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For this case write a WAVEFORMATEXTENSIBLE header and also reorder the raw audio channels to the AVI channel order if needed.
209 lines
5.4 KiB
C
209 lines
5.4 KiB
C
/* AVI muxer plugin for GStreamer
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* Copyright (C) 2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
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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_AVI_MUX_H__
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#define __GST_AVI_MUX_H__
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#include <gst/gst.h>
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#include <gst/base/gstcollectpads.h>
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#include <gst/riff/riff-ids.h>
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#include <gst/audio/audio.h>
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#include "avi-ids.h"
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G_BEGIN_DECLS
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#define GST_TYPE_AVI_MUX \
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(gst_avi_mux_get_type())
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#define GST_AVI_MUX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AVI_MUX,GstAviMux))
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#define GST_AVI_MUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AVI_MUX,GstAviMuxClass))
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#define GST_IS_AVI_MUX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AVI_MUX))
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#define GST_IS_AVI_MUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AVI_MUX))
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#define GST_AVI_INDEX_OF_INDEXES 0
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#define GST_AVI_INDEX_OF_CHUNKS 1
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/* this allows indexing up to 64GB avi file */
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#define GST_AVI_SUPERINDEX_COUNT 32
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/* max size */
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#define GST_AVI_MAX_SIZE 0x40000000
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typedef struct _gst_avi_superindex_entry {
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guint64 offset;
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guint32 size;
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guint32 duration;
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} gst_avi_superindex_entry;
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typedef struct _gst_riff_strh_full {
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gst_riff_strh parent;
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/* rcFrame, RECT structure (struct of 4 shorts) */
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gint16 left;
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gint16 top;
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gint16 right;
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gint16 bottom;
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} gst_riff_strh_full;
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typedef struct _GstAviPad GstAviPad;
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typedef struct _GstAviMux GstAviMux;
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typedef struct _GstAviMuxClass GstAviMuxClass;
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typedef GstFlowReturn (*GstAviPadHook) (GstAviMux * avi, GstAviPad * avipad,
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GstBuffer * buffer);
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struct _GstAviPad {
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/* do not extend, link to it */
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/* is NULL if original sink request pad has been removed */
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GstCollectData *collect;
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/* type */
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gboolean is_video;
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gboolean connected;
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/* chunk tag */
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gchar *tag;
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/* stream header */
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gst_riff_strh hdr;
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/* odml super indexes */
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gst_avi_superindex_entry idx[GST_AVI_SUPERINDEX_COUNT];
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gint idx_index;
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gchar *idx_tag;
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/* stream specific hook */
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GstAviPadHook hook;
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};
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typedef struct _GstAviVideoPad {
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GstAviPad parent;
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/* stream format */
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gst_riff_strf_vids vids;
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/* extra data */
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GstBuffer *vids_codec_data;
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/* ODML video properties */
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gst_riff_vprp vprp;
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GstBuffer *prepend_buffer;
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} GstAviVideoPad;
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typedef struct _GstAviAudioPad {
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GstAviPad parent;
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/* stream format */
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gst_riff_strf_auds auds;
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/* additional fields for WAVEFORMATEX */
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gboolean write_waveformatex;
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guint16 valid_bits_per_sample;
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guint32 channel_mask;
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/* for raw audio */
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gboolean needs_reorder;
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GstAudioFormat audio_format;
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GstAudioChannelPosition gst_positions[64], wav_positions[64];
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/* audio info for bps calculation */
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guint32 audio_size;
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guint64 audio_time;
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/* max audio chunk size for vbr */
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guint32 max_audio_chunk;
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/* counts the number of samples to put in indx chunk
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* useful for raw audio where usually there are more than
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* 1 sample in each GstBuffer */
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gint samples;
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/* extra data */
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GstBuffer *auds_codec_data;
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} GstAviAudioPad;
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typedef struct _GstAviCollectData {
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/* extend the CollectData */
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GstCollectData collect;
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GstAviPad *avipad;
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} GstAviCollectData;
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struct _GstAviMux {
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GstElement element;
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/* pads */
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GstPad *srcpad;
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/* sinkpads, video first */
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GSList *sinkpads;
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/* video restricted to 1 pad */
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guint video_pads, audio_pads;
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GstCollectPads *collect;
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/* the AVI header */
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/* still some single stream video data in mux struct */
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gst_riff_avih avi_hdr;
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/* total number of (video) frames */
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guint32 total_frames;
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/* amount of total data (bytes) */
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guint64 total_data;
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/* amount of data (bytes) in the AVI/AVIX block;
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* actually the movi list, so counted from and including the movi tag */
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guint32 data_size, datax_size;
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/* num (video) frames in the AVI/AVIX block */
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guint32 num_frames, numx_frames;
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/* size of hdrl list, including tag as usual */
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/* total size of extra codec data */
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guint32 codec_data_size;
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/* state info */
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gboolean write_header;
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gboolean restart;
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/* tags */
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GstTagList *tags_snap;
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/* information about the AVI index ('idx') */
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gst_riff_index_entry *idx;
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gint idx_index, idx_count;
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/* offset of *chunk* (relative to a base offset); entered in the index */
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guint32 idx_offset;
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/* size of idx1 chunk (including! chunk header and size bytes) */
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guint32 idx_size;
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/* are we a big file already? */
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gboolean is_bigfile;
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guint64 avix_start;
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/* whether to use "large AVI files" or just stick to small indexed files */
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gboolean enable_large_avi;
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};
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struct _GstAviMuxClass {
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GstElementClass parent_class;
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};
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GType gst_avi_mux_get_type(void);
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G_END_DECLS
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#endif /* __GST_AVI_MUX_H__ */
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