/* * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com > * * 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 */ /** * @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 *avccontext); /** * 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 *avccontext, SchroFrameFormat schro_frame_fmt); #endif /* AVCODEC_LIBSCHROEDINGER_H */