+int ff_amf_read_bool(GetByteContext *bc, int *val)
+{
+ if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_BOOL)
+ return AVERROR_INVALIDDATA;
+ *val = bytestream2_get_byte(bc);
+ return 0;
+}
+
+int ff_amf_read_number(GetByteContext *bc, double *val)
+{
+ uint64_t read;
+ if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_NUMBER)
+ return AVERROR_INVALIDDATA;
+ read = bytestream2_get_be64(bc);
+ *val = av_int2double(read);
+ return 0;
+}
+
+int ff_amf_read_string(GetByteContext *bc, uint8_t *str,
+ int strsize, int *length)
+{
+ int stringlen = 0;
+ int readsize;
+ if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_STRING)
+ return AVERROR_INVALIDDATA;
+ stringlen = bytestream2_get_be16(bc);
+ if (stringlen + 1 > strsize)
+ return AVERROR(EINVAL);
+ readsize = bytestream2_get_buffer(bc, str, stringlen);
+ if (readsize != stringlen) {
+ av_log(NULL, AV_LOG_WARNING,
+ "Unable to read as many bytes as AMF string signaled\n");
+ }
+ str[readsize] = '\0';
+ *length = FFMIN(stringlen, readsize);
+ return 0;
+}
+
+int ff_amf_read_null(GetByteContext *bc)
+{
+ if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_NULL)
+ return AVERROR_INVALIDDATA;
+ return 0;
+}
+