2 * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
4 * This file is part of FFmpeg.
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.
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.
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
23 * data structures common to libschroedinger decoder and encoder
26 #ifndef AVCODEC_LIBSCHROEDINGER_H
27 #define AVCODEC_LIBSCHROEDINGER_H
29 #include <schroedinger/schrobitstream.h>
30 #include <schroedinger/schroframe.h>
34 typedef struct SchroVideoFormatInfo {
37 uint16_t frame_rate_num;
38 uint16_t frame_rate_denom;
39 } SchroVideoFormatInfo;
42 * contains a single encoded frame returned from Dirac or Schroedinger
44 typedef struct FFSchroEncodedFrame {
45 /** encoded frame data */
48 /** encoded frame size */
51 /** encoded frame number. Will be used as pts */
54 /** key frame flag. 1 : is key frame , 0 : in not key frame */
56 } FFSchroEncodedFrame;
61 typedef struct FFSchroQueueElement {
62 /** Data to be stored in queue*/
64 /** Pointer to next element queue */
65 struct FFSchroQueueElement *next;
66 } FFSchroQueueElement;
70 * A simple queue implementation used in libschroedinger
72 typedef struct FFSchroQueue {
73 /** Pointer to head of queue */
74 FFSchroQueueElement *p_head;
75 /** Pointer to tail of queue */
76 FFSchroQueueElement *p_tail;
82 * Initialise the queue
84 void ff_schro_queue_init(FFSchroQueue *queue);
87 * Add an element to the end of the queue
89 int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data);
92 * Return the first element in the queue
94 void *ff_schro_queue_pop(FFSchroQueue *queue);
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.
101 void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *));
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 },
114 * Returns the video format preset matching the input video dimensions and
117 SchroVideoFormatEnum ff_get_schro_video_format_preset (AVCodecContext *avctx);
120 * Sets the Schroedinger frame format corresponding to the Schro chroma format
121 * passed. Returns 0 on success, -1 on failure.
123 int ff_get_schro_frame_format(SchroChromaFormat schro_chroma_fmt,
124 SchroFrameFormat *schro_frame_fmt);
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.
130 SchroFrame *ff_create_schro_frame(AVCodecContext *avctx,
131 SchroFrameFormat schro_frame_fmt);
133 #endif /* AVCODEC_LIBSCHROEDINGER_H */