Source/WebCore/platform/graphics/gstreamer/GStreamerVersioning.cpp

   1 /*
   2  * Copyright (C) 2012 Igalia, S.L.
   3  *
   4  *  This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  *  This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU Library General Public License
  15  *  along with this library; see the file COPYING.LIB.  If not, write to
  16  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  *  Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include "GStreamerVersioning.h"
  23
  24 #include "IntSize.h"
  25
  26 void webkitGstObjectRefSink(GstObject* gstObject)
  27 {
  28 #ifdef GST_API_VERSION_1
  29     gst_object_ref_sink(gstObject);
  30 #else
  31     gst_object_ref(gstObject);
  32     gst_object_sink(gstObject);
  33 #endif
  34 }
  35
  36 GstCaps* webkitGstGetPadCaps(GstPad* pad)
  37 {
  38     if (!pad)
  39         return 0;
  40
  41     GstCaps* caps;
  42 #ifdef GST_API_VERSION_1
  43     caps = gst_pad_get_current_caps(pad);
  44     if (!caps)
  45         caps = gst_pad_query_caps(pad, 0);
  46 #else
  47     caps = GST_PAD_CAPS(pad);
  48 #endif
  49     return caps;
  50 }
  51
  52 bool getVideoSizeAndFormatFromCaps(GstCaps* caps, WebCore::IntSize& size, GstVideoFormat& format, int& pixelAspectRatioNumerator, int& pixelAspectRatioDenominator, int& stride)
  53 {
  54 #ifdef GST_API_VERSION_1
  55     GstVideoInfo info;
  56     if (!gst_video_info_from_caps(&info, caps))
  57         return false;
  58
  59     format = GST_VIDEO_INFO_FORMAT(&info);
  60     size.setWidth(GST_VIDEO_INFO_WIDTH(&info));
  61     size.setHeight(GST_VIDEO_INFO_HEIGHT(&info));
  62     pixelAspectRatioNumerator = GST_VIDEO_INFO_PAR_N(&info);
  63     pixelAspectRatioDenominator = GST_VIDEO_INFO_PAR_D(&info);
  64     stride = GST_VIDEO_INFO_PLANE_STRIDE(&info, 0);
  65 #else
  66     gint width, height;
  67     if (!GST_IS_CAPS(caps) || !gst_caps_is_fixed(caps)
  68         || !gst_video_format_parse_caps(caps, &format, &width, &height)
  69         || !gst_video_parse_caps_pixel_aspect_ratio(caps, &pixelAspectRatioNumerator,
  70                                                     &pixelAspectRatioDenominator))
  71         return false;
  72     size.setWidth(width);
  73     size.setHeight(height);
  74     stride = size.width() * 4;
  75 #endif
  76
  77     return true;
  78 }
  79
  80 GstBuffer* createGstBuffer(GstBuffer* buffer)
  81 {
  82 #ifndef GST_API_VERSION_1
  83     GstBuffer* newBuffer = gst_buffer_try_new_and_alloc(GST_BUFFER_SIZE(buffer));
  84 #else
  85     gsize bufferSize = gst_buffer_get_size(buffer);
  86     GstBuffer* newBuffer = gst_buffer_new_and_alloc(bufferSize);
  87 #endif
  88
  89     if (!newBuffer)
  90         return 0;
  91
  92 #ifndef GST_API_VERSION_1
  93     gst_buffer_copy_metadata(newBuffer, buffer, static_cast<GstBufferCopyFlags>(GST_BUFFER_COPY_ALL));
  94 #else
  95     gst_buffer_copy_into(newBuffer, buffer, static_cast<GstBufferCopyFlags>(GST_BUFFER_COPY_METADATA), 0, bufferSize);
  96 #endif
  97     return newBuffer;
  98 }
  99
 100 void setGstElementClassMetadata(GstElementClass* elementClass, const char* name, const char* longName, const char* description, const char* author)
 101 {
 102 #ifdef GST_API_VERSION_1
 103     gst_element_class_set_metadata(elementClass, name, longName, description, author);
 104 #else
 105     gst_element_class_set_details_simple(elementClass, name, longName, description, author);
 106 #endif
 107 }