gstreamer/subprojects/gst-plugins-bad/sys/va/gstjpegdecoder.h

147 lines
4.4 KiB
C

/* GStreamer
* Copyright (C) 2022 Víctor Jáquez <vjaquez@igalia.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.
*/
#ifndef __GST_JPEG_DECODER_H__
#define __GST_JPEG_DECODER_H__
#include <gst/codecs/codecs-prelude.h>
#include <gst/video/video.h>
#include <gst/codecparsers/gstjpegparser.h>
G_BEGIN_DECLS
#define GST_TYPE_JPEG_DECODER (gst_jpeg_decoder_get_type())
#define GST_JPEG_DECODER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JPEG_DECODER,GstJpegDecoder))
#define GST_JPEG_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JPEG_DECODER,GstJpegDecoderClass))
#define GST_JPEG_DECODER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_JPEG_DECODER,GstJpegDecoderClass))
#define GST_IS_JPEG_DECODER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JPEG_DECODER))
#define GST_IS_JPEG_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JPEG_DECODER))
#define GST_JPEG_DECODER_CAST(obj) ((GstJpegDecoder*)obj)
typedef struct _GstJpegDecoderScan GstJpegDecoderScan;
typedef struct _GstJpegDecoder GstJpegDecoder;
typedef struct _GstJpegDecoderClass GstJpegDecoderClass;
typedef struct _GstJpegDecoderPrivate GstJpegDecoderPrivate;
/**
* GstJpegDecoderScan:
*
* Container for a SOS segment.
*/
struct _GstJpegDecoderScan
{
GstJpegScanHdr *scan_hdr;
GstJpegHuffmanTables *huffman_tables;
GstJpegQuantTables *quantization_tables;
guint restart_interval;
guint mcus_per_row;
guint mcu_rows_in_scan;
};
/**
* GstJpegDecoder:
*
* The opaque #GstJpegDecoder data structure.
*
* Since: 1.22
*/
struct _GstJpegDecoder
{
/*< private >*/
GstVideoDecoder parent;
/*< protected >*/
GstVideoCodecState * input_state;
/*< private >*/
GstJpegDecoderPrivate *priv;
gpointer padding[GST_PADDING_LARGE];
};
/**
* GstJpegDecoderClass:
*
* The opaque #GstJpegDecoderClass data structure.
*/
struct _GstJpegDecoderClass
{
/*< private >*/
GstVideoDecoderClass parent_class;
/**
* GstJpegDecoderClass::new_picture:
* @decoder: a #GstJpegDecoder
* @frame: (transfer none): a #GstVideoCodecFrame
* @frame_hdr: (transfer none): a #GstJpegFrameHdr
*
* Called whenever new picture is detected.
*/
GstFlowReturn (*new_picture) (GstJpegDecoder * decoder,
GstVideoCodecFrame * frame,
GstJpegMarker marker,
GstJpegFrameHdr * frame_hdr);
/**
* GstJpegDecoderClass::decode_scan:
* @decoder: a #GstJpegDecoder
* @scan: (transfer none): a #GstJpegDecoderScan
* @buffer: (transfer none): scan buffer
* @size: size of @buffer
*
* Called whenever new scan is found.
*/
GstFlowReturn (*decode_scan) (GstJpegDecoder * decoder,
GstJpegDecoderScan * scan,
const guint8 * buffer,
guint32 size);
/**
* GstJpegDecoderClass::end_picture:
* @decoder: a #GstJpegDecoder
*
* Called whenever a picture end mark is found.
*/
GstFlowReturn (*end_picture) (GstJpegDecoder * decoder);
/**
* GstJpegDecoderClass::output_picture:
* @decoder: a #GstJpegDecoder
* @frame: (transfer full): a #GstVideoCodecFrame
*
* Called whenever a @frame is required to be outputted. The
* #GstVideoCodecFrame must be consumed by subclass.
*/
GstFlowReturn (*output_picture) (GstJpegDecoder * decoder,
GstVideoCodecFrame * frame);
/*< Private >*/
gpointer padding[GST_PADDING_LARGE];
};
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstJpegDecoder, gst_object_unref)
GST_CODECS_API
GType gst_jpeg_decoder_get_type (void);
G_END_DECLS
#endif /* __GST_JPEG_DECODER_H__ */