/* * Codec IDs * * 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
*/
/** * Identify the syntax and semantics of the bitstream. * The principle is roughly: * Two decoders with the same ID can decode the same streams. * Two encoders with the same ID can encode compatible streams. * There may be slight deviations from the principle due to implementation * details. * * If you add a codec ID to this list, add it so that * 1. no value of an existing codec ID changes (that would break ABI), * 2. it is as close as possible to similar codecs * * After adding new codec IDs, do not forget to add an entry to the codec * descriptor list and bump libavcodec minor version.
*/ enum AVCodecID {
AV_CODEC_ID_NONE,
/* subtitle codecs */
AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs.
AV_CODEC_ID_DVD_SUBTITLE = 0x17000,
AV_CODEC_ID_DVB_SUBTITLE,
AV_CODEC_ID_TEXT, ///< raw UTF-8 text
AV_CODEC_ID_XSUB,
AV_CODEC_ID_SSA,
AV_CODEC_ID_MOV_TEXT,
AV_CODEC_ID_HDMV_PGS_SUBTITLE,
AV_CODEC_ID_DVB_TELETEXT,
AV_CODEC_ID_SRT,
AV_CODEC_ID_MICRODVD,
AV_CODEC_ID_EIA_608,
AV_CODEC_ID_JACOSUB,
AV_CODEC_ID_SAMI,
AV_CODEC_ID_REALTEXT,
AV_CODEC_ID_STL,
AV_CODEC_ID_SUBVIEWER1,
AV_CODEC_ID_SUBVIEWER,
AV_CODEC_ID_SUBRIP,
AV_CODEC_ID_WEBVTT,
AV_CODEC_ID_MPL2,
AV_CODEC_ID_VPLAYER,
AV_CODEC_ID_PJS,
AV_CODEC_ID_ASS,
AV_CODEC_ID_HDMV_TEXT_SUBTITLE,
AV_CODEC_ID_TTML,
AV_CODEC_ID_ARIB_CAPTION,
/* other specific kind of codecs (generally used for attachments) */
AV_CODEC_ID_FIRST_UNKNOWN = 0x18000, ///< A dummy ID pointing at the start of various fake codecs.
AV_CODEC_ID_TTF = 0x18000,
AV_CODEC_ID_SCTE_35, ///< Contain timestamp estimated through PCR of program stream.
AV_CODEC_ID_EPG,
AV_CODEC_ID_BINTEXT,
AV_CODEC_ID_XBIN,
AV_CODEC_ID_IDF,
AV_CODEC_ID_OTF,
AV_CODEC_ID_SMPTE_KLV,
AV_CODEC_ID_DVD_NAV,
AV_CODEC_ID_TIMED_ID3,
AV_CODEC_ID_BIN_DATA,
AV_CODEC_ID_SMPTE_2038,
AV_CODEC_ID_LCEVC,
AV_CODEC_ID_PROBE = 0x19000, ///< codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it
AV_CODEC_ID_MPEG2TS = 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS
* stream (only used by libavformat) */
AV_CODEC_ID_MPEG4SYSTEMS = 0x20001, /**< _FAKE_ codec to indicate a MPEG-4 Systems
* stream (only used by libavformat) */
AV_CODEC_ID_FFMETADATA = 0x21000, ///< Dummy codec for streams containing only metadata information.
AV_CODEC_ID_WRAPPED_AVFRAME = 0x21001, ///< Passthrough codec, AVFrames wrapped in AVPacket /** * Dummy null video codec, useful mainly for development and debugging. * Null encoder/decoder discard all input and never return any output.
*/
AV_CODEC_ID_VNULL, /** * Dummy null audio codec, useful mainly for development and debugging. * Null encoder/decoder discard all input and never return any output.
*/
AV_CODEC_ID_ANULL,
};
/** * Get the type of the given codec.
*/ enum AVMediaType avcodec_get_type(enum AVCodecID codec_id);
/** * Get the name of a codec. * @return a static string identifying the codec; never NULL
*/ constchar *avcodec_get_name(enum AVCodecID id);
/** * Return codec bits per sample. * * @param[in] codec_id the codec * @return Number of bits per sample or zero if unknown for the given codec.
*/ int av_get_bits_per_sample(enum AVCodecID codec_id);
/** * Return codec bits per sample. * Only return non-zero if the bits per sample is exactly correct, not an * approximation. * * @param[in] codec_id the codec * @return Number of bits per sample or zero if unknown for the given codec.
*/ int av_get_exact_bits_per_sample(enum AVCodecID codec_id);
/** * Return a name for the specified profile, if available. * * @param codec_id the ID of the codec to which the requested profile belongs * @param profile the profile value for which a name is requested * @return A name for the profile if found, NULL otherwise. * * @note unlike av_get_profile_name(), which searches a list of profiles * supported by a specific decoder or encoder implementation, this * function searches the list of profiles from the AVCodecDescriptor
*/ constchar *avcodec_profile_name(enum AVCodecID codec_id, int profile);
/** * Return the PCM codec associated with a sample format. * @param be endianness, 0 for little, 1 for big, * -1 (or anything else) for native * @return AV_CODEC_ID_PCM_* or AV_CODEC_ID_NONE
*/ enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be);
/** * @}
*/
#endif// AVCODEC_CODEC_ID_H
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