+/*****************************************************************************
+ * vlc_es.h
+ *****************************************************************************
+ * Copyright (C) 1999-2001 VideoLAN
+ * $Id: vlc_es.h,v 1.1 2003/11/20 22:10:55 fenrir Exp $
+ *
+ * Authors: Laurent Aimar <fenrir@via.ecp.fr>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+#ifndef _VLC_ES_H
+#define _VLC_ES_H 1
+
+/**
+ * Description of a audio frame
+ */
+struct audio_format_t
+{
+ vlc_fourcc_t i_format;
+
+ unsigned int i_rate;
+
+ /* Describes the channels configuration of the samples (ie. number of
+ * channels which are available in the buffer, and positions). */
+ uint32_t i_physical_channels;
+
+ /* Describes from which original channels, before downmixing, the
+ * buffer is derived. */
+ uint32_t i_original_channels;
+
+ /* Optional - for A/52, SPDIF and DTS types : */
+ /* Bytes used by one compressed frame, depends on bitrate. */
+ unsigned int i_bytes_per_frame;
+
+ /* Number of sampleframes contained in one compressed frame. */
+ unsigned int i_frame_length;
+ /* Please note that it may be completely arbitrary - buffers are not
+ * obliged to contain a integral number of so-called "frames". It's
+ * just here for the division :
+ * buffer_size = i_nb_samples * i_bytes_per_frame / i_frame_length
+ */
+
+ /* FIXME ? (used by the codecs) */
+ int i_channels;
+ int i_blockalign;
+ int i_bitspersample;
+};
+
+/**
+ * Description of a video frame
+ */
+struct video_format_t
+{
+ vlc_fourcc_t i_chroma; /**< picture chroma */
+ unsigned int i_aspect; /**< aspect ratio */
+
+ unsigned int i_width; /**< picture width */
+ unsigned int i_height; /**< picture height */
+ unsigned int i_x_offset; /**< start offset of visible area */
+ unsigned int i_y_offset; /**< start offset of visible area */
+ unsigned int i_visible_width; /**< width of visible area */
+ unsigned int i_visible_height; /**< height of visible area */
+
+ unsigned int i_bits_per_pixel; /**< number of bits per pixel */
+
+ unsigned int i_frame_rate; /**< frame rate numerator */
+ unsigned int i_frame_rate_base; /**< frame rate denominator */
+};
+
+/**
+ * Description of subs
+ */
+typedef struct subs_format_t
+{
+ char *psz_encoding;
+
+} subs_format_t;
+
+/**
+ * ES definition
+ */
+typedef struct
+{
+ int i_cat;
+ vlc_fourcc_t i_codec;
+
+ int i_group; /* -1 : standalone
+ >= 0 then a "group" (program) is created
+ for each value */
+ int i_priority; /* -2 : mean not selectable by the users
+ -1 : mean not selected by default even
+ when no other stream
+ >=0: priority */
+ char *psz_language;
+ char *psz_description;
+
+ audio_format_t audio;
+ video_format_t video;
+ subs_format_t subs;
+
+ int i_bitrate;
+
+ int i_extra;
+ void *p_extra;
+
+} es_format_t;
+
+static inline void es_format_Init( es_format_t *fmt,
+ int i_cat, vlc_fourcc_t i_codec )
+{
+ fmt->i_cat = i_cat;
+ fmt->i_codec = i_codec;
+ fmt->i_group = 0;
+ fmt->i_priority = 0;
+ fmt->psz_language = NULL;
+ fmt->psz_description = NULL;
+
+ memset( &fmt->audio, 0, sizeof(audio_format_t) );
+ memset( &fmt->video, 0, sizeof(video_format_t) );
+ memset( &fmt->subs, 0, sizeof(subs_format_t) );
+
+ fmt->i_bitrate = 0;
+ fmt->i_extra = 0;
+ fmt->p_extra = NULL;
+}
+
+static inline void es_format_Copy( es_format_t *dst, es_format_t *src )
+{
+ memcpy( dst, src, sizeof( es_format_t ) );
+ if( src->i_extra > 0 )
+ {
+ dst->p_extra = malloc( src->i_extra );
+ memcpy( dst->p_extra, src->p_extra,
+ src->i_extra );
+ }
+ else
+ {
+ dst->i_extra = 0;
+ dst->p_extra = NULL;
+ }
+}
+
+#endif
+