl_upload_meta_finalize (GObject * object)
{
GstGLUploadMeta *upload;
GST_DEBUG_OBJECT (object, "Finalizing");
upload = GST_GL_UPLOAD_META (object);
gst_gl_upload_meta_reset (upload);
if (upload->context) {
gst_object_unref (upload->context);
upload->context = NULL;
}
G_OBJECT_CLASS (gst_gl_upload_meta_parent_class)->finalize (object);
}
static void
gst_gl_upload_meta_reset (GstGLUploadMeta * upload)
{
guint i;
for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
if (upload->priv->out_tex[i]) {
gst_memory_unref ((GstMemory *) upload->priv->out_tex[i]);
upload->priv->out_tex[i] = NULL;
}
}
for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
if (upload->priv->in_tex[i]) {
gst_memory_unref ((GstMemory *) upload->priv->in_tex[i]);
upload->priv->in_tex[i] = NULL;
}
}
}
static void
_gst_gl_upload_meta_set_format_unlocked (GstGLUploadMeta * upload,
GstVideoInfo *info)
{
g_return_if_fail (upload != NULL);
g_return_if_fail (GST_VIDEO_INFO_FORMAT (info) !=
GST_VIDEO_FORMAT_UNKNOWN);
g_return_if_fail (GST_VIDEO_INFO_FORMAT (info) !=
GST_VIDEO_FORMAT_ENCODED);
if (gst_video_info_is_equal (&upload->info, info))
return;
gst_gl_upload_meta_reset (upload);
upload->info = *info;
upload->priv->initted = FALSE;
}
/**
* gst_gl_upload_meta_set_format:
* @upload: a #GstGLUpload
* @info: input #GstVideoInfo
*
* Initializes @upload with the information required for upload.
*/
void
gst_gl_upload_meta_set_format (GstGLUploadMeta * upload, GstVideoInfo * info)
{
GST_OBJECT_LOCK (upload);
_gst_gl_upload_meta_set_format_unlocked (upload, info);
GST_OBJECT_UNLOCK (upload);
}
/**
* gst_gl_upload_meta_get_format:
* @upload: a #GstGLUpload
*
* Returns: (transfer none): The #GstVideoInfo set by
* gst_gl_upload_meta_set_format()
*/
GstVideoInfo *
gst_gl_upload_meta_get_format (GstGLUploadMeta * upload)
{
GstVideoInfo *ret;
GST_OBJECT_LOCK (upload);
ret = &upload->info;
GST_OBJECT_LOCK (upload);
return ret;
}
static gboolean
_perform_with_gl_memory (GstGLUploadMeta * upload, GstVideoGLTextureUploadMeta *
meta, guint texture_id[4])
{
gboolean res = TRUE;
gint i;
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&upload->info); i++) {
GstGLMemory *in_mem = upload->priv->in_tex[i];
if (GST_MEMORY_FLAG_IS_SET (in_mem, GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD)) {
GstMapInfo map_info;
guint tex_id;
tex_id = in_mem->tex_id;
in_mem->tex_id = texture_id[i];
if (!gst_memory_map ((GstMemory *) in_mem, &map_info, GST_MAP_READ | GST_MAP_GL)) {
GST_WARNING_OBJECT (upload, "Failed to map GL memory");
res = FALSE;
}
gst_memory_unmap ((GstMemory *) in_mem, &map_info);
in_mem->tex_id = tex_id;
GST_MINI_OBJECT_FLAG_SET (in_mem, GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD);
} else {
GstGLMemory *out_mem;
gint mem_width, mem_height;
if (!upload->priv->out_tex[i]) {
/* the GL upload meta creates GL_TEXTURE_2D textures */
upload->priv->out_tex[i] = gst_gl_memory_wrapped_texture (upload->context,
texture_id[i], GL_TEXTURE_2D, &upload->info, i, NULL, NULL, NULL);
}
out_mem = upload->priv->out_tex[i];
if (out_mem->tex_id != texture_id[i]) {
out_mem->tex_id = texture_id[i];
GST_MINI_OBJECT_FLAG_SET (out_mem, GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD);
}
mem_width = gst_gl_memory_get_texture_width (out_mem);
mem_height = gst_gl_memory_get_texture_height (out_mem);
if (!(res = gst_gl_memory_copy_into_texture (in_mem, out_mem->tex_id,
out_mem->tex_type, mem_width, mem_height,
GST_VIDEO_INFO_PLANE_STRIDE (&out_mem->info, out_mem->plane),
FALSE)))
break;
}
}
return res;
}
static gboolean
_perform_with_data_unlocked (GstGLUploadMeta * upload,
GstVideoGLTextureUploadMeta * meta,
gpointer data[GST_VIDEO_MAX_PLANES], guint texture_id[4])
{
guint i;
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&upload->info); i++) {
if (!upload->priv->in_tex[i])
upload->priv->in_tex[i] = gst_gl_memory_wrapped (upload->context,
&upload->info, i, NULL, data[i], NULL, NULL);
}
return _perform_with_gl_memory (upload, meta, texture_id);
}
static gboolean
_perform_for_gl_texture_upload_meta (GstVideoGLTextureUploadMeta *
meta, guint texture_id[4])
{
GstGLUploadMeta *upload;
GstVideoFrame frame;
GstMemory *mem;
gboolean ret;
guint i, n;
g_return_val_if_fail (meta != NULL, FALSE);
g_return_val_if_fail (texture_id != NULL, FALSE);
upload = meta->user_data;
GST_OBJECT_LOCK (upload);
if (!upload->priv->initted) {
GstVideoInfo info;
GstVideoMeta *v_meta = gst_buffer_get_video_meta (upload->priv->buffer);
gint i;
if (!(ret = v_meta != NULL))
goto out;
gst_video_info_init (&info);
info.finfo = gst_video_format_get_info (v_meta->format);
info.width = v_meta->width;
info.height = v_meta->height;
for (i = 0; i < info.finfo->n_planes; i++) {
info.offset[i] = v_meta->offset[i];
info.stride[i] = v_meta->stride[i];
}
_gst_gl_upload_meta_set_format_unlocked (upload, &info);
upload->priv->initted = TRUE;
}
GST_LOG ("Uploading for meta with textures %i,%i,%i,%i", texture_id[0],
texture_id[1], texture_id[2], texture_id[3]);
/* GstGLMemory */
n = gst_buffer_n_memory (upload->priv->buffer);
mem = gst_buffer_peek_memory (upload->priv->buffer, 0);
if (gst_is_gl_memory (mem) && n == GST_VIDEO_INFO_N_PLANES (&upload->info)) {
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&upload->info); i++)
upload->priv->in_tex[i] = (GstGLMemory *) gst_buffer_peek_memory (upload->priv->buffer, i);
ret = _perform_with_gl_memory (upload, meta, texture_id);
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&upload->info); i++)
upload->priv->in_tex[i] = NULL;
if (ret)
goto out;
}
if (!(ret = gst_video_frame_map (&frame, &upload->info, upload->priv->buffer,
GST_MAP_READ))) {
GST_ERROR ("failed to map video frame");
goto out;
}
/* update the video info from the one updated by frame_map using video meta */
_gst_gl_upload_meta_set_format_unlocked (upload, &frame.info);
ret = _perform_with_data_unlocked (upload, meta, frame.data, texture_id);
gst_video_frame_unmap (&frame);
out:
GST_OBJECT_UNLOCK (upload);
return ret;
}
/**
* gst_gl_upload_meta_add_to_buffer:
* @upload: a #GstGLUploadMeta
* @buffer: a #GstBuffer
*
* Adds a #GstVideoGLTextureUploadMeta on @buffer using @upload
*
* Returns: whether it was successful
*/
gboolean
gst_gl_upload_meta_add_to_buffer (GstGLUploadMeta * upload, GstBuffer * buffer)
{
GstVideoGLTextureType texture_types[GST_VIDEO_MAX_PLANES];
GstVideoMeta *v_meta;
gint i;
g_return_val_if_fail (upload != NULL, FALSE);
g_return_val_if_fail (buffer != NULL, FALSE);
v_meta = gst_buffer_get_video_meta (buffer);
g_return_val_if_fail (v_meta != NULL, FALSE);
upload->priv->buffer = buffer;
for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
texture_types[i] = gst_gl_texture_type_from_format (upload->context, v_meta->format, i);
}
gst_buffer_add_video_gl_texture_upload_meta (buffer,
GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_NORMAL, 1, texture_types,
_perform_for_gl_texture_upload_meta, gst_object_ref (upload),
gst_object_ref, gst_object_unref);
return TRUE;
}