| /* |
| * Codec descriptors public API |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef AVCODEC_CODEC_DESC_H |
| #define AVCODEC_CODEC_DESC_H |
| |
| #include "libavutil/avutil.h" |
| |
| #include "codec_id.h" |
| |
| /** |
| * @addtogroup lavc_core |
| * @{ |
| */ |
| |
| /** |
| * This struct describes the properties of a single codec described by an |
| * AVCodecID. |
| * @see avcodec_descriptor_get() |
| */ |
| typedef struct AVCodecDescriptor { |
| enum AVCodecID id; |
| enum AVMediaType type; |
| /** |
| * Name of the codec described by this descriptor. It is non-empty and |
| * unique for each codec descriptor. It should contain alphanumeric |
| * characters and '_' only. |
| */ |
| const char *name; |
| /** |
| * A more descriptive name for this codec. May be NULL. |
| */ |
| const char *long_name; |
| /** |
| * Codec properties, a combination of AV_CODEC_PROP_* flags. |
| */ |
| int props; |
| /** |
| * MIME type(s) associated with the codec. |
| * May be NULL; if not, a NULL-terminated array of MIME types. |
| * The first item is always non-NULL and is the preferred MIME type. |
| */ |
| const char *const *mime_types; |
| /** |
| * If non-NULL, an array of profiles recognized for this codec. |
| * Terminated with FF_PROFILE_UNKNOWN. |
| */ |
| const struct AVProfile *profiles; |
| } AVCodecDescriptor; |
| |
| /** |
| * Codec uses only intra compression. |
| * Video and audio codecs only. |
| */ |
| #define AV_CODEC_PROP_INTRA_ONLY (1 << 0) |
| /** |
| * Codec supports lossy compression. Audio and video codecs only. |
| * @note a codec may support both lossy and lossless |
| * compression modes |
| */ |
| #define AV_CODEC_PROP_LOSSY (1 << 1) |
| /** |
| * Codec supports lossless compression. Audio and video codecs only. |
| */ |
| #define AV_CODEC_PROP_LOSSLESS (1 << 2) |
| /** |
| * Codec supports frame reordering. That is, the coded order (the order in which |
| * the encoded packets are output by the encoders / stored / input to the |
| * decoders) may be different from the presentation order of the corresponding |
| * frames. |
| * |
| * For codecs that do not have this property set, PTS and DTS should always be |
| * equal. |
| */ |
| #define AV_CODEC_PROP_REORDER (1 << 3) |
| /** |
| * Subtitle codec is bitmap based |
| * Decoded AVSubtitle data can be read from the AVSubtitleRect->pict field. |
| */ |
| #define AV_CODEC_PROP_BITMAP_SUB (1 << 16) |
| /** |
| * Subtitle codec is text based. |
| * Decoded AVSubtitle data can be read from the AVSubtitleRect->ass field. |
| */ |
| #define AV_CODEC_PROP_TEXT_SUB (1 << 17) |
| |
| /** |
| * @return descriptor for given codec ID or NULL if no descriptor exists. |
| */ |
| const AVCodecDescriptor *avcodec_descriptor_get(enum AVCodecID id); |
| |
| /** |
| * Iterate over all codec descriptors known to libavcodec. |
| * |
| * @param prev previous descriptor. NULL to get the first descriptor. |
| * |
| * @return next descriptor or NULL after the last descriptor |
| */ |
| const AVCodecDescriptor *avcodec_descriptor_next(const AVCodecDescriptor *prev); |
| |
| /** |
| * @return codec descriptor with the given name or NULL if no such descriptor |
| * exists. |
| */ |
| const AVCodecDescriptor *avcodec_descriptor_get_by_name(const char *name); |
| |
| /** |
| * @} |
| */ |
| |
| #endif // AVCODEC_CODEC_DESC_H |