summaryrefslogtreecommitdiff
path: root/libavcodec/libschroedinger.c (plain)
blob: 4bb0f12d89f66fe98dc92b83a6d36f09c2458b8d
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* function definitions common to libschroedinger decoder and encoder
24*/
25
26#include "libavutil/attributes.h"
27#include "libavutil/mem.h"
28#include "libschroedinger.h"
29#include "internal.h"
30
31static const SchroVideoFormatInfo ff_schro_video_format_info[] = {
32 { 640, 480, 24000, 1001},
33 { 176, 120, 15000, 1001},
34 { 176, 144, 25, 2 },
35 { 352, 240, 15000, 1001},
36 { 352, 288, 25, 2 },
37 { 704, 480, 15000, 1001},
38 { 704, 576, 25, 2 },
39 { 720, 480, 30000, 1001},
40 { 720, 576, 25, 1 },
41 { 1280, 720, 60000, 1001},
42 { 1280, 720, 50, 1 },
43 { 1920, 1080, 30000, 1001},
44 { 1920, 1080, 25, 1 },
45 { 1920, 1080, 60000, 1001},
46 { 1920, 1080, 50, 1 },
47 { 2048, 1080, 24, 1 },
48 { 4096, 2160, 24, 1 },
49};
50
51static unsigned int get_video_format_idx(AVCodecContext *avctx)
52{
53 unsigned int ret_idx = 0;
54 unsigned int idx;
55 unsigned int num_formats = sizeof(ff_schro_video_format_info) /
56 sizeof(ff_schro_video_format_info[0]);
57
58 for (idx = 1; idx < num_formats; ++idx) {
59 const SchroVideoFormatInfo *vf = &ff_schro_video_format_info[idx];
60 if (avctx->width == vf->width &&
61 avctx->height == vf->height) {
62 ret_idx = idx;
63 if (avctx->time_base.den == vf->frame_rate_num &&
64 avctx->time_base.num == vf->frame_rate_denom)
65 return idx;
66 }
67 }
68 return ret_idx;
69}
70
71av_cold void ff_schro_queue_init(FFSchroQueue *queue)
72{
73 queue->p_head = queue->p_tail = NULL;
74 queue->size = 0;
75}
76
77void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *))
78{
79 while (queue->p_head)
80 free_func(ff_schro_queue_pop(queue));
81}
82
83int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data)
84{
85 FFSchroQueueElement *p_new = av_mallocz(sizeof(FFSchroQueueElement));
86
87 if (!p_new)
88 return -1;
89
90 p_new->data = p_data;
91
92 if (!queue->p_head)
93 queue->p_head = p_new;
94 else
95 queue->p_tail->next = p_new;
96 queue->p_tail = p_new;
97
98 ++queue->size;
99 return 0;
100}
101
102void *ff_schro_queue_pop(FFSchroQueue *queue)
103{
104 FFSchroQueueElement *top = queue->p_head;
105
106 if (top) {
107 void *data = top->data;
108 queue->p_head = queue->p_head->next;
109 --queue->size;
110 av_freep(&top);
111 return data;
112 }
113
114 return NULL;
115}
116
117/**
118* Schroedinger video preset table. Ensure that this tables matches up correctly
119* with the ff_schro_video_format_info table.
120*/
121static const SchroVideoFormatEnum ff_schro_video_formats[]={
122 SCHRO_VIDEO_FORMAT_CUSTOM ,
123 SCHRO_VIDEO_FORMAT_QSIF ,
124 SCHRO_VIDEO_FORMAT_QCIF ,
125 SCHRO_VIDEO_FORMAT_SIF ,
126 SCHRO_VIDEO_FORMAT_CIF ,
127 SCHRO_VIDEO_FORMAT_4SIF ,
128 SCHRO_VIDEO_FORMAT_4CIF ,
129 SCHRO_VIDEO_FORMAT_SD480I_60 ,
130 SCHRO_VIDEO_FORMAT_SD576I_50 ,
131 SCHRO_VIDEO_FORMAT_HD720P_60 ,
132 SCHRO_VIDEO_FORMAT_HD720P_50 ,
133 SCHRO_VIDEO_FORMAT_HD1080I_60 ,
134 SCHRO_VIDEO_FORMAT_HD1080I_50 ,
135 SCHRO_VIDEO_FORMAT_HD1080P_60 ,
136 SCHRO_VIDEO_FORMAT_HD1080P_50 ,
137 SCHRO_VIDEO_FORMAT_DC2K_24 ,
138 SCHRO_VIDEO_FORMAT_DC4K_24 ,
139};
140
141SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avctx)
142{
143 unsigned int num_formats = sizeof(ff_schro_video_formats) /
144 sizeof(ff_schro_video_formats[0]);
145
146 unsigned int idx = get_video_format_idx(avctx);
147
148 return (idx < num_formats) ? ff_schro_video_formats[idx] :
149 SCHRO_VIDEO_FORMAT_CUSTOM;
150}
151
152int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
153 SchroFrameFormat *schro_frame_fmt)
154{
155 unsigned int num_formats = sizeof(schro_pixel_format_map) /
156 sizeof(schro_pixel_format_map[0]);
157
158 int idx;
159
160 for (idx = 0; idx < num_formats; ++idx) {
161 if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
162 *schro_frame_fmt = schro_pixel_format_map[idx].schro_frame_fmt;
163 return 0;
164 }
165 }
166 return -1;
167}
168
169static void free_schro_frame(SchroFrame *frame, void *priv)
170{
171 AVFrame *p_pic = priv;
172 av_frame_free(&p_pic);
173}
174
175SchroFrame *ff_create_schro_frame(AVCodecContext *avctx,
176 SchroFrameFormat schro_frame_fmt)
177{
178 AVFrame *p_pic;
179 SchroFrame *p_frame;
180 int y_width, uv_width;
181 int y_height, uv_height;
182 int i;
183
184 y_width = avctx->width;
185 y_height = avctx->height;
186 uv_width = y_width >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt));
187 uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt));
188
189 p_pic = av_frame_alloc();
190 if (!p_pic)
191 return NULL;
192
193 if (ff_get_buffer(avctx, p_pic, AV_GET_BUFFER_FLAG_REF) < 0) {
194 av_frame_free(&p_pic);
195 return NULL;
196 }
197
198 p_frame = schro_frame_new();
199 p_frame->format = schro_frame_fmt;
200 p_frame->width = y_width;
201 p_frame->height = y_height;
202 schro_frame_set_free_callback(p_frame, free_schro_frame, p_pic);
203
204 for (i = 0; i < 3; ++i) {
205 p_frame->components[i].width = i ? uv_width : y_width;
206 p_frame->components[i].stride = p_pic->linesize[i];
207 p_frame->components[i].height = i ? uv_height : y_height;
208 p_frame->components[i].length =
209 p_frame->components[i].stride * p_frame->components[i].height;
210 p_frame->components[i].data = p_pic->data[i];
211
212 if (i) {
213 p_frame->components[i].v_shift =
214 SCHRO_FRAME_FORMAT_V_SHIFT(p_frame->format);
215 p_frame->components[i].h_shift =
216 SCHRO_FRAME_FORMAT_H_SHIFT(p_frame->format);
217 }
218 }
219
220 return p_frame;
221}
222
generated by cgit at 2024-05-17 06:08:45 (GMT)