chromium/third_party/ffmpeg/libavcodec/dv_profile.h

/*
 * 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_DV_PROFILE_H
#define AVCODEC_DV_PROFILE_H

#include <stdint.h>

#include "libavutil/pixfmt.h"
#include "libavutil/rational.h"

/* minimum number of bytes to read from a DV stream in order to
 * determine the profile */
#define DV_PROFILE_BYTES …


/*
 * AVDVProfile is used to express the differences between various
 * DV flavors. For now it's primarily used for differentiating
 * 525/60 and 625/50, but the plans are to use it for various
 * DV specs as well (e.g. SMPTE314M vs. IEC 61834).
 */
AVDVProfile;

/**
 * Get a DV profile for the provided compressed frame.
 *
 * @param sys the profile used for the previous frame, may be NULL
 * @param frame the compressed data buffer
 * @param buf_size size of the buffer in bytes
 * @return the DV profile for the supplied data or NULL on failure
 */
const AVDVProfile *av_dv_frame_profile(const AVDVProfile *sys,
                                       const uint8_t *frame, unsigned buf_size);

/**
 * Get a DV profile for the provided stream parameters.
 */
const AVDVProfile *av_dv_codec_profile(int width, int height, enum AVPixelFormat pix_fmt);

/**
 * Get a DV profile for the provided stream parameters.
 * The frame rate is used as a best-effort parameter.
 */
const AVDVProfile *av_dv_codec_profile2(int width, int height, enum AVPixelFormat pix_fmt, AVRational frame_rate);

#endif /* AVCODEC_DV_PROFILE_H */