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ab3fd36d64
Some devices only ever keep one buffer available in the GL queue resulting in multiple calls to release_output_buffer only causing one frame to be rendered. If there is a queue after amcvideodec (even playsink's small one), then multiple buffers are pushed but only a small fraction of them are actually rendered on time. The rest will either render some number of frames ahead of where they are meant to be or timeout waiting for a frame that's already been rendered. Solved by moving the release_output_buffer into the sync_meta the is pushed downstream. When downstream renders, the custom sync implementation attempts to release the current buffer (if not already released) and render. Once the frame has been rendered to the screen, the next frame is released and is hopefully available by the time the next frame is to be rendered. This fixes a perceived frame jitter in the output.
127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
/*
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* Copyright (C) 2012, Collabora Ltd.
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* Author: 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 Lesser General Public
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* License as published by the Free Software Foundation
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* version 2.1 of the License.
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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 Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef __GST_AMC_VIDEO_DEC_H__
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#define __GST_AMC_VIDEO_DEC_H__
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#include <gst/gst.h>
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#include <gst/gl/gl.h>
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#include <gst/video/gstvideodecoder.h>
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#include "gstamc.h"
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#include "gstamcsurface.h"
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G_BEGIN_DECLS
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#define GST_TYPE_AMC_VIDEO_DEC \
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(gst_amc_video_dec_get_type())
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#define GST_AMC_VIDEO_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AMC_VIDEO_DEC,GstAmcVideoDec))
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#define GST_AMC_VIDEO_DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AMC_VIDEO_DEC,GstAmcVideoDecClass))
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#define GST_AMC_VIDEO_DEC_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_AMC_VIDEO_DEC,GstAmcVideoDecClass))
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#define GST_IS_AMC_VIDEO_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AMC_VIDEO_DEC))
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#define GST_IS_AMC_VIDEO_DEC_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AMC_VIDEO_DEC))
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typedef struct _GstAmcVideoDec GstAmcVideoDec;
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typedef struct _GstAmcVideoDecClass GstAmcVideoDecClass;
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typedef enum _GstAmcCodecConfig GstAmcCodecConfig;
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enum _GstAmcCodecConfig
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{
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AMC_CODEC_CONFIG_NONE,
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AMC_CODEC_CONFIG_WITH_SURFACE,
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AMC_CODEC_CONFIG_WITHOUT_SURFACE,
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};
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struct _GstAmcVideoDec
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{
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GstVideoDecoder parent;
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/* < private > */
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GstAmcCodec *codec;
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GstAmcCodecConfig codec_config;
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GstVideoCodecState *input_state;
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gboolean input_state_changed;
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/* Output format of the codec */
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GstVideoFormat format;
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GstAmcColorFormatInfo color_format_info;
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/* Output dimensions */
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guint width;
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guint height;
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guint8 *codec_data;
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gsize codec_data_size;
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/* TRUE if the component is configured and saw
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* the first buffer */
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gboolean started;
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gboolean flushing;
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GstClockTime last_upstream_ts;
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/* Draining state */
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GMutex drain_lock;
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GCond drain_cond;
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/* TRUE if EOS buffers shouldn't be forwarded */
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gboolean draining;
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/* TRUE if the component is drained currently */
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gboolean drained;
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GstAmcSurface *surface;
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GstGLDisplay *gl_display;
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GstGLContext *gl_context;
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GstGLContext *other_gl_context;
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gboolean downstream_supports_gl;
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GstFlowReturn downstream_flow_ret;
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gboolean gl_mem_attached;
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GstGLMemory *oes_mem;
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GError *gl_error;
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GMutex gl_lock;
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GCond gl_cond;
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guint gl_last_rendered_frame;
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guint gl_pushed_frame_count; /* n buffers pushed */
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guint gl_ready_frame_count; /* n buffers ready for GL access */
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guint gl_released_frame_count; /* n buffers released */
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GQueue *gl_queue;
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};
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struct _GstAmcVideoDecClass
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{
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GstVideoDecoderClass parent_class;
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const GstAmcCodecInfo *codec_info;
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};
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GType gst_amc_video_dec_get_type (void);
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G_END_DECLS
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#endif /* __GST_AMC_VIDEO_DEC_H__ */
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