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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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1b500dee54
Introduce a new configure option --with-gstreamer-api that determines the desired GStreamer API to use. By default, GStreamer 1.0 is selected. Also integrate more compatibility glue into gstcompat.h and plugins.
274 lines
8.3 KiB
C
274 lines
8.3 KiB
C
/*
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* gstcompat.h - Compatibility glue for GStreamer
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*
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* Copyright (C) 2013 Intel Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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#ifndef GST_COMPAT_H
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#define GST_COMPAT_H
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#include <gst/gst.h>
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/* ------------------------------------------------------------------------ */
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/* --- GStreamer >= 1.0 --- */
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/* ------------------------------------------------------------------------ */
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#if GST_CHECK_VERSION(1,0,0)
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#include <gst/video/gstvideometa.h>
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/* GstStructure */
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#undef gst_structure_get_fourcc
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#define gst_structure_get_fourcc(structure, fieldname, value) \
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gst_compat_structure_get_fourcc(structure, fieldname, value)
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static inline gboolean
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gst_compat_structure_get_fourcc(const GstStructure *structure,
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const gchar *fieldname, guint32 *value)
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{
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const gchar *s = gst_structure_get_string(structure, fieldname);
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if (!s || strlen(s) != 4)
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return FALSE;
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*value = GST_MAKE_FOURCC(s[0], s[1], s[2], s[3]);
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return TRUE;
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}
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/* GstTypeFind */
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#undef GstTypeFindPeekFunction
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#define GstTypeFindPeekFunction GstCompatTypeFindPeekFunction
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#undef GstTypeFindSuggestFunction
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#define GstTypeFindSuggestFunction GstCompatTypeFindSuggestFunction
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typedef const guint8 *(*GstCompatTypeFindPeekFunction)(gpointer, gint64, guint);
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typedef void (*GstCompatTypeFindSuggestFunction)(gpointer, guint, GstCaps *);
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/* GstQuery */
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#define GST_PAD_QUERY_FUNCTION_ARGS \
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GstPad *pad, GstObject *parent, GstQuery *query
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#define GST_PAD_QUERY_FUNCTION_CALL(func, pad, parent, query) \
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(func)(pad, parent, query)
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/* GstPlugin */
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#define GST_PLUGIN_DESC_NAME(NAME) NAME
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/* Misc helpers */
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#define GST_MAKE_FORMAT_STRING(FORMAT) \
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"format=(string)" G_STRINGIFY(FORMAT)
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/* ------------------------------------------------------------------------ */
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/* --- GStreamer = 0.10 --- */
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/* ------------------------------------------------------------------------ */
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#else
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/* GstMemory */
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typedef enum {
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GST_MEMORY_FLAG_READONLY = GST_MINI_OBJECT_FLAG_READONLY
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} GstMemoryFlags;
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typedef enum {
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GST_MAP_READ = 1 << 0,
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GST_MAP_WRITE = 1 << 1
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} GstMapFlags;
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typedef struct {
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GstMapFlags flags;
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guint8 *data;
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gsize size;
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} GstMapInfo;
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/* GstBuffer */
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#undef gst_buffer_new_wrapped
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#define gst_buffer_new_wrapped(data, size) \
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gst_compat_buffer_new_wrapped_full(0, data, size, 0, size, data, g_free)
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#undef gst_buffer_new_wrapped_full
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#define gst_buffer_new_wrapped_full(flags, data, maxsize, ofs, size, ud, udd) \
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gst_compat_buffer_new_wrapped_full(flags, data, maxsize, ofs, size, ud, udd)
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#undef gst_buffer_get_size
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#define gst_buffer_get_size(buffer) gst_compat_buffer_get_size(buffer)
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#undef gst_buffer_map
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#define gst_buffer_map(buffer, mip, f) gst_compat_buffer_map(buffer, mip, f)
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#undef gst_buffer_unmap
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#define gst_buffer_unmap(buffer, mip) gst_compat_buffer_unmap(buffer, mip)
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#undef gst_buffer_extract
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#define gst_buffer_extract(buffer, offset, dest, size) \
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gst_compat_buffer_extract(buffer, offset, dest, size)
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static inline GstBuffer *
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gst_compat_buffer_new_wrapped_full(GstMemoryFlags flags, gpointer data,
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gsize maxsize, gsize offset, gsize size, gpointer user_data,
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GDestroyNotify notify)
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{
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GstBuffer *buffer;
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/* XXX: unsupported */
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g_return_val_if_fail(user_data == NULL, NULL);
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g_return_val_if_fail(notify == NULL, NULL);
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g_return_val_if_fail(maxsize >= size, NULL);
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buffer = gst_buffer_new();
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if (!buffer)
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return NULL;
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GST_BUFFER_DATA(buffer) = data + offset;
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GST_BUFFER_SIZE(buffer) = size;
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return buffer;
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}
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static inline gsize
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gst_compat_buffer_get_size(GstBuffer *buffer)
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{
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return GST_BUFFER_SIZE(buffer);
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}
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static inline gboolean
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gst_compat_buffer_map(GstBuffer *buffer, GstMapInfo *mip, GstMapFlags flags)
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{
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mip->flags = flags;
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mip->data = GST_BUFFER_DATA(buffer);
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mip->size = GST_BUFFER_SIZE(buffer);
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return TRUE;
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}
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static inline void
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gst_compat_buffer_unmap(GstBuffer *buffer, GstMapInfo *mip)
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{
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}
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static inline gsize
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gst_compat_buffer_extract(GstBuffer *buffer, gsize offset, gpointer dest,
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gsize size)
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{
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gsize esize;
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if (!buffer || !dest || offset >= GST_BUFFER_SIZE(buffer))
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return 0;
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esize = MIN(size, GST_BUFFER_SIZE(buffer) - offset);
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memcpy(dest, GST_BUFFER_DATA(buffer) + offset, esize);
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return esize;
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}
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/* GstAdapter */
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#include <gst/base/gstadapter.h>
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#undef gst_adapter_map
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#define gst_adapter_map(adapter, size) gst_compat_adapter_map(adapter, size)
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#undef gst_adapter_unmap
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#define gst_adapter_unmap(adapter) gst_compat_adapter_unmap(adapter)
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static inline gconstpointer
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gst_compat_adapter_map(GstAdapter *adapter, gsize size)
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{
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return gst_adapter_peek(adapter, size);
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}
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static inline void
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gst_compat_adapter_unmap(GstAdapter *adapter)
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{
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}
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/* GstCaps */
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#undef gst_caps_merge
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#define gst_caps_merge(caps1, caps2) gst_compat_caps_merge(caps1, caps2)
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#undef gst_caps_merge_structure
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#define gst_caps_merge_structure(caps, structure) \
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gst_compat_caps_merge_structure(caps, structure)
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static inline GstCaps *
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gst_compat_caps_merge(GstCaps *caps1, GstCaps *caps2)
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{
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(gst_caps_merge)(caps1, caps2);
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return caps1;
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}
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static inline GstCaps *
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gst_compat_caps_merge_structure(GstCaps *caps, GstStructure *structure)
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{
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(gst_caps_merge_structure)(caps, structure);
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return caps;
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}
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/* GstVideoOverlayComposition */
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#include <gst/video/video-overlay-composition.h>
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#undef gst_video_overlay_rectangle_get_pixels_unscaled_raw
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#define gst_video_overlay_rectangle_get_pixels_unscaled_raw(rect, flags) \
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gst_compat_video_overlay_rectangle_get_pixels_unscaled_raw(rect, flags)
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#ifndef HAVE_GST_VIDEO_OVERLAY_HWCAPS
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#define gst_video_overlay_rectangle_get_flags(rect) (0)
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#define gst_video_overlay_rectangle_get_global_alpha(rect) (1.0f)
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#endif
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static inline GstBuffer *
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gst_compat_video_overlay_rectangle_get_pixels_unscaled_raw(
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GstVideoOverlayRectangle *rect, GstVideoOverlayFormatFlags flags)
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{
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guint width, height, stride;
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/* Try to retrieve the original buffer that was passed to
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gst_video_overlay_rectangle_new_argb(). This will only work if
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there was no previous user that required pixels with non native
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alpha type */
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return gst_video_overlay_rectangle_get_pixels_unscaled_argb(rect,
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&width, &height, &stride, flags);
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}
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/* GstPad */
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#undef GST_FLOW_EOS
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#define GST_FLOW_EOS GST_FLOW_UNEXPECTED
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/* GstElement */
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#undef gst_element_class_set_static_metadata
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#define gst_element_class_set_static_metadata(klass, name, path, desc, author) \
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gst_compat_element_class_set_static_metadata(klass, name, path, desc, author)
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static inline void
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gst_compat_element_class_set_static_metadata(GstElementClass *klass,
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const gchar *name, const char *path, const gchar *desc, const gchar *author)
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{
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gst_element_class_set_details_simple(klass, name, path, desc, author);
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}
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/* GstTypeFind */
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#undef GstTypeFindPeekFunction
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#define GstTypeFindPeekFunction GstCompatTypeFindPeekFunction
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#undef GstTypeFindSuggestFunction
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#define GstTypeFindSuggestFunction GstCompatTypeFindSuggestFunction
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typedef guint8 *(*GstCompatTypeFindPeekFunction)(gpointer, gint64, guint);
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typedef void (*GstCompatTypeFindSuggestFunction)(gpointer, guint, const GstCaps *);
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/* GstQuery */
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#define GST_PAD_QUERY_FUNCTION_ARGS \
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GstPad *pad, GstQuery *query
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#define GST_PAD_QUERY_FUNCTION_CALL(func, pad, parent, query) \
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(func)(pad, query)
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/* GstPlugin */
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#define GST_PLUGIN_DESC_NAME(NAME) G_STRINGIFY(NAME)
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/* Misc helpers */
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#define GST_MAKE_FORMAT_STRING(FORMAT) \
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"format=(fourcc)" G_STRINGIFY(FORMAT)
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#endif
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#endif /* GST_COMPAT_H */
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