[FFmpeg-devel] [PATCH 4/5] lavf: add Android content resolver protocol support
Matthieu Bouron
matthieu.bouron at gmail.com
Mon Feb 15 18:52:29 CET 2016
From: Matthieu Bouron <matthieu.bouron at stupeflix.com>
Handles uri starting with content://.
---
configure | 3 +
libavformat/Makefile | 1 +
libavformat/allformats.c | 1 +
libavformat/file.c | 160 +++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 165 insertions(+)
diff --git a/configure b/configure
index d05ae4d..db4ebbc 100755
--- a/configure
+++ b/configure
@@ -2787,6 +2787,8 @@ xv_outdev_extralibs="-lXv -lX11 -lXext"
# protocols
async_protocol_deps="threads"
+android_content_protocol_deps="jni"
+android_content_protocol_select="file_protocol"
bluray_protocol_deps="libbluray"
ffrtmpcrypt_protocol_deps="!librtmp_protocol"
ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
@@ -6226,6 +6228,7 @@ echo "safe bitstream reader ${safe_bitstream_reader-no}"
echo "SDL support ${sdl-no}"
echo "opencl enabled ${opencl-no}"
echo "JNI support ${jni-no}"
+echo "Android content support ${jni-no}"
echo "texi2html enabled ${texi2html-no}"
echo "perl enabled ${perl-no}"
echo "pod2man enabled ${pod2man-no}"
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 35a383d..f17e031 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -514,6 +514,7 @@ OBJS-$(CONFIG_LIBSMBCLIENT_PROTOCOL) += libsmbclient.o
# protocols I/O
OBJS-$(CONFIG_ASYNC_PROTOCOL) += async.o
+OBJS-$(CONFIG_ANDROID_CONTENT_PROTOCOL) += file.o
OBJS-$(CONFIG_APPLEHTTP_PROTOCOL) += hlsproto.o
OBJS-$(CONFIG_BLURAY_PROTOCOL) += bluray.o
OBJS-$(CONFIG_CACHE_PROTOCOL) += cache.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 02bb16a..61ef70b 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -368,6 +368,7 @@ void av_register_all(void)
/* protocols */
REGISTER_PROTOCOL(ASYNC, async);
+ REGISTER_PROTOCOL(ANDROID_CONTENT, android_content);
REGISTER_PROTOCOL(BLURAY, bluray);
REGISTER_PROTOCOL(CACHE, cache);
REGISTER_PROTOCOL(CONCAT, concat);
diff --git a/libavformat/file.c b/libavformat/file.c
index 595ba36..4c3986d 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -37,6 +37,12 @@
#include <stdlib.h>
#include "os_support.h"
#include "url.h"
+#if CONFIG_ANDROID_CONTENT_PROTOCOL
+#include "libavutil/jni.h"
+#include "libavutil/jni_internal.h"
+#include <jni.h>
+#endif
+
/* Some systems may not have S_ISFIFO */
#ifndef S_ISFIFO
@@ -102,6 +108,13 @@ static const AVClass pipe_class = {
.version = LIBAVUTIL_VERSION_INT,
};
+static const AVClass android_content_class = {
+ .class_name = "android_content",
+ .item_name = av_default_item_name,
+ .option = file_options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
static int file_read(URLContext *h, unsigned char *buf, int size)
{
FileContext *c = h->priv_data;
@@ -392,3 +405,150 @@ URLProtocol ff_pipe_protocol = {
};
#endif /* CONFIG_PIPE_PROTOCOL */
+
+#if CONFIG_ANDROID_CONTENT_PROTOCOL
+
+struct JFields {
+
+ jclass uri_class;
+ jclass parse_id;
+
+ jclass context_class;
+ jmethodID get_content_resolver_id;
+
+ jclass content_resolver_class;
+ jmethodID open_file_descriptor_id;
+
+ jclass parcel_file_descriptor_class;
+ jmethodID detach_fd_id;
+
+} JFields;
+
+static const struct FFJniField jfields_mapping[] = {
+
+ { "android/net/Uri", NULL, NULL, FF_JNI_CLASS, offsetof(struct JFields, uri_class), 1 },
+ { "android/net/Uri", "parse", "(Ljava/lang/String;)Landroid/net/Uri;", FF_JNI_STATIC_METHOD, offsetof(struct JFields, parse_id), 1 },
+
+ { "android/content/Context", NULL, NULL, FF_JNI_CLASS, offsetof(struct JFields, context_class), 1 },
+ { "android/content/Context", "getContentResolver", "()Landroid/content/ContentResolver;", FF_JNI_METHOD, offsetof(struct JFields, get_content_resolver_id), 1 },
+
+ { "android/content/ContentResolver", NULL, NULL, FF_JNI_CLASS, offsetof(struct JFields, content_resolver_class), 1 },
+ { "android/content/ContentResolver", "openFileDescriptor", "(Landroid/net/Uri;Ljava/lang/String;)Landroid/os/ParcelFileDescriptor;", FF_JNI_METHOD, offsetof(struct JFields, open_file_descriptor_id), 1 },
+
+ { "android/os/ParcelFileDescriptor", NULL, NULL, FF_JNI_CLASS, offsetof(struct JFields, parcel_file_descriptor_class), 1 },
+ { "android/os/ParcelFileDescriptor", "detachFd", "()I", FF_JNI_METHOD, offsetof(struct JFields, detach_fd_id), 1 },
+
+ { NULL }
+};
+
+static int android_content_open(URLContext *h, const char *filename, int flags)
+{
+ FileContext *c = h->priv_data;
+ int fd, ret = 0;
+ int attached = 0;
+ JNIEnv *env;
+ struct JFields jfields = { 0 };
+
+ jobject application_context = NULL;
+ jobject url = NULL;
+ jobject mode = NULL;
+ jobject uri = NULL;
+ jobject content_resolver = NULL;
+ jobject parcel_file_descriptor = NULL;
+
+ env = avpriv_jni_attach_env(&attached, c);
+ if (!env) {
+ return AVERROR(EINVAL);
+ }
+
+ if (avpriv_jni_init_jfields(env, &jfields, jfields_mapping, 0, c) < 0) {
+ goto done;
+ }
+
+ application_context = av_jni_get_application_context();
+ if (!application_context) {
+ av_log(c, AV_LOG_ERROR, "application context is not set\n");
+ ret = AVERROR_EXTERNAL;
+ goto done;
+ }
+
+ url = avpriv_jni_utf_chars_to_jstring(env, filename, c);
+ if (!url) {
+ ret = AVERROR_EXTERNAL;
+ goto done;
+ }
+
+ mode = avpriv_jni_utf_chars_to_jstring(env, "r", c);
+ if (!mode) {
+ ret = AVERROR_EXTERNAL;
+ goto done;
+ }
+
+ uri = (*env)->CallStaticObjectMethod(env, jfields.uri_class, jfields.parse_id, url);
+ if ((ret = avpriv_jni_exception_check(env, 1, c)) < 0) {
+ goto done;
+ }
+
+ content_resolver = (*env)->CallObjectMethod(env, application_context, jfields.get_content_resolver_id);
+ if ((ret = avpriv_jni_exception_check(env, 1, c)) < 0) {
+ goto done;
+ }
+
+ parcel_file_descriptor = (*env)->CallObjectMethod(env, content_resolver, jfields.open_file_descriptor_id, uri, mode);
+ if ((ret = avpriv_jni_exception_check(env, 1, c)) < 0) {
+ goto done;
+ }
+
+ fd = (*env)->CallIntMethod(env, parcel_file_descriptor, jfields.detach_fd_id);
+ if ((ret = avpriv_jni_exception_check(env, 1, c)) < 0) {
+ goto done;
+ }
+
+#if HAVE_SETMODE
+ setmode(fd, O_BINARY);
+#endif
+ c->fd = fd;
+ h->is_streamed = 0;
+
+done:
+ if (url) {
+ (*env)->DeleteLocalRef(env, url);
+ }
+
+ if (mode) {
+ (*env)->DeleteLocalRef(env, mode);
+ }
+
+ if (uri) {
+ (*env)->DeleteLocalRef(env, uri);
+ }
+
+ if (content_resolver) {
+ (*env)->DeleteLocalRef(env, content_resolver);
+ }
+
+ if (parcel_file_descriptor) {
+ (*env)->DeleteLocalRef(env, parcel_file_descriptor);
+ }
+
+ if (attached) {
+ avpriv_jni_detach_env(c);
+ }
+
+ return ret;
+}
+
+URLProtocol ff_android_content_protocol = {
+ .name = "content",
+ .url_open = android_content_open,
+ .url_read = file_read,
+ .url_write = file_write,
+ .url_seek = file_seek,
+ .url_close = file_close,
+ .url_get_file_handle = file_get_handle,
+ .url_check = NULL,
+ .priv_data_size = sizeof(FileContext),
+ .priv_data_class = &android_content_class,
+};
+
+#endif /* CONFIG_ANDROID_CONTENT_PROTOCOL */
--
2.7.1
More information about the ffmpeg-devel
mailing list