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b6411ae74c
For each lib we build export its own API in headers when we're building it, otherwise import the API from the headers. This fixes linker warnings on Windows when building with MSVC. The problem was that we had defined all GST_*_API decorators unconditionally to GST_EXPORT. This was intentional and only supposed to be temporary, but caused linker warnings because we tell the linker that we want to export all symbols even those from externall DLLs, and when the linker notices that they were in external DLLS and not present locally it warns. What we need to do when building each library is: export the library's own symbols and import all other symbols. To this end we define e.g. BUILDING_GST_FOO and then we define the GST_FOO_API decorator either to export or to import symbols depending on whether BUILDING_GST_FOO is set or not. That way external users of each library API automatically get the import. While we're at it, add new GST_API_EXPORT in config.h and use that for GST_*_API decorators instead of GST_EXPORT. The right export define depends on the toolchain and whether we're using -fvisibility=hidden or not, so it's better to set it to the right thing directly than hard-coding a compiler whitelist in the public header. We put the export define into config.h instead of passing it via the command line to the compiler because it might contain spaces and brackets and in the autotools scenario we'd have to pass that through multiple layers of plumbing and Makefile/shell escaping and we're just not going to be *that* lucky. The export define is only used if we're compiling our lib, not by external users of the lib headers, so it's not a problem to put it into config.h Also, this means all .c files of libs need to include config.h to get the export marker defined, so fix up a few that didn't include config.h. This commit depends on a common submodule commit that makes gst-glib-gen.mak add an #include "config.h" to generated enum/marshal .c files for the autotools build. https://bugzilla.gnome.org/show_bug.cgi?id=797185
299 lines
7.5 KiB
C
299 lines
7.5 KiB
C
/*
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* ISO File Format parsing library
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*
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* gstisoff.h
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*
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* Copyright (C) 2015 Samsung Electronics. All rights reserved.
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* Author: Thiago Santos <thiagoss@osg.samsung.com>
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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 Library General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library (COPYING); if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_ISOFF_H__
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#define __GST_ISOFF_H__
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#include <gst/gst.h>
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#include <gst/base/base.h>
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G_BEGIN_DECLS
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#ifndef GST_ISOFF_API
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# ifdef BUILDING_GST_ISOFF
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# define GST_ISOFF_API GST_API_EXPORT /* from config.h */
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# else
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# define GST_ISOFF_API GST_API_IMPORT
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# endif
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#endif
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typedef enum {
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GST_ISOFF_PARSER_OK,
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GST_ISOFF_PARSER_DONE,
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GST_ISOFF_PARSER_UNEXPECTED,
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GST_ISOFF_PARSER_ERROR
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} GstIsoffParserResult;
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GST_ISOFF_API
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gboolean gst_isoff_parse_box_header (GstByteReader * reader, guint32 * type, guint8 extended_type[16], guint * header_size, guint64 * size);
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#define GST_ISOFF_FOURCC_UUID GST_MAKE_FOURCC('u','u','i','d')
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#define GST_ISOFF_FOURCC_MOOF GST_MAKE_FOURCC('m','o','o','f')
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#define GST_ISOFF_FOURCC_MFHD GST_MAKE_FOURCC('m','f','h','d')
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#define GST_ISOFF_FOURCC_TFHD GST_MAKE_FOURCC('t','f','h','d')
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#define GST_ISOFF_FOURCC_TRUN GST_MAKE_FOURCC('t','r','u','n')
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#define GST_ISOFF_FOURCC_TRAF GST_MAKE_FOURCC('t','r','a','f')
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#define GST_ISOFF_FOURCC_TFDT GST_MAKE_FOURCC('t','f','d','t')
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#define GST_ISOFF_FOURCC_MDAT GST_MAKE_FOURCC('m','d','a','t')
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#define GST_ISOFF_FOURCC_MOOV GST_MAKE_FOURCC('m','o','o','v')
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#define GST_ISOFF_FOURCC_TRAK GST_MAKE_FOURCC('t','r','a','k')
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#define GST_ISOFF_FOURCC_TKHD GST_MAKE_FOURCC('t','k','h','d')
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#define GST_ISOFF_FOURCC_MDIA GST_MAKE_FOURCC('m','d','i','a')
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#define GST_ISOFF_FOURCC_MDHD GST_MAKE_FOURCC('m','d','h','d')
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#define GST_ISOFF_FOURCC_HDLR GST_MAKE_FOURCC('h','d','l','r')
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#define GST_ISOFF_FOURCC_SIDX GST_MAKE_FOURCC('s','i','d','x')
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/* handler type */
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#define GST_ISOFF_FOURCC_SOUN GST_MAKE_FOURCC('s','o','u','n')
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#define GST_ISOFF_FOURCC_VIDE GST_MAKE_FOURCC('v','i','d','e')
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#define GST_ISOFF_SAMPLE_FLAGS_IS_LEADING(flags) (((flags) >> 26) & 0x03)
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#define GST_ISOFF_SAMPLE_FLAGS_SAMPLE_DEPENDS_ON(flags) (((flags) >> 24) & 0x03)
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#define GST_ISOFF_SAMPLE_FLAGS_SAMPLE_IS_DEPENDED_ON(flags) (((flags) >> 22) & 0x03)
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#define GST_ISOFF_SAMPLE_FLAGS_SAMPLE_HAS_REDUNDANCY(flags) (((flags) >> 20) & 0x03)
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#define GST_ISOFF_SAMPLE_FLAGS_SAMPLE_PADDING_VALUE(flags) (((flags) >> 17) & 0x07)
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#define GST_ISOFF_SAMPLE_FLAGS_SAMPLE_IS_NON_SYNC_SAMPLE(flags) (((flags) >> 16) & 0x01)
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#define GST_ISOFF_SAMPLE_FLAGS_SAMPLE_DEGRADATION_PRIORITY(flags) (((flags) >> 0) & 0x0f)
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/* Smooth-Streaming specific boxes */
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typedef struct _GstTfxdBox
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{
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guint8 version;
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guint32 flags;
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guint64 time;
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guint64 duration;
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} GstTfxdBox;
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typedef struct _GstTfrfBoxEntry
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{
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guint64 time;
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guint64 duration;
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} GstTfrfBoxEntry;
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typedef struct _GstTfrfBox
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{
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guint8 version;
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guint32 flags;
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gint entries_count;
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GArray *entries;
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} GstTfrfBox;
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/* Common boxes */
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typedef struct _GstMfhdBox
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{
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guint32 sequence_number;
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} GstMfhdBox;
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typedef enum
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{
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GST_TFHD_FLAGS_BASE_DATA_OFFSET_PRESENT = 0x000001,
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GST_TFHD_FLAGS_SAMPLE_DESCRIPTION_INDEX_PRESENT = 0x000002,
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GST_TFHD_FLAGS_DEFAULT_SAMPLE_DURATION_PRESENT = 0x000008,
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GST_TFHD_FLAGS_DEFAULT_SAMPLE_SIZE_PRESENT = 0x000010,
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GST_TFHD_FLAGS_DEFAULT_SAMPLE_FLAGS_PRESENT = 0x000020,
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GST_TFHD_FLAGS_DURATION_IS_EMPTY = 0x010000,
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GST_TFHD_FLAGS_DEFAULT_BASE_IS_MOOF = 0x020000
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} GstTfhdFlags;
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typedef struct _GstTfhdBox
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{
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guint8 version;
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GstTfhdFlags flags;
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guint32 track_id;
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/* optional */
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guint64 base_data_offset;
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guint32 sample_description_index;
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guint32 default_sample_duration;
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guint32 default_sample_size;
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guint32 default_sample_flags;
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} GstTfhdBox;
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typedef enum
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{
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GST_TRUN_FLAGS_DATA_OFFSET_PRESENT = 0x000001,
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GST_TRUN_FLAGS_FIRST_SAMPLE_FLAGS_PRESENT = 0x000004,
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GST_TRUN_FLAGS_SAMPLE_DURATION_PRESENT = 0x000100,
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GST_TRUN_FLAGS_SAMPLE_SIZE_PRESENT = 0x000200,
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GST_TRUN_FLAGS_SAMPLE_FLAGS_PRESENT = 0x000400,
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GST_TRUN_FLAGS_SAMPLE_COMPOSITION_TIME_OFFSETS_PRESENT = 0x000800
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} GstTrunFlags;
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typedef struct _GstTrunBox
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{
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guint8 version;
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GstTrunFlags flags;
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guint32 sample_count;
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/* optional */
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gint32 data_offset;
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guint32 first_sample_flags;
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GArray *samples;
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} GstTrunBox;
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typedef struct _GstTrunSample
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{
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guint32 sample_duration;
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guint32 sample_size;
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guint32 sample_flags;
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union {
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guint32 u; /* version 0 */
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gint32 s; /* others */
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} sample_composition_time_offset;
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} GstTrunSample;
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typedef struct _GstTdftBox
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{
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guint64 decode_time;
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} GstTfdtBox;
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typedef struct _GstTrafBox
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{
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GstTfhdBox tfhd;
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GstTfdtBox tfdt;
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GArray *trun;
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/* smooth-streaming specific */
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GstTfrfBox *tfrf;
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GstTfxdBox *tfxd;
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} GstTrafBox;
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typedef struct _GstMoofBox
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{
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GstMfhdBox mfhd;
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GArray *traf;
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} GstMoofBox;
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GST_ISOFF_API
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GstMoofBox * gst_isoff_moof_box_parse (GstByteReader *reader);
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GST_ISOFF_API
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void gst_isoff_moof_box_free (GstMoofBox *moof);
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typedef struct _GstTkhdBox
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{
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guint32 track_id;
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} GstTkhdBox;
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typedef struct _GstMdhdBox
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{
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guint32 timescale;
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} GstMdhdBox;
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typedef struct _GstHdlrBox
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{
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guint32 handler_type;
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} GstHdlrBox;
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typedef struct _GstMdiaBox
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{
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GstMdhdBox mdhd;
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GstHdlrBox hdlr;
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} GstMdiaBox;
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typedef struct _GstTrakBox
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{
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GstTkhdBox tkhd;
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GstMdiaBox mdia;
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} GstTrakBox;
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typedef struct _GstMoovBox
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{
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GArray *trak;
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} GstMoovBox;
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GST_ISOFF_API
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GstMoovBox * gst_isoff_moov_box_parse (GstByteReader *reader);
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GST_ISOFF_API
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void gst_isoff_moov_box_free (GstMoovBox *moov);
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typedef struct _GstSidxBoxEntry
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{
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gboolean ref_type;
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guint32 size;
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GstClockTime duration;
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gboolean starts_with_sap;
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guint8 sap_type;
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guint32 sap_delta_time;
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guint64 offset;
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GstClockTime pts;
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} GstSidxBoxEntry;
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typedef struct _GstSidxBox
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{
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guint8 version;
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guint32 flags;
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guint32 ref_id;
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guint32 timescale;
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guint64 earliest_pts;
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guint64 first_offset;
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gint entry_index;
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gint entries_count;
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GstSidxBoxEntry *entries;
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} GstSidxBox;
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typedef enum _GstSidxParserStatus
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{
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GST_ISOFF_SIDX_PARSER_INIT,
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GST_ISOFF_SIDX_PARSER_HEADER,
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GST_ISOFF_SIDX_PARSER_DATA,
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GST_ISOFF_SIDX_PARSER_FINISHED
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} GstSidxParserStatus;
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typedef struct _GstSidxParser
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{
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GstSidxParserStatus status;
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guint64 size;
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guint64 cumulative_entry_size;
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guint64 cumulative_pts;
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GstSidxBox sidx;
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} GstSidxParser;
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GST_ISOFF_API
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void gst_isoff_sidx_parser_init (GstSidxParser * parser);
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GST_ISOFF_API
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void gst_isoff_sidx_parser_clear (GstSidxParser * parser);
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GST_ISOFF_API
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GstIsoffParserResult gst_isoff_sidx_parser_parse (GstSidxParser * parser, GstByteReader * reader, guint * consumed);
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GST_ISOFF_API
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GstIsoffParserResult gst_isoff_sidx_parser_add_buffer (GstSidxParser * parser, GstBuffer * buf, guint * consumed);
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G_END_DECLS
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#endif /* __GST_ISOFF_H__ */
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