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