1/*
2Copyright (c) 2012, Broadcom Europe Ltd
3All rights reserved.
4
5Redistribution and use in source and binary forms, with or without
6modification, are permitted provided that the following conditions are met:
7 * Redistributions of source code must retain the above copyright
8 notice, this list of conditions and the following disclaimer.
9 * Redistributions in binary form must reproduce the above copyright
10 notice, this list of conditions and the following disclaimer in the
11 documentation and/or other materials provided with the distribution.
12 * Neither the name of the copyright holder nor the
13 names of its contributors may be used to endorse or promote products
14 derived from this software without specific prior written permission.
15
16THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
20DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26*/
27
28#include "mmal_types.h"
29#include "mmal_format.h"
30#include "util/mmal_util_rational.h"
31
32#define MMAL_ES_FORMAT_MAGIC MMAL_FOURCC('m','a','g','f')
33#define EXTRADATA_SIZE_DEFAULT 32
34#define EXTRADATA_SIZE_MAX (10*1024)
35
36typedef struct MMAL_ES_FORMAT_PRIVATE_T
37{
38 MMAL_ES_FORMAT_T format;
39 MMAL_ES_SPECIFIC_FORMAT_T es;
40
41 uint32_t magic;
42
43 unsigned int extradata_size;
44 uint8_t *extradata;
45
46 uint8_t buffer[EXTRADATA_SIZE_DEFAULT];
47
48} MMAL_ES_FORMAT_PRIVATE_T;
49
50/** Allocate a format structure */
51MMAL_ES_FORMAT_T *mmal_format_alloc(void)
52{
53 MMAL_ES_FORMAT_PRIVATE_T *private;
54
55 private = vcos_calloc(1, sizeof(*private), "mmal format");
56 if(!private) return 0;
57 memset(private, 0, sizeof(*private));
58
59 private->magic = MMAL_ES_FORMAT_MAGIC;
60 private->format.es = (void *)&private->es;
61 private->extradata_size = EXTRADATA_SIZE_DEFAULT;
62
63 return &private->format;
64}
65
66/** Free a format structure */
67void mmal_format_free(MMAL_ES_FORMAT_T *format)
68{
69 MMAL_ES_FORMAT_PRIVATE_T *private = (MMAL_ES_FORMAT_PRIVATE_T *)format;
70 vcos_assert(private->magic == MMAL_ES_FORMAT_MAGIC);
71 if(private->extradata) vcos_free(private->extradata);
72 vcos_free(private);
73}
74
75/** Copy a format structure */
76void mmal_format_copy(MMAL_ES_FORMAT_T *fmt_dst, MMAL_ES_FORMAT_T *fmt_src)
77{
78 void *backup = fmt_dst->es;
79 *fmt_dst->es = *fmt_src->es;
80 *fmt_dst = *fmt_src;
81 fmt_dst->es = backup;
82 fmt_dst->extradata = 0;
83 fmt_dst->extradata_size = 0;
84}
85
86/** Full copy of a format structure (including extradata) */
87MMAL_STATUS_T mmal_format_full_copy(MMAL_ES_FORMAT_T *fmt_dst, MMAL_ES_FORMAT_T *fmt_src)
88{
89 mmal_format_copy(fmt_dst, fmt_src);
90
91 if (fmt_src->extradata_size)
92 {
93 MMAL_STATUS_T status = mmal_format_extradata_alloc(fmt_dst, fmt_src->extradata_size);
94 if (status != MMAL_SUCCESS)
95 return status;
96 fmt_dst->extradata_size = fmt_src->extradata_size;
97 memcpy(fmt_dst->extradata, fmt_src->extradata, fmt_src->extradata_size);
98 }
99 return MMAL_SUCCESS;
100}
101
102/** Compare 2 format structures */
103uint32_t mmal_format_compare(MMAL_ES_FORMAT_T *fmt1, MMAL_ES_FORMAT_T *fmt2)
104{
105 MMAL_VIDEO_FORMAT_T *video1, *video2;
106 uint32_t result = 0;
107
108 if (fmt1->type != fmt2->type)
109 return MMAL_ES_FORMAT_COMPARE_FLAG_TYPE;
110
111 if (fmt1->encoding != fmt2->encoding)
112 result |= MMAL_ES_FORMAT_COMPARE_FLAG_ENCODING;
113 if (fmt1->bitrate != fmt2->bitrate)
114 result |= MMAL_ES_FORMAT_COMPARE_FLAG_BITRATE;
115 if (fmt1->flags != fmt2->flags)
116 result |= MMAL_ES_FORMAT_COMPARE_FLAG_FLAGS;
117 if (fmt1->extradata_size != fmt2->extradata_size ||
118 (fmt1->extradata_size && (!fmt1->extradata || !fmt2->extradata)) ||
119 memcmp(fmt1->extradata, fmt2->extradata, fmt1->extradata_size))
120 result |= MMAL_ES_FORMAT_COMPARE_FLAG_EXTRADATA;
121
122 /* Compare the ES specific information */
123 switch (fmt1->type)
124 {
125 case MMAL_ES_TYPE_VIDEO:
126 video1 = &fmt1->es->video;
127 video2 = &fmt2->es->video;
128 if (video1->width != video2->width || video1->height != video2->height)
129 result |= MMAL_ES_FORMAT_COMPARE_FLAG_VIDEO_RESOLUTION;
130 if (memcmp(&video1->crop, &video2->crop, sizeof(video1->crop)))
131 result |= MMAL_ES_FORMAT_COMPARE_FLAG_VIDEO_CROPPING;
132 if (!mmal_rational_equal(video1->par, video2->par))
133 result |= MMAL_ES_FORMAT_COMPARE_FLAG_VIDEO_ASPECT_RATIO;
134 if (!mmal_rational_equal(video1->frame_rate, video2->frame_rate))
135 result |= MMAL_ES_FORMAT_COMPARE_FLAG_VIDEO_FRAME_RATE;
136 if (video1->color_space != video2->color_space)
137 result |= MMAL_ES_FORMAT_COMPARE_FLAG_VIDEO_COLOR_SPACE;
138 /* coverity[overrun-buffer-arg] We're comparing the rest of the video format structure */
139 if (memcmp(((char*)&video1->color_space) + sizeof(video1->color_space),
140 ((char*)&video2->color_space) + sizeof(video2->color_space),
141 sizeof(*video1) - offsetof(MMAL_VIDEO_FORMAT_T, color_space) - sizeof(video1->color_space)))
142 result |= MMAL_ES_FORMAT_COMPARE_FLAG_ES_OTHER;
143 break;
144 case MMAL_ES_TYPE_AUDIO:
145 if (memcmp(fmt1->es, fmt2->es, sizeof(MMAL_AUDIO_FORMAT_T)))
146 result |= MMAL_ES_FORMAT_COMPARE_FLAG_ES_OTHER;
147 break;
148 case MMAL_ES_TYPE_SUBPICTURE:
149 if (memcmp(fmt1->es, fmt2->es, sizeof(MMAL_SUBPICTURE_FORMAT_T)))
150 result |= MMAL_ES_FORMAT_COMPARE_FLAG_ES_OTHER;
151 break;
152 default:
153 break;
154 }
155
156 return result;
157}
158
159/** */
160MMAL_STATUS_T mmal_format_extradata_alloc(MMAL_ES_FORMAT_T *format, unsigned int size)
161{
162 MMAL_ES_FORMAT_PRIVATE_T *private = (MMAL_ES_FORMAT_PRIVATE_T *)format;
163
164 /* Sanity check the size requested */
165 if(size > EXTRADATA_SIZE_MAX)
166 return MMAL_EINVAL;
167
168 /* Allocate memory if needed */
169 if(private->extradata_size < size)
170 {
171 if(private->extradata) vcos_free(private->extradata);
172 private->extradata = vcos_calloc(1, size, "mmal format extradata");
173 if(!private->extradata)
174 return MMAL_ENOMEM;
175 private->extradata_size = size;
176 }
177
178 /* Set the fields in the actual format structure */
179 if(private->extradata) private->format.extradata = private->extradata;
180 else private->format.extradata = private->buffer;
181
182 return MMAL_SUCCESS;
183}
184