libavcodec/internal.h

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * FFmpeg is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with FFmpeg; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 /**
  20  * @file libavcodec/internal.h
  21  * common internal api header.
  22  */
  23
  24 #ifndef AVCODEC_INTERNAL_H
  25 #define AVCODEC_INTERNAL_H
  26
  27 #include <stdint.h>
  28 #include "avcodec.h"
  29
  30 /**
  31  * Logs a generic warning message about a missing feature.
  32  * @param[in] avc a pointer to an arbitrary struct of which the first field is
  33  * a pointer to an AVClass struct
  34  * @param[in] feature string containing the name of the missing feature
  35  * @param[in] want_sample indicates if samples are wanted which exhibit this feature.
  36  * If \p want_sample is non-zero, additional verbage will be added to the log
  37  * message which tells the user how to report samples to the development
  38  * mailing list.
  39  */
  40 void ff_log_missing_feature(void *avc, const char *feature, int want_sample);
  41
  42 /**
  43  * Logs a generic warning message asking for a sample.
  44  * @param[in] avc a pointer to an arbitrary struct of which the first field is
  45  * a pointer to an AVClass struct
  46  * @param[in] msg string containing an optional message, or NULL if no message
  47  */
  48 void ff_log_ask_for_sample(void *avc, const char *msg);
  49
  50 /**
  51  * Determines whether \p pix_fmt is a hardware accelerated format.
  52  */
  53 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt);
  54
  55 /**
  56  * Returns the hardware accelerated codec for codec \p codec_id and
  57  * pixel format \p pix_fmt.
  58  *
  59  * @param codec_id the codec to match
  60  * @param pix_fmt the pixel format to match
  61  * @return the hardware accelerated codec, or NULL if none was found.
  62  */
  63 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt);
  64
  65 #endif /* AVCODEC_INTERNAL_H */