FFmpeg: libavformat/bluray.c Source File

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libavformat

bluray.c

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1 /*

2 * BluRay (libbluray) protocol

3 *

5 *

6 * This file is part of FFmpeg.

7 *

8 * FFmpeg is free software; you can redistribute it and/or

9 * modify it under the terms of the GNU Lesser General Public

10 * License as published by the Free Software Foundation; either

11 * version 2.1 of the License, or (at your option) any later version.

12 *

13 * FFmpeg is distributed in the hope that it will be useful,

14 * but WITHOUT ANY WARRANTY; without even the implied warranty of

15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

16 * Lesser General Public License for more details.

17 *

18 * You should have received a copy of the GNU Lesser General Public

19 * License along with FFmpeg; if not, write to the Free Software

20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

21 */

23 #include <libbluray/bluray.h>

25 #include "libavutil/avstring.h"

26 #include "libavformat/url.h"

27 #include "libavutil/opt.h"

29 #define BLURAY_PROTO_PREFIX "bluray:"

30 #define MIN_PLAYLIST_LENGTH 180 /* 3 min */

32 typedef struct {

33 const AVClass *class;

35 BLURAY *bd;

37 int playlist;

38 int angle;

39 int chapter;

40 /*int region;*/

41 } BlurayContext;

43 #define OFFSET(x) offsetof(BlurayContext, x)

44 static const AVOption options[] = {

45 {"playlist", "", OFFSET(playlist), AV_OPT_TYPE_INT, { .i64=-1 }, -1, 99999, AV_OPT_FLAG_DECODING_PARAM },

46 {"angle", "", OFFSET(angle), AV_OPT_TYPE_INT, { .i64=0 }, 0, 0xfe, AV_OPT_FLAG_DECODING_PARAM },

47 {"chapter", "", OFFSET(chapter), AV_OPT_TYPE_INT, { .i64=1 }, 1, 0xfffe, AV_OPT_FLAG_DECODING_PARAM },

48 /*{"region", "bluray player region code (1 = region A, 2 = region B, 4 = region C)", OFFSET(region), AV_OPT_TYPE_INT, { .i64=0 }, 0, 3, AV_OPT_FLAG_DECODING_PARAM },*/

49 {NULL}

50 };

52 static const AVClass bluray_context_class = {

53 .class_name = "bluray",

54 .item_name = av_default_item_name,

55 .option = options,

56 .version = LIBAVUTIL_VERSION_INT,

57 };

60 static int check_disc_info(URLContext *h)

61 {

62 BlurayContext *bd = h->priv_data;

63 const BLURAY_DISC_INFO *disc_info;

65 disc_info = bd_get_disc_info(bd->bd);

66 if (!disc_info) {

67 av_log(h, AV_LOG_ERROR, "bd_get_disc_info() failed\n");

68 return -1;

69 }

71 if (!disc_info->bluray_detected) {

72 av_log(h, AV_LOG_ERROR, "BluRay disc not detected\n");

73 return -1;

74 }

76 /* AACS */

77 if (disc_info->aacs_detected && !disc_info->aacs_handled) {

78 if (!disc_info->libaacs_detected) {

79 av_log(h, AV_LOG_ERROR,

80 "Media stream encrypted with AACS, install and configure libaacs\n");

81 } else {

82 av_log(h, AV_LOG_ERROR, "Your libaacs can't decrypt this media\n");

83 }

84 return -1;

85 }

87 /* BD+ */

88 if (disc_info->bdplus_detected && !disc_info->bdplus_handled) {

89 /*

90 if (!disc_info->libbdplus_detected) {

91 av_log(h, AV_LOG_ERROR,

92 "Media stream encrypted with BD+, install and configure libbdplus");

93 } else {

94 */

95 av_log(h, AV_LOG_ERROR, "Unable to decrypt BD+ encrypted media\n");

96 /*}*/

97 return -1;

98 }

100 return 0;

101 }

102

103 static int bluray_close(URLContext *h)

104 {

105 BlurayContext *bd = h->priv_data;

106 if (bd->bd) {

107 bd_close(bd->bd);

108 }

109

110 return 0;

111 }

112

113 static int bluray_open(URLContext *h, const char *path, int flags)

114 {

115 BlurayContext *bd = h->priv_data;

116 int num_title_idx;

117 const char *diskname = path;

118

119 av_strstart(path, BLURAY_PROTO_PREFIX, &diskname);

120

121 bd->bd = bd_open(diskname, NULL);

122 if (!bd->bd) {

123 av_log(h, AV_LOG_ERROR, "bd_open() failed\n");

124 return AVERROR(EIO);

125 }

126

127 /* check if disc can be played */

128 if (check_disc_info(h) < 0) {

129 return AVERROR(EIO);

130 }

131

132 /* setup player registers */

133 /* region code has no effect without menus

134 if (bd->region > 0 && bd->region < 5) {

135 av_log(h, AV_LOG_INFO, "setting region code to %d (%c)\n", bd->region, 'A' + (bd->region - 1));

136 bd_set_player_setting(bd->bd, BLURAY_PLAYER_SETTING_REGION_CODE, bd->region);

137 }

138 */

139

140 /* load title list */

141 num_title_idx = bd_get_titles(bd->bd, TITLES_RELEVANT, MIN_PLAYLIST_LENGTH);

142 av_log(h, AV_LOG_INFO, "%d usable playlists:\n", num_title_idx);

143 if (num_title_idx < 1) {

144 return AVERROR(EIO);

145 }

146

147 /* if playlist was not given, select longest playlist */

148 if (bd->playlist < 0) {

149 uint64_t duration = 0;

150 int i;

151 for (i = 0; i < num_title_idx; i++) {

152 BLURAY_TITLE_INFO *info = bd_get_title_info(bd->bd, i, 0);

153

154 av_log(h, AV_LOG_INFO, "playlist %05d.mpls (%d:%02d:%02d)\n",

155 info->playlist,

156 ((int)(info->duration / 90000) / 3600),

157 ((int)(info->duration / 90000) % 3600) / 60,

158 ((int)(info->duration / 90000) % 60));

159

160 if (info->duration > duration) {

161 bd->playlist = info->playlist;

162 duration = info->duration;

163 }

164

165 bd_free_title_info(info);

166 }

167 av_log(h, AV_LOG_INFO, "selected %05d.mpls\n", bd->playlist);

168 }

169

170 /* select playlist */

171 if (bd_select_playlist(bd->bd, bd->playlist) <= 0) {

172 av_log(h, AV_LOG_ERROR, "bd_select_playlist(%05d.mpls) failed\n", bd->playlist);

173 return AVERROR(EIO);

174 }

175

176 /* select angle */

177 if (bd->angle >= 0) {

178 bd_select_angle(bd->bd, bd->angle);

179 }

180

181 /* select chapter */

182 if (bd->chapter > 1) {

183 bd_seek_chapter(bd->bd, bd->chapter - 1);

184 }

185

186 return 0;

187 }

188

189 static int bluray_read(URLContext *h, unsigned char *buf, int size)

190 {

191 BlurayContext *bd = h->priv_data;

192 int len;

193

194 if (!bd || !bd->bd) {

195 return AVERROR(EFAULT);

196 }

197

198 len = bd_read(bd->bd, buf, size);

199

200 return len == 0 ? AVERROR_EOF : len;

201 }

202

203 static int64_t bluray_seek(URLContext *h, int64_t pos, int whence)

204 {

205 BlurayContext *bd = h->priv_data;

206

207 if (!bd || !bd->bd) {

208 return AVERROR(EFAULT);

209 }

210

211 switch (whence) {

212 case SEEK_SET:

213 case SEEK_CUR:

214 case SEEK_END:

215 return bd_seek(bd->bd, pos);

216

217 case AVSEEK_SIZE:

218 return bd_get_title_size(bd->bd);

219 }

220

221 av_log(h, AV_LOG_ERROR, "Unsupported whence operation %d\n", whence);

222 return AVERROR(EINVAL);

223 }

224

225

226 const URLProtocol ff_bluray_protocol = {

227 .name = "bluray",

228 .url_close = bluray_close,

229 .url_open = bluray_open,

230 .url_read = bluray_read,

231 .url_seek = bluray_seek,

232 .priv_data_size = sizeof(BlurayContext),

233 .priv_data_class = &bluray_context_class,

234 };

flags

const SwsFlags flags[]

Definition: swscale.c:61

AVERROR

Filter the word "frame" indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions

opt.h

playlist

Definition: hls.c:102

AVERROR_EOF

#define AVERROR_EOF

End of file.

Definition: error.h:57

int64_t

long long int64_t

Definition: coverity.c:34

AVOption

AVOption.