1 /*****************************************************************************
2 * vlc_es.h: Elementary stream formats descriptions
3 *****************************************************************************
4 * Copyright (C) 1999-2012 VLC authors and VideoLAN
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
27 #include <vlc_common.h>
28 #include <vlc_fourcc.h>
29 #include <vlc_viewpoint.h>
33 * This file defines the elementary streams format types
41 #define VIDEO_PALETTE_COLORS_MAX 256
43 struct video_palette_t
45 int i_entries
; /**< to keep the compatibility with libavcodec's palette */
46 uint8_t palette
[VIDEO_PALETTE_COLORS_MAX
][4]; /**< 4-byte RGBA/YUVA palette */
50 * audio replay gain description
52 #define AUDIO_REPLAY_GAIN_MAX (2)
53 #define AUDIO_REPLAY_GAIN_TRACK (0)
54 #define AUDIO_REPLAY_GAIN_ALBUM (1)
57 /* true if we have the peak value */
58 bool pb_peak
[AUDIO_REPLAY_GAIN_MAX
];
59 /* peak value where 1.0 means full sample value */
60 float pf_peak
[AUDIO_REPLAY_GAIN_MAX
];
62 /* true if we have the gain value */
63 bool pb_gain
[AUDIO_REPLAY_GAIN_MAX
];
64 /* gain value in dB */
65 float pf_gain
[AUDIO_REPLAY_GAIN_MAX
];
66 } audio_replay_gain_t
;
72 typedef enum audio_channel_type_t
74 AUDIO_CHANNEL_TYPE_BITMAP
,
75 AUDIO_CHANNEL_TYPE_AMBISONICS
,
76 } audio_channel_type_t
;
79 * audio format description
83 vlc_fourcc_t i_format
; /**< audio format fourcc */
84 unsigned int i_rate
; /**< audio sample-rate */
86 /* Describes the channels configuration of the samples (ie. number of
87 * channels which are available in the buffer, and positions). */
88 uint16_t i_physical_channels
;
90 /* Describes the chan mode, either set from the input
91 * (demux/codec/packetizer) or overridden by the user, used by audio
96 audio_channel_type_t channel_type
;
98 /* Optional - for A/52, SPDIF and DTS types : */
99 /* Bytes used by one compressed frame, depends on bitrate. */
100 unsigned int i_bytes_per_frame
;
102 /* Number of sampleframes contained in one compressed frame. */
103 unsigned int i_frame_length
;
104 /* Please note that it may be completely arbitrary - buffers are not
105 * obliged to contain a integral number of so-called "frames". It's
106 * just here for the division :
107 * buffer_size = i_nb_samples * i_bytes_per_frame / i_frame_length
110 /* FIXME ? (used by the codecs) */
111 unsigned i_bitspersample
;
112 unsigned i_blockalign
;
113 uint8_t i_channels
; /* must be <=32 */
116 /* Values available for audio channels */
117 #define AOUT_CHAN_CENTER 0x1
118 #define AOUT_CHAN_LEFT 0x2
119 #define AOUT_CHAN_RIGHT 0x4
120 #define AOUT_CHAN_REARCENTER 0x10
121 #define AOUT_CHAN_REARLEFT 0x20
122 #define AOUT_CHAN_REARRIGHT 0x40
123 #define AOUT_CHAN_MIDDLELEFT 0x100
124 #define AOUT_CHAN_MIDDLERIGHT 0x200
125 #define AOUT_CHAN_LFE 0x1000
127 #define AOUT_CHANS_FRONT (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT)
128 #define AOUT_CHANS_MIDDLE (AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT)
129 #define AOUT_CHANS_REAR (AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT)
130 #define AOUT_CHANS_CENTER (AOUT_CHAN_CENTER | AOUT_CHAN_REARCENTER)
132 #define AOUT_CHANS_STEREO AOUT_CHANS_2_0
133 #define AOUT_CHANS_2_0 (AOUT_CHANS_FRONT)
134 #define AOUT_CHANS_2_1 (AOUT_CHANS_FRONT | AOUT_CHAN_LFE)
135 #define AOUT_CHANS_3_0 (AOUT_CHANS_FRONT | AOUT_CHAN_CENTER)
136 #define AOUT_CHANS_3_1 (AOUT_CHANS_3_0 | AOUT_CHAN_LFE)
137 #define AOUT_CHANS_4_0 (AOUT_CHANS_FRONT | AOUT_CHANS_REAR)
138 #define AOUT_CHANS_4_1 (AOUT_CHANS_4_0 | AOUT_CHAN_LFE)
139 #define AOUT_CHANS_5_0 (AOUT_CHANS_4_0 | AOUT_CHAN_CENTER)
140 #define AOUT_CHANS_5_1 (AOUT_CHANS_5_0 | AOUT_CHAN_LFE)
141 #define AOUT_CHANS_6_0 (AOUT_CHANS_4_0 | AOUT_CHANS_MIDDLE)
142 #define AOUT_CHANS_7_0 (AOUT_CHANS_6_0 | AOUT_CHAN_CENTER)
143 #define AOUT_CHANS_7_1 (AOUT_CHANS_5_1 | AOUT_CHANS_MIDDLE)
144 #define AOUT_CHANS_8_1 (AOUT_CHANS_7_1 | AOUT_CHAN_REARCENTER)
146 #define AOUT_CHANS_4_0_MIDDLE (AOUT_CHANS_FRONT | AOUT_CHANS_MIDDLE)
147 #define AOUT_CHANS_4_CENTER_REAR (AOUT_CHANS_FRONT | AOUT_CHANS_CENTER)
148 #define AOUT_CHANS_5_0_MIDDLE (AOUT_CHANS_4_0_MIDDLE | AOUT_CHAN_CENTER)
149 #define AOUT_CHANS_6_1_MIDDLE (AOUT_CHANS_5_0_MIDDLE | AOUT_CHAN_REARCENTER | AOUT_CHAN_LFE)
151 /* Maximum number of mapped channels (or the maximum of bits set in
152 * i_physical_channels) */
153 #define AOUT_CHAN_MAX 9
154 /* Maximum number of unmapped channels */
155 #define INPUT_CHAN_MAX 64
157 /* Values available for i_chan_mode only */
158 #define AOUT_CHANMODE_DUALMONO 0x1
159 #define AOUT_CHANMODE_DOLBYSTEREO 0x2
162 * Picture orientation.
164 typedef enum video_orientation_t
166 ORIENT_TOP_LEFT
= 0, /**< Top line represents top, left column left. */
167 ORIENT_TOP_RIGHT
, /**< Flipped horizontally */
168 ORIENT_BOTTOM_LEFT
, /**< Flipped vertically */
169 ORIENT_BOTTOM_RIGHT
, /**< Rotated 180 degrees */
170 ORIENT_LEFT_TOP
, /**< Transposed */
171 ORIENT_LEFT_BOTTOM
, /**< Rotated 90 degrees clockwise */
172 ORIENT_RIGHT_TOP
, /**< Rotated 90 degrees anti-clockwise */
173 ORIENT_RIGHT_BOTTOM
, /**< Anti-transposed */
175 ORIENT_NORMAL
= ORIENT_TOP_LEFT
,
176 ORIENT_TRANSPOSED
= ORIENT_LEFT_TOP
,
177 ORIENT_ANTI_TRANSPOSED
= ORIENT_RIGHT_BOTTOM
,
178 ORIENT_HFLIPPED
= ORIENT_TOP_RIGHT
,
179 ORIENT_VFLIPPED
= ORIENT_BOTTOM_LEFT
,
180 ORIENT_ROTATED_180
= ORIENT_BOTTOM_RIGHT
,
181 ORIENT_ROTATED_270
= ORIENT_LEFT_BOTTOM
,
182 ORIENT_ROTATED_90
= ORIENT_RIGHT_TOP
,
183 } video_orientation_t
;
184 /** Convert EXIF orientation to enum video_orientation_t */
185 #define ORIENT_FROM_EXIF(exif) ((0x57642310U >> (4 * ((exif) - 1))) & 7)
186 /** Convert enum video_orientation_t to EXIF */
187 #define ORIENT_TO_EXIF(orient) ((0x76853421U >> (4 * (orient))) & 15)
188 /** If the orientation is natural or mirrored */
189 #define ORIENT_IS_MIRROR(orient) parity(orient)
190 /** If the orientation swaps dimensions */
191 #define ORIENT_IS_SWAP(orient) (((orient) & 4) != 0)
192 /** Applies horizontal flip to an orientation */
193 #define ORIENT_HFLIP(orient) ((orient) ^ 1)
194 /** Applies vertical flip to an orientation */
195 #define ORIENT_VFLIP(orient) ((orient) ^ 2)
196 /** Applies horizontal flip to an orientation */
197 #define ORIENT_ROTATE_180(orient) ((orient) ^ 3)
199 typedef enum video_transform_t
201 TRANSFORM_IDENTITY
= ORIENT_NORMAL
,
202 TRANSFORM_HFLIP
= ORIENT_HFLIPPED
,
203 TRANSFORM_VFLIP
= ORIENT_VFLIPPED
,
204 TRANSFORM_R180
= ORIENT_ROTATED_180
,
205 TRANSFORM_R270
= ORIENT_ROTATED_270
,
206 TRANSFORM_R90
= ORIENT_ROTATED_90
,
207 TRANSFORM_TRANSPOSE
= ORIENT_TRANSPOSED
,
208 TRANSFORM_ANTI_TRANSPOSE
= ORIENT_ANTI_TRANSPOSED
211 typedef enum video_multiview_mode_t
213 /* No stereoscopy: 2D picture. */
216 /* Side-by-side with left eye first. */
217 MULTIVIEW_STEREO_SBS
,
219 /* Top-bottom with left eye first. */
222 /* Row sequential with left eye first. */
223 MULTIVIEW_STEREO_ROW
,
225 /* Column sequential with left eye first. */
226 MULTIVIEW_STEREO_COL
,
228 /* Frame sequential with left eye first. */
229 MULTIVIEW_STEREO_FRAME
,
231 /* Checkerboard pattern with left eye first. */
232 MULTIVIEW_STEREO_CHECKERBOARD
,
233 } video_multiview_mode_t
;
236 * Video projection mode.
238 typedef enum video_projection_mode_t
240 PROJECTION_MODE_RECTANGULAR
= 0,
241 PROJECTION_MODE_EQUIRECTANGULAR
,
243 PROJECTION_MODE_CUBEMAP_LAYOUT_STANDARD
= 0x100,
244 } video_projection_mode_t
;
247 * Video color primaries (a.k.a. chromacities)
249 typedef enum video_color_primaries_t
251 COLOR_PRIMARIES_UNDEF
,
252 COLOR_PRIMARIES_BT601_525
,
253 COLOR_PRIMARIES_BT601_625
,
254 COLOR_PRIMARIES_BT709
,
255 COLOR_PRIMARIES_BT2020
,
256 COLOR_PRIMARIES_DCI_P3
,
257 COLOR_PRIMARIES_FCC1953
,
258 #define COLOR_PRIMARIES_SRGB COLOR_PRIMARIES_BT709
259 #define COLOR_PRIMARIES_SMTPE_170 COLOR_PRIMARIES_BT601_525
260 #define COLOR_PRIMARIES_SMTPE_240 COLOR_PRIMARIES_BT601_525 /* Only differs from 1e10-4 in white Y */
261 #define COLOR_PRIMARIES_SMTPE_RP145 COLOR_PRIMARIES_BT601_525
262 #define COLOR_PRIMARIES_EBU_3213 COLOR_PRIMARIES_BT601_625
263 #define COLOR_PRIMARIES_BT470_BG COLOR_PRIMARIES_BT601_625
264 #define COLOR_PRIMARIES_BT470_M COLOR_PRIMARIES_FCC1953
265 #define COLOR_PRIMARIES_MAX COLOR_PRIMARIES_FCC1953
266 } video_color_primaries_t
;
269 * Video transfer functions
271 typedef enum video_transfer_func_t
274 TRANSFER_FUNC_LINEAR
,
275 TRANSFER_FUNC_SRGB
/*< Gamma 2.2 */,
276 TRANSFER_FUNC_BT470_BG
,
277 TRANSFER_FUNC_BT470_M
,
279 TRANSFER_FUNC_SMPTE_ST2084
,
280 TRANSFER_FUNC_SMPTE_240
,
282 #define TRANSFER_FUNC_BT2020 TRANSFER_FUNC_BT709
283 #define TRANSFER_FUNC_SMPTE_170 TRANSFER_FUNC_BT709
284 #define TRANSFER_FUNC_SMPTE_274 TRANSFER_FUNC_BT709
285 #define TRANSFER_FUNC_SMPTE_293 TRANSFER_FUNC_BT709
286 #define TRANSFER_FUNC_SMPTE_296 TRANSFER_FUNC_BT709
287 #define TRANSFER_FUNC_ARIB_B67 TRANSFER_FUNC_HLG
288 #define TRANSFER_FUNC_MAX TRANSFER_FUNC_HLG
289 } video_transfer_func_t
;
292 * Video color space (i.e. YCbCr matrices)
294 typedef enum video_color_space_t
300 #define COLOR_SPACE_SRGB COLOR_SPACE_BT709
301 #define COLOR_SPACE_SMPTE_170 COLOR_SPACE_BT601
302 #define COLOR_SPACE_SMPTE_240 COLOR_SPACE_SMPTE_170
303 #define COLOR_SPACE_MAX COLOR_SPACE_BT2020
304 } video_color_space_t
;
307 * Video chroma location
309 typedef enum video_chroma_location_t
311 CHROMA_LOCATION_UNDEF
,
312 CHROMA_LOCATION_LEFT
, /*< Most common in MPEG-2 Video, H.264/265 */
313 CHROMA_LOCATION_CENTER
, /*< Most common in MPEG-1 Video, JPEG */
314 CHROMA_LOCATION_TOP_LEFT
,
315 CHROMA_LOCATION_TOP_CENTER
,
316 CHROMA_LOCATION_BOTTOM_LEFT
,
317 CHROMA_LOCATION_BOTTOM_CENTER
,
318 #define CHROMA_LOCATION_MAX CHROMA_LOCATION_BOTTOM_CENTER
319 } video_chroma_location_t
;
322 * video format description
324 struct video_format_t
326 vlc_fourcc_t i_chroma
; /**< picture chroma */
328 unsigned int i_width
; /**< picture width */
329 unsigned int i_height
; /**< picture height */
330 unsigned int i_x_offset
; /**< start offset of visible area */
331 unsigned int i_y_offset
; /**< start offset of visible area */
332 unsigned int i_visible_width
; /**< width of visible area */
333 unsigned int i_visible_height
; /**< height of visible area */
335 unsigned int i_bits_per_pixel
; /**< number of bits per pixel */
337 unsigned int i_sar_num
; /**< sample/pixel aspect ratio */
338 unsigned int i_sar_den
;
340 unsigned int i_frame_rate
; /**< frame rate numerator */
341 unsigned int i_frame_rate_base
; /**< frame rate denominator */
343 uint32_t i_rmask
, i_gmask
, i_bmask
; /**< color masks for RGB chroma */
344 int i_rrshift
, i_lrshift
;
345 int i_rgshift
, i_lgshift
;
346 int i_rbshift
, i_lbshift
;
347 video_palette_t
*p_palette
; /**< video palette from demuxer */
348 video_orientation_t orientation
; /**< picture orientation */
349 video_color_primaries_t primaries
; /**< color primaries */
350 video_transfer_func_t transfer
; /**< transfer function */
351 video_color_space_t space
; /**< YCbCr color space */
352 bool b_color_range_full
; /**< 0-255 instead of 16-235 */
353 video_chroma_location_t chroma_location
; /**< YCbCr chroma location */
355 video_multiview_mode_t multiview_mode
; /** Multiview mode, 2D, 3D */
357 video_projection_mode_t projection_mode
; /**< projection mode */
358 vlc_viewpoint_t pose
;
360 /* similar to SMPTE ST 2086 mastering display color volume */
361 uint16_t primaries
[3*2]; /* G,B,R / x,y */
362 uint16_t white_point
[2]; /* x,y */
363 uint32_t max_luminance
;
364 uint32_t min_luminance
;
367 /* similar to CTA-861.3 content light level */
368 uint16_t MaxCLL
; /* max content light level */
369 uint16_t MaxFALL
; /* max frame average light level */
371 uint32_t i_cubemap_padding
; /**< padding in pixels of the cube map faces */
375 * Initialize a video_format_t structure with chroma 'i_chroma'
376 * \param p_src pointer to video_format_t structure
377 * \param i_chroma chroma value to use
379 static inline void video_format_Init( video_format_t
*p_src
, vlc_fourcc_t i_chroma
)
381 memset( p_src
, 0, sizeof( video_format_t
) );
382 p_src
->i_chroma
= i_chroma
;
383 vlc_viewpoint_init( &p_src
->pose
);
387 * Copy video_format_t including the palette
388 * \param p_dst video_format_t to copy to
389 * \param p_src video_format_t to copy from
391 static inline int video_format_Copy( video_format_t
*p_dst
, const video_format_t
*p_src
)
393 memcpy( p_dst
, p_src
, sizeof( *p_dst
) );
394 if( p_src
->p_palette
)
396 p_dst
->p_palette
= (video_palette_t
*) malloc( sizeof( video_palette_t
) );
397 if( !p_dst
->p_palette
)
399 memcpy( p_dst
->p_palette
, p_src
->p_palette
, sizeof( *p_dst
->p_palette
) );
404 static inline void video_format_AdjustColorSpace( video_format_t
*p_fmt
)
406 if ( p_fmt
->primaries
== COLOR_PRIMARIES_UNDEF
)
408 if ( p_fmt
->i_visible_height
> 576 ) // HD
409 p_fmt
->primaries
= COLOR_PRIMARIES_BT709
;
410 else if ( p_fmt
->i_visible_height
> 525 ) // PAL
411 p_fmt
->primaries
= COLOR_PRIMARIES_BT601_625
;
413 p_fmt
->primaries
= COLOR_PRIMARIES_BT601_525
;
416 if ( p_fmt
->transfer
== TRANSFER_FUNC_UNDEF
)
418 if ( p_fmt
->i_visible_height
> 576 ) // HD
419 p_fmt
->transfer
= TRANSFER_FUNC_BT709
;
421 p_fmt
->transfer
= TRANSFER_FUNC_SRGB
;
424 if ( p_fmt
->space
== COLOR_SPACE_UNDEF
)
426 if ( p_fmt
->i_visible_height
> 576 ) // HD
427 p_fmt
->space
= COLOR_SPACE_BT709
;
429 p_fmt
->space
= COLOR_SPACE_BT601
;
434 * Cleanup and free palette of this video_format_t
435 * \param p_src video_format_t structure to clean
437 static inline void video_format_Clean( video_format_t
*p_src
)
439 free( p_src
->p_palette
);
440 memset( p_src
, 0, sizeof( video_format_t
) );
444 * It will fill up a video_format_t using the given arguments.
445 * Note that the video_format_t must already be initialized.
447 VLC_API
void video_format_Setup( video_format_t
*, vlc_fourcc_t i_chroma
,
448 int i_width
, int i_height
, int i_visible_width
, int i_visible_height
,
449 int i_sar_num
, int i_sar_den
);
452 * It will copy the crop properties from a video_format_t to another.
454 VLC_API
void video_format_CopyCrop( video_format_t
*, const video_format_t
* );
457 * It will compute the crop/ar properties when scaling.
459 VLC_API
void video_format_ScaleCropAr( video_format_t
*, const video_format_t
* );
462 * This function "normalizes" the formats orientation, by switching the a/r according to the orientation,
463 * producing a format whose orientation is ORIENT_NORMAL. It makes a shallow copy (pallette is not alloc'ed).
465 VLC_API
void video_format_ApplyRotation(video_format_t
* /*restrict*/ out
,
466 const video_format_t
*in
);
469 * This function applies the transform operation to fmt.
471 VLC_API
void video_format_TransformBy(video_format_t
*fmt
, video_transform_t transform
);
474 * This function applies the transforms necessary to fmt so that the resulting fmt
475 * has the dst_orientation.
477 VLC_API
void video_format_TransformTo(video_format_t
*fmt
, video_orientation_t dst_orientation
);
480 * Returns the operation required to transform src into dst.
482 VLC_API video_transform_t
video_format_GetTransform(video_orientation_t src
, video_orientation_t dst
);
485 * This function will check if the first video format is similar
488 VLC_API
bool video_format_IsSimilar( const video_format_t
*, const video_format_t
* );
491 * It prints details about the given video_format_t
493 VLC_API
void video_format_Print( vlc_object_t
*, const char *, const video_format_t
* );
496 static inline video_transform_t
transform_Inverse( video_transform_t transform
)
498 switch ( transform
) {
500 return TRANSFORM_R270
;
502 return TRANSFORM_R90
;
508 * subtitles format description
512 /* the character encoding of the text of the subtitle.
513 * all gettext recognized shorts can be used */
517 int i_x_origin
; /**< x coordinate of the subtitle. 0 = left */
518 int i_y_origin
; /**< y coordinate of the subtitle. 0 = top */
523 uint32_t palette
[16+1];
525 /* the width of the original movie the spu was extracted from */
526 int i_original_frame_width
;
527 /* the height of the original movie the spu was extracted from */
528 int i_original_frame_height
;
543 /* Reorder depth of transport video, -1 for no reordering */
548 #define SPU_PALETTE_DEFINED 0xbeefbeef
551 * ES language definition
553 typedef struct extra_languages_t
556 char *psz_description
;
560 enum es_format_category_e
568 #define ES_CATEGORY_COUNT (DATA_ES + 1)
571 * ES format definition
573 #define ES_PRIORITY_NOT_SELECTABLE -2
574 #define ES_PRIORITY_NOT_DEFAULTABLE -1
575 #define ES_PRIORITY_SELECTABLE_MIN 0
576 #define ES_PRIORITY_MIN ES_PRIORITY_NOT_SELECTABLE
579 enum es_format_category_e i_cat
; /**< ES category */
580 vlc_fourcc_t i_codec
; /**< FOURCC value as used in vlc */
581 vlc_fourcc_t i_original_fourcc
; /**< original FOURCC from the container */
583 int i_id
; /**< es identifier, where means
584 -1: let the core mark the right id
586 int i_group
; /**< group identifier, where means:
588 >= 0 then a "group" (program) is created
590 int i_priority
; /**< priority, where means:
591 -2 : mean not selectable by the users
592 -1 : mean not selected by default even
596 char *psz_language
; /**< human-readable language name */
597 char *psz_description
; /**< human-readable description of language */
598 unsigned i_extra_languages
; /**< length in bytes of extra language data pointer */
599 extra_languages_t
*p_extra_languages
; /**< extra language data needed by some decoders */
603 audio_format_t audio
; /**< description of audio format */
604 audio_replay_gain_t audio_replay_gain
; /*< audio replay gain information */
606 video_format_t video
; /**< description of video format */
607 subs_format_t subs
; /**< description of subtitle format */
610 unsigned int i_bitrate
; /**< bitrate of this ES */
611 int i_profile
; /**< codec specific information (like real audio flavor, mpeg audio layer, h264 profile ...) */
612 int i_level
; /**< codec specific information: indicates maximum restrictions on the stream (resolution, bitrate, codec features ...) */
614 bool b_packetized
; /**< whether the data is packetized (ie. not truncated) */
615 int i_extra
; /**< length in bytes of extra data pointer */
616 void *p_extra
; /**< extra data needed by some decoders or muxers */
621 * This function will fill all RGB shift from RGB masks.
623 VLC_API
void video_format_FixRgb( video_format_t
* );
626 * This function will initialize a es_format_t structure.
628 VLC_API
void es_format_Init( es_format_t
*, int i_cat
, vlc_fourcc_t i_codec
);
631 * This function will initialize a es_format_t structure from a video_format_t.
633 VLC_API
void es_format_InitFromVideo( es_format_t
*, const video_format_t
* );
636 * This functions will copy a es_format_t.
638 VLC_API
int es_format_Copy( es_format_t
*p_dst
, const es_format_t
*p_src
);
641 * This function will clean up a es_format_t and release all associated
643 * You can call it multiple times on the same structure.
645 VLC_API
void es_format_Clean( es_format_t
*fmt
);
648 * This function will check if the first ES format is similar
651 * All descriptive fields are ignored.
653 VLC_API
bool es_format_IsSimilar( const es_format_t
*, const es_format_t
* );
656 * Changes ES format to another category
657 * Format must have been properly initialized
659 static inline void es_format_Change( es_format_t
*fmt
, int i_cat
, vlc_fourcc_t i_codec
)
661 es_format_Clean( fmt
);
662 es_format_Init( fmt
, i_cat
, i_codec
);