duckstation

duckstation, but archived from the revision just before upstream changed it to a proprietary software project, this version is the libre one
git clone https://git.neptards.moe/u3shit/duckstation.git
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codec_desc.h (3974B)

      1 /*
      2  * Codec descriptors public API
      3  *
      4  * This file is part of FFmpeg.
      5  *
      6  * FFmpeg is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Lesser General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2.1 of the License, or (at your option) any later version.
     10  *
     11  * FFmpeg is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Lesser General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Lesser General Public
     17  * License along with FFmpeg; if not, write to the Free Software
     18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     19  */
     20 
     21 #ifndef AVCODEC_CODEC_DESC_H
     22 #define AVCODEC_CODEC_DESC_H
     23 
     24 #include "libavutil/avutil.h"
     25 
     26 #include "codec_id.h"
     27 
     28 /**
     29  * @addtogroup lavc_core
     30  * @{
     31  */
     32 
     33 /**
     34  * This struct describes the properties of a single codec described by an
     35  * AVCodecID.
     36  * @see avcodec_descriptor_get()
     37  */
     38 typedef struct AVCodecDescriptor {
     39     enum AVCodecID     id;
     40     enum AVMediaType type;
     41     /**
     42      * Name of the codec described by this descriptor. It is non-empty and
     43      * unique for each codec descriptor. It should contain alphanumeric
     44      * characters and '_' only.
     45      */
     46     const char      *name;
     47     /**
     48      * A more descriptive name for this codec. May be NULL.
     49      */
     50     const char *long_name;
     51     /**
     52      * Codec properties, a combination of AV_CODEC_PROP_* flags.
     53      */
     54     int             props;
     55     /**
     56      * MIME type(s) associated with the codec.
     57      * May be NULL; if not, a NULL-terminated array of MIME types.
     58      * The first item is always non-NULL and is the preferred MIME type.
     59      */
     60     const char *const *mime_types;
     61     /**
     62      * If non-NULL, an array of profiles recognized for this codec.
     63      * Terminated with AV_PROFILE_UNKNOWN.
     64      */
     65     const struct AVProfile *profiles;
     66 } AVCodecDescriptor;
     67 
     68 /**
     69  * Codec uses only intra compression.
     70  * Video and audio codecs only.
     71  */
     72 #define AV_CODEC_PROP_INTRA_ONLY    (1 << 0)
     73 /**
     74  * Codec supports lossy compression. Audio and video codecs only.
     75  * @note a codec may support both lossy and lossless
     76  * compression modes
     77  */
     78 #define AV_CODEC_PROP_LOSSY         (1 << 1)
     79 /**
     80  * Codec supports lossless compression. Audio and video codecs only.
     81  */
     82 #define AV_CODEC_PROP_LOSSLESS      (1 << 2)
     83 /**
     84  * Codec supports frame reordering. That is, the coded order (the order in which
     85  * the encoded packets are output by the encoders / stored / input to the
     86  * decoders) may be different from the presentation order of the corresponding
     87  * frames.
     88  *
     89  * For codecs that do not have this property set, PTS and DTS should always be
     90  * equal.
     91  */
     92 #define AV_CODEC_PROP_REORDER       (1 << 3)
     93 
     94 /**
     95  * Video codec supports separate coding of fields in interlaced frames.
     96  */
     97 #define AV_CODEC_PROP_FIELDS        (1 << 4)
     98 
     99 /**
    100  * Subtitle codec is bitmap based
    101  * Decoded AVSubtitle data can be read from the AVSubtitleRect->pict field.
    102  */
    103 #define AV_CODEC_PROP_BITMAP_SUB    (1 << 16)
    104 /**
    105  * Subtitle codec is text based.
    106  * Decoded AVSubtitle data can be read from the AVSubtitleRect->ass field.
    107  */
    108 #define AV_CODEC_PROP_TEXT_SUB      (1 << 17)
    109 
    110 /**
    111  * @return descriptor for given codec ID or NULL if no descriptor exists.
    112  */
    113 const AVCodecDescriptor *avcodec_descriptor_get(enum AVCodecID id);
    114 
    115 /**
    116  * Iterate over all codec descriptors known to libavcodec.
    117  *
    118  * @param prev previous descriptor. NULL to get the first descriptor.
    119  *
    120  * @return next descriptor or NULL after the last descriptor
    121  */
    122 const AVCodecDescriptor *avcodec_descriptor_next(const AVCodecDescriptor *prev);
    123 
    124 /**
    125  * @return codec descriptor with the given name or NULL if no such descriptor
    126  *         exists.
    127  */
    128 const AVCodecDescriptor *avcodec_descriptor_get_by_name(const char *name);
    129 
    130 /**
    131  * @}
    132  */
    133 
    134 #endif // AVCODEC_CODEC_DESC_H