fate: add test for async protocol

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/Makefile

@@ -546,7 +546,8 @@ SLIBOBJS-$(HAVE_GNU_WINDRES)             += avformatres.o
 SKIPHEADERS-$(CONFIG_FFRTMPCRYPT_PROTOCOL) += rtmpdh.h
 SKIPHEADERS-$(CONFIG_NETWORK)            += network.h rtsp.h
 
-TESTPROGS = seek                                                        \
+TESTPROGS = async                                                       \
+            seek                                                        \
             srtp                                                        \
             url                                                         \
 

libavformat/async.c

@@ -385,3 +385,174 @@ URLProtocol ff_async_protocol = {
     .priv_data_size      = sizeof(Context),
     .priv_data_class     = &async_context_class,
 };
+
+#ifdef TEST
+
+#define TEST_SEEK_POS    (1536)
+#define TEST_STREAM_SIZE (2048)
+
+typedef struct TestContext {
+    AVClass        *class;
+    size_t          logical_pos;
+    size_t          logical_size;
+} TestContext;
+
+static int async_test_open(URLContext *h, const char *arg, int flags, AVDictionary **options)
+{
+    TestContext *c = h->priv_data;
+    c->logical_pos  = 0;
+    c->logical_size = TEST_STREAM_SIZE;
+    return 0;
+}
+
+static int async_test_close(URLContext *h)
+{
+    return 0;
+}
+
+static int async_test_read(URLContext *h, unsigned char *buf, int size)
+{
+    TestContext *c = h->priv_data;
+    int          i;
+    int          read_len = 0;
+
+    if (c->logical_pos >= c->logical_size)
+        return AVERROR_EOF;
+
+    for (i = 0; i < size; ++i) {
+        buf[i] = c->logical_pos & 0xFF;
+
+        c->logical_pos++;
+        read_len++;
+
+        if (c->logical_pos >= c->logical_size)
+            break;
+    }
+
+    return read_len;
+}
+
+static int64_t async_test_seek(URLContext *h, int64_t pos, int whence)
+{
+    TestContext *c = h->priv_data;
+    int64_t      new_logical_pos;
+
+    if (whence == AVSEEK_SIZE) {
+        return c->logical_size;
+    } if (whence == SEEK_CUR) {
+        new_logical_pos = pos + c->logical_pos;
+    } else if (whence == SEEK_SET){
+        new_logical_pos = pos;
+    } else {
+        return AVERROR(EINVAL);
+    }
+    if (new_logical_pos < 0)
+        return AVERROR(EINVAL);
+
+    c->logical_pos = new_logical_pos;
+    return new_logical_pos;
+}
+
+static const AVClass async_test_context_class = {
+    .class_name = "Async-Test",
+    .item_name  = av_default_item_name,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+URLProtocol ff_async_test_protocol = {
+    .name                = "async-test",
+    .url_open2           = async_test_open,
+    .url_read            = async_test_read,
+    .url_seek            = async_test_seek,
+    .url_close           = async_test_close,
+    .priv_data_size      = sizeof(TestContext),
+    .priv_data_class     = &async_test_context_class,
+};
+
+int main(void)
+{
+    URLContext   *h = NULL;
+    int           i;
+    int           ret;
+    int64_t       size;
+    int64_t       pos;
+    int64_t       read_len;
+    unsigned char buf[4096];
+
+    ffurl_register_protocol(&ff_async_protocol);
+    ffurl_register_protocol(&ff_async_test_protocol);
+
+    ret = ffurl_open(&h, "async:async-test:", AVIO_FLAG_READ, NULL, NULL);
+    printf("open: %d\n", ret);
+
+    size = ffurl_size(h);
+    printf("size: %"PRId64"\n", size);
+
+    pos = ffurl_seek(h, 0, SEEK_CUR);
+    read_len = 0;
+    while (1) {
+        ret = ffurl_read(h, buf, sizeof(buf));
+        if (ret == AVERROR_EOF) {
+            printf("read-error: AVERROR_EOF at %"PRId64"\n", ffurl_seek(h, 0, SEEK_CUR));
+            break;
+        }
+        else if (ret == 0)
+            break;
+        else if (ret < 0) {
+            printf("read-error: %d at %"PRId64"\n", ret, ffurl_seek(h, 0, SEEK_CUR));
+            goto fail;
+        } else {
+            for (i = 0; i < ret; ++i) {
+                if (buf[i] != (pos & 0xFF)) {
+                    printf("read-mismatch: actual %d, expecting %d, at %"PRId64"\n",
+                           (int)buf[i], (int)(pos & 0xFF), pos);
+                    break;
+                }
+                pos++;
+            }
+        }
+
+        read_len += ret;
+    }
+    printf("read: %"PRId64"\n", read_len);
+
+    ret = ffurl_read(h, buf, 1);
+    printf("read: %d\n", ret);
+
+    pos = ffurl_seek(h, TEST_SEEK_POS, SEEK_SET);
+    printf("seek: %"PRId64"\n", pos);
+
+    read_len = 0;
+    while (1) {
+        ret = ffurl_read(h, buf, sizeof(buf));
+        if (ret == AVERROR_EOF)
+            break;
+        else if (ret == 0)
+            break;
+        else if (ret < 0) {
+            printf("read-error: %d at %"PRId64"\n", ret, ffurl_seek(h, 0, SEEK_CUR));
+            goto fail;
+        } else {
+            for (i = 0; i < ret; ++i) {
+                if (buf[i] != (pos & 0xFF)) {
+                    printf("read-mismatch: actual %d, expecting %d, at %"PRId64"\n",
+                           (int)buf[i], (int)(pos & 0xFF), pos);
+                    break;
+                }
+                pos++;
+            }
+        }
+
+        read_len += ret;
+    }
+    printf("read: %"PRId64"\n", read_len);
+
+    ret = ffurl_read(h, buf, 1);
+    printf("read: %d\n", ret);
+
+fail:
+    ffurl_close(h);
+    return 0;
+}
+
+#endif

tests/fate/libavformat.mak

+FATE_LIBAVFORMAT-$(HAVE_PTHREADS) += fate-async
+fate-async: libavformat/async-test$(EXESUF)
+fate-async: CMD = run libavformat/async-test
+
 FATE_LIBAVFORMAT-$(CONFIG_NETWORK) += fate-noproxy
 fate-noproxy: libavformat/noproxy-test$(EXESUF)
 fate-noproxy: CMD = run libavformat/noproxy-test

tests/ref/fate/async

+open: 0
+size: 2048
+read: 2048
+read: 0
+seek: 1536
+read: 512
+read: 0