repositories / deb_ffmpeg.git / blame
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| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com > | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * FFmpeg is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | /** | |
| 22 | * @file | |
| 23 | * data structures common to libschroedinger decoder and encoder | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef AVCODEC_LIBSCHROEDINGER_H | |
| 27 | #define AVCODEC_LIBSCHROEDINGER_H | |
| 28 | ||
| 29 | #include <schroedinger/schrobitstream.h> | |
| 30 | #include <schroedinger/schroframe.h> | |
| 31 | ||
| 32 | #include "avcodec.h" | |
| 33 | ||
| 34 | typedef struct SchroVideoFormatInfo { | |
| 35 | uint16_t width; | |
| 36 | uint16_t height; | |
| 37 | uint16_t frame_rate_num; | |
| 38 | uint16_t frame_rate_denom; | |
| 39 | } SchroVideoFormatInfo; | |
| 40 | ||
| 41 | /** | |
| 42 | * contains a single encoded frame returned from Dirac or Schroedinger | |
| 43 | */ | |
| 44 | typedef struct FFSchroEncodedFrame { | |
| 45 | /** encoded frame data */ | |
| 46 | uint8_t *p_encbuf; | |
| 47 | ||
| 48 | /** encoded frame size */ | |
| 49 | uint32_t size; | |
| 50 | ||
| 51 | /** encoded frame number. Will be used as pts */ | |
| 52 | uint32_t frame_num; | |
| 53 | ||
| 54 | /** key frame flag. 1 : is key frame , 0 : in not key frame */ | |
| 55 | uint16_t key_frame; | |
| 56 | } FFSchroEncodedFrame; | |
| 57 | ||
| 58 | /** | |
| 59 | * queue element | |
| 60 | */ | |
| 61 | typedef struct FFSchroQueueElement { | |
| 62 | /** Data to be stored in queue*/ | |
| 63 | void *data; | |
| 64 | /** Pointer to next element queue */ | |
| 65 | struct FFSchroQueueElement *next; | |
| 66 | } FFSchroQueueElement; | |
| 67 | ||
| 68 | ||
| 69 | /** | |
| 70 | * A simple queue implementation used in libschroedinger | |
| 71 | */ | |
| 72 | typedef struct FFSchroQueue { | |
| 73 | /** Pointer to head of queue */ | |
| 74 | FFSchroQueueElement *p_head; | |
| 75 | /** Pointer to tail of queue */ | |
| 76 | FFSchroQueueElement *p_tail; | |
| 77 | /** Queue size*/ | |
| 78 | int size; | |
| 79 | } FFSchroQueue; | |
| 80 | ||
| 81 | /** | |
| 82 | * Initialise the queue | |
| 83 | */ | |
| 84 | void ff_schro_queue_init(FFSchroQueue *queue); | |
| 85 | ||
| 86 | /** | |
| 87 | * Add an element to the end of the queue | |
| 88 | */ | |
| 89 | int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data); | |
| 90 | ||
| 91 | /** | |
| 92 | * Return the first element in the queue | |
| 93 | */ | |
| 94 | void *ff_schro_queue_pop(FFSchroQueue *queue); | |
| 95 | ||
| 96 | /** | |
| 97 | * Free the queue resources. free_func is a function supplied by the caller to | |
| 98 | * free any resources allocated by the caller. The data field of the queue | |
| 99 | * element is passed to it. | |
| 100 | */ | |
| 101 | void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *)); | |
| 102 | ||
| 103 | static const struct { | |
| 104 | enum AVPixelFormat ff_pix_fmt; | |
| 105 | SchroChromaFormat schro_pix_fmt; | |
| 106 | SchroFrameFormat schro_frame_fmt; | |
| 107 | } schro_pixel_format_map[] = { | |
| 108 | { AV_PIX_FMT_YUV420P, SCHRO_CHROMA_420, SCHRO_FRAME_FORMAT_U8_420 }, | |
| 109 | { AV_PIX_FMT_YUV422P, SCHRO_CHROMA_422, SCHRO_FRAME_FORMAT_U8_422 }, | |
| 110 | { AV_PIX_FMT_YUV444P, SCHRO_CHROMA_444, SCHRO_FRAME_FORMAT_U8_444 }, | |
| 111 | }; | |
| 112 | ||
| 113 | /** | |
| 114 | * Returns the video format preset matching the input video dimensions and | |
| 115 | * time base. | |
| 116 | */ | |
| 117 | SchroVideoFormatEnum ff_get_schro_video_format_preset (AVCodecContext *avctx); | |
| 118 | ||
| 119 | /** | |
| 120 | * Sets the Schroedinger frame format corresponding to the Schro chroma format | |
| 121 | * passed. Returns 0 on success, -1 on failure. | |
| 122 | */ | |
| 123 | int ff_get_schro_frame_format(SchroChromaFormat schro_chroma_fmt, | |
| 124 | SchroFrameFormat *schro_frame_fmt); | |
| 125 | ||
| 126 | /** | |
| 127 | * Create a Schro frame based on the dimensions and frame format | |
| 128 | * passed. Returns a pointer to a frame on success, NULL on failure. | |
| 129 | */ | |
| 130 | SchroFrame *ff_create_schro_frame(AVCodecContext *avctx, | |
| 131 | SchroFrameFormat schro_frame_fmt); | |
| 132 | ||
| 133 | #endif /* AVCODEC_LIBSCHROEDINGER_H */ |