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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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f7337b7477
We would previously register a whole bunch of encoder/decoder for which the caps
were ... "unknown/unknown".
Add a function to quickly check (without generating caps) whether a given
AVCodecID has a known mapping (which can include the {video|audio}/x-gst-av-*
ones) without generating the caps.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6237>
142 lines
4.4 KiB
C
142 lines
4.4 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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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#ifndef __GST_FFMPEG_CODECMAP_H__
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#define __GST_FFMPEG_CODECMAP_H__
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#include <libavcodec/avcodec.h>
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#include <libavformat/avformat.h>
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#include <gst/gst.h>
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#include <gst/audio/audio.h>
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#include <gst/video/video.h>
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/*
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* _codecid_is_image() returns TRUE for image formats
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*/
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gboolean
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gst_ffmpeg_codecid_is_image (enum AVCodecID codec_id);
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/* Returns TRUE if codec_id has a known mapping */
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gboolean
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gst_ffmpeg_codecid_is_known(enum AVCodecID codec_id);
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/*
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* _codecid_to_caps () gets the GstCaps that belongs to
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* a certain CodecID for a pad with compressed data.
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*/
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GstCaps *
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gst_ffmpeg_codecid_to_caps (enum AVCodecID codec_id,
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AVCodecContext *context,
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gboolean encode);
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/*
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* _codectype_to_caps () gets the GstCaps that belongs to
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* a certain AVMediaType for a pad with uncompressed data.
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*/
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GstCaps *
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gst_ffmpeg_codectype_to_audio_caps (AVCodecContext *context,
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enum AVCodecID codec_id,
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gboolean encode,
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AVCodec *codec);
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GstCaps *
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gst_ffmpeg_codectype_to_video_caps (AVCodecContext *context,
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enum AVCodecID codec_id,
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gboolean encode,
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const AVCodec *codec);
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/*
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* caps_to_codecid () transforms a GstCaps that belongs to
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* a pad for compressed data to (optionally) a filled-in
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* context and a codecID.
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*/
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enum AVCodecID
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gst_ffmpeg_caps_to_codecid (const GstCaps *caps,
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AVCodecContext *context);
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/*
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* caps_with_codecid () transforms a GstCaps for a known codec
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* ID into a filled-in context.
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*/
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void
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gst_ffmpeg_caps_with_codecid (enum AVCodecID codec_id,
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enum AVMediaType codec_type,
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const GstCaps *caps,
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AVCodecContext *context);
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/*
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* caps_with_codectype () transforms a GstCaps that belongs to
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* a pad for uncompressed data to a filled-in context.
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*/
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void
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gst_ffmpeg_caps_with_codectype (enum AVMediaType type,
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const GstCaps *caps,
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AVCodecContext *context);
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void
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gst_ffmpeg_videoinfo_to_context (GstVideoInfo *info,
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AVCodecContext *context);
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void
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gst_ffmpeg_audioinfo_to_context (GstAudioInfo *info,
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AVCodecContext *context);
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GstVideoFormat gst_ffmpeg_pixfmt_to_videoformat (enum AVPixelFormat pixfmt);
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enum AVPixelFormat gst_ffmpeg_videoformat_to_pixfmt (GstVideoFormat format);
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GstAudioFormat gst_ffmpeg_smpfmt_to_audioformat (enum AVSampleFormat sample_fmt,
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GstAudioLayout * layout);
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/*
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* _formatid_to_caps () is meant for muxers/demuxers, it
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* transforms a name (ffmpeg way of ID'ing these, why don't
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* they have unique numerical IDs?) to the corresponding
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* caps belonging to that mux-format
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*/
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GstCaps *
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gst_ffmpeg_formatid_to_caps (const gchar *format_name);
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/*
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* _formatid_get_codecids () can be used to get the codecIDs
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* (AV_CODEC_ID_NONE-terminated list) that fit that specific
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* output format.
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*/
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gboolean
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gst_ffmpeg_formatid_get_codecids (const gchar *format_name,
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enum AVCodecID ** video_codec_list,
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enum AVCodecID ** audio_codec_list,
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const AVOutputFormat * plugin);
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#if LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(57, 28, 100)
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gboolean
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gst_ffmpeg_channel_layout_to_gst (const AVChannelLayout * channel_layout, gint channels,
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GstAudioChannelPosition * pos);
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#else
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gboolean
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gst_ffmpeg_channel_layout_to_gst (guint64 channel_layout, gint channels,
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GstAudioChannelPosition * pos);
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#endif
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#endif /* __GST_FFMPEG_CODECMAP_H__ */
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