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/*
* Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* data structures common to libschroedinger decoder and encoder
*/
#ifndef AVCODEC_LIBSCHROEDINGER_H
#define AVCODEC_LIBSCHROEDINGER_H
#include <schroedinger/schrobitstream.h>
#include <schroedinger/schroframe.h>
#include "avcodec.h"
typedef struct SchroVideoFormatInfo {
uint16_t width;
uint16_t height;
uint16_t frame_rate_num;
uint16_t frame_rate_denom;
} SchroVideoFormatInfo;
/**
* contains a single encoded frame returned from Dirac or Schroedinger
*/
typedef struct FFSchroEncodedFrame {
/** encoded frame data */
uint8_t *p_encbuf;
/** encoded frame size */
uint32_t size;
/** encoded frame number. Will be used as pts */
uint32_t frame_num;
/** key frame flag. 1 : is key frame , 0 : in not key frame */
uint16_t key_frame;
} FFSchroEncodedFrame;
/**
* queue element
*/
typedef struct FFSchroQueueElement {
/** Data to be stored in queue*/
void *data;
/** Pointer to next element queue */
struct FFSchroQueueElement *next;
} FFSchroQueueElement;
/**
* A simple queue implementation used in libschroedinger
*/
typedef struct FFSchroQueue {
/** Pointer to head of queue */
FFSchroQueueElement *p_head;
/** Pointer to tail of queue */
FFSchroQueueElement *p_tail;
/** Queue size*/
int size;
} FFSchroQueue;
/**
* Initialise the queue
*/
void ff_schro_queue_init(FFSchroQueue *queue);
/**
* Add an element to the end of the queue
*/
int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data);
/**
* Return the first element in the queue
*/
void *ff_schro_queue_pop(FFSchroQueue *queue);
/**
* Free the queue resources. free_func is a function supplied by the caller to
* free any resources allocated by the caller. The data field of the queue
* element is passed to it.
*/
void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *));
static const struct {
enum AVPixelFormat ff_pix_fmt;
SchroChromaFormat schro_pix_fmt;
SchroFrameFormat schro_frame_fmt;
} schro_pixel_format_map[] = {
{ AV_PIX_FMT_YUV420P, SCHRO_CHROMA_420, SCHRO_FRAME_FORMAT_U8_420 },
{ AV_PIX_FMT_YUV422P, SCHRO_CHROMA_422, SCHRO_FRAME_FORMAT_U8_422 },
{ AV_PIX_FMT_YUV444P, SCHRO_CHROMA_444, SCHRO_FRAME_FORMAT_U8_444 },
};
/**
* Returns the video format preset matching the input video dimensions and
* time base.
*/
SchroVideoFormatEnum ff_get_schro_video_format_preset (AVCodecContext *avctx);
/**
* Sets the Schroedinger frame format corresponding to the Schro chroma format
* passed. Returns 0 on success, -1 on failure.
*/
int ff_get_schro_frame_format(SchroChromaFormat schro_chroma_fmt,
SchroFrameFormat *schro_frame_fmt);
/**
* Create a Schro frame based on the dimensions and frame format
* passed. Returns a pointer to a frame on success, NULL on failure.
*/
SchroFrame *ff_create_schro_frame(AVCodecContext *avctx,
SchroFrameFormat schro_frame_fmt);
#endif /* AVCODEC_LIBSCHROEDINGER_H */
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