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068c2a71ba
When a buffer is pushed downstream, we should try not to hold the buffer mapped with write access. Doing so would often lead to an unneccesary memcpy later. For instance, gst_buffer_make_writable() in gst_video_decoder_finish_frame() will cause a memcpy because of _memory_get_exclusive_reference(). We know that we can perform a two-step remap when using system memory, as this will not cause the location of the memory to change. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/812>
121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/* VPX
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* Copyright (C) 2006 David Schleef <ds@schleef.org>
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* Copyright (C) 2008,2009,2010 Entropy Wave Inc
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* Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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 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; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef __GST_VPX_DEC_H__
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#define __GST_VPX_DEC_H__
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#if defined(HAVE_VP8_DECODER) || defined(HAVE_VP9_DECODER)
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#include <gst/gst.h>
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#include <gst/video/gstvideodecoder.h>
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/* FIXME: Undef HAVE_CONFIG_H because vpx_codec.h uses it,
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* which causes compilation failures */
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#ifdef HAVE_CONFIG_H
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#undef HAVE_CONFIG_H
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#endif
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#include <vpx/vpx_decoder.h>
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#include <vpx/vp8dx.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VPX_DEC \
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(gst_vpx_dec_get_type())
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#define GST_VPX_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VPX_DEC,GstVPXDec))
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#define GST_VPX_DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VPX_DEC,GstVPXDecClass))
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#define GST_IS_VPX_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VPX_DEC))
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#define GST_IS_VPX_DEC_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VPX_DEC))
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#define GST_VPX_DEC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_VPX_DEC, GstVPXDecClass))
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typedef struct _GstVPXDec GstVPXDec;
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typedef struct _GstVPXDecClass GstVPXDecClass;
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struct _GstVPXDec
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{
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GstVideoDecoder base_video_decoder;
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/* < private > */
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vpx_codec_ctx_t decoder;
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/* state */
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gboolean decoder_inited;
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/* properties */
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gboolean post_processing;
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enum vp8_postproc_level post_processing_flags;
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gint deblocking_level;
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gint noise_level;
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gint threads;
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GstVideoCodecState *input_state;
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GstVideoCodecState *output_state;
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/* allocation */
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gboolean have_video_meta;
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GstBufferPool *pool;
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gsize buf_size;
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gboolean safe_remap;
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};
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struct _GstVPXDecClass
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{
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GstVideoDecoderClass base_video_decoder_class;
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const char* video_codec_tag;
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/*supported vpx algo*/
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vpx_codec_iface_t* codec_algo;
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/*virtual function to open_codec*/
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GstFlowReturn (*open_codec) (GstVPXDec * dec, GstVideoCodecFrame * frame);
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/*virtual function to send tags*/
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void (*send_tags) (GstVPXDec* dec);
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/*virtual function to set/correct the stream info*/
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void (*set_stream_info) (GstVPXDec *dec, vpx_codec_stream_info_t *stream_info);
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/*virtual function to set default format while opening codec*/
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void (*set_default_format) (GstVPXDec *dec, GstVideoFormat fmt, int width, int height);
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/*virtual function to negotiate format while handling frame*/
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void (*handle_resolution_change) (GstVPXDec *dec, vpx_image_t *img, GstVideoFormat fmt);
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/*virtual function to check valid format*/
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gboolean (*get_frame_format)(GstVPXDec *dec, vpx_image_t *img, GstVideoFormat* fmt);
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/* virtual function to check whether the decoder can handle data
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* before receiving a sync_point, either at the start of after a
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* decoding error
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*/
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gboolean (*get_needs_sync_point)(GstVPXDec *dec);
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};
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GType gst_vpx_dec_get_type (void);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC (GstVPXDec, gst_object_unref)
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G_END_DECLS
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#endif
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#endif /* __GST_VP8_DEC_H__ */
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