mirror of https://git.ffmpeg.org/ffmpeg.git
134 lines
3.7 KiB
C
134 lines
3.7 KiB
C
/*
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* Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* data structures common to libschroedinger decoder and encoder
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*/
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#ifndef AVCODEC_LIBSCHROEDINGER_H
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#define AVCODEC_LIBSCHROEDINGER_H
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#include <schroedinger/schrobitstream.h>
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#include <schroedinger/schroframe.h>
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#include "avcodec.h"
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typedef struct {
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uint16_t width;
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uint16_t height;
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uint16_t frame_rate_num;
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uint16_t frame_rate_denom;
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} SchroVideoFormatInfo;
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/**
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* contains a single encoded frame returned from Dirac or Schroedinger
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*/
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typedef struct FFSchroEncodedFrame {
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/** encoded frame data */
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uint8_t *p_encbuf;
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/** encoded frame size */
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uint32_t size;
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/** encoded frame number. Will be used as pts */
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uint32_t frame_num;
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/** key frame flag. 1 : is key frame , 0 : in not key frame */
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uint16_t key_frame;
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} FFSchroEncodedFrame;
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/**
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* queue element
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*/
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typedef struct FFSchroQueueElement {
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/** Data to be stored in queue*/
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void *data;
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/** Pointer to next element queue */
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struct FFSchroQueueElement *next;
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} FFSchroQueueElement;
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/**
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* A simple queue implementation used in libschroedinger
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*/
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typedef struct FFSchroQueue {
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/** Pointer to head of queue */
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FFSchroQueueElement *p_head;
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/** Pointer to tail of queue */
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FFSchroQueueElement *p_tail;
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/** Queue size*/
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int size;
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} FFSchroQueue;
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/**
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* Initialise the queue
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*/
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void ff_schro_queue_init(FFSchroQueue *queue);
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/**
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* Add an element to the end of the queue
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*/
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int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data);
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/**
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* Return the first element in the queue
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*/
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void *ff_schro_queue_pop(FFSchroQueue *queue);
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/**
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* Free the queue resources. free_func is a function supplied by the caller to
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* free any resources allocated by the caller. The data field of the queue
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* element is passed to it.
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*/
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void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *));
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static const struct {
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enum PixelFormat ff_pix_fmt;
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SchroChromaFormat schro_pix_fmt;
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SchroFrameFormat schro_frame_fmt;
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} schro_pixel_format_map[] = {
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{ PIX_FMT_YUV420P, SCHRO_CHROMA_420, SCHRO_FRAME_FORMAT_U8_420 },
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{ PIX_FMT_YUV422P, SCHRO_CHROMA_422, SCHRO_FRAME_FORMAT_U8_422 },
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{ PIX_FMT_YUV444P, SCHRO_CHROMA_444, SCHRO_FRAME_FORMAT_U8_444 },
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};
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/**
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* Returns the video format preset matching the input video dimensions and
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* time base.
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*/
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SchroVideoFormatEnum ff_get_schro_video_format_preset (AVCodecContext *avccontext);
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/**
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* Sets the Schroedinger frame format corresponding to the Schro chroma format
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* passed. Returns 0 on success, -1 on failure.
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*/
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int ff_get_schro_frame_format(SchroChromaFormat schro_chroma_fmt,
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SchroFrameFormat *schro_frame_fmt);
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/**
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* Create a Schro frame based on the dimensions and frame format
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* passed. Returns a pointer to a frame on success, NULL on failure.
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*/
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SchroFrame *ff_create_schro_frame(AVCodecContext *avccontext,
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SchroFrameFormat schro_frame_fmt);
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#endif /* AVCODEC_LIBSCHROEDINGER_H */
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