libavcodec/internal.h

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/*
 * 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_INTERNAL_H
#define AVCODEC_INTERNAL_H

#include <stdint.h>

#include "libavutil/mathematics.h"
#include "libavutil/pixfmt.h"
#include "avcodec.h"

typedef struct InternalBuffer {
    uint8_t *base[AV_NUM_DATA_POINTERS];
    uint8_t *data[AV_NUM_DATA_POINTERS];
    int linesize[AV_NUM_DATA_POINTERS];
    int width;
    int height;
    enum PixelFormat pix_fmt;
    uint8_t **extended_data;
    int audio_data_size;
    int nb_channels;
} InternalBuffer;

typedef struct AVCodecInternal {
    int buffer_count;

    InternalBuffer *buffer;

    int is_copy;

#if FF_API_OLD_DECODE_AUDIO

    int sample_count;
#endif

    int last_audio_frame;

    uint8_t *byte_buffer;
    unsigned int byte_buffer_size;
} AVCodecInternal;

struct AVCodecDefault {
    const uint8_t *key;
    const uint8_t *value;
};

int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt);

AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt);

int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b);

unsigned int avpriv_toupper4(unsigned int x);

void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic);

void ff_packet_free_side_data(AVPacket *pkt);

int avpriv_lock_avformat(void);
int avpriv_unlock_avformat(void);

#define FF_MAX_EXTRADATA_SIZE ((1 << 28) - FF_INPUT_BUFFER_PADDING_SIZE)

int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size);

int ff_alloc_packet(AVPacket *avpkt, int size);

static av_always_inline int64_t ff_samples_to_time_base(AVCodecContext *avctx,
                                                        int64_t samples)
{
    if(samples == AV_NOPTS_VALUE)
        return AV_NOPTS_VALUE;
    return av_rescale_q(samples, (AVRational){ 1, avctx->sample_rate },
                        avctx->time_base);
}

int ff_thread_can_start_frame(AVCodecContext *avctx);

#endif /* AVCODEC_INTERNAL_H */

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